30kW_kingspan
 

 

Cost of 20kW Solar PV installation, £28,500 ex VAT, energy produced by 20kW system 16,860kWh, income from Feed In Tariff £8,430 per year, payback period 7.3 years, ROI 12.5%

20kW solar pv installation costs - also for 10kW - 150kW Solar PV Installations

Price indications:

Medium sized solar installations 10- 150kW

Below charts are indicative prices and returns for projects based on 50% of power used on site and 50% sold back to the grid

 

Solar Returns - Roof Mount

 

PV size in kW
10kW
20kW
30kW
50kW
150kW
Feed in tariff per kWh
13.99p
13.03p
13.03p
13.03p
11.5p
Area (roof / ground)
67m2
140m2
208m2
340m2
1042m2
Price (ex VAT)
£15,250
£28,500
£38,900
£59,200
£155,000
Annual output in kWh
8,430
16,860
25,290
42,160
126,480
50% used on site
4,215
8,430
12,645
21,080
63,240
Feed in tariff income - 100% (retail price index linked)
£1,179
£2,196
£3,295
£5,493
£14,545
Saving from own use @ 12p/kWh on 50%
£505
£1,011
£1,518
£2,529

£7,588

Export tariff to grid (income) @ 4.5p/kWh on 50%
£189
£379
£569
£948
£2,845
Total annual financial benefit
£1,873
£3,586
£5,382
£8,970
£24,978
Annual % return
12.2%
12.5%
13.8%
15.1%
16.1%
Total life generation - 20 Years
£37,460
£71,720
£107,640
£179,400
£499,560
Pay back in years
8.1
7.9
7.2
6.5
6.2
Projected total income allowing for 3% inflation & 0.7% p.a panel degradation
£61,884
£118,426
£177,639
£296,135
£824,531
Payback in years

7.5

7.3
7.1
6.2
5.9

 

 

30kW_solar_pv   30kW_soolar_PV_kingspan_roof

 

Solar Returns - Ground Mount

 

PV size in kW
10kW
20kW
30kW
50kW
150kW
Feed in tariff per kWh
13.9P
13.03P
13.03P
13.03P
11.5P
Area
67m2
290m2
705m2
1,000m2
1042m2
Price (ex VAT) £18,000
£30,000
£40,250
£60,000
£160,000
Annual output in kWp
8,430
16,860
25,290
42,160
126,480
50% used on site
4,215
8,430
12,645
21,080
63,240
Feed in tariff income - 100% (retail price index linked)
£1,179
£2,196
£3,295
£5,493
£14,545
Saving from own use @ 12p/kWh on 50%
£505
£1,011
£1,518
£2,529
£7,588
Export tariff to grid (income) @ 4.5p/kWh on 50%
£189
£379
£569
£948.00
£2,845
Total annual financial benefit
£1,873
£3,586
£5,382
£8,970
£24,978
Annual % return
10
11.9
13.3
14.9
15.6
Total life generation - 20 Years
£37,460
£71,720
£107,640
£179,400
£499,560
Pay back in years
9.6
8.3
7.4
6.6
6.4
Projected total income allowing for 3% inflation & 0.7% p.a panel degradation
£61,884
£118,426
£177,639
£296,135
£824,531
Payback in years
9.8
8.1
7.9
7.3
6

 

 

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Tel: 01502 515532
8/9 Battery Green Road, Lowestoft, Suffolk, NR32 1DE