SolarSolar Panels in SA15 Llanelli
West Wales • Wales • 1366 sun hours/year
Homes in SA15 save an average of
with solar panels • 8.7-year payback
Get 3 Free Solar Quotes in Llanelli
Compare prices from MCS-certified installers near you. No obligation, completely free.
Solar Panel Potential in Llanelli (SA15)
Postcode district SA15 receives approximately 1366 hours of sunshine per year, making it a viable location for solar panels in the UK. A typical 4kW system here generates around 3,825 kWh of electricity annually.
Of this, roughly half (1,913 kWh) is used directly in your home, saving you £450 on electricity bills at the current rate of 23.5p/kWh. The remaining 1,912 kWh is exported to the grid under the Smart Export Guarantee, earning you an additional £229 per year at 12p/kWh.
Solar Panel Costs in SA15
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 £679 annual savings, the system pays for itself in 8.7 years, then generates profit for a further 16 years — a total 25-year return of £10,096.
Year-by-Year Savings Breakdown
Payback Timeline
| Year | Generation (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| 1 | 3,825 | £679 | £-5,221 |
| 2 | 3,806 | £675 | £-4,546 |
| 3 | 3,787 | £672 | £-3,874 |
| 4 | 3,768 | £669 | £-3,205 |
| 5 | 3,749 | £666 | £-2,539 |
| 6 | 3,730 | £662 | £-1,877 |
| 7 | 3,712 | £659 | £-1,218 |
| 8 | 3,693 | £656 | £-562 |
| 9 | 3,675 | £652 | +£90 |
| 10 | 3,656 | £649 | +£739 |
| 11 | 3,638 | £645 | +£1,384 |
| 12 | 3,620 | £642 | +£2,026 |
| 13 | 3,602 | £639 | +£2,665 |
| 14 | 3,584 | £636 | +£3,301 |
| 15 | 3,566 | £633 | +£3,934 |
| 16 | 3,548 | £630 | +£4,564 |
| 17 | 3,530 | £627 | +£5,191 |
| 18 | 3,513 | £624 | +£5,815 |
| 19 | 3,495 | £621 | +£6,436 |
| 20 | 3,478 | £618 | +£7,054 |
| 21 | 3,460 | £615 | +£7,669 |
| 22 | 3,443 | £612 | +£8,281 |
| 23 | 3,426 | £609 | +£8,890 |
| 24 | 3,408 | £605 | +£9,495 |
| 25 | 3,391 | £601 | +£10,096 |
How SA15 Compares to the UK Average
Nearby Areas Compared
| Area | Sun Hours | Annual Savings | Payback |
|---|---|---|---|
| SA15 Llanelli | 1366hrs | £679/yr | 8.7 yrs |
| SA14 Llanelli | 1365hrs | £678/yr | 8.7 yrs |
| SA16 Burry Port | 1367hrs | £680/yr | 8.7 yrs |
| SA17 Kidwelly | 1368hrs | £680/yr | 8.7 yrs |
Battery Storage in SA15
With 3,825 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 SA15? →Get 3 Free Solar Quotes in Llanelli
Compare prices from MCS-certified installers near you. No obligation, completely free.
How We Calculated These Figures
Our estimates are based on 1366 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 SA15?
Homes in SA15 Llanelli save an average of £679 per year with a typical 4kW solar panel system. This is based on 1366 annual sun hours, generating 3,825 kWh of electricity. Over 25 years, the total profit after system costs is £10,096.
What is the payback period for solar panels in SA15?
The average payback period for a 4kW solar panel system in SA15 is 8.7 years. After that, you enjoy 16 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 SA15?
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 SA15 Llanelli?
Yes. With 1366 sun hours per year (£5 below the UK average savings), SA15 is a viable location for solar. A 4kW system costs approximately £5,900 and pays for itself in 8.7 years, then generates profit for 15+ more years.
What grants are available for solar panels in SA15?
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 Llanelli • West Wales solar overview • Solar savings calculator • Solar panel costs • Choosing an installer • Grants & incentives • All solar guides
Get solar updates for SA15
We'll notify you of changes to solar incentives and electricity prices in your area.