Energy Indicators for Sustainable Development: Guidelines and Methodologies International Atomic Energy Agency United Nations Department of Economic and Social Affairs International Energy Agency Eurostat European Environment Agency



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METHODOLOGICAL DESCRIPTION
(a) Underlying Definitions and Concepts: This indicator aggregates renewable 
energy options with respect to TPES, TFC and electricity generation and generating 
capacity.
Renewable energy includes both combustible and non-combustible renewables. 
Non-combustible renewables include geothermal, solar, wind, hydro, tide and wave 
energy. For geothermal energy, the energy quantity is the enthalpy of the geothermal 
heat entering the process. For solar, wind, hydro, tide and wave energy, the quantities 
entering electricity generation are equal to the electrical energy generated. Electricity 
is accounted for at the same heat value as electricity in final consumption (i.e. 1 
terawatt hour [TWh] equals 0.086 million tonnes of oil equivalent [Mtoe]). Direct use 
of geothermal and solar heat and heat from heat pumps is also included. 
The combustible renewables and waste (CRW) consist of biomass (fuelwood, vegetal 
waste, ethanol) and animal products (animal materials/wastes and sulphite lyes), 
municipal waste (wastes produced by the residential, commercial and public service 
sectors that are collected by local authorities for disposal in a central location for the 
production of heat and/or power) and industrial waste. 
(b) Measuring Methods: This indicator is computed by calculating the ratio of the 
consumption and production of renewables to total final energy supply and 
production. 
The share of renewables in electricity is the electricity generated from renewables 
divided by total electricity use. 
Energy use is measured in terms of heat content based on specific net calorific values 
(NCVs). 
For electricity generating capacity, the indicator corresponds to the shares of 
renewables in overall capacity. 
(c) Limitations of the Indicator: Data on particular renewables for a number of 
developing countries might be a limitation. 

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