Cost Overview
Typical residential solar projects in Ealing range from £5,000 to £12,000 for a 3‑4 kW system, including panels, inverter, mounting, and labor. Prices vary with roof size, shading, and whether you choose premium monocrystalline panels or standard polycrystalline units.
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Planning Permission and Regulations
Ealing Council generally does not require planning permission for roof‑mounted systems under 10 kW, but listed buildings, conservation areas, or flat roofs may need approval. Always submit a pre‑application enquiry to confirm compliance.
Choosing an Installer
Look for MCS‑certified companies with a track record in west London. Request three quotes, compare warranties (typically 10‑25 years for panels, 5‑10 years for inverters), and verify that the installer handles grid‑connection applications with the DNO.
Performance Factors
Orientation, tilt, and shading directly affect output. A south‑facing roof at 30‑35° tilt yields 900‑1,100 kWh per kW annually in Ealing. Use shading analysis tools or an on‑site survey to avoid losses from nearby trees or chimneys.
Financial Incentives
The UK Smart Export Guarantee (SEG) pays 3‑7 p/kWh for excess electricity fed back to the grid. Some local lenders offer green mortgages with reduced interest for solar upgrades. No upfront feed‑in tariff exists post‑2020, so ROI relies on electricity savings and SEG payments.
Maintenance and Longevity
Solar arrays are low‑maintenance; an annual visual inspection and occasional cleaning keep performance within 95‑98% of initial ratings. Inverters may need replacement after 10‑12 years, which should be factored into long‑term budgeting.
Installation Timeline
From site survey to commissioning, a typical Ealing project takes 4‑6 weeks: 1 week for design and quote, 1‑2 weeks for permitting (if needed), 1‑2 weeks for procurement and installation, and a final inspection by the DNO.
Comparing System Sizes
| System Size | Typical Annual Output | Estimated Cost |
|---|---|---|
| 2 kW | 1,800‑2,200 kWh | £4,500‑£6,500 |
| 3 kW | 2,700‑3,300 kWh | £6,500‑£8,500 |
| 4 kW | 3,600‑4,400 kWh | £8,500‑£12,000 |
Key Takeaways
- Most Ealing roofs need no planning permission for systems under 10 kW.
- Choose MCS‑certified installers and compare at least three quotes.
- South‑facing roofs with minimal shading deliver the best return.
- Factor in inverter replacement and regular cleaning for true lifetime cost.