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Solar panel cost in Thurrock (RM20)

See realistic solar installation costs, savings and payback for RM20 (Thurrock) 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
10.8 years
After this, it's pure profit
Upfront Cost
£7,307
What you pay to get started
Annual Benefit
£677
What you save every year
Profit Over 25 Years
£9,630
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

In Eastern, the current unit rate is 26.38p/kWh with a 53.94p/day standing charge. Your postcode’s south-facing sunshine yield is 1023 kWh/kW — 14 above the regional median (1009).

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 1023 kWh per year on a south-facing roof. We value self-used electricity at 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
53.9p/day
Sunshine yield (south)
1023 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: £847, Upfront: £9,134, Break-even: 10.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 819 kWh 1228 kWh £216 £123 £339 £3,654 10.8 yrs £3,121
3 kW 3070 kWh 1228 kWh 1842 kWh £324 £184 £508 £5,481 10.8 yrs £4,682
4 kW 4093 kWh 1637 kWh 2456 kWh £432 £246 £677 £7,307 10.8 yrs £6,242
5 kW 5116 kWh 2047 kWh 3070 kWh £540 £307 £847 £9,134 10.8 yrs £7,803
6 kW 6140 kWh 2456 kWh 3684 kWh £648 £368 £1,016 £10,961 10.8 yrs £9,364
7 kW 7163 kWh 2865 kWh 4298 kWh £756 £430 £1,186 £12,788 10.8 yrs £10,924
8 kW 8186 kWh 3274 kWh 4912 kWh £864 £491 £1,355 £14,615 10.8 yrs £12,485

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £1,014, Upfront: £11,234, Break-even: 11.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 1228 kWh 819 kWh £324 £82 £406 £5,754 14.2 yrs £2,362
3 kW 3070 kWh 1842 kWh 1228 kWh £486 £123 £609 £7,581 12.5 yrs £4,593
4 kW 4093 kWh 2456 kWh 1637 kWh £648 £164 £812 £9,407 11.6 yrs £6,824
5 kW 5116 kWh 3070 kWh 2047 kWh £810 £205 £1,014 £11,234 11.1 yrs £9,055
6 kW 6140 kWh 3684 kWh 2456 kWh £972 £246 £1,217 £13,061 10.7 yrs £11,286
7 kW 7163 kWh 4298 kWh 2865 kWh £1,134 £287 £1,420 £14,888 10.5 yrs £13,517
8 kW 8186 kWh 4912 kWh 3274 kWh £1,296 £327 £1,623 £16,715 10.3 yrs £15,748

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,098, Upfront: £12,634, Break-even: 11.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 1433 kWh 614 kWh £378 £61 £439 £7,154 16.3 yrs £1,633
3 kW 3070 kWh 2149 kWh 921 kWh £567 £92 £659 £8,981 13.6 yrs £4,199
4 kW 4093 kWh 2865 kWh 1228 kWh £756 £123 £879 £10,807 12.3 yrs £6,765
5 kW 5116 kWh 3581 kWh 1535 kWh £945 £153 £1,098 £12,634 11.5 yrs £9,331
6 kW 6140 kWh 4298 kWh 1842 kWh £1,134 £184 £1,318 £14,461 11.0 yrs £11,898
7 kW 7163 kWh 5014 kWh 2149 kWh £1,323 £215 £1,538 £16,288 10.6 yrs £14,464
8 kW 8186 kWh 5730 kWh 2456 kWh £1,512 £246 £1,757 £18,115 10.3 yrs £17,030

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,123, Upfront: £14,384, Break-even: 12.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 1494 kWh 553 kWh £394 £55 £449 £8,904 19.8 yrs £84
3 kW 3070 kWh 2241 kWh 829 kWh £591 £83 £674 £10,731 15.9 yrs £2,750
4 kW 4093 kWh 2988 kWh 1105 kWh £788 £111 £899 £12,557 14.0 yrs £5,417
5 kW 5116 kWh 3735 kWh 1381 kWh £985 £138 £1,123 £14,384 12.8 yrs £8,084
6 kW 6140 kWh 4482 kWh 1658 kWh £1,182 £166 £1,348 £16,211 12.0 yrs £10,751
7 kW 7163 kWh 5229 kWh 1934 kWh £1,379 £193 £1,573 £18,038 11.5 yrs £13,418
8 kW 8186 kWh 5976 kWh 2210 kWh £1,576 £221 £1,797 £19,865 11.1 yrs £16,085

