Solar Installation in Nairobi

Pricing depends on system size, battery capacity and brand, but here are honest indicative figures for the Nairobi market in 2026 so you can budget before any installer visits. A single 300W mono panel runs about KES 16,000 supplied. A 5kWh lithium battery sits near KES 180,000, and a quality 5kW hybrid inverter is about KES 120,000.

Put together, a typical 5kW hybrid system for a family home, panels, inverter, one 5kWh battery, mounting, cabling and labour, starts from KES 650,000 fully installed. A smaller 3kW system for lights, TV, fridge and routers starts from KES 350,000. A larger 10kW system for a big house or small business with two batteries starts from KES 1,200,000. Your installer prices the exact system after the survey, since roof type, wiring distance and battery choice all move the number.

Good sizing starts with your last three Kenya Power bills and a list of what you actually run. A solar installer in Nairobi measures your daily kWh use, your peak demand (geyser, pump, iron and kettle are the heavy hitters) and how much roof faces north or west.

Nairobi gets strong, fairly consistent sun, roughly 5 to 5.5 peak sun hours a day across the year, so a 1kW of panels produces about 4 to 5 units daily. A house using 15 units a day usually needs about 3 to 4kW of panels plus enough battery to cover the evening and any outages. Your installer balances panel array, inverter rating and battery storage so you are not overpaying for capacity you never use.

Anyone can call themselves a solar installer, so we check the things that protect your money. Every installer we connect you with holds a valid EPRA licence (the Energy and Petroleum Regulatory Authority class that legally covers solar PV work in Kenya), carries a track record of completed Nairobi installs, and gives a written warranty.

Expect 10 to 12 years on panels for product and around 25 years on performance, 5 to 10 years on lithium batteries, and 2 to 5 years on the inverter, plus a workmanship guarantee on the installation itself. Your installer supplies and warranties the equipment directly. We make sure your installer is licensed and reviewed, and that the quote spells out brands, model numbers and what is and is not included.

Most Nairobi homes with a Kenya Power connection go hybrid. A hybrid system uses solar by day, stores extra in a battery for the evening, and falls back to the grid when needed, so outages stop affecting you. It is the practical sweet spot for the city.

A pure on-grid (grid-tied) system is cheapest because it has no battery, but it shuts off during a blackout, which defeats the point for most Nairobi buyers. Off-grid makes sense for farms, boreholes and sites in Kajiado or Machakos with weak or no grid, where the system carries the full load on its own. Your installer recommends the right type after seeing your site and hearing how you want to use the power.

After you send your details, a vetted installer contacts you to arrange a free site survey, usually within a day or two across Nairobi. They inspect the roof, check your distribution board and confirm your consumption, then send a written quote with the system spec and KES total.

Once you approve and pay the deposit, a standard home install takes one to three days on site for a typical 3kW to 5kW system. Larger commercial systems take longer. The installer handles mounting, wiring, commissioning and shows you how to read the app or monitor. Maintenance is light: an occasional panel clean (Nairobi dust and the dry-season haze matter more than rain) and a yearly check.