Energy statistics - quantities (nrg

Energy statistics - quantities (nrg_quant)

National Reference Metadata in Single Integrated Metadata Structure (SIMS)

Compiling agency: Statistical Office of the Republic of Slovenia

For any question on data and metadata, please contact: Eurostat user support

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1. Contact

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1.1. Contact organisation

Statistical Office of the Republic of Slovenia

1.2. Contact organisation unit

Environmental Statistics Division, Environment and Energy Statistics Section

1.5. Contact mail address

Litostrojska ulica 54, 1000 Ljubljana, Slovenia

2. Metadata update

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2.1. Metadata last certified

01/10/2022

2.2. Metadata last posted

01/10/2022

2.3. Metadata last update

25/07/2022

3. Statistical presentation

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3.1. Data description

See table under 3.1.1.

3.1.1. Data description – details and links to EU data collections

Name of the national data collection	National body responsible	List of variables included in this data collection	Link to EU data collections (by frequency, energy product set, sector)
Household energy consumption survey	Statistical Office of the Republic of Slovenia	There are almost 400 variables included in this data collection. Key variables are consumed amounts of energy products in households, e.g. firewood, wood pellets etc.	*Households - detailed annual statistics on final energy consumption* For the sectors below and the following energy products: electricity, district heat, extra light heating oil, firewood, wood chips, wood pellets, wood briquettes, wood residues, natural gas, liquefied petroleum gas, coal. Consumption: Households
Monthly solid, liquid, gaseous fuels collection survey	Statistical Office of the Republic of Slovenia	There are almost 800 variables included in this data collection. Key variables are monthly produced, imported, exported, stored and consumed amounts of solid, liquid and gaseous commodities.	*Annual natural gas statistics* For the sectors below and the following energy products: natural gas Production Consumption: Transport Consumption: Other *Annual oil and petroleum products statistics* For the sectors below with some of the following energy products: Crude oil; Additives-oxygenates; LPG; Motor gasoline; Aviation gasoline; Gasoline type jet fuel; Kerosene type jet fuel; Other kerosene; Gas/diesel oil; Fuel oil; White spirit and SPB; Lubricants; Bitumen; Petroleum coke; Other oil products; Transformation sector / Refinery Production Consumption: Transport Consumption: Other Trade (imports / exports) Stocks Infrastructure Calorific values For the sectors below with some of the following energy products: Natural Gas Liquids; Refinery feedstocks; Other hydrocarbons; Refinery gas; Ethane; Naphtha; Paraffin waxes; Transformation sector / Refinery Production Consumption: Transport Consumption: Other Trade (imports / exports) Stocks Infrastructure Calorific values *Monthly solid fuels statistics* For the sectors below with some of the following energy products: Lignite; Coke; Deliveries Production Trade (imports / exports) Stocks *Monthly natural gas statistics* For the sectors below with some of the following energy products: natural gas Production Trade (imports / exports) Stocks *Monthly oil statistics* For the sectors below with some of the following energy products: LPG; Motor gasoline; Kerosene type jet fuel; Gas/diesel oil; Fuel oil; Refinery output or production in case of crude oil Direct use Refineries (backflows and products transferred) Trade (imports / exports) Stocks For the sectors below with some of the following energy products: Crude oil; Natural Gas Liquids; Refinery feedstocks; Additives-oxygenates; Other hydrocarbons; Refinery gas; Ethane; Naphtha; Aviation gasoline; Gasoline type jet fuel; Other kerosene; Petroleum coke; Refinery output or production in case of crude oil Direct use Refineries (backflows and products transferred) Trade (imports / exports) Stocks *Short-term monthly oil statistics* For the sectors below with some of the following energy products: LPG; Gasoline; Total kerosene; Gas/diesel oil; Fuel oil; Refinery (intake and output) Demand Production Trade (imports / exports) Stocks For the sectors below with some of the following energy products: Crude oil; Natural Gas Liquids; Naphtha; Other products; Refinery (intake and output) Demand Production Trade (imports / exports) Stocks
Annual solid, liquid, gaseous fuels collection survey	Statistical Office of the Republic of Slovenia	There are almost 400 variables included in this data collection. Key variables are annually produced, imported, exported, stored and consumed amounts of solid, liquid and gaseous commodities.	*Annual solid fuels statistics* For the sectors below with some of the following energy products: Other bituminous coal; Sub-bituminous coal; Lignite; Coke oven Coke; Transformation sector Production Consumption: Transport Consumption: Residential Consumption: Other Trade (imports / exports) Stocks Infrastructure For the sectors below with some of the following energy products: Anthracite; Coking Coal; Patent fuel; Gas Coke; Coal Tar; BKB; Gas works Gas; Coke oven Gas; Blast furnace gas; Other recovered gases; Peat; Peat products; Oil shale and oil sands; Transformation sector Production Consumption: Transport Consumption: Residential Trade (imports / exports) Stocks Infrastructure Calorific values *Annual natural gas statistics* For the sectors below and the following energy products: natural gas Consumption: Residential Trade (imports / exports) Stocks *Annual oil and petroleum products statistics* For the sectors below with some of the following energy products: Crude oil; Additives-oxygenates; LPG; Motor gasoline; Aviation gasoline; Gasoline type jet fuel; Kerosene type jet fuel; Other kerosene; Gas/diesel oil; Fuel oil; White spirit and SPB; Lubricants; Bitumen; Petroleum coke; Other oil products; Consumption: Residential For the sectors below with some of the following energy products: Natural Gas Liquids; Refinery feedstocks; Other hydrocarbons; Refinery gas; Ethane; Naphtha; Paraffin waxes; Consumption: Residential