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,140, Upfront: £16,134, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 1535 kWh 512 kWh £405 £51 £456 £10,654 23.4 yrs £-1,532
3 kW 3070 kWh 2302 kWh 767 kWh £607 £77 £684 £12,481 18.2 yrs £1,202
4 kW 4093 kWh 3070 kWh 1023 kWh £810 £102 £912 £14,307 15.7 yrs £3,935
5 kW 5116 kWh 3837 kWh 1279 kWh £1,012 £128 £1,140 £16,134 14.2 yrs £6,669
6 kW 6140 kWh 4605 kWh 1535 kWh £1,215 £153 £1,368 £17,961 13.1 yrs £9,403
7 kW 7163 kWh 5372 kWh 1791 kWh £1,417 £179 £1,596 £19,788 12.4 yrs £12,137
8 kW 8186 kWh 6140 kWh 2047 kWh £1,620 £205 £1,824 £21,615 11.8 yrs £14,871

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,157, Upfront: £18,584, Break-even: 16.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2047 kWh 1576 kWh 471 kWh £416 £47 £463 £13,104 28.3 yrs £-3,848
3 kW 3070 kWh 2364 kWh 706 kWh £624 £71 £694 £14,931 21.5 yrs £-1,047
4 kW 4093 kWh 3152 kWh 941 kWh £831 £94 £926 £16,757 18.1 yrs £1,754
5 kW 5116 kWh 3940 kWh 1177 kWh £1,039 £118 £1,157 £18,584 16.1 yrs £4,555
6 kW 6140 kWh 4728 kWh 1412 kWh £1,247 £141 £1,388 £20,411 14.7 yrs £7,356
7 kW 7163 kWh 5515 kWh 1647 kWh £1,455 £165 £1,620 £22,238 13.7 yrs £10,156
8 kW 8186 kWh 6303 kWh 1883 kWh £1,663 £188 £1,851 £24,065 13.0 yrs £12,957

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, 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 Thurrock

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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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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Insights for RM20

Figures below are tailored to RM20 — click through for full league tables.

Big-Roof Britain Rank #2095 of 2182
3.9 kWp (UK avg 5.1 kWp)
~8 panels (≈430 W)
Solar Payback Index Rank #1810 of 2996
10.8 years (UK avg 10.8 years)
~£677 /yr • £7,307 upfront
Standing-Charge Drag Rank #2074 of 2996
29.1% (UK avg 26.6%) drag on savings
£197 fixed • ~£677 /yr value
Aspect Penalty View ranking →
East −21.6% West −20.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in RM20

Monthly generation per kilowatt of solar panels

kWh 39 Jan 53 Feb 85 Mar 114 Apr 121 May 123 Jun 124 Jul 113 Aug 96 Sep 70 Oct 48 Nov 36 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.0% of an average month (Dec–Feb)

Best / worst month: Jul / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 43 kWh per month; the average month produces around 85 kWh. So a typical 4 kW home system would generate roughly 171 kWh in winter, or 341 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
1023kWh/kW
A 1 kW system generates ~1023 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: 59% • Flats: 40% • Bungalows: 0% Based on 2,202 properties

Coverage

Thurrock (100%)

Areas Covered

West Thurrock and South Stifford, Grays Riverside

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.

Compare nearby areas

Nearby in Eastern

RM19 (Thurrock)
≈2.6 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM20
RM17 (Thurrock)
≈2.8 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM20
RM16 (Thurrock)
≈2.9 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM20
RM15 (Thurrock)
≈3.5 km away
Local sunshine: ~1,024 kWh/kWp · +0% vs RM20
RM18 (Thurrock)
≈5.9 km away
Local sunshine: ~1,033 kWh/kWp · +1% vs RM20
RM13 (Havering)
≈7.9 km away
Local sunshine: ~1,015 kWh/kWp · -1% vs RM20

Similar sunshine across the UK

TN15 (Sevenoaks)
~1,023 kWh/kWp · +0% vs RM20
TN14 (Sevenoaks)
~1,023 kWh/kWp · +0% vs RM20
TN3 (Tunbridge Wells)
~1,023 kWh/kWp · +0% vs RM20