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For any question on data and metadata, please contact: EUROPEAN STATISTICAL DATA SUPPORT |
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1.1. Contact organisation | National Statistical Institute |
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1.2. Contact organisation unit | Environmental and Energy Accounts |
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1.5. Contact mail address | 2 Panayot Volov str., 1038 Sofia, Bulgaria |
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2.1. Metadata last certified | 29/09/2023 | ||
2.2. Metadata last posted | 29/09/2023 | ||
2.3. Metadata last update | 29/09/2023 |
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3.1. Data description | |||
Physical energy flow accounts (PEFA) is one module of the European environmental-economic accounts - Regulation (EU) 691/2011 Annex VI. PEFA record the flows of energy (in terajoules) from the environment to the economy (natural inputs), within the economy (products), and from the economy back to the environment (residuals), using the accounting framework of physical supply and use tables. PEFA provide information on energy flows arranged in a way fully compatible with concepts, principles, and classifications of national accounts – thus enabling integrated analyses of environmental, energy and economic issues e.g. through environmental-economic modelling. PEFA complement the traditional energy statistics, balances and derived indicators which are the main reference data source for EU energy policies.
The PEFA questionnaire is available on Eurostat's website: https://ec.europa.eu/eurostat/web/environment/methodology |
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3.2. Classification system | |||
Physical energy flow accounts (PEFA) datasets have the following dimensions:
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3.3. Coverage - sector | |||
The data set covers the entire national economy as defined in national accounts (ESA 2010, paragraph 2.04), as well as its physical relation to economies in the rest of the world and the environment.
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3.4. Statistical concepts and definitions | |||
Physical energy flow accounts (PEFA) are conceptually rooted in the System of Environmental-Economic Accounting (SEEA) which is an international statistical standard. The SEEA central framework provides standard concepts, definitions, classifications, accounting rules and tables for the provision of statistics on the environment and its relationship with the economy. |
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3.5. Statistical unit | |||
Data refer to activities of resident economic units in the sense of SEEA CF 2012 and national accounts (ESA), including households. |
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3.6. Statistical population | |||
The national economy is as defined in SEEA CF 2012 and national accounts (ESA); i.e. all economic activities undertaken by resident units (see ESA 2010, paragraph 2.04). A unit is said to be a resident unit of a country when it has a centre of economic interest in the economic territory of that country, that is, when it engages for an extended period (1 year or more) in economic activities in that territory. |
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3.7. Reference area | |||
The reference area is the economic territory as defined in SEEA CF 2021 and National accounts (ESA). |
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3.8. Coverage - Time | |||
2014-2021 |
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3.9. Base period | |||
Not applicable. |
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The unit of measure is terajoule (TJ). |
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The data refer to the calendar year. |
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6.1. Institutional Mandate - legal acts and other agreements | |||
PEFA are legally covered by Regulation (EC) No. 691/2011 on European environmental economic accounts as amended by Regulation (EU) No. 538/2014. EEEA currently include six modules (air emissions accounts, environmentally related taxes by economic activity, economy-wide material flow accounts, environmental protection expenditure accounts, environmental goods and services sector accounts, and physical energy flow accounts). |
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6.2. Institutional Mandate - data sharing | |||
Not applicable. |
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7.1. Confidentiality - policy | |||
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7.2. Confidentiality - data treatment | |||
Individual data are not published in accordance with article 25 of the Law on Statistics. The publishing of individual data can be performed only in accordance with article 26 of the same law. |
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8.1. Release calendar | |||
Data are not published at national level. |
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8.2. Release calendar access | |||
Data are not published at national level. |
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8.3. Release policy - user access | |||
Data are not published at national level. |
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Data are disseminated annualy only to Eurostat. |
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10.1. Dissemination format - News release | |||
No news realeses linked to the data. Data are transmitted only to Eurostat. |
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10.2. Dissemination format - Publications | |||
No publications linked to the data. Data are transmitted only to Eurostat. |
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10.3. Dissemination format - online database | |||
