Building energy performance tool

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version: 2.0.

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Projects

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Project

Project name

Specify a project name. This name will be used when the variant is displayed in the result charts and tables.

Project Name

Please provide a project name

Location

Country

Select the country where your project is located. The selection impacts the following:

Climate: A selection of climate datasets is available for each country. Climate is further defined in the Reference city parameter.

Baseline building: The internal database of the tool provides baseline buildings with u-values, geometries, and HVAC systems to reflect the state-of-the-art in these countries for the three countries in the upper part of the selection: Egypt, Jordan, and Lebanon. The baseline buildings of the other countries are not developed by local partners-they only reflect an average of the BUILD_ME target countries.

Cost and prices: The internal database of the tool provides investment cost, energy prices, and other financial parameters (e.g. inflation rate) for the three countries in the upper part of the selection, i.e. Egypt, Jordan and Lebanon. The financial parameters of the other countries are derived from the BUILD_ME target countries by applying national cost indexes on their cost and prices.

Detailed information on cost (2.4), baseline buildings per country (3.1), and the climate's source are included in the manual.

Reference city

Select the city or region where your project is located. If it is not available, select the city that has the most similar climate conditions to the project's location. The selection only defines the climate conditions for the project.

For more information, see the detailed manual (Section 1.1.3).

Specify region

Only relevant for Egypt, Jordan, Lebanon. For other countries select General.

Select the description of an area that comes the closest to where the project is located. This impacts the baseline building, since they vary even within the country from e.g. urban to rural areas.

For more information, see the detailed manual (Section 1.1.3).

Country

Please provide a location

Reference city (representative climate for the selected climate region)

Please provide a location

Specify baseline

Building Type

Select building type

The building type defines the baseline building's specification, which is later compared to the entered project. The default input values (in the Input tab) are also based on the baseline building.

This selection affects default parameters in the calculation (daily profile of internal heat gains, other electricity and lighting, cooling load, DHW circulation system).

Special case - apartment in a multifamily house: Select MFH here. In the Input tab, enter only the surfaces against the outside as a wall (e.g. if the apartment wall orientated north is to the building hallway or neighbour apartment, enter 0 m^2 for walls orientated north or do not consider it in the total wall area).

For more information, see the detailed manual (Section 1.1.2).

Age group

Select if the building project will be newly constructed or if it is a renovation project for an already existing building.

This selection affects the financial calculation. For new construction, the cost of all elements and systems is considered. For a renovation, only the cost of the renovated elements or exchanged systems is considered. In the renovation case, an additional selection is available in the Input tab to mark if an element or system was changed during the project.

The cost to replace a system in an already existing building (renovation case) is higher than the installation of a new system into a new construction. Therefore, an additional percentage of cost (ca. 5%-10%) is added to the system's investment cost (detailed information in the manual).

For more information, see the detailed manual (Section 1.1.2).

Select building type

Please provide a building type

Age group

New construction or renvoation project

System selection ¹

System Selection

Space heating

Space cooling

Hot water

Mechanical ventilation

Lighting

Photovoltaics

¹ This can be still changed later

Input Modes

Base

Advanced

Both modes use the same calculation methodology. The base mode allows for non-technical or less experienced user to focus on the most relevant input parameters, while some very specific and detailed inputs are hidden. The tool sets default values for these parameters, based on the pre-selection in this tab, that meet most requirements. The advanced mode allows the user to adapt every input parameter. After clicking “next”, this can be still changed by going back to the general input tab.

Input My Own Cost

This mode allows the user to enter costs for envelope measures, HVAC or renewable systems of the building project.

Manual Final Energy Input

Enable the above toggle button only if the energy demand of the project is already determined (e.g. with another tool or methodology) and must not be calculated by this tool. In this case, the final energy demand by energy carrier is necessary, which can be entered after clicking “next”.

Geometry-related parameters

Building levels (floors)

Number of units

Net floor height (Floor to ceiling)

Net floor area (i.e. living area)

m²

Roof area opaque

m²

Orientation of the building (0 - 89°, where 0° indicates a façade oriented due south)

Façade area opaque (excluding windows)

m²

Share of facade oriented north

m²

Share of facade oriented east

m²

Share of facade oriented south

m²

Share of facade oriented west

m²

Window area (Total = transparent + frame)

m²

Share of windows oriented north

m²

Share of windows oriented east

m²

Share of windows oriented south

m²

Share of windows oriented west

m²

Share of windows oriented horizontal

m²

Area floor slab (ground plate)

m²

Wall

Wall renovation

Type (material)

Absorption (wall)

Specific heat capacity

J/(m²*K)

Mass distribution (standard: M)

U-value (wall)

W/(m²K)

