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Solar Panels Merthyr Tydfil: Costs, Savings & Local Data

How much can solar panels save you in Merthyr Tydfil?

A typical 4kW solar panel system in Merthyr Tydfil generates around 3,680 kWh per year, saving you approximately £534 annually on electricity bills and export payments. With 1,440 hours of sunshine per year, most Merthyr Tydfil homeowners see payback within 10–13 years.

Merthyr Tydfil's housing stock — from terraced and semi-detached homes to modern detached properties — is well-suited to solar panel installations. Most roof types in Merthyr Tydfil can accommodate a 3–5kW system, and with energy bills remaining high, solar offers a practical route to lower costs.

Merthyr Tydfil receives around 1,440 hours of sunshine per year. The South Wales valleys town has a mix of traditional terraces and modern estates. The Nest scheme and ECO4 are particularly relevant here — many households may qualify for free or subsidised solar.

Solar panel key figures for Merthyr Tydfil

1,440 hrs

Annual sunshine hours

Met Office / PVGIS regional data

3,680 kWh

Annual generation (4kW)

Based on 920 kWh/kWp yield

£534

Annual savings (4kW)

At 24.5p/kWh + SEG

~13 years

Estimated payback

Based on average 4kW system cost

Solar panel savings by system size in Merthyr Tydfil

The table below shows estimated costs, annual savings, and payback periods for different solar panel system sizes in Merthyr Tydfil. Figures are based on a south-facing roof with no shading, using Merthyr Tydfil's regional solar yield of 920 kWh/kWp.

Solar panel estimates for Merthyr Tydfil — based on 920 kWh/kWp regional yield, 24.5p/kWh electricity rate, 4.5p/kWh SEG rate. 0% VAT included.
System SizePanelsCostAnnual SavingPayback
3 kW~8 panels£4,500–£6,500£400~14 years
4 kW~10 panels£5,500–£8,000£534~13 years
5 kW~13 panels£6,500–£9,500£667~12 years

Solar energy in Merthyr Tydfil: local context

Wales benefits from the Welsh Government's active support for renewable energy. The varied landscape means solar performance differs between the sunnier south coast and the hillier inland areas, but most Welsh homes can benefit from solar.

Welsh homeowners may benefit from additional support through the Welsh Government's energy schemes, alongside the UK-wide Smart Export Guarantee and 0% VAT.

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Frequently asked questions about solar panels in Merthyr Tydfil

Solar panels in nearby areas

Showing areas near Merthyr Tydfil. Solar conditions vary by location.

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