No on-line databases for PEFA data at national level. Data are transmitted only to Eurostat. |
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10.3.1. Data tables - consultations | |||
Will be calculated and provided by EUROSTAT. |
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10.4. Dissemination format - microdata access | |||
Not applicable. |
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10.5. Dissemination format - other | |||
Not available |
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10.5.1. Metadata - consultations | |||
Will be calculated and provided by EUROSTAT. |
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10.6. Documentation on methodology | |||
No national reference metadata files and methodological papers. Data are produced in line with the Eurostat guidelines in the PEFA Manual 2014 as well as the improvements and clarifications of methodological issues by the Working Group on Environmental Accounts. |
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10.6.1. Metadata completeness - rate | |||
Will be calculated and provided by EUROSTAT. |
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10.7. Quality management - documentation | |||
A quality report by template is prepared and submited to Eurostat every year |
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11.1. Quality assurance | |||
Quality assurance is determined by European Statistics code of Practice and a common framework for quality managment in the National Statistical Institute. |
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11.2. Quality management - assessment | |||
Data provide comparable information between countries, as they are produced on the base of the annual energy questionnaires, submited to Eurostat (Regulation (EU) 1099/2008 and all its ammendments) and the IT tool PEFA_Builder. Data are with good quality. |
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12.1. Relevance - User Needs | |||
Not available |
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12.2. Relevance - User Satisfaction | |||
There is no available feedback on user satisfaction. |
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12.3. Completeness | |||
Data meet the requirements of the Regulation (EC) No 691/2011 on European environmental economic accounts and its amendment in terms of the observed indicators, scope of energy products and structure of supply and use tables. |
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12.3.1. Data completeness - rate | |||
Will be calculated and provided by EUROSTAT. |
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13.1. Accuracy - overall | |||
Not applicable |
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13.2. Sampling error | |||
Not applicable to statistical accounts. |
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13.2.1. Sampling error - indicators | |||
Not applicable to statistical accounts. |
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13.3. Non-sampling error | |||
Not applicable to statistical accounts. |
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13.3.1. Coverage error | |||
Not applicable to statistical accounts. |
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13.3.1.1. Over-coverage - rate | |||
Not applicable to statistical accounts. |
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13.3.1.2. Common units - proportion | |||
Not applicable to statistical accounts. |
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13.3.2. Measurement error | |||
Not applicable to statistical accounts. |
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13.3.3. Non response error | |||
Not applicable to statistical accounts. |
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13.3.3.1. Unit non-response - rate | |||
Not applicable to statistical accounts. |
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13.3.3.2. Item non-response - rate | |||
Not applicable to statistical accounts. |
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13.3.4. Processing error | |||
Not applicable to statistical accounts. |
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13.3.5. Model assumption error | |||
Not applicable to statistical accounts. |
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14.1. Timeliness | |||
21 months after the reference period– transmission to Eurostat; no national release |
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14.1.1. Time lag - first result | |||
Not applicable. |
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14.1.2. Time lag - final result | |||
Not applicable. |
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14.2. Punctuality | |||
Not applicable. |
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14.2.1. Punctuality - delivery and publication | |||
Will be calculated and provided by EUROSTAT. |
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15.1. Comparability - geographical | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Data on PEFA are compiled according to international guidelines and insofar comparable. Application of the PEFA Builder tool ensures comparability to a certain extent. |
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15.1.1. Asymmetry for mirror flow statistics - coefficient | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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15.2. Comparability - over time | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Please see the table in 15.2.1.1. |
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15.2.1. Length of comparable time series | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Will be calculated and provided by EUROSTAT. |
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15.2.1.1. Comparability - over time detailed | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Please use below table for explaining b)-flags (breaks in time series): No breaks in time series.