Calculate U-Value

Material 1

Thickness 1

Material 2

Thickness 2

Material 3

Thickness 3

Material 4

Thickness 4

Material 5

Thickness 5

Material 6

Thickness 6

Material 7

Thickness 7

Material 8

Thickness 8

Thermal heat bridge (wall)

W/K

Roof

Roof renovation

Type (material)

Absorption (roof)

Specific heat capacity

J/(m²*K)

Mass distribution (standard: M)

U-value (roof)

W/(m²K)

Calculate U-Value (roof)

Material 1

Thickness 1

Material 2

Thickness 2

Material 3

Thickness 3

Material 4

Thickness 4

Material 5

Thickness 5

Material 6

Thickness 6

Material 7

Thickness 7

Material 8

Thickness 8

Thermal heat bridge (roof)

W/K

Slab (ground plate)

Slab renovation

Specific heat capacity

J/(m²*K)

U-value (slab)

W/(m²K)

Calculate U-Value (Slab)

Material 1

Thickness 1

Material 2

Thickness 2

Material 3

Thickness 3

Material 4

Thickness 4

Material 5

Thickness 5

Material 6

Thickness 6

Material 7

Thickness 7

Material 8

Thickness 8

Thermal heat bridge (ground plate)

W/K

Window

Window renovation

Window type

G-value

U-value (window)

W/(m²K)

Thermal heat bridge (window)

W/K

Shading system renovated?

Shading variant
Solar glazing selected, shading is unnecessary.

Shading factor for movable sun protection elements

Air-Change Rate

Free ventilation

1/h

Infiltration

1/h

Space heating

System renovated?

Primary space heating system

Efficiency class primary heating system

Energy carrier

Resulting efficiency

Hot water generator

System renovated?

Primary technology

Efficiency class primary DHW system

Energy carrier

Resulting efficiency

Select if user specific DHW demand to be used

Specific useful energy demand

kWh/(m²a)

Solar system for DHW

Type of solar system

Installed area of solar collector

m²

Azimuth angle (0=South, 90=West, 180 = North, 270=East)

Inclination (0=horizontal, 90=vertical)

Country adjustment

Space cooling system

System renovated?

Primary space cooling system

Efficiency class primary AC system

Resulting efficiency (COP)

Ventilation

System renovated?

Type of ventilation (system)

Air change rate: ventilation system

1/h

Heat recovery rate

Photovoltaics

System renovated?

Capacity

kWp

Total module area

m²

Note: The PV module area is estimated at 5m² per 1 KWp, based on standard assumptions; actual values may vary by panel efficiency.

Azimuth angle (0=South, 90=West, 180 = North, 270=East)

Inclination (0=horizontal, 90=vertical)

Country adjustment

Lighting system

System renovated?

Type of lighting technology

Lighting sensors

Other operating parameters

Internal heat gains (people, appliances)

W/m²

Additional electricity consumption (without light, HVAC)
Best practice: Additional electricity consumption should not be considered for the EPC calculation

Additional electricity consumption (without light, HVAC)

kWh/a

Conditioned area (heating)

Conditioned area (cooling)

Set point temperature - heating

°C

Set point temperature - cooling

°C

Night setback

Yes/No

Heating

°C

Cooling

°C

Start

24h

End

24h

Manual Cost Input

Possibility to enter total cost for each system. This will overwrite the financial assumptions of the model. Tool still provides cost for each field that is left blank. Pls provide total cost, incl. System/materials, installation and taxes.

Wall insulation cost

€

Roof insulation cost

€

Floor insulation cost

€

Windows cost

€

Shading cost

€

Space heating system cost

€

Domestic hot water system cost

€

Solar domestic hot water system cost

€

Space cooling system cost

€

Mechanical ventilation system cost

€

Photovoltaic system cost

€

Lighting system cost

€

Manual Final Energy Input

Location

Electricity

kWh/(m²a)

Gas

kWh/(m²a)

LPG

kWh/(m²a)

Kerosene

kWh/(m²a)

Oil

kWh/(m²a)

Heating: kWh/(m²a)

Cooling: kWh/(m²a)

Other: kWh/(m²a)

Total: kWh/(m²a)

Performance:

Energy performance

The energy performance of your building project is compared with an average building of the same type in a comparable region. The rating depends on the CO2 equivalent emissions generated by the building’s energy consumption. The rating scale is:

Energy & Environment

Chart1Primary energy by energy use
Chart2Final energy by energy use
Chart3Final energy by energy carrier
Chart4Useful specific demand
Chart5Emissions

	kWh/(m²a)
	Current	Project1	Project2	Project3	Baseline	Delta
Space heating
DHW
Space cooling
Lighting
Auxiliary energy
Ventilation
Other electricity
Total
Total incl. PV

	kWh/(m²a)
	Current	Project1	Project2	Project3	Baseline	Delta
Space heating
DHW
Space cooling
Lighting
Auxiliary energy
Ventilation
Other electricity
PV
Total
Total incl. PV

	kWh/(m²a)
	Current	Project1	Project2	Project3	Baseline	Delta
Electricity
Gas
LPG
Oil
Biomass
Kerosene
Total

	kWh/(m²*a)
	Current	Project1	Project2	Project3	Baseline	Delta
Space heating
DHW
Space cooling
Total

	kgCO₂/(m²a)
	Current	Project1	Project2	Project3	Baseline	Delta
Space heating
DHW
Space cooling
Lighting
Auxiliary energy
Ventilation
Other electricity
Total
Total incl. PV

Financial - Global

Currency:

Disclaimer:The exchange rate is as of 15.07.2024

SpecificSpecific cost
TotalTotal cost
InvestmentSpecific investment cost


	Current	Project1	Project2	Project3	Baseline	Delta
Investment
Replacement
Residual
Energy
GHG
Inspection & maintenance
Cleaning
PV Feed in Tariff
Global cost (total)

	in thousand €
	Current	Project1	Project2	Project3	Baseline	Delta
Investment
Replacement
Residual
Energy
GHG
Inspection & maintenance
Cleaning
PV Feed in Tariff
Global cost (total)

	-
	Current	Project1	Project2	Project3	Baseline	Delta
Non-energy related construction cost
Energy related investment
Facade
Roof
Floor
Windows
Shading Elements
Heating System
DHW System
Solar DHW System
Cooling System
Ventilation System
Lighting
Photovoltaic
Total investment

Financial - CAPEX / OPEX

Operational Cost:

Investment Cost:

Payback Period: Years

	Current	Baseline	Delta
Heating system
DHW system
Cooling system
Lighting
PV system
Ventilation system
Shading system
Envelope
Energy cost

Financial Detailed Cost

CurrentCurrent
BaselineBaseline

	Type	Efficiency	Size	Cost
Heating system
DHW system
Solar DHW
Cooling system
Lighting
PV system
Ventilation system
Wall
Roof
Floor
Windows
Shading system
Total

	Type	Efficiency	Size	Cost
Heating system
DHW system
Solar DHW
Cooling system
Lighting
PV system
Ventilation system
Wall
Roof
Floor
Windows
Shading system
Total

Financial Legend

Global cost - A tool, suggested by the European Commission, to compare the economic effect of energy-related building measures over a given time period (20 years in this case).
Energy-related investment cost - The investment cost for insulation and systems.
Replacement - Additional investment cost if a system's lifetime is shorter than the considered time period.
Residual - If a system's lifetime has not ended with the considered time period, the residual value is considered as negative investment.
Energy - Cost for energy carrier over the time period.
I&M - Cost for inspection and maintenance of the systems.

version: 2.0.

Input parameters

General
Building type		-
Country		-
Region		-
Construction case		-

Building parameters

text will be provided

Building envelope
Areas
Net floor area		m²
Facade		m²
Roof		m²
Floor		m²
Windows		m²
A/V		-
Window fraction		%
U-Values
Facade		W/(m²*K)
Roof		W/(m²*K)
Floor		W/(m²*K)
Windows		W/(m²*K)
Window G-value		-
Thermal heat bridge (average)		W/K
Shading type		-

Building systems
Space heating (primary system)		-
DHW system		-
Solar thermal system (DHW) - type		-
Solar thermal system (DHW) - collector area		m²
Space cooling system		-
Space heating theoretical efficiency		%
Space heating annual COP (real efficiency)		%
DHW system theoretical efficiency		%
DHW annual COP (real efficiency)		%
Space cooling efficiency		-
Space cooling annual COP (real efficiency)		%
Ventialtion system		-
Heat recovery rate		1/h
Mechanical ventialtion rate		1/h
Free ventialtion & infiltration		1/h
Shading system		-
PV - installed capacity		kWp
Type of lighting		-

Occupant related
Internal heat gains		W/m²
Other household electricity		kWh/a
Conditioned area (heating)		%
Conditioned area (cooling)		%
Set point temperature heating		°C
Set point temperature cooling		°C
Night setback		Yes/No
Heating temperature		°C
Cooling temperature		°C
Start		24h
End		24h

Economic parameters

Prices
Gas price (start year)		€/kWh
Electricity price (start year)		€/kWh
Oil price (start year)		€/kWh
Kerosene price (start year)		€/kWh
LPG price (start year)		€/kWh
Gas price (end year)		€/kWh
Electricity price (end year)		€/kWh
Oil price (end year)		€/kWh
Kerosene price (end year)		€/kWh
LPG price (end year)		€/kWh
Average real annual gas price increase		%/a
Average real annual electricity price increase		%/a
Interest rate (real)		%/a
Calculation period		a
PV feed in tarif		€/kWh