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Statistical Office of the Republic of Slovenia	Key variables are annually consumed amounts of energy (energy and non-energy use), calorific values, stocks of energy products and purposes of energy use in the industrial sector.	*Annual solid fuels statistics* For the sectors below with some of the following energy products: Other bituminous coal; Sub-bituminous coal; Lignite; Coke oven Coke; Consumption: Industry Calorific values For the sectors below with some of the following energy products: Anthracite; Coking Coal; Patent fuel; Gas Coke; Coal Tar; BKB; Gas works Gas; Coke oven Gas; Blast furnace gas; Other recovered gases; Peat; Peat products; Oil shale and oil sands; Consumption: Industry Consumption: Other *Annual electricity and heat statistics* For the sectors below with some of the following energy products: Nuclear; Hydro; Solar; Wind; Combustible fuels; Geothermalheat; Combustible fuels heat; Consumption: Industry *Annual natural gas statistics* For the sectors below and the following energy products: natural gas Consumption: Industry *Annual oil and petroleum products statistics* For the sectors below with some of the following energy products: Crude oil; Additives-oxygenates; LPG; Motor gasoline; Aviation gasoline; Gasoline type jet fuel; Kerosene type jet fuel; Other kerosene; Gas/diesel oil; Fuel oil; White spirit and SPB; Lubricants; Bitumen; Petroleum coke; Other oil products; Consumption: Industry For the sectors below with some of the following energy products: Natural Gas Liquids; Refinery feedstocks; Other hydrocarbons; Refinery gas; Ethane; Naphtha; Paraffin waxes; Consumption: Industry *Annual renewables and wastes statistics* For the sectors below with some of the following energy products: Hydro power; Wind power; Solar photovoltaic; Solid biofuels; Liquid biofuels; Biogases; Industrial waste; Consumption: Industry
Annual Electricity and Heat Survey	Statistical Office of the Republic of Slovenia	Key variables are production (by energy source), consumption and sale of electricity and heat, fuel consumption in power stations, power of generators and types, number and power of engines that drive generators.	*Annual solid fuels statistics* For the sectors below with some of the following energy products: Other bituminous coal; Sub-bituminous coal; Lignite; Coke oven Coke; Consumption: Energy sector For the sectors below with some of the following energy products: Anthracite; Coking Coal; Patent fuel; Gas Coke; Coal Tar; BKB; Gas works Gas; Coke oven Gas; Blast furnace gas; Other recovered gases; Peat; Peat products; Oil shale and oil sands; Consumption: Energy sector *Annual electricity and heat statistics* For the sectors below with some of the following energy products: Nuclear; Hydro; Solar; Wind; Combustible fuels; Geothermalheat; Combustible fuels heat; Production Transformation sector Consumption: Energy sector Consumption: Transport Consumption: Residential Consumption: Other Trade (imports / exports) Infrastructure Calorific values *Annual natural gas statistics* For the sectors below and the following energy products: natural gas Transformation sector Consumption: Energy sector Infrastructure Calorific values *Annual oil and petroleum products statistics* For the sectors below with some of the following energy products: Crude oil; Additives-oxygenates; LPG; Motor gasoline; Aviation gasoline; Gasoline type jet fuel; Kerosene type jet fuel; Other kerosene; Gas/diesel oil; Fuel oil; White spirit and SPB; Lubricants; Bitumen; Petroleum coke; Other oil products; Consumption: Energy sector For the sectors below with some of the following energy products: Natural Gas Liquids; Refinery feedstocks; Other hydrocarbons; Refinery gas; Ethane; Naphtha; Paraffin waxes; Consumption: Energy sector *Annual renewables and wastes statistics* For the sectors below with some of the following energy products: Hydro power; Wind power; Solar photovoltaic; Solid biofuels; Liquid biofuels; Biogases; Industrial waste; Production Transformation sector Consumption: Energy sector Consumption: Transport Consumption: Residential Consumption: Other Trade (imports / exports) Stocks Infrastructure Calorific values *Annual nuclear energy statistics* For the sectors below: Production of nuclear heat Production and production capacity of fresh fuel elements Production and production capacity of Uranium and Plutonium in reprocessing plants Enrichment capacity Production and production capacity of MOX Annual average burnup of definitively discharged irradiated elements
Monthly Electricity and heat Survey	Statistical Office of the Republic of Slovenia	Key variables are production (by energy source), consumption and sale of electricity, heat and use of fuels in power stations.	*Monthly electricity statistics* For the sectors below with some of the following energy products: Hydro power; Wind power; Solar power; Conventional thermal; Nuclear; Production Consumption in public power thermal stations Nuclear heat production Trade (imports / exports) Fuel stocks in public power thermal stations *Monthly natural gas statistics* For the sectors below with some of the following energy products: natural gas Deliveries to power generation

