
Article 1 
The harmonised efficiency reference values for separate production of electricity and heat shall be those set out in Annexes I and II respectively.
Article 2 

1. In respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply the correction factors set out in Annex III in order to adapt the harmonised efficiency reference values set out in Annex I to the average climatic situation in  the United Kingdom.If ... official meteorological data show differences in the annual ambient temperature of 5 °C or more,  in respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  may ... use several climate zones for the purpose of the first subparagraph using the method set out in Annex III.
2. In respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply the correction factors set out in Annex IV in order to adapt the harmonised efficiency reference values set out in Annex I to avoided grid losses.
3. If  in respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  applies both the correction factors set out in Annex III and those set out in Annex IV,  in respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply Annex III before applying Annex IV.
Article 3 

1. In respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply the harmonised efficiency reference values set out in Annex I relating to the year of construction of a cogeneration unit. Those harmonised efficiency reference values are applicable for 10 years from a cogeneration unit's year of construction.
2. From the eleventh year following the year of construction of a cogeneration unit,  in respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply the harmonised efficiency reference values which by virtue of paragraph 1 apply to a cogeneration unit of 10 years of age. These harmonised efficiency reference values are applicable for one year.
3. For the purposes of this Article, a cogeneration unit's year of construction is the calendar year during which the unit first produces electricity.
Article 4 

1. In respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  shall apply the harmonised reference values set out in Annex II relating to the year of construction of a cogeneration unit.
2. For the purposes of this Article, a cogeneration's unit year of construction is the year of construction for the purpose of Article 3.
Article 5 
If the investment cost relating to the retrofitting of a cogeneration unit exceeds 50 % of the investment cost for a new comparable cogeneration unit, the calendar year during which the retrofitted cogeneration unit first produces electricity shall be considered as the year of construction of the retrofitted cogeneration unit for the purpose of Articles 3 and 4.
Article 6 
If the cogeneration unit is operated with more than one kind of fuel, the harmonised efficiency reference values for separate production shall be applied proportionally to the weighted mean of the energy input of the various fuels.
Article 7 
Decision 2011/877/EU is repealed.
Article 8 
This Regulation shall enter into force on the first day following that of its publication in the Official Journal of the European Union.
This Regulation shall apply from 1 January 2016.
...Done at Brussels, 12 October 2015.
For the Commission
The President
Jean-Claude JUNCKER
ANNEX I
Harmonised efficiency reference values for separate production of electricity 
In the table below the harmonised efficiency reference values for separate production of electricity are based on net calorific value and standard atmospheric ISO conditions (15 °C ambient temperature, 1,013 bar, 60 % relative humidity).


Category Type of fuel Year of construction
Before 2012 2012-2015 From 2016
Solids S1 Hard coal including anthracite, bituminous coal, sub-bituminous coal, coke, semi-coke, pet coke 44,2 44,2 44,2
S2 Lignite, lignite briquettes, shale oil 41,8 41,8 41,8
S3 Peat, peat briquettes 39,0 39,0 39,0
S4 Dry biomass including wood and other solid biomass including wood pellets and briquettes, dried woodchips, clean and dry waste wood, nut shells and olive and other stones 33,0 33,0 37,0
S5 Other solid biomass including all wood not included under S4 and black and brown liquor. 25,0 25,0 30,0
S6 Municipal and industrial waste (non-renewable) and renewable/bio-degradable waste 25,0 25,0 25,0
Liquids L7 Heavy fuel oil, gas/diesel oil, other oil products 44,2 44,2 44,2
L8 Bio-liquids including bio-methanol, bioethanol, bio-butanol, biodiesel and other bio-liquids 44,2 44,2 44,2
L9 Waste liquids including biodegradable and non-renewable waste (including tallow, fat and spent grain). 25,0 25,0 29,0
Gaseous G10 Natural gas, LPG, LNG and biomethane 52,5 52,5 53,0
G11 Refinery gases hydrogen and synthesis gas 44,2 44,2 44,2
G12 Biogas produced from anaerobic digestion, landfill, and sewage treatment 42,0 42,0 42,0
G13 Coke oven gas, blast furnace gas, mining gas, and other recovered gases (excluding refinery gas) 35,0 35,0 35,0
Other O14 Waste heat (including high temperature process exhaust gases, product from exothermic chemical reactions)   30,0
O15 Nuclear   33,0
O16 Solar thermal   30,0
O17 Geothermal   19,5
O18 Other fuels not mentioned above   30,0

ANNEX II
Harmonised efficiency reference values for separate production of heat 
In the table below the harmonised efficiency reference values for separate production of heat are based on net calorific value and standard atmospheric ISO conditions (15 °C ambient temperature, 1,013 bar, 60 % relative humidity).


