The location at Rubavu, Western Province, Rwanda is quite ideal for year-round solar energy generation. This is due to its location in the tropics where sunlight is consistent throughout most of the year. The seasons here are more characterized by wet and dry periods rather than drastic temperature changes.

In terms of electricity output per kilowatt (kW) of installed solar, you can expect 4.92 kilowatt-hours (kWh) per day in summer, 5.26 kWh/day in autumn, 5.29 kWh/day in winter, and 5.30 kWh/day in spring from each kW of installed solar power.

This means that although there's slightly less energy produced during the summer season compared to other seasons due to rainy periods perhaps reducing sunlight hours; overall, the difference across all seasons isn't too significant which makes it a suitable place for generating solar power all year round.

For fixed panel installations at this location, tilting panels at an angle of 2 degrees north would be ideal as it would maximize total yearly production from your solar photovoltaic (PV) system.

However, like any other place on earth there could be local factors that might affect solar production significantly such as heavy rainfall or dust storms which could cover up your panels and reduce their efficiency.

To prevent this from happening and ensuring greater energy production:
1) Regular cleaning and maintenance should be performed especially after heavy rainfalls or dust storms.
2) If possible installing automatic tracking systems that adjust panel angles according to sun's position can also help increase efficiency.
3) Installing panels with anti-reflective coating can also improve light absorption hence increasing output even under cloudy conditions.
4) Protective measures against potential damage from extreme weather events should also be considered during installation process such as securing them firmly so they withstand strong winds etc.

Overall though based on given data Rubavu seems like a promising site for installing a PV system thanks to its tropical climate and consistent sunlight exposure.

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 6 locations across Rwanda. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Rwanda by location

Solar output per kW of installed solar PV by season in Rubavu

Seasonal solar PV output for Latitude: -1.6818, Longitude: 29.293 (Rubavu, Rwanda), 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:

Average 4.92kWh/day in Summer.

Average 5.26kWh/day in Autumn.

Average 5.29kWh/day in Winter.

Average 5.30kWh/day in Spring.

Ideally tilt fixed solar panels 2° North in Rubavu, Rwanda

To maximize your solar PV system's energy output in Rubavu, Rwanda (Lat/Long -1.6818, 29.293) throughout the year, you should tilt your panels at an angle of 2° North 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.

At Latitude: -1.6818, Longitude: 29.293, the ideal angle to tilt panels is 2° North

Seasonally adjusted solar panel tilt angles for Rubavu, Rwanda

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 Rubavu, Rwanda. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 2° North tilt angle throughout the year.

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 Rubavu, Rwanda

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 Rubavu, Rwanda.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Rubavu, Rwanda

Rubavu, Rwanda is located in the western part of the country and is characterized by hilly and mountainous terrain. It lies near Lake Kivu, one of Africa's great lakes. The region has a mix of grassland, farmland, and forested areas.

For large-scale solar PV installations, flat or gently sloping areas are typically preferred as they require less site preparation and can accommodate more panels per unit area. However, modern solar technology can also be installed on hilly terrains with appropriate design considerations.

In Rubavu's case, potential suitable locations for large-scale solar PV might include:

1. Unused or non-productive farmlands: These usually have good sun exposure and would not compete with food production.
2. Near existing infrastructure: Areas close to roads or power lines would minimize additional infrastructure costs.
3. On water bodies like Lake Kivu: Floating solar farms could be an option if land availability is a constraint.

It should be noted that any proposed location will need to undergo detailed feasibility studies considering factors such as local climate conditions (solar irradiance), land ownership issues, environmental impact assessments etc., before it can be deemed suitable for large scale solar PV installation.

As Rubavu has a tropical savannah climate with substantial sunlight throughout the year (except during the short rainy seasons), it could potentially benefit from harnessing this renewable energy source given proper planning and execution.

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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.

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