Independent solar numbers for your postcode using official UK data
Home Regions Guides Compare quotes Solar assistant
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality Seasonal Solar Output

Solar panel cost in Ashford (TN27)

See realistic solar installation costs, savings and payback for TN27 (Ashford) 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
9.4 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£1,042
What you save every year
Profit Over 25 Years
£16,279
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 East, the current unit rate is 26.67p/kWh with a 54.45p/day standing charge. Your postcode’s south-facing sunshine yield is 1042 kWh/kW — 13 above the regional median (1029).

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 1042 kWh per year on a south-facing roof. We value self-used electricity at 26.7p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.7p/kWh
Standing charge
54.5p/day
Sunshine yield (south)
1042 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: £868, Upfront: £8,139, Break-even: 9.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2083 kWh 833 kWh 1250 kWh £222 £125 £347 £3,256 9.4 yrs £3,690
3 kW 3125 kWh 1250 kWh 1875 kWh £333 £188 £521 £4,883 9.4 yrs £5,535
4 kW 4167 kWh 1667 kWh 2500 kWh £445 £250 £695 £6,511 9.4 yrs £7,380
5 kW 5209 kWh 2083 kWh 3125 kWh £556 £313 £868 £8,139 9.4 yrs £9,225
6 kW 6250 kWh 2500 kWh 3750 kWh £667 £375 £1,042 £9,767 9.4 yrs £11,070
7 kW 7292 kWh 2917 kWh 4375 kWh £778 £438 £1,215 £11,394 9.4 yrs £12,915
8 kW 8334 kWh 3334 kWh 5000 kWh £889 £500 £1,389 £13,022 9.4 yrs £14,760

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: £1,042, Upfront: £10,239, Break-even: 9.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2083 kWh 1250 kWh 833 kWh £333 £83 £417 £5,356 12.9 yrs £2,979
3 kW 3125 kWh 1875 kWh 1250 kWh £500 £125 £625 £6,983 11.2 yrs £5,519
4 kW 4167 kWh 2500 kWh 1667 kWh £667 £167 £833 £8,611 10.3 yrs £8,058
5 kW 5209 kWh 3125 kWh 2083 kWh £833 £208 £1,042 £10,239 9.8 yrs £10,598
6 kW 6250 kWh 3750 kWh 2500 kWh £1,000 £250 £1,250 £11,867 9.5 yrs £13,137
7 kW 7292 kWh 4375 kWh 2917 kWh £1,167 £292 £1,459 £13,494 9.3 yrs £15,677
8 kW 8334 kWh 5000 kWh 3334 kWh £1,334 £333 £1,667 £15,122 9.1 yrs £18,217

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: £1,129, Upfront: £11,639, Break-even: 10.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2083 kWh 1458 kWh 625 kWh £389 £63 £451 £6,756 15.0 yrs £2,274
3 kW 3125 kWh 2188 kWh 938 kWh £583 £94 £677 £8,383 12.4 yrs £5,161
4 kW 4167 kWh 2917 kWh 1250 kWh £778 £125 £903 £10,011 11.1 yrs £8,048
5 kW 5209 kWh 3646 kWh 1563 kWh £972 £156 £1,129 £11,639 10.3 yrs £10,934
6 kW 6250 kWh 4375 kWh 1875 kWh £1,167 £188 £1,354 £13,267 9.8 yrs £13,821
7 kW 7292 kWh 5104 kWh 2188 kWh £1,361 £219 £1,580 £14,894 9.4 yrs £16,708
8 kW 8334 kWh 5834 kWh 2500 kWh £1,556 £250 £1,806 £16,522 9.1 yrs £19,595

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: £1,155, Upfront: £13,389, Break-even: 11.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2083 kWh 1521 kWh 563 kWh £406 £56 £462 £8,506 18.4 yrs £732
3 kW 3125 kWh 2281 kWh 844 kWh £608 £84 £693 £10,133 14.6 yrs £3,723
4 kW 4167 kWh 3042 kWh 1125 kWh £811 £113 £924 £11,761 12.7 yrs £6,714
5 kW 5209 kWh 3802 kWh 1406 kWh £1,014 £141 £1,155 £13,389 11.6 yrs £9,705
6 kW 6250 kWh 4563 kWh 1688 kWh £1,217 £169 £1,386 £15,017 10.8 yrs £12,696
7 kW 7292 kWh 5323 kWh 1969 kWh £1,420 £197 £1,617 £16,644 10.3 yrs £15,688
8 kW 8334 kWh 6084 kWh 2250 kWh £1,623 £225 £1,848 £18,272 9.9 yrs £18,679

