Energy Efficiency and Energy Consumption

Transcription

1 Energy Efficiency and Energy Consumption Peter Bach, Chief advisor Strategic Role on Energy Statistics 24 April 2013, Copenhagen

2 Basic energy statistic Primary energy consumption Final energy consumption Net Demand/Useful energy Split on end-use technologies Energy services

3 Final energy A bad measurement of end-use consumption A mix of primary energy (oil, gas, coal, biomass) and secondary energy (electricity, district heating) Includes local losses in conversion Rules for counting renewable energy

4 1 step: Net demand at sector level Transport 600 Construction Manufacturing 500 Fishing 400 Horticulture Agriculture and Forestry 300 Private Service 200 Retail Trade Wholesale 100 Public sector 0 Net Demand Final energy Multi-family Houses Single-family Houses

5 2 step: Split on end-uses/technologies Heat consumption Hot tap water Space healing and heat looses (windows, roof, walls, etc.) Electricity consumption Lighting, ventilation, cooling, communication, etc. Process in industry Consumption for different process (drying, melting, burning, distillation, etc.)

6 What shall we measure? Energy intensity/energy productivity Whole economy or at sector level? Energy efficiency Definition? Whole economy or at sector level? Energy savings Effect of policy measures additionality Each measure, combinations or at sector level? Energy consumption

7 Energy intensity Normally energy consumption per unit of economic output Toe per unit of GDP is a bad indicator for energy efficiency Don t show effect of structural change or structural difference Can be useful at sector level Toe per unit of value added

8 Energy efficiency Definition (from EED) energy efficiency means the ratio of output of performance, service, goods or energy, to input of energy; Energy service is the best measure of output Goods in physical terms can be a relevant indicator

9 Energy service Use of energy is a mean to fulfill the need for energy services It is not a goal by itself Examples on energy services: Right temperature in buildings (heating, cooling, ventilation) Light (daylight, lighting, quality) Preparation of food Production of goods Transport from home to work, to family, etc. Communication Goal: Fulfill the societies need for energy services as efficient as possible

10 The energy chain ULTIMATE END ENERGY WELFARE (human satisfaction) LIFESTYLE EFFICIENCY LIFESTYLE (work-leisure pattern, diet, household size, etc.) OVERALL EFFICIENCY ENERGY SERVICES (comfortable indoor climate, cooked meal, transport, etc.) END-USE EFFICIENCY END-USE TECHNOLOGIES (buildings, lamps, pumps, refrigerators,trains, etc.) SECONDARY ENERGY END-USE TRADE LINE (electricity, gasoline, district heat, gas, etc.) SUPPLY EFFICIENCY SUPPLY TECHNOLOGIES (power plants, refineries, photovoltaics, etc.) ULTIMATE MEANS Source: Jørgen S. Nørgaard PRIMARY ENERGY (coal, uranium, solar, Biomass, wind, etc.)

11 Data on energy services/output Heated area m2 For different types of buildings Stock of different appliances etc. Production in different branches In physical terms if possible Special focus on energy intensity sectors Person km Ton km

12 Measure of energy savings Definition (from EED) energy savings means an amount of saved energy determined by measuring and/or estimating consumption before and after implementation of an energy efficiency improvement measure, whilst ensuring normalisation for external conditions that affect energy consumption; Baseline is very important Autonomous and structural change Beyond energy statistic

13 Conclusions Strong political focus on energy efficiency and energy saving Need for more and better data on Energy consumption Energy services Thank you for your attention