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The Energy Centre - Energy savings breakdown

Features

Greenstore ground source heat pump
Greenskies solar panels
Greensource Air to Air heat pump
Greenstar condensing A rated oil boiler

Energy savings

Oct 09

Cost of using Ground Source Heat Pumps: £71
Cost of using Electric heater: £104

Nov 09

Cost of using Ground Source Heat Pumps: £93
Cost of using Electric heater: £141

Dec 09

Cost of using Ground Source Heat Pumps: £140
Cost of using Electric heater: £177

Jan 10

Cost of using Ground Source Heat Pumps: £191
Cost of using Electric heater: £213

Feb 10

Cost of using Ground Source Heat Pumps: £164
Cost of using Electric heater: £208

Mar 10

Cost of using Ground Source Heat Pumps: £90
Cost of using Electric heater: £131

Apr 10

Cost of using Ground Source Heat Pumps: £67
Cost of using Electric heater: £105

May 10

Cost of using Ground Source Heat Pumps: £37
Cost of using Electric heater: £60

Jun 10

Cost of using Ground Source Heat Pumps: £40
Cost of using Electric heater: £64

Jul 10

Cost of using Ground Source Heat Pumps: £40
Cost of using Electric heater: £63

Aug 10

Cost of using Ground Source Heat Pumps: £
Cost of using Electric heater: £

Sep 10

Cost of using Ground Source Heat Pumps: £
Cost of using Electric heater: £

Key

Grey block: Cost of using Electric heater
Green block: Cost of using Ground Source Heat Pumps

This graph represents the property's energy saving on a rolling 12 month period.

We have measured the ground source heat pump electricity consumption and the energy it produces to heat the home then we have calculated costs to run the heat pump and the equivalent cost to heat the home using conventional electric heating.

Figures based on the energy supplier charging a rate of 12.9p/kWh

Annual fuel saving We have measured the ground source heat pump electricity consumption and the energy it produces to heat this home. To illustrate the annual fuel savings these bars represent both the comparison of the ground source heat pump running costs to the equivalent costs for heating the home with either conventional electric heating or G rated oil boiler. Figures based on the energy supplier charging oil at a rate of 4.5p/kWh and electricity at a rate of 12.9p/kWh	Conventional electric heating	G-rated oil boiler
Year to date starting October 2009 Electric heater £2505 Ground source heat pump £933 62% saving	Year to date starting October 2009 G-rated boiler £1266 Ground source heat pump £933 26% saving
Annual carbon saving The carbon emissions of the boilers are directly related to their efficiency and the amount of energy each appliance uses. Figures based on oil producing carbon at a rate of 246g/kWh and electricity producing carbon at a rate of 537g/kWh.	Year to date starting October 2009 Electric heater 10426 Kg of CO₂ Heat pump 3885 Kg of CO₂ 62% reduction	Year to date starting October 2009 G-rated boiler 6922 Kg of CO₂ Heat pump 3885 Kg of CO₂ 43% reduction

Annual fuel saving

We have measured the ground source heat pump electricity consumption and the energy it produces to heat this home.

To illustrate the annual fuel savings these bars represent both the comparison of the ground source heat pump running costs to the equivalent costs for heating the home with either conventional electric heating or G rated oil boiler.

Figures based on the energy supplier charging oil at a rate of 4.5p/kWh and electricity at a rate of 12.9p/kWh

Conventional electric heating

G-rated oil boiler

Year to date starting October 2009

Electric heater: £2505
Ground source heat pump: £933; 62% saving

Year to date starting October 2009

G-rated boiler: £1266
Ground source heat pump: £933; 26% saving

Annual carbon saving

The carbon emissions of the boilers are directly related to their efficiency and the amount of energy each appliance uses.

Figures based on oil producing carbon at a rate of 246g/kWh and electricity producing carbon at a rate of 537g/kWh.

Year to date starting October 2009

Electric heater: 10426 Kg of CO₂
Heat pump: 3885 Kg of CO₂; 62% reduction

Year to date starting October 2009

G-rated boiler: 6922 Kg of CO₂
Heat pump: 3885 Kg of CO₂; 43% reduction

SAP ratings The energy efficiency rating is a measure of the overall efficiency of a home. The higher the rating ('A' being the highest) the more energy efficient the home is and the lower the fuel bills are likely to be. The environmental impact rating is a measure of a home's impact on the environment in terms of carbon dioxide (CO2) emissions. The higher the rating ('A' being the highest) the less impact it has on the environment.	SAP energy efficiency rating	SAP environmental impact rating
Before improvements Efficiency grading F Efficiency rating band (21-38) Efficiency rating 38 After improvements Efficiency grading E Efficiency rating band (39-54) Efficiency rating 54 More on Energy Performance Certificates	Before improvements Efficiency grading F Efficiency rating band (21-38) Efficiency rating 35 After improvements Efficiency grading C Efficiency rating band (69-80) Efficiency rating 70

SAP ratings

The energy efficiency rating is a measure of the overall efficiency of a home. The higher the rating ('A' being the highest) the more energy efficient the home is and the lower the fuel bills are likely to be.

The environmental impact rating is a measure of a home's impact on the environment in terms of carbon dioxide (CO2) emissions. The higher the rating ('A' being the highest) the less impact it has on the environment.

SAP energy efficiency rating

SAP environmental impact rating

Before improvements

Efficiency grading: F
Efficiency rating band: (21-38)

Efficiency rating: 38

After improvements

Efficiency grading: E
Efficiency rating band: (39-54)

Efficiency rating: 54

Before improvements

Efficiency grading: F
Efficiency rating band: (21-38)

Efficiency rating: 35

After improvements

Efficiency grading: C
Efficiency rating band: (69-80)

Efficiency rating: 70