Size your solar system.
Get the right answer.
Kenya's only free, independent solar sizing calculator. Enter your KPLC bill or select your appliances — we calculate the panels, batteries, and inverter you actually need.
How big a solar system do you need?
Choose your calculation method. All figures are based on Kenyan market conditions, 5 peak sun hours per day, and LiFePO4 battery storage at 80% depth of discharge.
Enter your average monthly KPLC electricity bill and we will estimate your energy demand and suitable solar system size. Best for a quick indication — use the appliance calculator for a more accurate result.
Results are estimates only. Book a free consultation for a professional design.
Add your appliances one by one. Enter how many hours per day you use them in total, and how many of those hours are at night (when solar panels are not generating). For appliances like fridges that run continuously, enter 24 hours.
| Appliance | Wattage | Qty | Daily hrs | Daily Wh | |
|---|---|---|---|---|---|
| No appliances added yet. Use the form above to add appliances. | |||||
Add at least one appliance to calculate. Results are estimates based on Kenyan market conditions.
Your Solar System Estimate
Based on Kenyan market conditions • 5 peak sun hours/day • LiFePO4 batteries at 80% DoD
ⓘ These are indicative estimates only. Actual system size depends on your specific usage patterns, roof space, cable runs, product quality, and site conditions. SheSpeaksSolar recommends a professional system design before purchasing any equipment. All calculations assume 5 peak sun hours per day (Kenya average), LiFePO4 batteries at 80% DoD, and a system efficiency factor of 80%.
Get a professional quote based on these results
Send your results directly to SheSpeaksSolar on WhatsApp or email. We respond within 1 business day.
Kenya Solar Industry Resources
Key regulatory documents, policy papers, and SheSpeaksSolar guides — free to download. Everything a homeowner or solar professional needs to make informed decisions in the Kenyan market.
The primary legislation governing Kenya's energy sector. Every solar professional and project developer should be familiar with this Act — it establishes EPRA, defines licensing requirements, and governs energy generation in Kenya.
Download PDF →The EPRA licensing framework for solar PV installation professionals in Kenya. Covers T1, T2, and T3 licensing tiers, application requirements, and compliance obligations for registered solar installers.
Visit EPRA Website →Kenya Power's net metering framework for solar customers feeding electricity into the grid. Covers eligibility, application process, technical requirements, and how credits are applied to your electricity bill.
Visit KPLC Website →SheSpeaksSolar's free guide to solar system sizing for Kenyan homeowners and businesses. Includes the panel sizing formula, battery backup calculation, and 10 questions to ask any installer before paying a deposit.
Get Free Download →The international standard for solar PV system documentation, commissioning tests, and handover requirements. Outlines what documentation every solar installer must provide to the client after installation in Kenya.
IEC Standards Portal →A plain-English guide to the EPRA T1, T2, and T3 licensing process for solar professionals in Kenya. Covers what each tier allows, how to apply, what documentation you need, and how our EPRA Exam Prep course prepares you.
EPRA Exam Prep Course →Get the Solar Sizing Starter Guide — free.
The formulas, the red flags, and the 10 questions to ask before you spend a shilling on solar in Kenya.