Location, Dimensions and Occupancy

Project Name

Region
Altitude	m

Name	Area	Height	Volume
	m2	m	{{ floor.volume \| toFixed(1) }} m3
Add Floor

Total floor area	{{ data.TFA \| toFixed(1) }} m2
Total volume	{{ data.volume \| toFixed(1) }} m3

Floor area based occupancy	{{ data.sap_occupancy \| toFixed(2) }} people
Use custom occupancy
Custom occupancy	people

Fabric

Element type	Category	U-value	K	g⊥	gL	ff
{{ key }}
	Add Element Type

ID	Type	Length	Height	Area					U	W/K
		m	m	{{ element.netarea \| toFixed(1) }} m2		m			{{ element.uvalue }}	{{ element.wk \| toFixed(1) }} W/K
Add Element

Thermal Mass Parameter (TMP)

Use global TMP value (ignore the k value of individual elements)

Thermal Bridging

Total External Area	{{ data.fabric.total_external_area \| toFixed(2) }} m2
Thermal bridging heat loss factor (y) p76	W/m2.K
Thermal bridging heat loss	{{ data.fabric.thermal_bridging_heat_loss \| toFixed(2) }} W/K

Totals

Total fabric heat loss	{{ data.fabric.total_heat_loss_WK \| toFixed(2) }} W/K
Ventilation heat loss	{{ data.ventilation.average_WK \| toFixed(2) }} W/K
Total W/K heat loss	{{ data.totalWK \| toFixed(2) }} W/K
Total fabric thermal capacity	{{ data.fabric.total_thermal_capacity \| toFixed(2) }} kJ/K.m3
Annual solar gains	{{ data.fabric.annual_solar_gain \| toFixed(2) }} W ({{ data.fabric.annual_solar_gain_kwh \| toFixed(2) }} kWh)

Ventilation

Ventilation Type
Dwelling construction
Suspended wooden floor
Draught lobby
Percentage draught proofed	%
Structural infiltration	{{ data.ventilation.structural_infiltration \| toFixed(2) }} ACH
Number of sides sheltered	sides
Shelter factor:	{{ data.ventilation.shelter_factor \| toFixed(3) }}

Use air permeability test result
Air permeability value

System air change rate	AC/h
Balanced heat recovery efficiency	%
System specific fan power	W/m3

Intentional vents and flues

Name	Ventilation rate (p10, section 2)

Add ventilation point

Extract ventilation points

Name	Ventilation rate (p10, section 2)

Add ventilation point

Infiltration rate:	{{ data.ventilation.infiltration_rate \| toFixed(2) }} ACH
Infiltration rate incorporating shelter factor:	{{ data.ventilation.infiltration_rate_incorp_shelter_factor \| toFixed(2) }} ACH

Wind modified (ACH x wind speed / 4.0)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Wind speeds	{{ item \| toFixed(2) }} m/s
Effective air change rate	{{ item \| toFixed(2) }} ACH

Space heating

Target temperature	C
Living area	m2
Heating hours off weekday
Heating hours off weekend
Heating off during summer
Use utilisation factor for gains
Enter custom monthly internal temperature values:
Enter custom monthly external temperature values:

Monthly temperatures

	Jan	Feb
Living area	{{ item \| toFixed(1) }} °C	{{ data.annual_m_i_t_living_area \| toFixed(1) }} °C
Whole house	{{ item \| toFixed(1) }} °C	{{ data.annual_internal_temperature \| toFixed(1) }} °C
Whole house		{{ data.annual_internal_temperature \| toFixed(1) }} °C
Outside	{{ item \| toFixed(1) }} °C	{{ data.annual_external_temperature \| toFixed(1) }} °C
Outside		{{ data.annual_external_temperature \| toFixed(1) }} °C
Heat demand	{{ item \| toFixed(0) }} kWh	{{ data.space_heating.annual_heating_demand \| toFixed(0) }} kWh

Space heating energy requirement: {{ data.space_heating.annual_heating_demand | toFixed(0) }} kWh

Water Heating

Heating Systems

Heating system {{ index+1 }}

Efficiency, fraction & fuel
Name
Provides
Fraction of space heat provided (0-1)
Fraction of water heat provided (0-1)
Summer/water efficiency	%
Winter/space efficiency	%
Fuel

Temperature and Controls
Main space heating system
Responsiveness (0: low, 1: high, SAP:Table 4d)
Controls (1, 2 or 3, see: SAP:Table 4e)
Temperature Adjustment (SAP:Table 4e)	C

Instantaneous water heating
Warm air system

Other energy requirements & losses
Central heating pump (If not already included in efficiency)	kWh/year
Central heating pump inside
Warm air system specific fan power	W(litre/sec)
Fans and supply pumps (If not already included in efficiency)	kWh/year
Combi loss
Primary circuit loss

Add Heating System

Lighting, Appliances & Cooking

Calculation type:

