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)
Article 1
Subject matter and scope
Article 2
Definitions
Article 3
Comparative methodology framework
Article 4
Comparison of the calculated cost-optimal levels with current minimum energy performance requirements
Article 5
Review of the cost-optimal calculations
Article 6
Reporting
Article 7
Entry into force and application
ANNEX I
Cost-optimal methodology framework
1. ESTABLISHMENT OF REFERENCE BUILDINGS
2. IDENTIFICATION OF ENERGY EFFICIENCY MEASURES, MEASURES BASED ON RENEWABLE ENERGY SOURCES AND/OR PACKAGES AND VARIANTS OF SUCH MEASURES FOR EACH REFERENCE BUILDING
3. CALCULATION OF THE PRIMARY ENERGY DEMAND RESULTING FROM THE APPLICATION OF SUCH MEASURES AND PACKAGES OF MEASURES TO A REFERENCE BUILDING
4. CALCULATION OF THE GLOBAL COST IN TERMS OF NET PRESENT VALUE FOR EACH REFERENCE BUILDING
4.1.
Categories of costs
4.2.
General principles for cost calculation
4.3.
Calculation of global costs for a financial calculation
4.4.
Calculation of global costs for the macroeconomic calculation
5. UNDERTAKING A SENSITIVITY ANALYSIS FOR COST INPUT DATA INCLUDING ENERGY PRICES
6. DERIVATION OF A COST-OPTIMAL LEVEL OF ENERGY PERFORMANCE FOR EACH REFERENCE BUILDING
ANNEX II
Information on estimated long-term energy price developments
Information on estimated long-term carbon price developments
Carbon price evolution |
2020 |
2025 |
2030 |
2035 |
2040 |
2045 |
2050 |
Reference (frag. action, ref. fossil f. prices) |
16,5 |
20 |
36 |
50 |
52 |
51 |
50 |
Effect. Techn. (glob. action, low fossil f. prices) |
25 |
38 |
60 |
64 |
78 |
115 |
190 |
Effect. Techn. (frag. action, ref. fossil f. prices) |
25 |
34 |
51 |
53 |
64 |
92 |
147 |
Source: Annex 7.10 to http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=SEC:2011:0288:FIN:EN:PDF |
ANNEX III
Reporting template that Member States may use for reporting to the Commission pursuant to Article 5(2) of Directive 2010/31/EU and Article 6 of this Regulation
1. REFERENCE BUILDINGS
For existing buildings |
Building geometry(1) |
Shares of window area on the building envelope and windows with no solar access |
Floor area m2 as used in building code |
Description of the building(2) |
Description of the average building technology(3) |
Average energy performance kWh/m2, a (prior to investment) |
Component level requirements (typical value) |
(1) Single family buildings and subcategories |
|||||||
Subcategory 1 |
|
|
|
|
|
|
|
Subcategory 2 etc. |
|
|
|
|
|
|
|
(2) Apartment blocks and multifamily buildings and subcategories |
|||||||
|
|
|
|
|
|
|
|
(3) Office buildings and subcategories |
|||||||
|
|
|
|
|
|
|
|
(4) Other non-residential building categories |
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
For new buildings |
Building geometry(4) |
Shares of window area on the building envelope and windows with no solar access |
Floor area m2 as used in building code |
Typical energy performance kWh/m2, a |
Component level requirements |
(1) Single family buildings and subcategories |
|||||
Subcategory 1 |
|
|
|
|
|
Subcategory 2 etc. |
|
|
|
|
|
(2) Apartment blocks and multifamily buildings and subcategories |
|||||
|
|
|
|
|
|
(3) Office buildings and subcategories |
|||||
|
|
|
|
|
|
(4) Other non-residential building categories |
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
Quantity |
Unit |
Description |
||||
Calculation |
method and tool(s) |
|
short description of the calculation method adopted (e.g. with reference to EN ISO 13790) and comment on the calculation tool(s) used |
||||
Primary energy conversion factors |
|
values of delivered to primary energy conversion factors (per energy carrier) used for the calculation |
|||||
Climate condition |
location |
|
name of the city with indication of latitude and longitude |
||||
heating degree-days |
|
HDD |
to be evaluated according to EN ISO 15927-6, specifying the period of calculation |
||||
cooling degree-days |
|
CDD |
|||||