3.2. Classification system

See table under 3.2.1.

3.2.1. Classification system – industry sector, products and geographical

Name of the national data collection	Industry sector	Products	Geographical
Household energy consumption survey	Not applicable	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)
Monthly solid, liquid, gaseous fuels collection survey	NACE rev. 2 (EU classification of economic activities)	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)
Annual solid, liquid, gaseous fuels collection survey	NACE rev. 2 (EU classification of economic activities)	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	NACE rev. 2 (EU classification of economic activities)	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)
Annual Electricity and Heat Survey	NACE rev. 2 (EU classification of economic activities)	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)
Monthly Electricity and heat Survey	NACE rev. 2 (EU classification of economic activities)	Classification in Regulation (EC) 1099/2008 on energy statistics	NUTS (Nomenclature of territorial units for statistics)

3.3. Coverage - sector

Energy statistics data covers all major sectors of the economy (including households) that are involved in the production, trade, energy transformation or energy consumption.

3.4. Statistical concepts and definitions

Definitions of Regulation (EC) No 1099/2008 on energy statistics apply.

3.5. Statistical unit

See table under 3.5.1.

3.5.1. Statistical unit – Data collections

Name of the national data collection	Reporting unit
Household energy consumption survey	Dwelling
Monthly solid, liquid, gaseous fuels collection survey	the Enterprise
Annual solid, liquid, gaseous fuels collection survey	the Enterprise
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	the Enterprise
Annual Electricity and Heat Survey	the Enterprise
Monthly Electricity and heat Survey	the Enterprise

3.6. Statistical population

Name of the national data collection	Statistical population
Household energy consumption survey	Households (in private dwellings)
Monthly solid, liquid, gaseous fuels collection survey	Enterprises
Annual solid, liquid, gaseous fuels collection survey	Enterprises
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Enterprises
Annual Electricity and Heat Survey	Enterprises
Monthly Electricity and heat Survey	Enterprises

3.7. Reference area

The national territory.

3.8. Coverage - Time

See table under 3.8.1.

3.8.1. Coverage time – Data collections

Name of the national data collection	Coverage time
Household energy consumption survey	2000-2020
Monthly solid, liquid, gaseous fuels collection survey	2001-2021
Annual solid, liquid, gaseous fuels collection survey	2000-2020
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	1990-2020
Annual Electricity and Heat Survey	1990-2020
Monthly Electricity and heat Survey	2004-2021

3.9. Base period

Not applicable.

4. Unit of measure

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See table under 4.1.

4.1. Unit of measure – data collections

Name of the national data collection	Unit of measurement
Household energy consumption survey	ktonnes MJ, GJ, TJ m3 MWh, GWh, TWh
Monthly solid, liquid, gaseous fuels collection survey	ktonnes m³
Annual solid, liquid, gaseous fuels collection survey	ktonnes m³
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	ktonnes MJ, GJ, TJ m³ MWh, GWh, TWh
Annual Electricity and Heat Survey	ktonnes MJ, GJ, TJ m³ MWh, GWh, TWh kW, MW, GW
Monthly Electricity and heat Survey	ktonnes MJ, GJ, TJ m³ MWh, GWh, TWh

5. Reference Period

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See table under 5.1.

5.1. Reference period – data collections

Name of the national data collection	Reference period
Household energy consumption survey	1 year
Monthly solid, liquid, gaseous fuels collection survey	1 month
Annual solid, liquid, gaseous fuels collection survey	1 year
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	1 year
Annual Electricity and Heat Survey	1 year
Monthly Electricity and heat Survey	1 month

6. Institutional Mandate

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6.1. Institutional Mandate - legal acts and other agreements

See table under 6.1.1.

