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Solar panel cost in Thurrock (RM15)

See realistic solar installation costs, savings and payback for RM15 (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
£678
What you save every year
Profit Over 25 Years
£9,642
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 1024 kWh/kW — 15 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 1024 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)
1024 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 2048 kWh 819 kWh 1229 kWh £216 £123 £339 £3,654 10.8 yrs £3,126
3 kW 3072 kWh 1229 kWh 1843 kWh £324 £184 £508 £5,481 10.8 yrs £4,689
4 kW 4096 kWh 1638 kWh 2458 kWh £432 £246 £678 £7,307 10.8 yrs £6,252
5 kW 5120 kWh 2048 kWh 3072 kWh £540 £307 £847 £9,134 10.8 yrs £7,815
6 kW 6144 kWh 2458 kWh 3686 kWh £648 £369 £1,017 £10,961 10.8 yrs £9,378
7 kW 7168 kWh 2867 kWh 4301 kWh £756 £430 £1,186 £12,788 10.8 yrs £10,941
8 kW 8192 kWh 3277 kWh 4915 kWh £864 £492 £1,356 £14,615 10.8 yrs £12,504

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: £1,015, 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 2048 kWh 1229 kWh 819 kWh £324 £82 £406 £5,754 14.2 yrs £2,368
3 kW 3072 kWh 1843 kWh 1229 kWh £486 £123 £609 £7,581 12.4 yrs £4,602
4 kW 4096 kWh 2458 kWh 1638 kWh £648 £164 £812 £9,407 11.6 yrs £6,836
5 kW 5120 kWh 3072 kWh 2048 kWh £810 £205 £1,015 £11,234 11.1 yrs £9,069
6 kW 6144 kWh 3686 kWh 2458 kWh £972 £246 £1,218 £13,061 10.7 yrs £11,303
7 kW 7168 kWh 4301 kWh 2867 kWh £1,135 £287 £1,421 £14,888 10.5 yrs £13,537
8 kW 8192 kWh 4915 kWh 3277 kWh £1,297 £328 £1,624 £16,715 10.3 yrs £15,771

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: £1,099, 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 2048 kWh 1434 kWh 614 kWh £378 £61 £440 £7,154 16.3 yrs £1,639
3 kW 3072 kWh 2150 kWh 922 kWh £567 £92 £659 £8,981 13.6 yrs £4,208
4 kW 4096 kWh 2867 kWh 1229 kWh £756 £123 £879 £10,807 12.3 yrs £6,777
5 kW 5120 kWh 3584 kWh 1536 kWh £945 £154 £1,099 £12,634 11.5 yrs £9,347
6 kW 6144 kWh 4301 kWh 1843 kWh £1,135 £184 £1,319 £14,461 11.0 yrs £11,916
7 kW 7168 kWh 5018 kWh 2150 kWh £1,324 £215 £1,539 £16,288 10.6 yrs £14,485
8 kW 8192 kWh 5734 kWh 2458 kWh £1,513 £246 £1,758 £18,115 10.3 yrs £17,055

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: £1,124, 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 2048 kWh 1495 kWh 553 kWh £394 £55 £450 £8,904 19.8 yrs £90
3 kW 3072 kWh 2243 kWh 829 kWh £592 £83 £675 £10,731 15.9 yrs £2,760
4 kW 4096 kWh 2990 kWh 1106 kWh £789 £111 £899 £12,557 14.0 yrs £5,430
5 kW 5120 kWh 3738 kWh 1382 kWh £986 £138 £1,124 £14,384 12.8 yrs £8,100
6 kW 6144 kWh 4485 kWh 1659 kWh £1,183 £166 £1,349 £16,211 12.0 yrs £10,770
7 kW 7168 kWh 5233 kWh 1935 kWh £1,380 £194 £1,574 £18,038 11.5 yrs £13,440
8 kW 8192 kWh 5980 kWh 2212 kWh £1,578 £221 £1,799 £19,865 11.0 yrs £16,110

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: £1,141, Upfront: £16,134, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2048 kWh 1536 kWh 512 kWh £405 £51 £456 £10,654 23.3 yrs £-1,526
3 kW 3072 kWh 2304 kWh 768 kWh £608 £77 £685 £12,481 18.2 yrs £1,211
4 kW 4096 kWh 3072 kWh 1024 kWh £810 £102 £913 £14,307 15.7 yrs £3,948
5 kW 5120 kWh 3840 kWh 1280 kWh £1,013 £128 £1,141 £16,134 14.1 yrs £6,685
6 kW 6144 kWh 4608 kWh 1536 kWh £1,216 £154 £1,369 £17,961 13.1 yrs £9,423
7 kW 7168 kWh 5376 kWh 1792 kWh £1,418 £179 £1,597 £19,788 12.4 yrs £12,160
8 kW 8192 kWh 6144 kWh 2048 kWh £1,621 £205 £1,826 £21,615 11.8 yrs £14,897

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: £1,158, 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 2048 kWh 1577 kWh 471 kWh £416 £47 £463 £13,104 28.3 yrs £-3,842
3 kW 3072 kWh 2365 kWh 707 kWh £624 £71 £695 £14,931 21.5 yrs £-1,037
4 kW 4096 kWh 3154 kWh 942 kWh £832 £94 £926 £16,757 18.1 yrs £1,767
5 kW 5120 kWh 3942 kWh 1178 kWh £1,040 £118 £1,158 £18,584 16.1 yrs £4,571
6 kW 6144 kWh 4731 kWh 1413 kWh £1,248 £141 £1,389 £20,411 14.7 yrs £7,375
7 kW 7168 kWh 5519 kWh 1649 kWh £1,456 £165 £1,621 £22,238 13.7 yrs £10,179
8 kW 8192 kWh 6308 kWh 1884 kWh £1,664 £188 £1,852 £24,065 13.0 yrs £12,983

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 RM15

Figures below are tailored to RM15 — click through for full league tables.

Big-Roof Britain Rank #1909 of 2182
4.3 kWp (UK avg 5.1 kWp)
~9 panels (≈430 W)
Solar Payback Index Rank #1809 of 2996
10.8 years (UK avg 10.8 years)
~£678 /yr • £7,307 upfront
Standing-Charge Drag Rank #2073 of 2996
29.1% (UK avg 26.6%) drag on savings
£197 fixed • ~£678 /yr value
Aspect Penalty View ranking →
East −21.7% West −20.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in RM15

Monthly generation per kilowatt of solar panels

kWh 40 Jan 53 Feb 86 Mar 114 Apr 122 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
1024kWh/kW
A 1 kW system generates ~1024 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: 66% • Flats: 28% • Bungalows: 3% Based on 7,627 properties

Coverage

Thurrock (99%)|Havering (1%)

Areas Covered

Ockendon, Aveley and Uplands, Belhus, Rainham & Wennington, Upminster

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

RM20 (Thurrock)
≈3.5 km away
Local sunshine: ~1,023 kWh/kWp · -0% vs RM15
RM16 (Thurrock)
≈3.7 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM15
RM19 (Thurrock)
≈3.9 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM15
RM17 (Thurrock)
≈4.4 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs RM15
RM14 (Havering)
≈5.3 km away
Local sunshine: ~1,027 kWh/kWp · +0% vs RM15
RM13 (Havering)
≈6.3 km away
Local sunshine: ~1,015 kWh/kWp · -1% vs RM15

Similar sunshine across the UK

CF5 (Cardiff)
~1,024 kWh/kWp · +0% vs RM15
SO53 (Eastleigh)
~1,024 kWh/kWp · -0% vs RM15
RH13 (Horsham)
~1,024 kWh/kWp · +0% vs RM15