# Commission Delegated Regulation (EU) No 244/2012 of 16 January 2012 supplementing Directive 2010/31/EU of the European Parliament and of the Council on the energy performance of buildings by establishing a comparative methodology framework for calculating cost-optimal levels of minimum energy performance requirements for buildings and building elements (Text with EEA relevance), Division 2.1

Extent: E+W+S+N.I.

Report in table format the characteristics of selected variants/measures/packages that are applied for the cost-optimal calculation. Please start with the most common technologies and solutions and then move towards the more innovative ones. If there is evidence from previous calculations that measures are far from being cost-optimal, no table has to be filled in but this should be reported separately to the Commission. The format below can be used, but please note that the examples listed are purely illustrative.
Table 4
Illustrative table for listing selected variants/measures
Each calculation should refer to the same comfort level. Pro forma each variant/package/measure should provide the acceptable comfort. If different comfort levels are taken into account, the base of the comparison will be lost.
Measure
Reference case
Variant 1
Variant 2
Etc. …
Roof insulation
Wall insulation
Windows
5,7 W/m2K
(description)
2,7 W/m2K
(description)
1,9 W/m2K
(description)
Share of window area of total building envelope
Building-related measures (thermal mass, etc.)
Heating system
DHW
Ventilation system (incl. night ventilation)
Space cooling system
Measures based on RES
Change of energy carrier
Etc.
The listing of measures is purely illustrative.
For the building envelope: in W/m2K
For systems: efficiency
Several levels of improvements can be selected (for example: different thermal transmittance values for windows)

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Source: https://www.legislation.gov.uk/eur/2012/244/annex/III/division/2/division/2.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-244/annex-III/division-2/division-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.