Electric Utilities Sector Supplement - Global Reporting Initiative

Indicator Protocols Set: EC
IP
&
EUSS
EU11: Average generation efficiency of
thermal plants by energy source and by
regulatory regime.
1. Relevance
Improved operational efficiency contributes towards
sustainable development through cost reduction and
emissions reduction. It can also influence national
energy security. Improvements in generation efficiency
reduce the volumes of oil/gas and other fuel required
for electricity and useful heat generation and reduces
emissions.
2. Compilation
2.1 Indicate assumptions and confidence level of the
figures reported for this indicator.
2.2 Identify overall efficiency (electricity sent-out
+ heat supplied/ energy input), in addition to
electricity efficiency, if operating a combined heat
and power plant.
2.3 Report the average annual efficiency of the fleet by
energy source and by regulatory regime. Express
the net efficiency as a percentage (electricity sentout/energy
input )
3. Definitions
Refer to G3 definition of Primary (Energy) Source.
Thermal plants
Thermal plants are power plants fueled by hydrocarbon
energy sources.
Generation efficiency
Generation efficiency is the ratio of gross energy going
into a plant against the net energy (electricity, and if CHP,
heat) supplied.
Regulatory regime
Regulatory regime refers to local, sub-national, national
or regional area where there is a common regulatory
framework.
EU
EU
4. Documentation
Plant manuals, engineering and operational reports.
5. References
None.
Version 3.0/EUSS Final Version
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