‘EUA Forward Price’, in EUR, means the simple average of the daily one-year forward EUA prices (closing offer prices) for delivery in December of the year for which the aid is granted, as observed in a given EU carbon exchange from 1 January to 31 December of the year preceding the year for which the aid is granted.
For example, for aid granted for 2016, it is the simple average of the December 2016 EUA closing offer prices observed from 1 January 2015 to 31 December 2015 in a given EU carbon exchange.
The source of the definition - European Commission Communication on Guidelines on Certain State Aid Measures in the Context of the Greenhouse Gas Emission Allowance Trading Scheme Post 2012 C(2012) 3230 final {SWD(2012) 130 final} {SWD(2012) 131 final} of 22 May 2012.