Solar panel cost in Rotherham (S25)

See realistic solar installation costs, savings and payback for S25 (Rotherham) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

Solar Calculator

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System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
10.6 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£766
What you save every year
Profit Over 25 Years
£11,019
After paying itself off, you're this much ahead

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How we calculate this

Solar generation: Based on typical south-facing roof at 35° angle. We account for weather, dirt, and system losses (14%).

How much you'll use directly:

  • Without battery: You'll use about 40% of what you generate. The rest gets sold back to the grid.
  • With 5 kWh battery: You'll use about 70% (battery stores extra for evening use).
  • With 10 kWh battery: You'll use about 75% (more storage means less exported).
  • Panel-only payback: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • Battery & payback: Batteries raise self-use and cut bills, but added hardware cost often lengthens break-even at typical UK rates.
  • When a battery can still make sense:
    • Evening-heavy usage patterns
    • Time-of-use tariffs / cheap night rates
    • Low export rate vs. high unit rate
    • Heat pump or EV charging synergy
    • Optional backup/resilience (system-dependent)
    • Lower evening-hour CO₂ vs. grid

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £700 per kWh. Export tariffs vary by supplier (usually 5–15p per kWh).

Grid connection: Systems up to about 3.7 kW typically need just a notification (G98). Larger systems may need permission (G99).

These are typical values based on average usage patterns. Your actual results will vary based on your roof, shading, and how you use electricity.

Your area in context

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 951 kWh per year on a south-facing roof. We value self-used electricity at 25.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.3p/kWh
Standing charge
64.4p/day
Sunshine yield (south)
951 kWh/kW
Export price (baseline)
10p/kWh

Browse the scenarios below. Each battery size has its own expand — open the one that matches your plan (or just explore). For each system size (2–8 kW) we show annual output, how much you use directly, what gets exported, annual benefit, upfront cost, break-even, and a 20-year net. Negative numbers are possible — that’s the honest trade-off when adding more battery than your usage profile justifies.

No battery 5 kW example → Annual benefit: £766, Upfront: £8,139, Break-even: 10.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 760 kWh 1141 kWh £192 £114 £307 £3,256 10.6 yrs £2,875
3 kW 2852 kWh 1141 kWh 1711 kWh £289 £171 £460 £4,883 10.6 yrs £4,313
4 kW 3802 kWh 1521 kWh 2281 kWh £385 £228 £613 £6,511 10.6 yrs £5,750
5 kW 4753 kWh 1901 kWh 2852 kWh £481 £285 £766 £8,139 10.6 yrs £7,188
6 kW 5703 kWh 2281 kWh 3422 kWh £577 £342 £920 £9,767 10.6 yrs £8,625
7 kW 6654 kWh 2662 kWh 3992 kWh £674 £399 £1,073 £11,394 10.6 yrs £10,063
8 kW 7604 kWh 3042 kWh 4563 kWh £770 £456 £1,226 £13,022 10.6 yrs £11,500

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £912, Upfront: £10,239, Break-even: 11.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 1141 kWh 760 kWh £289 £76 £365 £5,356 14.7 yrs £1,939
3 kW 2852 kWh 1711 kWh 1141 kWh £433 £114 £547 £6,983 12.8 yrs £3,959
4 kW 3802 kWh 2281 kWh 1521 kWh £577 £152 £729 £8,611 11.8 yrs £5,979
5 kW 4753 kWh 2852 kWh 1901 kWh £722 £190 £912 £10,239 11.2 yrs £7,998
6 kW 5703 kWh 3422 kWh 2281 kWh £866 £228 £1,094 £11,867 10.8 yrs £10,018
7 kW 6654 kWh 3992 kWh 2662 kWh £1,010 £266 £1,277 £13,494 10.6 yrs £12,038
8 kW 7604 kWh 4563 kWh 3042 kWh £1,155 £304 £1,459 £15,122 10.4 yrs £14,057

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £985, Upfront: £11,639, Break-even: 11.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 1331 kWh 570 kWh £337 £57 £394 £6,756 17.2 yrs £1,121
3 kW 2852 kWh 1996 kWh 855 kWh £505 £86 £591 £8,383 14.2 yrs £3,432
4 kW 3802 kWh 2662 kWh 1141 kWh £674 £114 £788 £10,011 12.7 yrs £5,743
5 kW 4753 kWh 3327 kWh 1426 kWh £842 £143 £985 £11,639 11.8 yrs £8,054
6 kW 5703 kWh 3992 kWh 1711 kWh £1,010 £171 £1,182 £13,267 11.2 yrs £10,364
7 kW 6654 kWh 4658 kWh 1996 kWh £1,179 £200 £1,378 £14,894 10.8 yrs £12,675
8 kW 7604 kWh 5323 kWh 2281 kWh £1,347 £228 £1,575 £16,522 10.5 yrs £14,986

