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Solar panel cost in Renfrewshire (PA11)

See realistic solar installation costs, savings and payback for PA11 (Renfrewshire) 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
11.9 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£821
What you save every year
Profit Over 25 Years
£10,760
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 Southern Scotland, the current unit rate is 25.85p/kWh with a 64.17p/day standing charge. Your postcode’s south-facing sunshine yield is 837 kWh/kW — 12 below the regional median (850).

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 837 kWh per year on a south-facing roof. We value self-used electricity at 25.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.9p/kWh
Standing charge
64.2p/day
Sunshine yield (south)
837 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: £684, Upfront: £8,139, Break-even: 11.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1675 kWh 670 kWh 1005 kWh £173 £100 £274 £3,256 11.9 yrs £2,218
3 kW 2512 kWh 1005 kWh 1507 kWh £260 £151 £411 £4,883 11.9 yrs £3,327
4 kW 3350 kWh 1340 kWh 2010 kWh £346 £201 £547 £6,511 11.9 yrs £4,436
5 kW 4187 kWh 1675 kWh 2512 kWh £433 £251 £684 £8,139 11.9 yrs £5,545
6 kW 5025 kWh 2010 kWh 3015 kWh £520 £301 £821 £9,767 11.9 yrs £6,655
7 kW 5862 kWh 2345 kWh 3517 kWh £606 £352 £958 £11,394 11.9 yrs £7,764
8 kW 6700 kWh 2680 kWh 4020 kWh £693 £402 £1,095 £13,022 11.9 yrs £8,873

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: £817, Upfront: £10,239, Break-even: 12.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1675 kWh 1005 kWh 670 kWh £260 £67 £327 £5,356 16.4 yrs £1,180
3 kW 2512 kWh 1507 kWh 1005 kWh £390 £100 £490 £6,983 14.2 yrs £2,820
4 kW 3350 kWh 2010 kWh 1340 kWh £520 £134 £654 £8,611 13.2 yrs £4,460
5 kW 4187 kWh 2512 kWh 1675 kWh £649 £167 £817 £10,239 12.5 yrs £6,100
6 kW 5025 kWh 3015 kWh 2010 kWh £779 £201 £980 £11,867 12.1 yrs £7,740
7 kW 5862 kWh 3517 kWh 2345 kWh £909 £234 £1,144 £13,494 11.8 yrs £9,380
8 kW 6700 kWh 4020 kWh 2680 kWh £1,039 £268 £1,307 £15,122 11.6 yrs £11,020

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: £883, Upfront: £11,639, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1675 kWh 1172 kWh 502 kWh £303 £50 £353 £6,756 19.1 yrs £311
3 kW 2512 kWh 1759 kWh 754 kWh £455 £75 £530 £8,383 15.8 yrs £2,217
4 kW 3350 kWh 2345 kWh 1005 kWh £606 £100 £707 £10,011 14.2 yrs £4,122
5 kW 4187 kWh 2931 kWh 1256 kWh £758 £126 £883 £11,639 13.2 yrs £6,028
6 kW 5025 kWh 3517 kWh 1507 kWh £909 £151 £1,060 £13,267 12.5 yrs £7,933
7 kW 5862 kWh 4104 kWh 1759 kWh £1,061 £176 £1,237 £14,894 12.0 yrs £9,839
8 kW 6700 kWh 4690 kWh 2010 kWh £1,212 £201 £1,413 £16,522 11.7 yrs £11,744

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: £903, Upfront: £13,389, 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 1675 kWh 1223 kWh 452 kWh £316 £45 £361 £8,506 23.5 yrs £-1,280
3 kW 2512 kWh 1834 kWh 678 kWh £474 £68 £542 £10,133 18.7 yrs £706
4 kW 3350 kWh 2445 kWh 904 kWh £632 £90 £723 £11,761 16.3 yrs £2,691
5 kW 4187 kWh 3057 kWh 1131 kWh £790 £113 £903 £13,389 14.8 yrs £4,676
6 kW 5025 kWh 3668 kWh 1357 kWh £948 £136 £1,084 £15,017 13.9 yrs £6,661
7 kW 5862 kWh 4279 kWh 1583 kWh £1,106 £158 £1,265 £16,644 13.2 yrs £8,646
8 kW 6700 kWh 4891 kWh 1809 kWh £1,264 £181 £1,445 £18,272 12.6 yrs £10,631