source of climatic dataset |
|
provide references on climatic dataset used for the calculation |
|||||
terrain description |
|
e.g. rural area, sub-urban, urban. Explain if the presence of nearby buildings has been considered or not |
|||||
Building geometry |
Length × Width × Height |
|
m × m × m |
related to the heated/conditioned air volume (EN 13790) and considering as ‘length’ the horizontal dimension of the façade south-oriented |
|||
number of floors |
|
— |
|
||||
S/V (surface-to-volume) ratio |
|
m2/m3 |
|
||||
ratio of window area over total building envelope area |
South |
|
% |
|
|||
East |
|
% |
|
||||
North |
|
% |
|
||||
West |
|
% |
|
||||
orientation |
|
° |
azimuth angle of the South façade (deviation from the South direction of the ‘South’ oriented façade) |
||||
Internal gains |
building utilisation |
|
according to the building categories proposed in Annex 1 to Directive 2010/31/EU |
||||
average thermal gain from occupants |
|
W/m2 |
|
||||
specific electric power of the lighting system |
|
W/m2 |
total electric power of the complete lighting system of the conditioned rooms (all lamps + control equipment of the lighting system) |
||||
specific electric power of electric equipment |
|
W/m2 |
|
||||
Building elements |
average U-value of walls |
|
W/m2K |
weighted U-value of all walls: U_wall = (U_wall_1 · A_wall_1 + U_wall_2 · A_wall_2 + … + U_wall_n · A_wall_n)/(A_wall_1 + A_wall_2 + … + A_wall_n); here are: U_wall_i = Uvalue of wall type i; A_wall_i = total surface of wall type i |
|||
average U-value of roof |
|
W/m2K |
similar to walls |
||||
average U-value of basement |
|
W/m2K |
similar to walls |
||||
average U-value of windows |
|
W/m2K |
similar as for walls; it should take into account the thermal bridge due to the frame and dividers (according to EN ISO 10077-1) |
||||
thermal bridges |
total length |
|
m |
|
|||
average linear thermal transmittance |
|
W/mK |
|
||||
thermal capacity per unit area |
external walls |
|
J/m2K |
to be evaluated according to EN ISO 13786 |
|||
internal walls |
|
J/m2K |
|||||
slabs |
|
J/m2K |
|||||
type of shading systems |
|
e.g. solar blind, roll-up shutter, curtain, etc. |
|||||
average g-value of |
glazing |
|
— |
total solar energy transmittance of glazing (for radiation perpendicular to the glazing), here: weighted value according to the area of different windows (to be evaluated according to EN 410) |
|||
glazing + shading |
|
— |
total solar energy transmittance for glazing and an external solar protection device has to be evaluated according to EN 13363-1/-2 |
||||
Infiltration rate (air changes per hour) |
|
1/h |
e.g. calculated for a pressure difference inside/outside of 50 Pa |
||||
Building systems |
ventilation system |
air changes per hour |
|
1/h |
|
||
heat recovery efficiency |
|
% |
|
||||
efficiencies of heating system |
generation |
|
% |
to be evaluated according to EN 15316-1, EN 15316-2-1, EN 15316-4-1, EN 15316-4-2, EN 15232, EN 14825, EN 14511 |
|||
distribution |
|
% |
|||||
emission |
|
% |
|||||
control |
|
% |
|||||
efficiencies of cooling system |
generation |
|
% |
to be evaluated according to EN 14825, EN 15243, EN 14511, EN 15232 |
|||
distribution |
|
% |
|||||
emission |
|
% |
|||||
control |
|
% |
|||||
efficiencies of DHW system |
generation |
|
% |
to be evaluated according to EN 15316-3-2, EN 15316-3-3 |
|||
distribution |
|
% |
|||||
Building Setpoints and Schedules |
temperature setpoint |
winter |
|
°C |
indoor operative temperature |
||
summer |
|
°C |
|||||
humidity setpoint |
winter |
|
% |
indoor relative humidity, if applicable: ‘Humidity has only a small effect on thermal sensation and perceived air quality in the rooms of sedentary occupancy’ (EN 15251) |
|||
summer |
|
% |
|||||
operation schedules and controls |
occupancy |
|
provide comments or references (EN or national standards, etc.) on the schedules used for the calculation |
||||
lighting |
|
||||||
appliances |
|
