Solar PV Analysis of Nairobi, Kenya
Nairobi, Kenya is a highly suitable location for solar PV power generation. The average energy produced per kW of installed solar (kWh/day) in each season is as follows: 6.54 in Summer, 6.56 in Autumn, 5.26 in Winter, and 6.55 in Spring. This data suggests that Summer and Autumn are the most productive seasons for solar power generation while Winter sees the least energy production.
Located within the tropics, Nairobi experiences consistent sunlight throughout most of the year with alternating wet and dry seasons; however, there are no extreme weather conditions that would significantly impede solar PV power generation at this location.
As for the ideal angle to tilt panels for a fixed panel installation at this latitude (-1.2841), it is recommended to set them at 0 degrees to maximize energy production throughout the year.
In terms of environmental or topographical factors that could impact solar production in Nairobi, potential issues may include shading from buildings or trees and dust accumulation on panels due to local soil conditions. To mitigate these factors during installation:
1) Ensure proper site selection by avoiding areas with significant shading from nearby structures or vegetation.
2) Regularly clean and maintain panels to remove dust buildup which can reduce their efficiency over time.
By considering these factors during installation and maintenance processes, greater energy production can be achieved from solar systems located within Nairobi's favorable climate conditions.
Note: The Tropics are located between 23.5° North and -23.5° South of the equator.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 13 locations across Kenya. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Kenya by location
Solar output per kW of installed solar PV by season in Nairobi
Seasonal solar PV output for Latitude: -1.2841, Longitude: 36.8155 (Nairobi, Kenya), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
Ideally tilt fixed solar panels 0° in Nairobi, Kenya
To maximize your solar PV system's energy output in Nairobi, Kenya (Lat/Long -1.2841, 36.8155) throughout the year, you should tilt your panels at an angle of 0° for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Nairobi, Kenya
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Nairobi, Kenya. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 0° tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 14° South in Summer | 7° North in Autumn | 17° North in Winter | 5° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Nairobi, Kenya
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Nairobi, Kenya.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Nairobi, Kenya
Nairobi, Kenya is located in the African Great Rift Valley, which is a large geographical depression extending from northern Syria to central Mozambique. The topography of the area around Nairobi consists of rolling hills and open plains with an average elevation of 1,660 meters (5,450 feet). Areas to the west and south of Nairobi feature higher terrain than those to the east and north.
The areas most suited for large-scale solar PV installations near Nairobi are those that have flat land with good access to sunlight. The best sites would be on open plains or gently sloping hillsides with minimal shade from trees or other obstructions. Additionally, these sites should also have easy access for maintenance vehicles and personnel.
Kenya solar PV Stats as a country
Kenya ranks 77th in the world for cumulative solar PV capacity, with 147 total MW's of solar PV installed. Each year Kenya is generating 3 Watts from solar PV per capita (Kenya ranks 85th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Kenya?
Yes, there are several incentives for businesses wanting to install solar energy in Kenya. These include the Feed-in Tariff (FiT) program, which provides a guaranteed price for electricity generated from renewable sources; the Renewable Energy Fund, which provides grants and loans to support renewable energy projects; and the Solar Home System Program, which offers subsidies for households to purchase solar home systems. Additionally, businesses may be eligible for tax credits or other financial incentives from local governments.
Do you have more up to date information than this on incentives towards solar PV projects in Kenya? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 1st of June 2023
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.
