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Solar panel cost in Powys (LD1)

See realistic solar installation costs, savings and payback for LD1 (Powys) 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
10.9 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£895
What you save every year
Profit Over 25 Years
£12,606
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 South Wales, the current unit rate is 26.33p/kWh with a 57.84p/day standing charge. Your postcode’s south-facing sunshine yield is 902 kWh/kW — 66 below the regional median (968).

Read the full story

A typical roof here lands around 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 902 kWh per year on a south-facing roof. We value self-used electricity at 26.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.3p/kWh
Standing charge
57.8p/day
Sunshine yield (south)
902 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: £746, Upfront: £8,139, Break-even: 10.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 722 kWh 1083 kWh £190 £108 £298 £3,256 10.9 yrs £2,711
3 kW 2707 kWh 1083 kWh 1624 kWh £285 £162 £447 £4,883 10.9 yrs £4,066
4 kW 3609 kWh 1444 kWh 2165 kWh £380 £217 £597 £6,511 10.9 yrs £5,421
5 kW 4511 kWh 1804 kWh 2707 kWh £475 £271 £746 £8,139 10.9 yrs £6,777
6 kW 5413 kWh 2165 kWh 3248 kWh £570 £325 £895 £9,767 10.9 yrs £8,132
7 kW 6315 kWh 2526 kWh 3789 kWh £665 £379 £1,044 £11,394 10.9 yrs £9,487
8 kW 7218 kWh 2887 kWh 4331 kWh £760 £433 £1,193 £13,022 10.9 yrs £10,842

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: £893, Upfront: £10,239, 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 1804 kWh 1083 kWh 722 kWh £285 £72 £357 £5,356 15.0 yrs £1,789
3 kW 2707 kWh 1624 kWh 1083 kWh £428 £108 £536 £6,983 13.0 yrs £3,734
4 kW 3609 kWh 2165 kWh 1444 kWh £570 £144 £714 £8,611 12.1 yrs £5,679
5 kW 4511 kWh 2707 kWh 1804 kWh £713 £180 £893 £10,239 11.5 yrs £7,623
6 kW 5413 kWh 3248 kWh 2165 kWh £855 £217 £1,072 £11,867 11.1 yrs £9,568
7 kW 6315 kWh 3789 kWh 2526 kWh £998 £253 £1,250 £13,494 10.8 yrs £11,512
8 kW 7218 kWh 4331 kWh 2887 kWh £1,140 £289 £1,429 £15,122 10.6 yrs £13,457

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: £967, Upfront: £11,639, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1263 kWh 541 kWh £333 £54 £387 £6,756 17.5 yrs £979
3 kW 2707 kWh 1895 kWh 812 kWh £499 £81 £580 £8,383 14.5 yrs £3,218
4 kW 3609 kWh 2526 kWh 1083 kWh £665 £108 £773 £10,011 12.9 yrs £5,457
5 kW 4511 kWh 3158 kWh 1353 kWh £831 £135 £967 £11,639 12.0 yrs £7,696
6 kW 5413 kWh 3789 kWh 1624 kWh £998 £162 £1,160 £13,267 11.4 yrs £9,936
7 kW 6315 kWh 4421 kWh 1895 kWh £1,164 £189 £1,353 £14,894 11.0 yrs £12,175
8 kW 7218 kWh 5052 kWh 2165 kWh £1,330 £217 £1,547 £16,522 10.7 yrs £14,414

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: £989, Upfront: £13,389, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1317 kWh 487 kWh £347 £49 £396 £8,506 21.5 yrs £-595
3 kW 2707 kWh 1976 kWh 731 kWh £520 £73 £593 £10,133 17.1 yrs £1,733
4 kW 3609 kWh 2634 kWh 974 kWh £694 £97 £791 £11,761 14.9 yrs £4,061
5 kW 4511 kWh 3293 kWh 1218 kWh £867 £122 £989 £13,389 13.5 yrs £6,388
6 kW 5413 kWh 3952 kWh 1462 kWh £1,040 £146 £1,187 £15,017 12.7 yrs £8,716
7 kW 6315 kWh 4610 kWh 1705 kWh £1,214 £171 £1,384 £16,644 12.0 yrs £11,044
8 kW 7218 kWh 5269 kWh 1949 kWh £1,387 £195 £1,582 £18,272 11.5 yrs £13,372

