Every solar salesperson in Kenya has a favourite number: "cut your bill by 80%." The honest answer is that it depends entirely on two things — how much of your electricity you use during daylight hours, and how much usable roof space you have. Get those two numbers right and solar is the best investment most homes and businesses in Kenya can make. Get them wrong, or skip them entirely, and you end up with an oversized, overpriced system or an undersized one that disappoints from day one.
Start with your actual bill, not an average one
A load audit begins with your last three to six months of Kenya Power bills. We're looking for your average monthly consumption in kWh, your tariff band, and whether your usage swings seasonally — a guesthouse in a tourist area, for example, looks very different in July than in November. From there we build a picture of when you actually draw power: a household that's empty all day and busy every evening saves less from solar than a shop, office or factory that runs its heaviest loads between 9am and 5pm, squarely inside solar-producing hours.
Grid-tied systems: savings from month one
For a property that stays connected to Kenya Power and simply wants a lower bill, a grid-tied system offsets your daytime consumption directly. Any solar power you don't use can, depending on your metering arrangement, reduce your net draw further. The system pays down its own cost through the bill reduction, and because there are no batteries, the upfront investment is the lowest of the three solar system types.
Hybrid systems: savings plus resilience
Add batteries and a hybrid inverter, and the calculation changes. You still lower your monthly bill, but you also stop paying the hidden cost of load-shedding: spoiled stock in a fridge, downtime on a till system, a security system that goes dark at the worst possible time. For most Kenyan businesses we work with, it's this second benefit — not the bill reduction — that ultimately justifies the extra spend on batteries.
Why we won't quote a percentage over the phone
Anyone offering a fixed savings percentage before seeing your bill and your roof is guessing. Roof orientation, shading from neighbouring buildings, the age of your wiring and the appliances you actually run all change the number. That's why our first step on every solar enquiry is a free site visit and load audit — not a quote, an audit. You get a written estimate built from your own numbers before you decide on anything.
What to prepare before your site visit
- Your last three to six Kenya Power bills
- A rough list of your major appliances (fridges, pumps, AC units, machinery)
- Roof access, or photographs if you're enquiring remotely
- Whether backup power during outages matters to you, or bill reduction alone is the goal
Once we have those, sizing the system correctly — and giving you a number you can actually trust — takes us a day or two, not weeks.