SolarSolar Panels in SA3 Swansea
West Wales • Wales • 1245 sun hours/year
Homes in SA3 save an average of
with solar panels • 9.5-year payback
Get 3 Free Solar Quotes in Swansea
Compare prices from MCS-certified installers near you. No obligation, completely free.
Solar Panel Potential in Swansea (SA3)
Postcode district SA3 receives approximately 1245 hours of sunshine per year, making it a viable location for solar panels in the UK. A typical 4kW system here generates around 3,486 kWh of electricity annually.
Of this, roughly half (1,743 kWh) is used directly in your home, saving you £410 on electricity bills at the current rate of 23.5p/kWh. The remaining 1,743 kWh is exported to the grid under the Smart Export Guarantee, earning you an additional £209 per year at 12p/kWh.
Solar Panel Costs in SA3
The average cost of a 4kW solar panel system in the Wales region is approximately £5,900. This includes panels, inverter, mounting, and installation by an MCS-certified installer. Prices have fallen over 60% in the last decade, and 0% VAT currently applies.
At £619 annual savings, the system pays for itself in 9.5 years, then generates profit for a further 15 years — a total 25-year return of £8,675.
Year-by-Year Savings Breakdown
Payback Timeline
| Year | Generation (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| 1 | 3,486 | £619 | £-5,281 |
| 2 | 3,469 | £616 | £-4,665 |
| 3 | 3,451 | £613 | £-4,052 |
| 4 | 3,434 | £609 | £-3,443 |
| 5 | 3,417 | £606 | £-2,837 |
| 6 | 3,400 | £603 | £-2,234 |
| 7 | 3,383 | £600 | £-1,634 |
| 8 | 3,366 | £597 | £-1,037 |
| 9 | 3,349 | £595 | £-442 |
| 10 | 3,332 | £592 | +£150 |
| 11 | 3,316 | £589 | +£739 |
| 12 | 3,299 | £586 | +£1,325 |
| 13 | 3,282 | £583 | +£1,908 |
| 14 | 3,266 | £580 | +£2,488 |
| 15 | 3,250 | £577 | +£3,065 |
| 16 | 3,234 | £574 | +£3,639 |
| 17 | 3,217 | £571 | +£4,210 |
| 18 | 3,201 | £568 | +£4,778 |
| 19 | 3,185 | £565 | +£5,343 |
| 20 | 3,169 | £562 | +£5,905 |
| 21 | 3,153 | £560 | +£6,465 |
| 22 | 3,138 | £557 | +£7,022 |
| 23 | 3,122 | £554 | +£7,576 |
| 24 | 3,106 | £551 | +£8,127 |
| 25 | 3,091 | £548 | +£8,675 |
How SA3 Compares to the UK Average
Nearby Areas Compared
| Area | Sun Hours | Annual Savings | Payback |
|---|---|---|---|
| SA3 Swansea | 1245hrs | £619/yr | 9.5 yrs |
| SA2 Swansea | 1244hrs | £618/yr | 9.5 yrs |
| SA4 Swansea | 1246hrs | £619/yr | 9.5 yrs |
| SA5 Swansea | 1247hrs | £620/yr | 9.5 yrs |
Battery Storage in SA3
With 3,486 kWh of annual generation, adding a battery could increase your self-consumption from 50% to 80%, boosting annual savings significantly.
Is battery storage worth it in SA3? →Get 3 Free Solar Quotes in Swansea
Compare prices from MCS-certified installers near you. No obligation, completely free.
How We Calculated These Figures
Our estimates are based on 1245 annual sun hours for the Wales region, a standard 4kW system with south-facing orientation, and 50% self-consumption ratio. Electricity savings use the current average tariff of 23.5p/kWh, and export income uses the Smart Export Guarantee average of 12p/kWh. Panel degradation of 0.5% per year is factored into 25-year projections.
Actual savings will vary based on your roof orientation, shading, energy usage patterns, chosen system size, and installer pricing. We recommend getting at least 3 quotes from MCS-certified installers for accurate pricing.
Nearby Areas
Frequently Asked Questions
How much can I save with solar panels in SA3?
Homes in SA3 Swansea save an average of £619 per year with a typical 4kW solar panel system. This is based on 1245 annual sun hours, generating 3,486 kWh of electricity. Over 25 years, the total profit after system costs is £8,675.
What is the payback period for solar panels in SA3?
The average payback period for a 4kW solar panel system in SA3 is 9.5 years. After that, you enjoy 15 or more years of pure profit from reduced electricity bills and Smart Export Guarantee payments.
How many solar panels do I need for a home in SA3?
A typical 4kW system uses 10-12 solar panels (depending on panel wattage, typically 350-400W each). This suits most 3-4 bedroom homes. For exact sizing, get a quote from an MCS-certified installer who will assess your roof space and orientation.
Is solar worth it in SA3 Swansea?
Yes. With 1245 sun hours per year (£65 below the UK average savings), SA3 is a viable location for solar. A 4kW system costs approximately £5,900 and pays for itself in 9.5 years, then generates profit for 15+ more years.
What grants are available for solar panels in SA3?
Solar panels in the UK currently benefit from 0% VAT (until at least 2027), reducing upfront costs. You may also be eligible for the ECO4 scheme if you receive certain benefits. The Smart Export Guarantee pays you for electricity you export to the grid — the average rate in your area is 12p/kWh.
All postcodes in Swansea • West Wales solar overview • Solar savings calculator • Solar panel costs • Choosing an installer • Grants & incentives • All solar guides
Get solar updates for SA3
We'll notify you of changes to solar incentives and electricity prices in your area.