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Classification of physical flows: Part II

This article discusses the classification of physical flows, specifically focusing on three subsystems - energy, materials, and water. It examines the compatibility between these subsystems, industrial branch classifications, and the overlap between the subsystems and national accounts.

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Classification of physical flows: Part II

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  1. Classification of physical flows: Part II Roel Delahaye and Sjoerd Schenau Statistics Netherlands

  2. Content • Introduction • Main principles • CPC • Three subsystems • Industrial branches • Overlap between subsystems

  3. Three subsystems

  4. Introduction:One consistent classification • Compatibility between subsystems • Energy (Joules) • Materials (Kg) • Water (m3) • Compatible National accounts and physical accounts • Compatible industrial branches • Overlap consistently classified

  5. Usefulness CPC • Waste accounts:Not included are manure, discarded equipment, mineral wastes etc. No distinction between hazardous and non-hazardous waste. • Energy accounts:Not specified as energy carrier are biomass (except fuel wood), solid waste and gas like biogas. Sources electricity (solar, wind, coal etc.) not specified. • CPC seems not sufficient. More discussion will follow later this session

  6. Classification subsystems (I) • MFA: Build up from different data sources. Therefore double counting may occur. • - waste products my appear in NA data or international trade data. • - Dissipative losses may appear in the air, water and waste accounts.

  7. Classification of subsystems (II) • Waste accounts:Use the European Waste Statistic Regulation. • Other residual accounts:Use the classification presented in annex 4 of the SEEA. • Discussion on detailed classification sub-systems will follow later.

  8. Classification industrial branches • Recommendation:Compatible industrial branch classifications between subsystems. • Recommendation: ISIC industrial classification on a 2-digit division level for manufacturers and a 1-digit section level for all other industrial branches is sufficient • or is more detailed required ? • (see for example paper on SEEA-MFA)

  9. Overlap subsystems (I) • Are the following issues required to satisfy compatible classification of the three subsystems and the National accounts: • Materials - Energy: Materials in the MFA should be classified energetic or non energetic. • Materials - Energy:Classifications in the energy accounts should match the level in the MFA

  10. Overlap subsystems (II) • Energy - Water:Electricity generated by hydropower should be classified. • Materials – National accounts:in MFA a distinction between waste products and residuals must be made. • Are there issues regarding the overlap between the three subsystems (materials, energy and water) and the National accounts that have not been addressed here?

  11. Questions for the London Group • Do you agree that Compatible industrial branch classifications between subsystems is required for all three subsystems ? • 2. Is ISIC industrial classification on a 2-digit division level for manufacturers and a 1-digit section level for all other industrial branches sufficient ?

  12. Questions for the London Group • 3. Do you agree with a classification of waste according to the classification of the European Waste Statistic Regulation ? • 4. Do you agree with the residual classification (apart from solid waste) as presented in the SEEA 2003 ?

  13. Questions for the London Group • 5. Do you agree that materials in de MFA used for generating energy should be classified to its purpose of use ? • 6. Do you agree that electricity generated by hydropower should be classified? • 7. Do you agree that a distinction between waste products and waste residuals in the MFA should be made?

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