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,006, Upfront: £13,389, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 1388 kWh 513 kWh £351 £51 £403 £8,506 21.1 yrs £-454
3 kW 2852 kWh 2082 kWh 770 kWh £527 £77 £604 £10,133 16.8 yrs £1,944
4 kW 3802 kWh 2776 kWh 1027 kWh £702 £103 £805 £11,761 14.6 yrs £4,342
5 kW 4753 kWh 3469 kWh 1283 kWh £878 £128 £1,006 £13,389 13.3 yrs £6,740
6 kW 5703 kWh 4163 kWh 1540 kWh £1,054 £154 £1,208 £15,017 12.4 yrs £9,138
7 kW 6654 kWh 4857 kWh 1797 kWh £1,229 £180 £1,409 £16,644 11.8 yrs £11,536
8 kW 7604 kWh 5551 kWh 2053 kWh £1,405 £205 £1,610 £18,272 11.3 yrs £13,934

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,021, Upfront: £15,139, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 1426 kWh 475 kWh £361 £48 £408 £10,256 25.1 yrs £-2,088
3 kW 2852 kWh 2139 kWh 713 kWh £541 £71 £613 £11,883 19.4 yrs £369
4 kW 3802 kWh 2852 kWh 951 kWh £722 £95 £817 £13,511 16.5 yrs £2,825
5 kW 4753 kWh 3565 kWh 1188 kWh £902 £119 £1,021 £15,139 14.8 yrs £5,281
6 kW 5703 kWh 4277 kWh 1426 kWh £1,083 £143 £1,225 £16,767 13.7 yrs £7,737
7 kW 6654 kWh 4990 kWh 1663 kWh £1,263 £166 £1,429 £18,394 12.9 yrs £10,194
8 kW 7604 kWh 5703 kWh 1901 kWh £1,443 £190 £1,634 £20,022 12.3 yrs £12,650

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,036, Upfront: £17,589, Break-even: 17.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1901 kWh 1464 kWh 437 kWh £370 £44 £414 £12,706 30.7 yrs £-4,421
3 kW 2852 kWh 2196 kWh 656 kWh £556 £66 £621 £14,333 23.1 yrs £-1,907
4 kW 3802 kWh 2928 kWh 874 kWh £741 £87 £828 £15,961 19.3 yrs £608
5 kW 4753 kWh 3660 kWh 1093 kWh £926 £109 £1,036 £17,589 17.0 yrs £3,122
6 kW 5703 kWh 4391 kWh 1312 kWh £1,111 £131 £1,243 £19,217 15.5 yrs £5,637
7 kW 6654 kWh 5123 kWh 1530 kWh £1,297 £153 £1,450 £20,844 14.4 yrs £8,151
8 kW 7604 kWh 5855 kWh 1749 kWh £1,482 £175 £1,657 £22,472 13.6 yrs £10,666

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

Figures are illustrative and use the same method as the calculator above. For exact results, adjust your roof direction, tariff, and usage in the calculator.

Before you request quotes in Rotherham

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Seasonal solar output in S25

Monthly generation per kilowatt of solar panels

kWh 35 Jan 51 Feb 83 Mar 106 Apr 118 May 112 Jun 115 Jul 107 Aug 88 Sep 61 Oct 42 Nov 33 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.2% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 40 kWh per month; the average month produces around 79 kWh. So a typical 4 kW home system would generate roughly 159 kWh in winter, or 317 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.31p/kWh
Daily Fixed Charge
64.38p/day
Local Sunshine
951kWh/kW
A 1 kW system generates ~951 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 75% • Flats: 8% • Bungalows: 17% Based on 5,596 properties

Coverage

Rotherham (98%)|Doncaster (2%)

Areas Covered

Dinnington, Anston & Woodsetts, Conisbrough, Thurcroft & Wickersley South

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

Property data: EPC open data (Open Government Licence), aggregated

All estimates are typical values. Actual results vary based on your specific situation, roof characteristics, and usage patterns.