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15.3. Coherence - cross domain | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
See the details in the following subcomponents. |
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15.3.1. Coherence - sub annual and annual statistics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable; reported PEFA data are only annual. |
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15.3.2. Coherence - National Accounts | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PEFA data are coherent with ESA supply and use tables, ensured by the accounting framework and the residence principle applied.. |
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15.3.3. Do you cooperate with national colleagues compiling AEA? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
There is a good cooperation with national colleagues compiling AEA. |
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15.3.4. Are there compilation elements that PEFA compilers jointly undertake with AEA compilers (e.g. distribution of road transport fuel use and emissions by NACE)? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
AEA compilers use as auxilary data the same data sourses as PEFA compilers - Energy balances data, administrative data about allocation of transport on residence principle and a detailed breakdown of economic activities by NACE Rev.2 (2-digits). |
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15.3.5. Do you report in PEFA imports and exports according to the SEEA-CF concepts for trade in goods (see SEEA-CF section 3.3.3, paras. 3.121 ff., and para. 1.46)? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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15.3.6. Do you perform cross-domain plausibility checks between your PEFA data on air transport versus OECD's data on CO2-emissions of air transport? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
There are no cross-domain plausibility checks between PEFA data on air transport versus OECD's data on CO2-emissions of air transport at national level. Such checks are performed at Eurostat level. |
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15.3.7. Do you perform cross-domain plausibility checks between PEFA data points and corresponding data points in energy statistics (see PEFA validation rules)? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
There are cross-domain plausibility checks between PEFA data points and corresponding data points in energy statistics.The main data sources for compiling PEFA are annual energy balances data and disaggregated final energy consumption data in households. |
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15.3.8. Do you perform cross-domain plausibility checks between PEFA data points and the corresponding data points in economy-wide material flow accounts (EW-MFA) (see PEFA validation rules)? | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The corresponding data points between PEFA and EW-MFA - the transformation use of non-renewable natural energy inputs and the domestic extraction of certain energy products, are plausible as annual Energy statisitcs data are main data sources for the both accounts. |
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15.4. Coherence - internal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Eurostat's validation procedures should ensure full internal consistency, at least for the mandatory data points. |
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Costs related to the collection and production of statistical data are announced annually in the National Statistical Program. No specific studies on the burden of the respondents as PEFA are compiled annually, based on an existing statistical data and administrative information as data sources. Statistical data are taken from the National energy balances (6 Eurostat/IEA annual energy questionnaires) according to Regulation (EC) 1099/2008 and all its amendmets. Administrative data from DG Civil Aviation Administration and National Revenue Agency together with internal data from other statistical domains (Transport statistics and Energy statistics) are used as well in order to apply the residence principle. Additional internal information about a detailed breakdown of economic activities by NACE Rev.2 A64 is obtained from the Energy statistics – from the regular annual statistical survey “Fuels and Energy Consumption”, described in specific details below in 18.1.5. For populating PEFA tables, the Eurostat IT tool “PEFA Builder” is used. The production of PEFA takes by means of estimations 30 - 40 days full time work of at least two experts.In case of revisions of previous reference periods data, the working time for production of PEFA increase significantly and may even take 2 and more months of full time working of more than 2 experts. Currently, one expert in the field of Energy statistics works on compiling PEFA.
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17.1. Data revision - policy | |||
Generally revisions are made in case of changes in the methodology and revisions in the annual energy questionnaires. |
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17.2. Data revision - practice | |||
Revisions are made in result of changes in main data sources, in methodology, in classification used, or in case of incorrect data - omissions or inaccuracies in data.