6.1.1. National legal acts and other agreements

Name of the national data collection	National legal framework	Reference of national legal text
Household energy consumption survey	Voluntary data collection	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)
Monthly solid, liquid, gaseous fuels collection survey	Mandatory (included in a national legal act)	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)
Annual solid, liquid, gaseous fuels collection survey	Mandatory (included in a national legal act)	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Mandatory (included in a national legal act)	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)
Annual Electricity and Heat Survey	Mandatory (included in a national legal act)	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)
Monthly Electricity and heat Survey	Mandatory (included in a national legal act)	National Statistics Act (OJ RS, No. 45/95 and No. 9/01), Medium-term programme of statistical surveys (currently applicable for the period 2018-2022, OJ RS, No. 63/17) and Annual programme of statistical surveys (for the year 2020, OJ RS, No. 68/19, 106/20 and 161/20)

6.2. Institutional Mandate - data sharing

See table under 6.2.1.

6.2.1. Institutional mandate – data sharing – national data collections

Name of the national data collection	Situation, if more than 1 body is involved in this data collection	Degree of integration of this data collection among different National bodies
Household energy consumption survey	Not applicable.	Not applicable.
Monthly solid, liquid, gaseous fuels collection survey	Not applicable.	Not applicable.
Annual solid, liquid, gaseous fuels collection survey	Coordination defined in Memorandum of Understanding or gentleman's agreement	Alignment even if not the same questionnaires/classifications are used
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Not applicable.	Not applicable.
Annual Electricity and Heat Survey	Coordination defined in Memorandum of Understanding or gentleman's agreement	Alignment even if not the same questionnaires/classifications are used
Monthly Electricity and heat Survey	Coordination defined in Memorandum of Understanding or gentleman's agreement	Alignment even if not the same questionnaires/classifications are used

7. Confidentiality

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Annexes:
Annex_Accuracy

7.1. Confidentiality - policy

Regulation (EC) No 223/2009 on European statistics (recitals 23-27, 31-32 and Articles 20-26) applies.

7.2. Confidentiality - data treatment

Confidential data are not shown. The most common approach is to present only aggregation of the confidential data point with the non-confidential data that is the nearest suitable data point.

7.2.1. Confidentiality – EU data collections

EU DATA COLLECTION	CONFIDENTIAL DATA POINTS
Crude oil imports register – Short term monthly statistics	No
Oil and petroleum products – Short term monthly statistics	No
Natural gas - short term monthly statistics	No
Solid fuels - monthly statistics	No
Electricity - monthly statistics	No
Oil and petroleum products - monthly statistics	No
Natural gas - monthly statistics	No
Nuclear - annual statistics	No
Electricity and heat - annual statistics	No
Natural gas - annual statistics	No
Oil and petroleum products - annual statistics	No
Renewables and wastes - annual statistics	No
Solid fossil fuels and manufactured gases - annual statistics	No
Short Assessment of Renewable Energy Sources (SHARES)	No
Households - detailed annual statistics on final energy consumption	No

8. Release policy

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8.1. Release calendar

Each release of statistical data is announced in the Release Calendar. The calendar also includes releases of authorised producers of national statistics, i.e. the National Institute of Public Health and the Bank of Slovenia. The dates of first releases are announced a year in advance, usually in November of the current year for the coming year. During the year, SURS prepares and publishes – depending on current events – special and experimental releases, which are also announced in the Release Calendar. Users can subscribe to receiving a weekly calendar on their e-mails every Monday at 9:00.

In planning the release dates, SURS makes sure that data published for the first time are as close as possible to the reference date of the statistical survey. In determining the release date, SURS always takes into account deadlines stipulated in European regulations. The release time is always 10:30 on a workday. The system of publishing releases of latest data and SiStat Database tables is automated, meaning that data are published automatically at 10:30 on SURS’s website.

8.2. Release calendar access

The release calendar is available on the SURS website.

8.3. Release policy - user access

SURS provides access to official statistical data to all users. The latest statistical data are published every workday at 10:30 on the date announced in advance in the release calendar. They are published in both Slovenian and English. Statistical data are published in aggregate form only. Access to microdata is only possible for research purposes. The data on the website are available free of charge.

9. Frequency of dissemination

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See table under 9.1.

9.1. Frequency of dissemination – national data collections

Name of the national data collection	Frequency of dissemination
Household energy consumption survey	Yearly
Monthly solid, liquid, gaseous fuels collection survey	Monthly
Annual solid, liquid, gaseous fuels collection survey	Yearly
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Yearly
Annual Electricity and Heat Survey	Yearly
Monthly Electricity and heat Survey	Monthly

10. Accessibility and clarity

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10.1. Dissemination format - News release

The Statistical Office of the Republic of Slovenia (SURS) publishes First releases on energy statistics monthly (at the end of the month) and annually (provisional data in May and final data in October).

