SoCal/Good Solar

Solar Panel Installation in West Hills, California

One kilowatt of rooftop solar in West Hills produces about 1,742 kWh per year — 31% above the US average — measured by NREL’s PVWatts model at West Hills’s coordinates. A home here paying $300 a month typically needs a 7.98 kW system, around 19 panels, producing roughly 13,208 kWh a year and covering about 110% of the household’s electricity. Installed, that is $28,500–$36,000 and saves approximately $164 a month.

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Solar in West Hills by the numbers

Every figure below is computed for West Hills’s coordinates (34.2011, -118.645) using NREL PVWatts v8 and the same calculator on our home page — not a regional average.

Solar production and cost figures for West Hills, California
Solar resource1,742 kWh per kW per year
Compared to the US average31% higher
Typical system for a $300/mo bill7.98 kW · 19 panels
Estimated annual production13,208 kWh
Share of the bill coveredabout 110%
Installed price range$28,500 – $36,000
Estimated monthly saving$164
California average electricity rate33.3¢ per kWh
Weather data sourceNREL PVWatts v8 · California

About these figures

These are modelled estimates from public data, not measurements of any particular home, and not a quote. Sunlight comes from the US Department of Energy’s NREL PVWatts v8 model run at West Hills’s coordinates (California weather data, satellite-derived). Electricity rates come from the US Energy Information Administration’s state averages. Prices are our own build-up of equipment, labour, permitting and overhead at San Fernando Valley rates — an average across jobs, not a price for yours.

They assume a south-facing roof at a 20° pitch with 14% system losses and 420 W panels. Your roof’s real orientation, pitch, shading, condition and electrical service will move every one of these numbers, sometimes substantially. Public datasets also go stale between updates. Nothing here is a guarantee of production, savings or price — only a site visit and a written proposal are.

Common questions about solar in West Hills

How much do solar panels cost in West Hills?
A typical West Hills home with a $300 monthly electric bill needs about a 7.98 kW system — roughly 19 panels. Installed, that lands between $28,500 and $36,000 before any incentives. The range is wide because a firm price depends on the roof's condition, pitch and shading, the electrical service, and whether the system is financed. Note that the federal Section 25D tax credit ended on 31 December 2025, so a cash or loan purchase in 2026 receives no federal credit.
How much electricity does a solar panel produce in West Hills?
In West Hills, one kilowatt of south-facing rooftop solar produces about 1,742 kWh per year, measured by NREL's PVWatts model at the city's coordinates using satellite irradiance data. That is roughly 31% above the US average of 1,329 kWh per kilowatt. A 7.98 kW system — about 19 panels — therefore generates around 13,208 kWh a year, enough to cover approximately 110% of the 10,322 kWh a $300-a-month household uses.
Is solar worth it in West Hills?
West Hills gets 31% more sun per installed kilowatt than the US average, and California electricity averages 33.3¢ per kWh — well above the national 18.4¢. Those two facts are what make the economics work here. A 7.98 kW system on a $300 monthly bill saves roughly $164 a month. The complication in California is NEM 3.0: exported power is credited well below the retail rate, so self-consumption matters and battery storage changes the return more than it does in other states.
How many solar panels does a house in West Hills need?
It depends on electricity use, not house size. Divide annual kWh by the 1,742 kWh a kilowatt produces in West Hills, then divide by panel wattage. For a West Hills home using 10,322 kWh a year — about a $300 monthly bill — that works out to 19 panels at 420 watts each, or 7.98 kW. A roof also has to physically hold them: 19 panels need roughly 409 square feet of unshaded, well-oriented roof.

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