Category Type of fuel: Year of construction
Before 2016 From 2016
Hot water Steam Direct use of exhaust gases Hot water Steam Direct use of exhaust gases
Solids S1 Hard coal including anthracite, bituminous coal, sub-bituminous coal, coke, semi-coke, pet coke 88 83 80 88 83 80
S2 Lignite, lignite briquettes, shale oil 86 81 78 86 81 78
S3 Peat, peat briquettes 86 81 78 86 81 78
S4 Dry biomass including wood and other solid biomass including wood pellets and briquettes, dried woodchips, clean and dry waste wood, nut shells and olive and other stones 86 81 78 86 81 78
S5 Other solid biomass including all wood not included under S4 and black and brown liquor. 80 75 72 80 75 72
S6 Municipal and industrial waste (non-renewable) and renewable/bio-degradable waste 80 75 72 80 75 72
Liquids L7 Heavy fuel oil, gas/diesel oil, other oil products 89 84 81 85 80 77
L8 Bio-liquids including bio-methanol, bioethanol, bio-butanol, biodiesel and other bio-liquids 89 84 81 85 80 77
L9 Waste liquids including biodegradable and non-renewable waste (including tallow, fat and spent grain). 80 75 72 75 70 67
Gaseous G10 Natural gas, LPG, LNG and biomethane 90 85 82 92 87 84
G11 Refinery gases hydrogen and synthesis gas 89 84 81 90 85 82
G12 Biogas produced from anaerobic digestion, landfill, and sewage treatment 70 65 62 80 75 72
G13 Coke oven gas, blast furnace gas, mining gas, and other recovered gases (excluding refinery gas) 80 75 72 80 75 72
Other O14 Waste heat (including high temperature process exhaust gases, product from exothermic chemical reactions) — — — 92 87 —
O15 Nuclear — — — 92 87 —
O16 Solar thermal — — — 92 87 —
O17 Geothermal — — — 92 87 —
O18 Other fuels not mentioned above — — — 92 87 —



ANNEX III
Correction factors relating to the average climatic situation and method for establishing climate zones for the application of the harmonised efficiency reference values for separate production of electricity  (a) 
Ambient temperature correction is based on the difference between the annual average temperature in  the United Kingdom  and standard atmospheric ISO conditions (15 °C).

The correction will be as follows:


 0,1 %-point efficiency loss for every degree above 15 °C;
 0,1 %-point efficiency gain for every degree under 15 °C.
When the average annual temperature in the United Kingdom is 10 °C, the reference value of a cogeneration unit in ... has to be increased by 0,5 %-points. (b) Ambient temperature correction applies only to gaseous fuels (G10, G11, G12, G13).
 (c) 
The borders of each climate zone will be constituted by isotherms (in full degrees Celsius) of the annual average ambient temperature which differ at least 4 °C. The temperature difference between the average annual ambient temperatures applied in adjacent climate zones will be at least 4 °C.
If, for example, for  the United Kingdom  the average annual ambient temperature is 12 °C in a certain location and 6 °C in a different location within  the United Kingdom, then in respect of Great Britain, the Secretary of State, and in respect of Northern Ireland, the Department for the Economy  has the option to introduce two climate zones, separated by an isotherm of 9 °C:
A first climate zone between the isotherms of 9 °C and 13 °C (4 °C difference) with an average annual ambient temperature of 11 °C, and

A second climate zone between the isotherms of 5 °C and 9 °C with an average annual ambient temperature of 7 °C.

ANNEX IV
Correction factors for avoided grid losses for the application of the harmonised efficiency reference values for separate production of electricity 

Connection voltage level Correction factor (Off-site) Correction factor (On-site)
≥ 345 kV 1 0,976
≥ 200 - < 345 kV 0,972 0,963
≥ 100 - < 200 kV 0,963 0,951
≥ 50 - < 100 kV 0,952 0,936
≥ 12 - < 50 kV 0,935 0,914
≥ 0,45 - < 12kV 0,918 0,891
< 0,45 kV 0,888 0,851
A 100 kWel cogeneration unit with a reciprocating engine driven with natural gas generates electricity at 380 V. Of this, 85 % is used for own consumption and 15 % is fed into the grid. The plant was constructed in 2010. The annual ambient temperature is 15 °C (so no climatic correction is necessary).
After the grid loss correction the resulting efficiency reference value for the separate production of electricity in this cogeneration unit would be (based on the weighted mean of the factors in this Annex):

Ref Εη = 52,5 % × (0,851 × 85 % + 0,888 × 15 %) = 45,0 %
