Solar PV Analysis of Freetown, Sierra Leone
Freetown, Sierra Leone, which is located in the Tropics, could be a good location for generating solar energy throughout the year due to its consistent sunlight. The amount of electricity you can expect to generate from each kilowatt (kW) of solar panels installed varies by season: 4.58 kilowatt-hours (kWh) per day in summer, 5.65 kWh/day in autumn, 5.77 kWh/day in winter and 6.16 kWh/day in spring.
This means that while you can generate energy all year round with solar panels at this location, some seasons are better than others for generating more power - specifically spring and winter seem to offer slightly higher output.
When installing your solar panels here it's recommended that they're tilted at an angle of 9 degrees towards the South for maximum efficiency across the entire year.
However there might be some local factors that could potentially decrease your solar production. For example Freetown experiences a rainy season which may reduce sunlight exposure on certain days or weeks but overall shouldn't have too significant an impact over the course of a whole year as these periods are balanced out by long stretches of strong sunshine during other parts of the year.
To help deal with this issue and ensure greater energy production from your installation despite these weather conditions; one preventative measure might be ensuring any rainwater can easily run off your panels so they remain clean and efficient even after heavy rainfall events - dirty or obscured panels will not perform as well as clean ones! You may also want to consider having backup power options available for those less sunny periods such as batteries charged during peak sun times or even a generator if necessary.
Note: The Tropics are located between 23.5° North and -23.5° South of the equator.
Solar output per kW of installed solar PV by season in Freetown
Seasonal solar PV output for Latitude: 8.4870803, Longitude: -13.2354918 (Freetown, Sierra Leone), 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 9° South in Freetown, Sierra Leone
To maximize your solar PV system's energy output in Freetown, Sierra Leone (Lat/Long 8.4870803, -13.2354918) throughout the year, you should tilt your panels at an angle of 9° South 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 Freetown, Sierra Leone
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 Freetown, Sierra Leone. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 8° North in Summer | 15° South in Autumn | 24° South in Winter | 2° 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 Freetown, Sierra Leone
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 Freetown, Sierra Leone.
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 Freetown, Sierra Leone
Freetown, the capital city of Sierra Leone, is located on a peninsula on the southwestern coast of the country. The topography around Freetown is characterized by coastal plains that rise to hills and mountains towards the interior. The city itself sits in a large natural harbor.
The region experiences a tropical climate with two seasons: a dry season from November to April and a rainy season from May to October. However, even during the rainy season, there are often several hours of sunshine per day.
Regarding solar PV installations, areas with flat terrain or gentle slopes would be most suitable as they allow for easier installation and maintenance. It's also important that these areas receive high levels of sunlight year-round.
In terms of specific locations near Freetown that might be suitable for large-scale solar PV projects:
1) Coastal Plains: The flat coastal plains surrounding Freetown could potentially accommodate large-scale solar farms. These areas typically receive plenty of sunlight and have relatively easy access for construction and maintenance activities.
2) Inland Areas: Some inland regions near Freetown also have potential due to their relatively flat terrain and good sun exposure. However, accessibility may be more challenging compared to coastal regions.
3) Rooftop Solar: Given its urban nature, another option could be rooftop solar installations within Freetown itself. This would take advantage of existing infrastructure while avoiding any potential land use conflicts in rural or agricultural areas.
It should be noted that any decision regarding location should consider factors such as local weather patterns (including cloud cover), proximity to electrical grids or demand centers, environmental impacts (such as wildlife habitats), land ownership issues etc., which require detailed site-specific studies.
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 12th of June 2024
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.