Lighting

The total number of fixed lighting outlets (L)
The number of fixed low energy lighting outlets (LLE)
Reduced internal heat gains for lighting:
Annual energy use:	{{ data.energy_requirements.lighting.quantity \| toFixed(2) }} kWh/year

Lighting Fuel	Fraction	Fuel input
		{{ item.fuel_input \| toFixed(2) }} kWh/year

Appliances

Energy efficient appliances and reduced internal heat gains:
Annual energy use:	{{ data.energy_requirements.appliances.quantity \| toFixed(2) }} kWh/year

Appliances Fuel	Fraction	Fuel input
		{{ item.fuel_input \| toFixed(2) }} kWh/year

Cooking

Reduced internal heat gains for cooking:
Annual energy use:	{{ data.energy_requirements.cooking.quantity \| toFixed(2) }} kWh/year

Cooking Fuels	Fraction	Fuel input
		{{ item.fuel_input \| toFixed(2) }} kWh/year

Category	Name	Power	Hours	kWh/d	kWh/y	Fuel	Efficiency
		W	hrs	kWh	kWh
Add item

Solar hot water

Solar energy available	{{ data.SHW.solar_energy_available \| toFixed(0) }} kWh
Aperture area of solar collector, m2
Zero-loss collector efficiency, η0, from test certificate or Table H1
Collector linear heat loss coefficient, a1, from test certificate
Collector 2nd order heat loss coefficient, a2, from test certificate
Collector Orientation
Collector Inclination (degrees i.e 35 degrees)
Annual solar radiation per m2 from U3.3 in Appendix U for the orientation and tilt of the collector	{{ data.SHW.annual_solar \| toFixed(0) }} kWh
Overshading
Solar water heating pump

Monthly solar energy available

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Monthly output	{{ item \| toFixed(0) }} kWh

Note: The overall performance of solar water systems depends on how the hot water system is used, e.g. daily draw-off patterns and the use of other water heating devices such as a boiler or an immersion. The procedure described here is not suitable for detailed design in a particular case. It is intended to give a representative value of the solar contribution to domestic water heating over a range of users.

Utilised annual solar input	{{ data.SHW.Qs \| toFixed(0) }} kWh
Dedicated solar storage volume, Vs, (litres)	L
If combined cylinder, total volume of cylinder (litres)	L

Onsite Generation

Use Solar PV calculator
kWp installed	kW
Orientation
Inclination	degrees
Overshading

	Annual Generation	Fraction used on-site	Feed in tariff Generation (£/kWh)	Feed in tariff Export (£/kWh)
Solar PV	{{ data.generation.solar_annual_kwh \| toFixed(0) }}
Wind
Hydro

Energy requirements and fuel summary

{{ item.name }}
Supplied by:	Fraction	Demand: {{ item.quantity \| toFixed(2) }} kWh/year	Fuel input: {{ data.fuel_requirements[index].quantity \| toFixed(2) }} kWh/year
{{ f.fuel }}	{{ f.fraction \| toFixed(2) }}	{{ f.demand \| toFixed(2) }} kWh/year	{{ f.fuel_input \| toFixed(2) }} kWh/year

Fuel summary and costs

Fuel type	Fuel quantity	CO2 factor kgCO2/kWh	Annual CO2	Primary Energy Factor	Primary Energy	Unit cost	Annual standing charge	Annual cost
{{ index }}	{{ data.fuel_totals[index].quantity \| toFixed(2) }} kWh		{{ data.fuel_totals[index].annualco2 \| toFixed(2) }} kg		{{ data.fuel_totals[index].primaryenergy \| toFixed(2) }} kWh	p/kWh	£/year	£{{ data.fuel_totals[index].annualcost \| toFixed(2) }}
	Add Fuel

Total energy cost:	£{{ data.total_cost \| toFixed(2) }} ({{ data.SAP.rating \| toFixed(1) }})
Total energy income (FIT's):	£{{ data.total_income \| toFixed(2) }}
Net cost:	£{{ data.net_cost \| toFixed(2) }}

Override annual energy content
Annual energy content	kWh {{ data.water_heating.annual_energy_content \| toFixed(1) }} kWh
Low water use design

Storage volume	L
Hot water control type
Pipework insulation
Storage loss factor known
Manufacturer loss factor (kWh/day)	kWh/d
Temperature factor A (Table 2b, p139)
Loss factor (kWh/litre/day, Table 2, p138)
Volume factor (Table 2a, p138)
Temperature factor (Table 2b, p139)
Contains dedicated solar storage or WWHRSs
Solar water heating
Hot water store in dwelling
Community heating

{{ item.name }}
Supplied by:	Fraction	Demand: {{ item.quantity \| toFixed(2) }} kWh/year	Fuel input: {{ data.fuel_requirements[index].quantity \| toFixed(2) }} kWh/year
{{ f.fuel }}	{{ f.fraction \| toFixed(2) }}	{{ f.demand \| toFixed(2) }} kWh/year	{{ f.fuel_input \| toFixed(2) }} kWh/year