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: £1,172, Upfront: £15,139, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2083 kWh 1563 kWh 521 kWh £417 £52 £469 £10,256 21.9 yrs £-879
3 kW 3125 kWh 2344 kWh 781 kWh £625 £78 £703 £11,883 16.9 yrs £2,182
4 kW 4167 kWh 3125 kWh 1042 kWh £833 £104 £938 £13,511 14.4 yrs £5,242
5 kW 5209 kWh 3906 kWh 1302 kWh £1,042 £130 £1,172 £15,139 12.9 yrs £8,303
6 kW 6250 kWh 4688 kWh 1563 kWh £1,250 £156 £1,406 £16,767 11.9 yrs £11,363
7 kW 7292 kWh 5469 kWh 1823 kWh £1,459 £182 £1,641 £18,394 11.2 yrs £14,424
8 kW 8334 kWh 6250 kWh 2083 kWh £1,667 £208 £1,875 £20,022 10.7 yrs £17,484

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: £1,189, Upfront: £17,589, 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 2083 kWh 1604 kWh 479 kWh £428 £48 £476 £12,706 26.7 yrs £-3,190
3 kW 3125 kWh 2406 kWh 719 kWh £642 £72 £714 £14,333 20.1 yrs £-60
4 kW 4167 kWh 3209 kWh 958 kWh £856 £96 £952 £15,961 16.8 yrs £3,070
5 kW 5209 kWh 4011 kWh 1198 kWh £1,070 £120 £1,189 £17,589 14.8 yrs £6,200
6 kW 6250 kWh 4813 kWh 1438 kWh £1,284 £144 £1,427 £19,217 13.5 yrs £9,330
7 kW 7292 kWh 5615 kWh 1677 kWh £1,498 £168 £1,665 £20,844 12.5 yrs £12,460
8 kW 8334 kWh 6417 kWh 1917 kWh £1,711 £192 £1,903 £22,472 11.8 yrs £15,590

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 Ashford

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.

Compare solar quotes before you sign

Check what MCS certification means

Understand DNO, G98 and G99 export limits

New quote check

Want a quote sanity check for TN27?

Share the first part of your postcode and a few basics. We’ll help you check whether system size, battery, export and paperwork assumptions look sensible before you commit to installer conversations.

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.

Request a quote sanity check →

Insights for TN27

Figures below are tailored to TN27 — click through for full league tables.

Big-Roof Britain Rank #329 of 2182
5.9 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #257 of 2996
9.4 years (UK avg 10.8 years)
~£1,042 /yr • £9,767 upfront
Standing-Charge Drag Rank #346 of 2996
19.1% (UK avg 26.6%) drag on savings
£199 fixed • ~£1,042 /yr value
Aspect Penalty View ranking →
East −20.1% West −20.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in TN27

Monthly generation per kilowatt of solar panels

kWh 39 Jan 52 Feb 87 Mar 119 Apr 124 May 128 Jun 126 Jul 115 Aug 99 Sep 69 Oct 47 Nov 36 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 48.8% of an average month (Dec–Feb)

Best / worst month: Jun / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 42 kWh per month; the average month produces around 87 kWh. So a typical 4 kW home system would generate roughly 170 kWh in winter, or 347 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.67p/kWh
Daily Fixed Charge
54.45p/day
Local Sunshine
1042kWh/kW
A 1 kW system generates ~1042 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: 71% • Flats: 9% • Bungalows: 18% Based on 4,011 properties

Coverage

Ashford (71%)|Maidstone (27%)|Tunbridge Wells (2%)

Areas Covered

Headcorn & Sutton Valence, Weald North, Charing, Biddenden, Upper Weald, Victoria, Cranbrook, Sissinghurst & Frittenden + 6 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 East

ME17 (Maidstone)
≈9.8 km away
Local sunshine: ~1,034 kWh/kWp · -1% vs TN27
TN30 (Ashford)
≈10.9 km away
Local sunshine: ~1,094 kWh/kWp · +5% vs TN27
TN26 (Ashford)
≈11.3 km away
Local sunshine: ~1,088 kWh/kWp · +4% vs TN27
TN23 (Ashford)
≈12.5 km away
Local sunshine: ~1,088 kWh/kWp · +4% vs TN27
TN17 (Tunbridge Wells)
≈13.4 km away
Local sunshine: ~1,046 kWh/kWp · +0% vs TN27
TN24 (Ashford)
≈13.8 km away
Local sunshine: ~1,093 kWh/kWp · +5% vs TN27

Similar sunshine across the UK

IP1 (Ipswich)
~1,042 kWh/kWp · +0% vs TN27
PL6 (Plymouth)
~1,042 kWh/kWp · +0% vs TN27
SS11 (Basildon)
~1,042 kWh/kWp · +0% vs TN27