How to Size Your Off-Grid Solar Power System in Kenya
September 14, 2025
TBB RIIOSUN – 6KVA-S Hybrid Solar Inverter in Kenya
September 14, 2025
Welcome to the Happy Solar System Knowledge Centre — your one-stop resource for understanding solar energy, how it works, and how it can benefit you in Kenya. Whether you’re a homeowner, a business owner, or managing an industrial facility, this guide simplifies everything you need to know about going solar.
What is Solar Power?
Solar power is energy from the sun that is converted into electricity using solar panels. It’s clean, renewable, and saves you money on electricity bills in the long run.
How Solar Power Systems Work
- Solar Panels capture sunlight.
- Inverters convert that sunlight into usable electricity.
- Solar Batteries store the electricity for use at night or during blackouts.
- Switchboards distribute the power to your lights, appliances, and sockets.
Solar Solutions for Homes in Kenya
Ideal for: Apartments, standalone houses, rural homes.
Benefits:
- Lower or eliminate your electricity bills
- Protection from Kenya Power blackouts
- Increase your home’s value
Popular Products:
- 540W Jinko Solar Panels
- Hybrid Inverters (Growatt, MUST)
- Lithium-ion Solar Batteries (5kWh to 15kWh)
Example Quote for a 3-bedroom home in Nairobi:
- 3kW Hybrid Solar System: Ksh 480,000 (inclusive of panels, inverter, lithium battery, and installation)
Commercial Solar Solutions
Ideal for: Schools, offices, apartments, hospitals, petrol stations.
Benefits:
- Reduce high monthly bills
- Lower operational costs
- Tax deductions on solar investments (as per Kenyan law)
Common Products:
- JA Solar 550W panels
- String Inverters (Huawei, SMA)
- Lithium Battery Banks (10kWh to 100kWh)
Real Example:
- A hotel in Malindi reduced their monthly KPLC bill from Ksh 220,000 to Ksh 35,000 after switching to solar.
Industrial Solar Systems
Ideal for: Factories, agro-processors, large warehouses, data centres.
Benefits:
- Reduce reliance on diesel generators
- Maintain constant power for machines
- Excellent ROI (Return on Investment) within 3–5 years
Installation Capacity:
- From 20kW to over 500kW depending on power consumption
Solar Components Explained
1. Solar Panels
- Convert sunlight into electricity
- Last 25–30 years with low maintenance
2. Inverters
- Convert DC power from the panels to AC power for use
- Available as Hybrid, Grid-Tied, or Off-Grid inverters
3. Solar Batteries (especially Lithium)
- Store energy for later use
- Lithium batteries last longer, are lighter, charge faster, and are safer than traditional lead-acid batteries
4. Solar Fuses & Disconnects
- Ensure system safety and protect against surges or overloads
5. SPDs (Surge Protection Devices)
- Protect your equipment from lightning strikes and power surges
Frequently Asked Questions (FAQs)
Q1: Can I use solar power and still stay connected to Kenya Power? Yes. That’s called a hybrid system. It gives you the best of both worlds — use solar power during the day, and switch to KPLC when needed.
Q2: Is solar power reliable during rainy or cloudy days? Yes. Solar systems store power in batteries and still work even with reduced sunlight.
Q3: How long does solar installation take? Most home systems are completed in 1–2 days. Commercial or industrial installations may take up to 2 weeks.
Q4: Are there warranties? Yes. All our products come with manufacturer warranties of 5 to 25 years.
Q5: Can I upgrade my system later? Absolutely! You can always add more panels, batteries, or upgrade the inverter later.
Solar Power Solutions in Malindi, Mombasa, Kisumu & Beyond
We serve clients across Kenya, including remote towns and off-grid areas. Happy Solar System has installed systems in:
- Malindi (resorts and apartments)
- Eldoret (dairy farms)
- Kisumu (rural health centres)
- Nairobi (estates and offices)
Solar Carport Solutions
Did you know your parking lot can generate electricity? Our solar carports use solar panels to provide shade and power at the same time — perfect for estates, malls, and office blocks.
Client Testimonials
“I used to pay over Ksh 18,000 per month in electricity. After Happy Solar installed my 5kW system, I now pay under Ksh 2,000. Absolutely life-changing.” – James Mwangi, Nairobi
“Our factory in Thika runs smoothly even when KPLC is down. The solar system with lithium batteries has saved us from costly downtimes.” – Grace Otieno, Factory Manager
“Reliable service and great after-sales support. The team came back to upgrade our battery bank without charging extra labor.” – Yusuf Mohamed, Malindi
Talk to Us Today!
- Phone/WhatsApp: 0722 708034 / 0720 456534
- Email: info@happysolar.co.ke / sales@happysolar.co.ke
- Website: www.happysolar.co.ke
Free Site Survey & Quotation
Interested in switching to solar? We’ll visit your site for free and recommend the perfect solution.
Request a Quote Now: Call/Text/WhatsApp 0741 163020 / 0722 708034
Let’s power Kenya together — one rooftop at a time.
Happy Solar System – Clean, Reliable, Affordable Solar Energy for Every Kenyan