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: £917, Upfront: £15,139, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1675 kWh 1256 kWh 419 kWh £325 £42 £367 £10,256 28.0 yrs £-2,923
3 kW 2512 kWh 1884 kWh 628 kWh £487 £63 £550 £11,883 21.6 yrs £-885
4 kW 3350 kWh 2512 kWh 837 kWh £649 £84 £733 £13,511 18.4 yrs £1,153
5 kW 4187 kWh 3141 kWh 1047 kWh £812 £105 £917 £15,139 16.5 yrs £3,191
6 kW 5025 kWh 3769 kWh 1256 kWh £974 £126 £1,100 £16,767 15.2 yrs £5,230
7 kW 5862 kWh 4397 kWh 1466 kWh £1,137 £147 £1,283 £18,394 14.3 yrs £7,268
8 kW 6700 kWh 5025 kWh 1675 kWh £1,299 £167 £1,466 £20,022 13.7 yrs £9,306

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: £930, Upfront: £17,589, 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 1675 kWh 1290 kWh 385 kWh £333 £39 £372 £12,706 34.2 yrs £-5,267
3 kW 2512 kWh 1935 kWh 578 kWh £500 £58 £558 £14,333 25.7 yrs £-3,176
4 kW 3350 kWh 2579 kWh 770 kWh £667 £77 £744 £15,961 21.5 yrs £-1,085
5 kW 4187 kWh 3224 kWh 963 kWh £833 £96 £930 £17,589 18.9 yrs £1,007
6 kW 5025 kWh 3869 kWh 1156 kWh £1,000 £116 £1,116 £19,217 17.2 yrs £3,098
7 kW 5862 kWh 4514 kWh 1348 kWh £1,167 £135 £1,302 £20,844 16.0 yrs £5,190
8 kW 6700 kWh 5159 kWh 1541 kWh £1,334 £154 £1,488 £22,472 15.1 yrs £7,281

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 Renfrewshire

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 PA11

Figures below are tailored to PA11 — click through for full league tables.

Solar Payback Index Rank #2482 of 2996
11.9 years (UK avg 10.8 years)
~£821 /yr • £9,767 upfront
Standing-Charge Drag Rank #1952 of 2996
28.5% (UK avg 26.6%) drag on savings
£234 fixed • ~£821 /yr value
Aspect Penalty View ranking →
East −18.9% West −20.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PA11

Monthly generation per kilowatt of solar panels

kWh 21 Jan 39 Feb 70 Mar 103 Apr 115 May 111 Jun 111 Jul 97 Aug 74 Sep 49 Oct 30 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 36.6% 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 26 kWh per month; the average month produces around 70 kWh. So a typical 4 kW home system would generate roughly 102 kWh in winter, or 279 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
837kWh/kW
A 1 kW system generates ~837 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

No EPC data available for this outcode

Coverage

Renfrewshire (85%)|Inverclyde (15%)

Areas Covered

Bishopton, Bridge of Weir and Langbank, Inverclyde East, Houston, Crosslee and Linwood

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 Southern Scotland

PA6 (Renfrewshire)
≈2.7 km away
Local sunshine: ~832 kWh/kWp · -1% vs PA11
PA10 (Renfrewshire)
≈3.1 km away
Local sunshine: ~832 kWh/kWp · -1% vs PA11
PA5 (Renfrewshire)
≈5.1 km away
Local sunshine: ~831 kWh/kWp · -1% vs PA11
PA13 (Inverclyde)
≈5.2 km away
Local sunshine: ~842 kWh/kWp · +1% vs PA11
PA9 (Renfrewshire)
≈5.3 km away
Local sunshine: ~825 kWh/kWp · -1% vs PA11
PA7 (Renfrewshire)
≈7.2 km away
Local sunshine: ~845 kWh/kWp · +1% vs PA11

Similar sunshine across the UK

KW3 (Highland)
~838 kWh/kWp · +0% vs PA11
BT81 (Derry City and Strabane)
~837 kWh/kWp · -0% vs PA11
BT42 (Mid and East Antrim)
~838 kWh/kWp · +0% vs PA11