η = the ratio between total gross production of electricity and the primary energy consumption for the production of electricity and shall be calculated as an EU average based on Eurostat data.
Is é η an choibhéis idir an olltáirgeadh leictreachais iomlán agus an.tomhaltas fuinnimh phríomhúil chun leictreachais a tháirgeadhagus déanfar é a ríomh mar mheán don Aontas Eorpach bunaithe ar shonraí Eurostat.