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Solar panel and battery installers in Harrow
Manoj holds the OVO partnership for West London, and Harrow sits in their HA postcode patch. Book a free 45 minute video design and you get your roof layout, your numbers and a written quote, with nobody setting foot in your home.
What solar actually does in Harrow
Roofs in Harrow come in every shape: terraces, semis and detached streets, often on the same road. That variety is what the remote design process is built for. Manoj's team looks at your actual roof on satellite and aerial imagery, live on a free 45 minute video call, and sizes the system to it. PVGIS puts Harrow at 1,026 kWh per kWp a year, so a full 14 panel (6.3 kWp) roof here generates around 6,464 kWh a year.
Yield and peak sun hours are PVGIS estimates for Harrow's own coordinates, not a regional average. Your free design refines them for your actual roof.
Get your free quote from Manoj
Two minutes. We confirm your video slot within one working day.
Worth reading before your Harrow design call
Straight answers from the OVO Solar and Battery team, sourced and dated.
Cloudy days and north facing roofs, answered honestly
Cloud reduces output, it does not switch it off. North facing depends on pitch more than compass.
Read the guide →Why filling the roof first time is cheaper than adding later
Half covering a roof is the expensive choice. The fixed costs are the whole argument.
Read the guide →A home battery without solar panels, honestly assessed
A battery with no panels still earns every night. Here is how much, and where it does not stack up.
Read the guide →How much a home battery saves, unit by unit
What a battery saves per unit, per night and per year, with the losses taken off.
Read the guide →The 20p export rate, and how it compares to standard SEG
4p or 20p for the same exported units. The conditions on each, in plain terms.
Read the guide →The energy price cap, and what it does to your solar payback
The cap sets your unit price. That price is what every unit of your own solar is worth.
Read the guide →Solar installers near Harrow
We also cover Brent, Ealing, Barnet, Hillingdon, Camden and Hounslow.
See Manoj's full West London coverage →Independent solar guidance for Harrow from Clearline Home Energy
Generation figures are PVGIS v5.2 estimates retrieved August 2026 for the coordinates of Harrow, assuming a south-facing roof at a 35 degree pitch with no significant shading, the same assumptions as the regional figures on this site. Population is the House of Commons Library settlement classification figure. Your free design accounts for your actual orientation, pitch and shading.