Investment cost
Heating system		€
DHW system		€
DHW solar system		€
Cooling system		€
Ventilation		€
Lighting		€
Photovoltaics		€
Facade		€
Roof		€
Floor		€
Windows		€
Shading		€

Lifetimes
Heating system		a
DHW system		a
Cooling system		a
Ventilaton system		a
Photovoltaics		a
Insulation (exterior wall)		a
Insulation (roof)		a
Insulation (ground)		a
Window		a

Climate

Climate parameters
Average temperature		°C
Min. temperature		°C
Max. temperature		°C
Global radiation
North		kWh/(m²*a)
East		kWh/(m²*a)
South		kWh/(m²*a)
West		kWh/(m²*a)
Horizontal		kWh/(m²*a)

Additional factors

Primary energy factor
Gas		-
Electricity		-
Oil		-

Correction factor
Correction heating demand		%
Correction cooling demand		%

Results

Energy

Energy
Total useful specific demand		kWh/(m²*a)
Space heating		kWh/(m²*a)
DHW		kWh/(m²*a)
Space cooling		kWh/(m²*a)
Total final energy demand (incl. PV)		kWh/(m²*a)
Total final energy demand (without PV)		kWh/(m²*a)
Final energy per type
Total space heating (uncorrected)		kWh/(m²*a)
Total space heating (incl. correction)		kWh/(m²*a)
Total space heating (incl. conditioned area)		kWh/(m²*a)
Space heating		kWh/(m²*a)
DHW		kWh/(m²*a)
Space cooling		kWh/(m²*a)
Space cooling (incl. conditioned area + corr.)		kWh/(m²*a)
Lighting		kWh/(m²*a)
Auxiliary energy		kWh/(m²*a)
Ventilation		kWh/(m²*a)
Household electricity		kWh/(m²*a)
Final energy per energy carrier
Electricity		kWh/(m²*a)
Electricity (without PV)		kWh/(m²*a)
Gas		kWh/(m²*a)
LPG		kWh/(m²*a)
Oil		kWh/(m²*a)
Biomass		kWh/(m²*a)
Kerosene		kWh/(m²*a)
Total specific primary demand (incl. PV)		kWh/(m²*a)
Total specific primary demand (without PV)		kWh/(m²*a)
Space heating		kWh/(m²*a)
DHW		kWh/(m²*a)
Space cooling		kWh/(m²*a)
Lighting		kWh/(m²*a)
Auxiliary energy		kWh/(m²*a)
Ventilation		kWh/(m²*a)
Household electricity		kWh/(m²*a)
Renewable energy production
Solar hot water		kWh/(m²*a)
PV		kWh/(m²*a)
Solar thermal coverage rate of total DHW demand		%
Photovoltaics coverage rate of total electricity demand		%
Solar thermal: Used / produced		%
PV: Used / produced		%

Global costs

Global costs
Total global costs		€
Specific total global costs		€/m²
Thereof specific energy related Investment		€/m²
Thereof specific replacement of systems and elements		€/m²
Thereof specific residual value of investments		€/m²
Thereof specific energy cost		€/m²
Thereof specific I&M		€/m²
Thereof specific PV earnings (feed in)		€/m²

CO2 - emissions

CO₂ - emissions
Total CO₂-emissions		kg
Specific CO₂-emissions (incl. PV)		kg/m²
Specific CO₂-emissions (without PV)		kg/m²
Specific CO₂-emissions from space heating		kg/m²
Specific CO₂-emissions from DHW generation		kg/m²
Specific CO₂-emissions from space cooling		kg/m²
Specific CO₂-emissions from lighting		kg/m²
Specific CO₂-emissions from auxiliary systems		kg/m²
Specific CO₂-emissions from ventilation		kg/m²
Specific CO₂-emissions from household electricity		kg/m²

Banks

Specific Criteria

Click on a logo to see the criteria here
Building Performance		Additional Criteria
Emission compared to the baseline	A	Sustainable water use
Emission Reduction	-10%	The building will be privately owned
		Project is not funded by public

Building Characteristics

Emission compared to the baseline
Emission Reduction
Building Type
Construction Case

Additional Criteria

Tick the box of a criteria if your project fulfils it. They may have an influence on the eligibility of the project for improved financing. Further information on the specific criteria of each bank is available above: ‘Specific Criteria’.

Sustainable water use

Safe construction conditions

The building will be privately owned

Project is not funded by public

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Certificate

version: 2.0.

Projects

Project

Location

Building Type

System selection 1

Input Modes

Geometry-related parameters

Wall

Roof

Slab (ground plate)

Window

Air-Change Rate

Other operating parameters

Manual Cost Input

Manual Final Energy Input

Energy & Environment

Financial - Global

Financial - CAPEX / OPEX

Financial Detailed Cost

Input parameters

Results

Banks

Building Characteristics

Additional Criteria

Certificate

System selection ¹