Example of annual release: https://www.stat.si/StatWeb/en/News/Index/10345

Example of monthly release: https://www.stat.si/StatWeb/en/news/Index/9884

10.2. Dissemination format - Publications

By disseminating statistical data via different channels, SURS wants to reach the users who have different needs, wishes and knowledge. In the past, SURS was publishing only printed publications, but modern times require focus on presenting and publishing statistical data in digital format. SURS presents and publishes statistical data in various forms, via various products and channels, and follows modern technological trends and standards.

10.3. Dissemination format - online database

The Statistical Office of the Republic of Slovenia (SURS) publishes data on energy statistics in online SiStat database:

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy

10.3.1. Data tables - consultations

Not requested for this metadata collection.

10.4. Dissemination format - microdata access

The Statistical Office of the Republic of Slovenia (SURS) enables researchers to access data for the purpose of research, i.e. to all data collected with statistical surveys planned in the current annual programme of statistical surveys (LPSR). SURS also enables researchers to access data that researchers transmit to SURS with the purpose of linking them in a secure environment.

The use of the data is according to the data sensitivity in the following ways: access in SURS's secure room, remote access and using statistically protected microdata via Big file exchange system.

https://www.stat.si/StatWeb/en/StaticPages/Index/For-Researchers

10.5. Dissemination format - other

See 10.5.1.

10.5.1. Metadata - consultations

Not requested for this metadata collection.

10.6. Documentation on methodology

Household energy consumption survey

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energetika/?household-energy-consumption#335

Monthly solid, liquid, gaseous fuels collection survey

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStatData/pxweb/sl/Data/-/1818001S.px

Annual solid, liquid, gaseous fuels collection survey

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStatData/pxweb/sl/Data/-/1818002S.px

Annual statistical survey on the consumption of energy, fuels and selected petroleum products

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy/?consumption-of-energy-products-and-stocks-in-industry-#513

Annual Electricity and Heat Survey

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy/?electricity#243

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy/?heat#275

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy/?renewables-and-wastes#485

Monthly Electricity and heat Survey

Links to quality and methodology documentation (reference material on methods and questionnaires used)

http://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

Link to national metadata

https://pxweb.stat.si/SiStat/en/Podrocja/Index/186/energy/?electricity#243

10.6.1. Metadata completeness - rate

Not requested for this metadata collection.

10.7. Quality management - documentation

The Statistical Office of the Republic of Slovenia operates on the basis of the National Statistics Act and Regulation (EC) No. 223/2009 on European statistics; in performing its tasks it follows the general principles of quality management, the European Statistics Code of Practice and the Fundamental Principles of Official Statistics. In line with the stated, SURS declares that it takes into account the following principles: professional independence, process orientation, quality of products and services, planning of improvements, stimulating working environment for employees, data providers-friendly official statistics, user-oriented official statistics.

11. Quality management

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11.1. Quality assurance

SURS operates according to the instructions prescribed in the manual http://www.stat.si/dokument/9532/smernice_za_zagotavljanje_kakovosti.pdf (only in Slovene language).

11.2. Quality management - assessment

See table under 11.2.1.

11.2.1. Quality assessment – data collections

Name of the national data collection	Most important quality problem of this data collection	Measures taken in the last 5 years to improve quality of the data collection
Household energy consumption survey	The most important quality problem of this data collection at this point is large non-response rate. We are currently working on this as we are planning some changes in surveying methods.	In 2019, we changed the data collection mode to Computer Assisted Personal Interviewing combined with Computer Assisted Web Interviewing, which resulted in higher response rate.
Monthly solid, liquid, gaseous fuels collection survey	The most important quality problems of this data collection at this point are rapid changes on domestic energy market e.g. line between traders and consumers of energy commodities is fading rapidly. We are currently working on this as we are planning some changes in surveying methods.	Survey is renewed according to the needs of reporting obligations or demands from current or newly involved reporting units.
Annual solid, liquid, gaseous fuels collection survey	The most important quality problems of this data collection at this point are rapid changes on domestic energy market e.g. line between traders and consumers of energy commodities is fading rapidly. We are currently working on this as we are planning some changes in surveying methods.	Survey is renewed according to the needs of reporting obligations or demands from current or newly involved reporting units.
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	The most important quality problem is non-response rate.	Survey is renewed according to the needs of reporting obligations or demands from current or newly involved reporting units. Major changes in the last years were: 2018: Started collecting more disaggregated data – purposes of energy use. 2018: Expansion of the sample. Additionally included units according to NACE Rev. 2 from A03 and E. 2018: First year of implementing data from other statistical surveys for units from A01, A02 and D35 according to NACE Rev. 2. 2019: Transition from a paper questionnaire to an online questionnaire. Each year controls and automatic corrections are updated, adjusted and added. An online questionnaire is also updated annually with novelties that make it easier for reporting units to complete.
Annual Electricity and Heat Survey	The most important quality problem of this data collection is covering of the relevant reporting units.	Survey is renewed according to the needs of reporting obligations or demands from current or newly involved reporting units.
Monthly Electricity and heat Survey	The most important quality problem of this data collection is covering of the relevant reporting units.	Survey is renewed according to the needs of reporting obligations or demands from current or newly involved reporting units.

