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Solar panel cost in North East Derbyshire (S21)

See realistic solar installation costs, savings and payback for S21 (North East Derbyshire) 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

Change the settings below to see how costs and savings work for your situation.

System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
14.4 years
After this, it's pure profit
Upfront Cost
£8,138
What you pay to get started
Annual Benefit
£565
What you save every year
Profit Over 25 Years
£5,979
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: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • 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

Costs: Battery prices are typically £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

In East Midlands, the current unit rate is 22.20p/kWh with a 53.05p/day standing charge. Your postcode’s south-facing sunshine yield is 949 kWh/kW — 19 below the regional median (968).

Read the full story

A typical roof here lands around 4.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 949 kWh per year on a south-facing roof. We value self-used electricity at 22.2p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
22.2p/kWh
Standing charge
53.0p/day
Sunshine yield (south)
949 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: £706, Upfront: £10,173, Break-even: 14.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 759 kWh 1138 kWh £168 £114 £282 £4,069 14.4 yrs £1,578
3 kW 2846 kWh 1138 kWh 1708 kWh £253 £171 £424 £6,104 14.4 yrs £2,367
4 kW 3795 kWh 1518 kWh 2277 kWh £337 £228 £565 £8,138 14.4 yrs £3,156
5 kW 4744 kWh 1898 kWh 2846 kWh £421 £285 £706 £10,173 14.4 yrs £3,945
6 kW 5692 kWh 2277 kWh 3416 kWh £505 £342 £847 £12,207 14.4 yrs £4,734
7 kW 6641 kWh 2656 kWh 3985 kWh £590 £398 £988 £14,242 14.4 yrs £5,523
8 kW 7590 kWh 3036 kWh 4554 kWh £674 £455 £1,129 £16,276 14.4 yrs £6,312

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £822, Upfront: £12,273, Break-even: 14.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 1138 kWh 759 kWh £253 £76 £329 £6,169 18.8 yrs £404
3 kW 2846 kWh 1708 kWh 1138 kWh £379 £114 £493 £8,204 16.6 yrs £1,656
4 kW 3795 kWh 2277 kWh 1518 kWh £505 £152 £657 £10,238 15.6 yrs £2,908
5 kW 4744 kWh 2846 kWh 1898 kWh £632 £190 £822 £12,273 14.9 yrs £4,160
6 kW 5692 kWh 3416 kWh 2277 kWh £758 £228 £986 £14,307 14.5 yrs £5,412
7 kW 6641 kWh 3985 kWh 2656 kWh £885 £266 £1,150 £16,342 14.2 yrs £6,664
8 kW 7590 kWh 4554 kWh 3036 kWh £1,011 £304 £1,315 £18,376 14.0 yrs £7,916

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £879, Upfront: £13,673, Break-even: 15.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 1328 kWh 569 kWh £295 £57 £352 £7,569 21.5 yrs £-533
3 kW 2846 kWh 1992 kWh 854 kWh £442 £85 £528 £9,604 18.2 yrs £950
4 kW 3795 kWh 2656 kWh 1138 kWh £590 £114 £704 £11,638 16.5 yrs £2,434
5 kW 4744 kWh 3321 kWh 1423 kWh £737 £142 £879 £13,673 15.5 yrs £3,917
6 kW 5692 kWh 3985 kWh 1708 kWh £885 £171 £1,055 £15,707 14.9 yrs £5,401
7 kW 6641 kWh 4649 kWh 1992 kWh £1,032 £199 £1,231 £17,742 14.4 yrs £6,884
8 kW 7590 kWh 5313 kWh 2277 kWh £1,179 £228 £1,407 £19,776 14.1 yrs £8,368

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £897, Upfront: £15,423, Break-even: 17.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 1385 kWh 512 kWh £308 £51 £359 £9,319 26.0 yrs £-2,144
3 kW 2846 kWh 2078 kWh 768 kWh £461 £77 £538 £11,354 21.1 yrs £-591
4 kW 3795 kWh 2770 kWh 1025 kWh £615 £102 £717 £13,388 18.7 yrs £962
5 kW 4744 kWh 3463 kWh 1281 kWh £769 £128 £897 £15,423 17.2 yrs £2,515
6 kW 5692 kWh 4156 kWh 1537 kWh £923 £154 £1,076 £17,457 16.2 yrs £4,067
7 kW 6641 kWh 4848 kWh 1793 kWh £1,076 £179 £1,256 £19,492 15.5 yrs £5,620
8 kW 7590 kWh 5541 kWh 2049 kWh £1,230 £205 £1,435 £21,526 15.0 yrs £7,173

