Terra Nostra : Our Earth

Energy Savings 2010

Geo Thermal Heat Pump (linked into solar thermal and solar photovoltaic)

 

Jan

Feb

Mar

Apr

May

Jun

Electricity Used KWh

8849.0

7936.00

9093.00

6649.00

2270.00

36.00

Heat Output KWh

28749.2

26159.20

28185.00

21121.90

8372.20

152.10

Energy Gained KWh

19900.2

18223.20

19092.00

14472.90

6102.20

116.1

Cost Saving

£1622.07

£1485.37

£1556.19

£1179.69

£497.39

£9.46

Carbon Saving Kg

8557.09

7835.98

8209.50

6223.35

2623.95

49.92

 

Jul

Aug

Sep

Oct

Nov

Dec

Electricity Used KWh

69.00

 

 

 

 

 

Heat Output KWh

257.90

 

 

 

 

 

Energy Gained KWh

188.9

 

 

 

 

 

Cost Saving

£15.40

 

 

 

 

 

Carbon Saving Kg

81.23

 

 

 

 

 


Please note our heat pump was turned off at the end of May.

 

Solar Thermal Panels (linked to heat pump)

 

Jan

Feb

Mar

Apr

May

Jun

Hours of Sun (>200 w/m2)

22.5

72.5

185.0

244.5

305.5

226.0

Heat Output KWh

37.75

121

370

1732.89

1227.00

463.00

Energy Gained KWh

34.39

117.64

365.8

688.64

1223.64

458.80

Cost Saving

£2.80

£9.58

£29.82

£56.13

£99.74

£37.40

Carbon Saving Kg

14.79

50.59

157.29

296.12

526.17

197.28

 

Jul

Aug

Sep

Oct

Nov

Dec

Hours of Sun (>200 w/m2)

221.5

 

 

 

 

 

Heat Output KWh

35.00

 

 

 

 

 

Energy Gained KWh

31.64

 

 

 

 

 

Cost Saving

£2.58

 

 

 

 

 

Carbon Saving Kg

13.61

 

 

 

 

 

 

Solar Photovoltaic

 

Jan

Feb

Mar

Apr

May

Jun

Hours of Sun (>200 w/m2)

22.5

72.5

185.0

244.5

305.5

226.0

Electricity Generated KWh

40.35

72.33

168.20

243.39

251.31

280.18

Cost Saving

£3.29

£5.90

£13.71

£19.84

£20.48

£22.84

Carbon Saving Kg

17.35

31.10

72.33

104.66

108.06

120.48

 

Jul

Aug

Sep

Oct

Nov

Dec

Hours of Sun (>200 w/m2)

221.5

 

 

 

 

 

Electricity Generated KWh

350.62

 

 

 

 

 

Cost Saving

£28.58

 

 

 

 

 

Carbon Saving Kg

150.77

 

 

 

 

 

 

Water Generation

 

Jan

Feb

Mar

Apr

May

Jun

RAINWATER

 

 

 

 

 

Roof area m2

130

130

130

130

130

130

Rainfall

4.2

2

17.2

1.0

0.2

0.3

Rainfall recovered mm

546

260

2236

130

26

39

WELL

 

 

 

 

 

 

Water collected (litres)

8854

9120

11164

23500

32564

43751

Used for Garden

4712.5

4500

7150

20170

27510

38540

Used for sanitation

4687.5

4880

6250

3460

5080

5250

Total water saving

8854.0

9120

11164

23500

32564

43751

Cost saving

£26.56

£27.36

£33.49

£70.50

£97.69

£131.25

 

Jul

Aug

Sep

Oct

Nov

Dec

RAINWATER

 

 

 

 

 

Roof area m2

130

 

 

 

 

Rainfall

4.2

 

 

 

 

 

Rainfall recovered mm

546

 

 

 

 

 

WELL

 

 

 

 

 

 

Water collected (litres)

31704

 

 

 

 

 

Used for Garden

2625.42

 

 

 

 

 

Used for sanitation

0

 

 

 

 

 

Total water saving

31704

 

 

 

 

 

Cost saving

£95.00

 

 

 

 

Due to increased demand during July for water the rainwater recovery was switched from sanitation use to the garden.

Carbon Saving

 

Jan

Feb

Mar

Apr

May

Jun

On site carbon emmissions Kg
202.21

169.29

23.56

5.89

13.3

71,44

Off site carbon emmisions Kg

6548.28

6124.10

1554.76

5287.03

3101.53

2228.27

Total emmisions Kg

6750.48

6293.39

1578.32

5292.92

3114.83

2299.71

Saving on previous year

-6.04%

-9.45%

16.45%

14.09%

51.07%

62.67%

 

Jul

Aug

Sep

Oct

Nov

Dec

On site carbon emmissions Kg
19.95

 

 

 

 

 

Off site carbon emmisions Kg

2625.42

 

 

 

 

 

Total emmisions Kg

2645.37

 

 

 

 

 

Saving on previous year

58.45%