12. Relevance

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12.1. Relevance - User Needs

Key data users are:

public sector: ministries, agencies, local energy agencies;
business entities: energy companies;
science, research and education: Jožef Stefan Institute, Forestry Institute of Slovenia, universities, researchers;
general public;
media: STA, Delo, Dnevnik, Finance, various online media;
foreign users: Eurostat, OECD, IEA;
internal users: Environment and Energy Statistics Section.

User needs are also communicated through Energy Statistics Advisory Committee. The priority of this committee is that any changes in the energy sector adequately reflected in the changes and amendments of statistical surveys.

12.2. Relevance - User Satisfaction

User satisfaction surveys have been implemented since 2003. The latest survey report (for 2021) is posted on the SURS website: https://www.stat.si/StatWeb/en/News/Index/10342

12.3. Completeness

See table under 12.3.1.

12.3.1. Data completeness - rate

See table under 12.3.1.1.

12.3.1.1. Data completeness - rate – EU data collections

EU DATA COLLECTION	DATA COMPLETENESS - RATE	NUMBER OF MISSING DATA POINTS
Crude oil imports register – Short term monthly statistics	100%
Oil and petroleum products – Short term monthly statistics	100%
Natural gas - short term monthly statistics	100%
Solid fuels - monthly statistics	100%
Electricity - monthly statistics	100%
Oil and petroleum products - monthly statistics	100%
Natural gas - monthly statistics	100%
Nuclear - annual statistics	100%
Electricity and heat - annual statistics	100%
Natural gas - annual statistics	100%
Oil and petroleum products - annual statistics	100%
Renewables and wastes - annual statistics	100%
Solid fossil fuels and manufactured gases - annual statistics	100%
SHort Assessment of Renewable Energy Sources (SHARES)	100%
Households - detailed annual statistics on final energy consumption	100%

13. Accuracy

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Annexes:
Accuracy indicators

13.1. Accuracy - overall

See table under 13.1.1.

13.1.1. Accuracy – most common errors for specific data collections

Name of the national data collection	Most common errors for this collection
Household energy consumption survey	Measurement errors Sampling errors
Monthly solid, liquid, gaseous fuels collection survey	Measurement errors
Annual solid, liquid, gaseous fuels collection survey	Measurement errors
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Measurement errors
Annual Electricity and Heat Survey	Measurement errors
Monthly Electricity and heat Survey	Measurement errors

13.2. Sampling error

See 13.2.1.

13.2.1. Sampling error - indicators

Not requested for this metadata collection.

13.3. Non-sampling error

See 13.3.1. and 13.3.2. and 13.3.3. and 13.3.4. and 13.3.5.

13.3.1. Coverage error

See 13.3.1.1. and 13.3.1.2.

13.3.1.1. Over-coverage - rate

See annex.

13.3.1.2. Common units - proportion

See annex.

13.3.2. Measurement error

See annex.

13.3.3. Non response error

See 13.3.3.1. and 13.3.3.2.

13.3.3.1. Unit non-response - rate

See annex.

13.3.3.2. Item non-response - rate

See annex.

13.3.4. Processing error

Not applicable.

13.3.5. Model assumption error

Not applicable.

14. Timeliness and punctuality

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14.1. Timeliness

See table under 14.1.3.

14.1.1. Time lag - first result

Not requested for this metadata collection.

14.1.2. Time lag - final result

Not requested for this metadata collection.

14.1.3. Timeliness – deadlines for data transmission for each national data collection

Name of the national data collection	Deadline for data transmission
Household energy consumption survey	Household survey is open 2 months for data collection for the previous year.
Monthly solid, liquid, gaseous fuels collection survey	10 days after the end of the reference period.
Annual solid, liquid, gaseous fuels collection survey	2 months after the end of the reference period
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	3 months after the end of the reference period
Annual Electricity and Heat Survey	2 months after the end of the reference period
Monthly Electricity and heat Survey	10 days after the end of the reference period

14.2. Punctuality

Actual date of delivery is the same as announced date of delivery. The difference in days is equal 0.

14.2.1. Punctuality - delivery and publication

Not requested for this metadata collection.

15. Coherence and comparability

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15.1. Comparability - geographical

The data are comparable to those from other Member States of the European Statistical System.

