Solar Installation in Kenya

Prices move with panel brand, battery chemistry and roof complexity, but these are realistic 2026 market figures to plan around. A single 300W mono panel runs about KES 16,000, and a 550W panel around KES 28,000. A 5kWh lithium (LiFePO4) battery sits near KES 180,000, while an older lead-acid bank of similar usable capacity is cheaper upfront but lasts a third as long.

For a full supplied-and-installed system, a small backup setup starts from KES 120,000. A popular 3kW hybrid system for a typical three-bedroom home starts from KES 350,000. A 5kW hybrid system with a 5kWh lithium battery, the most common middle-class choice, comes in from KES 650,000 fully fitted. A 10kW system for a large home, farm or small business starts from KES 1,200,000 depending on battery sizing.

These figures include panels, inverter, mounting, cabling, protection and labour. Where a quote is far below these, ask what is being left out: undersized cabling, no surge protection and grey-market inverters are the usual corners cut. Your installer gives you a firm price after the survey, since roof type and battery autonomy change the final number more than anything else.

Sizing starts with your power use, not a guess. A good installer asks for your last three KPLC bills, lists your heavy loads (fridge, pump, iron, water heater) and notes which of those must run during a blackout. From that they calculate daily kWh and design the array and battery around it.

As a rough guide: a 3kW system suits a home using 8 to 12 units a day with lights, TV, fridge and phones. A 5kW system covers 15 to 25 units a day and can carry an iron or borehole pump in short bursts. Beyond 25 units a day, or for welding, large pumps or cold rooms, you are into 8kW and above.

The mistake we see most is buying for today and outgrowing it in a year. If you plan to add an inverter aircon or an EV charger, tell the installer now so the inverter and roof layout leave room. A properly licensed installer will also factor in Nairobi and Central region cloud cover, which trims output in the long rains around April and over July and August.

Home systems are usually rooftop hybrid setups in Nairobi, Kiambu, Nakuru, Mombasa and the wider suburbs, designed for daily savings plus blackout backup. Solar installation in Nairobi often involves flat-roof or mabati mounting and tighter wayleave rules, so local experience matters.

Farm installations lean on solar water pumping and cold storage. A solar borehole pump removes a recurring diesel or KPLC bill entirely, and dairy or horticulture operations often pair panels with a battery to run a cold room overnight. Commercial systems for shops, schools, hotels and SACCOs are typically grid-tied or hybrid, sized to shave the expensive daytime peak off the bill, sometimes with net metering where the DNO allows it.

Whatever the site, the installer we match you with handles the structural check, the EPRA-compliant wiring and the sign-off. You get a system designed for that specific roof and load, not a one-size package.

EPRA (the Energy and Petroleum Regulatory Authority) licenses solar technicians and contractors in Kenya. An unlicensed install can void your equipment warranty, fail an insurance claim after a fire, and is illegal for grid-tied work. Every installer in our network is EPRA-licensed and reviewed, which is the single biggest reason to match through us rather than pick a number off a poster.

Expect these warranty terms from a reputable installer: solar panels carry a 10 to 12 year product warranty and a 25-year performance warranty, inverters 5 to 10 years, lithium batteries 5 to 10 years (or a cycle count), and workmanship typically 1 to 2 years. Get all of these in writing before paying the balance.

Ask for the installer's EPRA licence number, proof the panels and inverter are genuine, and a maintenance plan. Panels need little more than occasional cleaning, but dirty panels can lose up to 30 percent of their output, so a simple wash schedule protects your investment.