5.6 peak sun hours a day
Kitui receives 5.6 kWh/m² of solar energy a day, so each kilowatt of panels produces roughly 1,608 kWh a year. July is the weakest month; size essential loads to still work then.
Kitui County
Solar power in Kitui County.
What solar, battery backup and EV charging look like in Kitui: the county's solar resource month by month, what a typical system produces, local design points for a semi-arid climate, and a calculator using your KPLC bill.
Strong, reliable sun
Semi-arid counties get high solar energy for most of the year with short rainy seasons, which makes solar output predictable and payback faster.
Pumping and irrigation
Boreholes and irrigation are a common use for solar here. Storing water in a tank is often cheaper than storing electricity in batteries.
Solar water pumpingBackup where the grid is weak
Outages and long feeder lines are common outside towns. Size battery backup for the loads that must keep running.
Battery storage guideMonthly solar resource in Kitui
Long-term average daily solar energy on a horizontal surface and air temperature from NASA POWER, with the output of an example 5 kW system. Near the equator a low-tilt array receives close to the horizontal value.
| Month | Solar energy (kWh/m²/day) | Air temperature (°C) | 5 kW system output (kWh) |
|---|---|---|---|
| January | 5.92 | 24.4 | 716 |
| February | 6.22 | 25.4 | 679 |
| March | 6.26 | 25.7 | 757 |
| April | 5.78 | 24.7 | 676 |
| May | 5.38 | 23.6 | 650 |
| June | 4.80 | 22.5 | 561 |
| July | 4.79 | 21.9 | 579 |
| August | 5.09 | 22.4 | 615 |
| September | 5.88 | 23.6 | 688 |
| October | 6.10 | 24.3 | 738 |
| November | 5.79 | 23.8 | 677 |
| December | 5.77 | 23.9 | 697 |
| Year | 5.65 average | 23.9 average | 8,033 |
Estimate a system in Kitui
- Solar array
- 3.72 kWp 6 × 620 W panels, about 17 m² of roof
- Inverter
- 3 kW Hybrid, with battery
- Battery
- 6.0 kWh usable About 6.7 kWh nominal lithium (LiFePO₄)
- Estimated savings
- KES 12,457/month 83% of energy charges, KES 149,479 a year
- Solar generation
- 5,976 kWh/year 5,282 kWh used on site
- Simple payback
- Add a quote Before financing and maintenance
Show monthly table
| Month | Generated (kWh) | Used on site (kWh) | Savings |
|---|---|---|---|
| Jan | 532 | 456 | KES 12,908 |
| Feb | 505 | 412 | KES 11,659 |
| Mar | 563 | 456 | KES 12,908 |
| Apr | 503 | 441 | KES 12,491 |
| May | 484 | 456 | KES 12,908 |
| Jun | 418 | 405 | KES 11,464 |
| Jul | 430 | 418 | KES 11,818 |
| Aug | 458 | 443 | KES 12,527 |
| Sep | 512 | 441 | KES 12,491 |
| Oct | 549 | 456 | KES 12,908 |
| Nov | 504 | 441 | KES 12,491 |
| Dec | 519 | 456 | KES 12,908 |
Want this sized with real equipment, cable runs and supplier prices?
Get a detailed planEstimate only. It uses NASA POWER long-term modelled data for Kitui, a 78% performance ratio and reviewed KPLC all-in energy rates. Fixed and demand charges, shading, export credit and tariff changes are not included.
Frequently asked questions
How much sun does Kitui get for solar?
Kitui receives about 5.6 kWh of solar energy per square metre per day on average (5.6 peak sun hours). March is the strongest month at 6.3 and July the weakest at 4.8. Source: NASA POWER long-term modelled data for Kitui.
How much does a 5 kW solar system produce in Kitui?
About 8,033 kWh a year, or 22.0 kWh a day on average, assuming a 78% performance ratio for heat, dust, wiring and inverter losses. Output ranges from about 579 kWh in July to 757 kWh in March.
How many solar panels does a home in Kitui need?
A home using 300 kWh a month with half of it in daylight needs about 1.1 kW of solar for its daytime use, which is 2 panels of 620 W. Covering evening use as well needs a battery and a larger array. Use the calculator on this page with your own bill.
Can StimaPulse plan a solar, battery or EV charging project in Kitui?
Yes. StimaPulse sizes solar, storage and EV charging for homes, schools, businesses and fleets anywhere in Kitui County, using your bills or meter data, the site's own solar resource, real equipment and supplier quotes. A licensed engineer must verify the final design before installation.
Get a plan for your site.
Bring a utility bill, load list, fleet schedule or supplier quote. We will turn it into a sized, costed and comparable plan.