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £908, Upfront: £17,173, Break-even: 18.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 1423 kWh 474 kWh £316 £47 £363 £11,069 30.5 yrs £-3,802
3 kW 2846 kWh 2135 kWh 712 kWh £474 £71 £545 £13,104 24.0 yrs £-2,202
4 kW 3795 kWh 2846 kWh 949 kWh £632 £95 £727 £15,138 20.8 yrs £-603
5 kW 4744 kWh 3558 kWh 1186 kWh £790 £119 £908 £17,173 18.9 yrs £996
6 kW 5692 kWh 4269 kWh 1423 kWh £948 £142 £1,090 £19,207 17.6 yrs £2,595
7 kW 6641 kWh 4981 kWh 1660 kWh £1,106 £166 £1,272 £21,242 16.7 yrs £4,194
8 kW 7590 kWh 5692 kWh 1898 kWh £1,264 £190 £1,453 £23,276 16.0 yrs £5,794

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £920, Upfront: £19,623, Break-even: 21.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1898 kWh 1461 kWh 436 kWh £324 £44 £368 £13,519 36.7 yrs £-6,159
3 kW 2846 kWh 2192 kWh 655 kWh £487 £65 £552 £15,554 28.2 yrs £-4,513
4 kW 3795 kWh 2922 kWh 873 kWh £649 £87 £736 £17,588 23.9 yrs £-2,868
5 kW 4744 kWh 3653 kWh 1091 kWh £811 £109 £920 £19,623 21.3 yrs £-1,222
6 kW 5692 kWh 4383 kWh 1309 kWh £973 £131 £1,104 £21,657 19.6 yrs £423
7 kW 6641 kWh 5114 kWh 1527 kWh £1,135 £153 £1,288 £23,692 18.4 yrs £2,069
8 kW 7590 kWh 5844 kWh 1746 kWh £1,297 £175 £1,472 £25,726 17.5 yrs £3,714

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, 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.

Insights for S21

Figures below are tailored to S21 — click through for full league tables.

Big-Roof Britain Rank #1159 of 2182
4.9 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1830 of 2997
12.8 years (UK avg 12.6 years)
~£636 /yr • £8,138 upfront
Standing-Charge Drag Rank #2311 of 2997
28.8% (UK avg 24.6%) drag on savings
£183 fixed • ~£636 /yr value
Aspect Penalty View ranking →
East −21.5% West −20.4%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in S21

Monthly generation per kilowatt of solar panels

kWh 35 Jan 50 Feb 83 Mar 107 Apr 118 May 112 Jun 116 Jul 108 Aug 88 Sep 61 Oct 41 Nov 31 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 48.9% 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 39 kWh per month; the average month produces around 79 kWh. So a typical 4 kW home system would generate roughly 155 kWh in winter, or 316 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
22.20p/kWh
Daily Fixed Charge
53.05p/day
Local Sunshine
949kWh/kW
A 1 kW system generates ~949 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
4.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 76% • Flats: 8% • Bungalows: 16% Based on 5,585 properties

Coverage

North East Derbyshire (93%)|Sheffield (5%)|Bolsover (1%)

Areas Covered

Eckington South & Renishaw, Killamarsh West, Eckington North, Killamarsh East, Mosborough, Ridgeway & Marsh Lane, Barlborough, Unstone + 1 more

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q1 2026

Installation costs: MCS certified installer data, March 2025

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.

Compare nearby areas

Nearby in East Midlands

S43 (Chesterfield)
≈4.8 km away
Local sunshine: ~935 kWh/kWp · -1% vs S21
S44 (Bolsover)
≈9.5 km away
Local sunshine: ~935 kWh/kWp · -1% vs S21
S41 (Chesterfield)
≈9.7 km away
Local sunshine: ~935 kWh/kWp · -1% vs S21
S49 (Chesterfield)
≈11.1 km away
Local sunshine: ~933 kWh/kWp · -2% vs S21
S40 (Chesterfield)
≈11.2 km away
Local sunshine: ~933 kWh/kWp · -2% vs S21
S80 (Bassetlaw)
≈13.6 km away
Local sunshine: ~955 kWh/kWp · +1% vs S21

Similar sunshine across the UK

CA27 (Cumberland)
~949 kWh/kWp · +0% vs S21
HR2 (Herefordshire, County of)
~949 kWh/kWp · +0% vs S21
DY12 (Wyre Forest)
~949 kWh/kWp · -0% vs S21