15.1.1. Asymmetry for mirror flow statistics - coefficient

Not requested for this metadata collection.

15.2. Comparability - over time

See 15.2.1.

15.2.1. Length of comparable time series

Annual surveys were first introduced with data for 2000, but some basic, comparable data are available from 1990 onwards. The full time series exists for the 2000–2020 period.

Comparable time series for the monthly surveys are available for the 2004–2021 period. The length of the comparable time series until the end of 2021 is 18 × 12 = 216 months.

15.3. Coherence - cross domain

See 15.3.1. and 15.3.2.

15.3.1. Coherence - sub annual and annual statistics

Annual and monthly data on Electricity and Heat are not 100% coherent. Annual data consist of additional data from an administrative source that is not available on a monthly basis.

Annual and monthly data on liquid and gaseous fuels are 100% coherent.

Annual and monthly data on solid fuels are not 100% coherent, due to regular annual solid fuels stocks revision.

15.3.2. Coherence - National Accounts

Not applicable.

15.4. Coherence - internal

Data are internally consistent.

16. Cost and Burden

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Costs for Household energy consumption survey in 2019 were over 9,800 EUR for printing and postage cost for the notification letters and almost 28,500 EUR for the interviewers. There were also costs for personnel working on the survey that be cannot be assessed as one employee works on many surveys. The latter applies also to other surveys on energy statistics.

Average time spent on completing a household energy consumption questionnaire was 13.8 minutes (in 2019).

Average time spent on completing annual questionnaire on Annual solid, liquid, gaseous fuels was 47 minutes (in 2020).

Average time spent on completing annual questionnaire on Monthly solid, liquid, gaseous fuels was 51 minutes (in 2020).

Average time spent on completing annual questionnaire on the consumption of energy, fuels and selected petroleum products was 68 minutes (in 2020).

Average time spent on completing annual questionnaire on the electricity and heat was 58 minutes (in 2020).

Average time spent on completing monthly questionnaire on the electricity and heat was 31 minutes (in 2020).

17. Data revision

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17.1. Data revision - policy

A revision policy covers all national data collections. Data revision is a statistical process that changes the values of published data. The purpose of data revision is to provide the users statistical data of the highest quality. SURS determines data revision in terms of planning, time of implementation and purpose of revision. Link to the revision policy: https://www.stat.si/statweb/File/DocSysFile/5299

The frequency of planned data revision is balanced with the need to provide as quality data as possible and their simple use. Data are revised when newer data or data of higher quality can significantly contribute to the quality of data-based decision-making and when due to publication deadlines determined by the European or national legislation or due to unforeseen obstacles in data processing and publication, less accurate data are published on the basis of incomplete coverage.

Users are informed about data revisions. Annually, usually in January, SURS prepares the list of statistical surveys subject to planned revision of statistical data (Slovene only). Users are also informed when the data are released.

17.2. Data revision - practice

Revisions are not planned in advance. If there is a need for revision, common revision policy of the Statistical Office is taken into account.

17.2.1. Data revision - average size

Not requested for this metadata collection.

18. Statistical processing

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18.1. Source data

See table under 18.1.1.

18.1.1. Source data – data collections

Name of the national data collection	Main data collection method	Target population	Population frame	Sample size
Household energy consumption survey	Household sample survey	2 028 084 (2018 census)	1 489 171 (for 2019)	7 000 (for 2019)
Monthly solid, liquid, gaseous fuels collection survey	Census	33	Not available.	Not available.
Annual solid, liquid, gaseous fuels collection survey	Census	32	Not available.	Not available.
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Business survey with threshold: 20 employees and more	44 000	28 400 (for 2020)	1 769 (for 2020)
Annual Electricity and Heat Survey	Census	200	Not available.	Not available.
Monthly Electricity and heat Survey	Census	80	Not available.	Not available.

18.2. Frequency of data collection

See table under 18.2.1.

18.2.1. Frequency of data collection – national data collections

Name of the national data collection	Frequency of transmission
Household energy consumption survey	Household survey is performed every 4 years.
Monthly solid, liquid, gaseous fuels collection survey	Once per month
Annual solid, liquid, gaseous fuels collection survey	Once per year
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Once per year
Annual Electricity and Heat Survey	Once per year
Monthly Electricity and heat Survey	Once per month