||||||
ventilation |
|
||||||
heating system |
|
||||||
cooling system |
|
||||||
Energy building need/use |
(thermal) energy contribution of main passive strategies implemented |
|
|
kWh/a |
e.g. solar greenhouse, natural ventilation, day-lighting, etc. |
||
|
|
kWh/a |
|||||
|
|
kWh/a |
|||||
energy need for heating |
|
kWh/a |
heat to be delivered to or extracted from a conditioned space to maintain the intended temperature conditions during a given period of time |
||||
energy need for cooling |
|
kWh/a |
|||||
energy need for DHW |
|
kWh/a |
heat to be delivered to the needed amount of domestic hot water to raise its temperature from the cold network temperature to the prefixed delivery temperature at the delivery point |
||||
energy need for other (humidification, dehumidification) |
|
kWh/a |
latent heat in the water vapour to be delivered to or extracted from a conditioned space by a technical building system to maintain a specified minimum or maximum humidity within the space (if applicable) |
||||
energy use for ventilation |
|
kWh/a |
electrical energy input to the ventilation system for air transport and heat recovery (not including the energy input for preheating the air) and energy input to the humidification systems to satisfy the need for humidification |
||||
energy use for internal lighting |
|
kWh/a |
electrical energy input to the lighting system and other appliances/systems |
||||
energy use for other (appliances, external lighting, auxiliary systems, etc.) |
|
kWh/a |
|||||
Energy generation at the building site |
thermal energy from RES (e.g. thermal solar collectors) |
|
kWh/a |
energy from renewable sources (that are not depleted by extraction, such as solar energy, wind, water power, renewed biomass) or co-generation |
|||
electrical energy generated in the building and used onsite |
|
kWh/a |
|||||
electrical energy generated in the building and exported to the market |
|
kWh/a |
|||||
Energy consumption |
delivered energy |
electricity |
|
kWh/a |
energy, expressed per energy carrier, supplied to the technical building systems through the system boundary, to satisfy the uses taken into account (heating, cooling, ventilation, domestic hot water, lighting, appliances, etc.) |
||
fossil fuel |
|
kWh/a |
|||||
other (biomass, district heating/cooling, etc.) |
|
kWh/a |
|||||
primary energy |
|
kWh/a |
energy that has not been subjected to any conversion or transformation process |
||||
|
|
|
|
2. SELECTING VARIANTS/MEASURES/PACKAGES
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. |
|
|
|
|
3. CALCULATION OF THE PRIMARY ENERGY DEMAND OF THE MEASURES
3.1.
Energy Performance Assessment
3.2.
Energy demand calculation
Reference building |
||||||||||
Measure/package/variant of measures (as described in Table 4) |
Energy need |
Energy use |
Delivered energy specified by source |
Primary energy demand in kWh/m2, a |
Energy reduction in primary energy compared to the reference building |
|||||
for heating |
for cooling |
heating |
cooling |
ventilation |
DHW |
lighting |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4. GLOBAL COST CALCULATION
Variant/package/measure as given in Table 5 |
Initial investment cost (referred to starting year) |
Annual running cost |
Calculation period(5) 20, 30 years |
Cost of greenhouse gas emissions (only for the macroeconomic calculation) |
Residual value |
Discount rate (different rates for macroeconomic and financial calculation) |
Estimated economic lifetime |
Disposal cost (when applicable) |
Global cost calculated |
||
Annual maintenance cost |
Operational cost |
|
Energy cost(6) by fuel with the medium energy price scenario |
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5. COST-OPTIMAL LEVEL FOR REFERENCE BUILDINGS
6. COMPARISON
Reference building |
Cost-optimal range/level (from-to) kWh/m2, a (for a component approach in the relevant unit) |
Current requirements for reference buildings kWh/m2, a |
Gap |
|
|
|
|