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: £1,004, Upfront: £15,139, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1353 kWh 451 kWh £356 £45 £401 £10,256 25.5 yrs £-2,227
3 kW 2707 kWh 2030 kWh 677 kWh £534 £68 £602 £11,883 19.7 yrs £160
4 kW 3609 kWh 2707 kWh 902 kWh £713 £90 £803 £13,511 16.8 yrs £2,546
5 kW 4511 kWh 3383 kWh 1128 kWh £891 £113 £1,004 £15,139 15.1 yrs £4,933
6 kW 5413 kWh 4060 kWh 1353 kWh £1,069 £135 £1,204 £16,767 13.9 yrs £7,320
7 kW 6315 kWh 4737 kWh 1579 kWh £1,247 £158 £1,405 £18,394 13.1 yrs £9,706
8 kW 7218 kWh 5413 kWh 1804 kWh £1,425 £180 £1,606 £20,022 12.5 yrs £12,093

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: £1,018, Upfront: £17,589, Break-even: 17.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1389 kWh 415 kWh £366 £42 £407 £12,706 31.2 yrs £-4,559
3 kW 2707 kWh 2084 kWh 623 kWh £549 £62 £611 £14,333 23.5 yrs £-2,113
4 kW 3609 kWh 2779 kWh 830 kWh £732 £83 £815 £15,961 19.6 yrs £332
5 kW 4511 kWh 3474 kWh 1038 kWh £915 £104 £1,018 £17,589 17.3 yrs £2,778
6 kW 5413 kWh 4168 kWh 1245 kWh £1,097 £125 £1,222 £19,217 15.7 yrs £5,223
7 kW 6315 kWh 4863 kWh 1453 kWh £1,280 £145 £1,426 £20,844 14.6 yrs £7,669
8 kW 7218 kWh 5558 kWh 1660 kWh £1,463 £166 £1,629 £22,472 13.8 yrs £10,114

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 Powys

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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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for LD1

Figures below are tailored to LD1 — click through for full league tables.

Big-Roof Britain Rank #505 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1887 of 2996
10.9 years (UK avg 10.8 years)
~£895 /yr • £9,767 upfront
Standing-Charge Drag Rank #1117 of 2996
23.6% (UK avg 26.6%) drag on savings
£211 fixed • ~£895 /yr value
Aspect Penalty View ranking →
East −18.2% West −18.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LD1

Monthly generation per kilowatt of solar panels

kWh 30 Jan 46 Feb 79 Mar 106 Apr 115 May 113 Jun 111 Jul 99 Aug 83 Sep 57 Oct 37 Nov 26 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 44.9% 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 34 kWh per month; the average month produces around 75 kWh. So a typical 4 kW home system would generate roughly 135 kWh in winter, or 301 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.33p/kWh
Daily Fixed Charge
57.84p/day
Local Sunshine
902kWh/kW
A 1 kW system generates ~902 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 54% • Flats: 26% • Bungalows: 19% Based on 3,606 properties

Coverage

Powys (100%)

Areas Covered

Llandrindod South, Ithon Valley, Llandrindod North, Disserth and Trecoed with Newbridge, Llanyre with Nantmel, Llanelwedd, Llangunllo with Norton, Llanafanfawr with Garth + 1 more

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 South Wales

LD2 (Powys)
≈10.4 km away
Local sunshine: ~913 kWh/kWp · +1% vs LD1
LD6 (Powys)
≈11.1 km away
Local sunshine: ~903 kWh/kWp · +0% vs LD1
LD4 (Powys)
≈18.5 km away
Local sunshine: ~903 kWh/kWp · +0% vs LD1
LD5 (Powys)
≈22.3 km away
Local sunshine: ~878 kWh/kWp · -3% vs LD1
HR3 (Herefordshire, County of)
≈25.6 km away
Local sunshine: ~915 kWh/kWp · +1% vs LD1
LD3 (Powys)
≈32.7 km away
Local sunshine: ~876 kWh/kWp · -3% vs LD1

Similar sunshine across the UK

HX1 (Calderdale)
~902 kWh/kWp · +0% vs LD1
TS15 (Stockton-on-Tees)
~902 kWh/kWp · -0% vs LD1
NE47 (Northumberland)
~902 kWh/kWp · -0% vs LD1