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17.2.1. Data revision - average size | |||
Will be calculated and provided by EUROSTAT. |
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18.1. Source data | |||
Data sources used to produce physical energy flow accounts are described in the following sub-concepts. |
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18.1.1. Which are the main data sources you employ for the use of natural energy inputs (i.e. who is extracting)? | |||
National energy balances (6 Eurostat/IEA annual energy questionnaires). |
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18.1.2. Which are the main data sources you employ for supply of energy products (e.g. electricity, refinery products etc.)? | |||
National energy balances (6 Eurostat/IEA annual energy questionnaires). |
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18.1.3. Which are the main data sources you employ for the transformation use by energy transforming entities (NACE 2-digit divisions)? | |||
National energy balances (6 Eurostat/IEA annual energy questionnaires). |
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18.1.4. Which are the main data sources you employ for the end use by end user entities (including non-energy use)? | |||
National energy balances (6 Eurostat/IEA annual energy questionnaires). |
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18.1.5. Which auxiliary data do you use to develop 'distribution keys' to assign energy use to the detailed breakdown of production activities (NACE 2-digit divisions) and categories of household consumption? | |||
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18.1.6. Do you use the PEFA builder? If yes: for populating the PEFA Tables, or for control only? | |||
The PEFA Builder is used for populating the PEFA Tables. |
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18.1.7. Which data sources do you use to make adjustments for the residence principle? | |||
For allocation of transport on residence principle, the following data sources are used:
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18.2. Frequency of data collection | |||
annual |
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18.3. Data collection | |||
PEFA are compiled annually, based on an existing statistical data and administrative information as data sources. |
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18.4. Data validation | |||
For compiling PEFA questionnaire, the checked and validated by Eurostat and International Energy Agency data on Energy balances are used. In addition, the Eurostat IT tool PEFA Builder is used to produce PEFA data. This tool contains in-built automatic rules for internal consistency of the data for a given reporting period in line with the Technical note Validation rules for PEFA. Manual checks are made in 2 directions:
In case of differences in some of the above mentioned directions, logical explanations are sought or corrections are made where necessary. Energy domain as a main data source for PEFA, provides highly comparable annual energy statistics. Energy data is produced on the basis of a standardised and internationally agreed methodology (Eurostat - OECD/IEA - UNECE). In general, the energy statistics produced is coherent with the International Recommendations for Energy Statistics adopted by the United Nations Statistical Commission. Comparability over time is ensured with a solid methodology harmonised on international level that is stable over long periods. Energy balances are highly coherent with other annual energy statistics. Data are checked in detail for internal consistency/coherence. Detailed checks involve the consistency of time series, detection of outliers, efficiency of energy transformation processes and also checks on utilization factors. Administrative data as additional sources are checked for completeness in terms of scope and changes compared to the previous year. |
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18.5. Data compilation | |||
The Eurostat IT tool PEFA Builder is used to produce PEFA data. |
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18.5.1. Imputation - rate | |||
Not applicable. |
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18.5.2. Do you assign all supply of electricity and heat to NACE D35, or do you assign some to other NACE divisions than D35? Is the assignment you did fully aligned to the ESA monetary supply table submitted by your country? | |||
The assignment of Autoproducers was fully compatible with the ESA supply and use tables - as a secondary activity production of electricity and heat by industries, i.e. the produced energy by autoproducers as a result of their secondary activity production of electricity and/or heat was assigned to corresponding NACE of their principal activity not to NACE D35. |
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18.5.3. Which method do you use for the allocation of road transport energy use to NACE industries and households? | |||
For allocation of road transport energy use to NACE industries and households, the following method is used:
As result: Total fuel consumption = NACE A64 consumption by sectors + households’ consumption. |
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18.5.4. Which method do you use for the allocation of energy use to detailed service industries (i.e. NACE 2-digit divisions 55-98)? | |||
The same method as for development of 'distribution keys' to assign energy use to the detailed breakdown of economic activities (NACE 2 digit divisions), explained in 18.1.5. |
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18.5.5. How do you ensure a coherent assignment of energy use to economic activities (i.e. the use of energy products by a given production activity (NACE A*64 division) reported in PEFA must be coherent with the emissions reported in AEA)? | |||
The modules of PEFA and AEA follow the reporting framework. AEA uses as auxilary data the same data sourses as PEFA - Energy balances data, administrative data about allocation of transport on residence principle and a detailed breakdown of economic activities by NACE Rev.2 (2-digits). |
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18.6. Adjustment | |||
Not applicable. |
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18.6.1. Seasonal adjustment | |||
Not applicable. |
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