18.3. Data collection

Name of the national data collection	Main data source	Description
Household energy consumption survey	Household survey	Questionnaire with integrated logical controls carried out by Computer Assisted Personal Interviewing (CAPI) combined with Computer Assisted Web Interviewing (CAWI). 2019 questionnaire (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/10555/APEGG_2019.pdf
Monthly solid, liquid, gaseous fuels collection survey	Monthly solid, liquid, gaseous fuels collection survey	Questionnaire in Excel form with integrated logical controls carried out by email. 2021 questionnaires (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/11225/E6-NAF-M_2021.pdf https://www.stat.si/StatWeb/File/DocSysFile/11226/E7-NP-M_2021.pdf https://www.stat.si/StatWeb/File/DocSysFile/11227/E8-NPT-M_2021.pdf https://www.stat.si/StatWeb/File/DocSysFile/11230/E10-TGT-M_2021.pdf https://www.stat.si/StatWeb/File/DocSysFile/11231/E11-TG-M_2021.pdf
Annual solid, liquid, gaseous fuels collection survey	Annual solid, liquid, gaseous fuels collection survey	Questionnaire with integrated logical controls carried out by web survey. 2020 questionnaire (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/11228/E8-NPT-L_2020.pdf https://www.stat.si/StatWeb/File/DocSysFile/11229/E9-PL-L_2020.pdf https://www.stat.si/StatWeb/File/DocSysFile/11232/E11-TG-L_2020.pdf
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Questionnaire with integrated logical controls carried out by web survey. 2020 questionnaire (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/11207/E-PE-L_2020.pdf
Annual Electricity and Heat Survey	Annual Electricity and Heat Survey	Questionnaire in Excel form with integrated logical controls carried out by email. 2020 questionnaires (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/11220/E1-EE-L_2020.pdf https://www.stat.si/StatWeb/File/DocSysFile/11221/E3-TOP-L_2020.pdf https://www.stat.si/StatWeb/File/DocSysFile/11223/E4-EEP-L_2020.pdf https://www.stat.si/StatWeb/File/DocSysFile/11224/E5-EED-L_2020.pdf
Monthly Electricity and heat Survey	Monthly Electricity and heat Survey	Questionnaire in Excel form with integrated logical controls carried out by email. 2021 questionnaires (only in Slovene language): https://www.stat.si/StatWeb/File/DocSysFile/11219/E1-EE-M_2021.pdf https://www.stat.si/StatWeb/File/DocSysFile/11222/E4-EEP-M_2021.pdf

18.4. Data validation

See table under 18.4.1.

18.4.1. Data validation – national data collections

Name of the national data collection	Operations performed to this collection in order to improve data quality (e.g. checks between monthly, quarterly and annual, verification of time series, investigation of outliers…)
Household energy consumption survey	Improvements in the survey questionnaire, training of the interviewers, integration of new data sources and improvement of existing data sources in modelling…
Monthly solid, liquid, gaseous fuels collection survey	For improving data quality we perform checks between monthly and annual data, verification of time series, investigation of outliers...
Annual solid, liquid, gaseous fuels collection survey	For improving data quality we perform checks between monthly and annual data, verification of time series, investigation of outliers…
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	For improving data quality we perform data control, verification of time series, investigation of outliers and integration of new data sources…
Annual Electricity and Heat Survey	For improving data quality we perform checks between monthly and annual data, verification of time series, investigation of outliers…
Monthly Electricity and heat Survey	For improving data quality we perform checks between monthly and annual data, verification of time series, investigation of outliers…

18.5. Data compilation

See table under 18.5.2.

18.5.1. Imputation - rate

Not requested for this metadata collection.

18.5.2. Data compilation – data collections

Name of the national data collection	Additional techniques used for the compilation of the final data set	Details
Household energy consumption survey	Weighting values Imputing missing/non-response rate Estimation techniques Conversion factors used at national level Grossing up the sample Outliers are aligned or streamlined Incorrect data is adjusted or corrected	Weighting values, imputing, grossing up etc. are used for compilation of household survey data, while estimation techniques are used in modelling.
Monthly solid, liquid, gaseous fuels collection survey	Imputing missing/non-response rate Estimation techniques Cross-checking techniques Incorrect data is adjusted or corrected	Not available.
Annual solid, liquid, gaseous fuels collection survey	Imputing missing/non-response rate Estimation techniques Cross-checking techniques Incorrect data is adjusted or corrected	Not available.
Annual statistical survey on the consumption of energy, fuels and selected petroleum products	Weighting values Imputing missing/non-response rate Outliers are aligned or streamlined Conversion factors used at national level Cross-checking techniques Grossing up the sample Incorrect data is adjusted or corrected	The imputation is performed for the key missing units, based on the historical value method.
Annual Electricity and Heat Survey	Cross-checking techniques Incorrect data is adjusted or corrected	Not available.
Monthly Electricity and heat Survey	Cross-checking techniques Incorrect data is adjusted or corrected	Not available.

18.6. Adjustment

See 18.6.1.

18.6.1. Seasonal adjustment

Not applicable.

19. Comment

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Related metadata

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Annexes

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Accuracy