Suva, Central, Fiji is a fairly good location for generating solar energy throughout the year. This is because it's located in the Tropics where sunlight is consistent most of the time and seasons are more about wet and dry periods rather than extreme temperature changes. The amount of electricity you can expect to get from each kilowatt of installed solar power varies depending on the season: you'll get about 6.35 kilowatt-hours per day in summer and spring, but less in autumn (4.97 kWh/day) and winter (4.32 kWh/day).

So, if you're planning to install solar panels here, you might want to do it before summer or spring when they can generate more power due to longer daylight hours. Also, remember that your panels should be tilted at an angle of 16 degrees facing north for maximum efficiency.

However, there could be some local factors that may affect your solar production here. For example:

1) Rainy Season: Suva has a significant rainy season which could reduce sunlight exposure on your panels.

2) Cloud Cover: Even outside the rainy season, Suva often experiences heavy cloud cover which could lower your system’s performance.

3) Tropical Storms: Suva is susceptible to tropical storms which might damage your installation.

To overcome these challenges:

1) Waterproofing & Regular Cleaning: Make sure your system is waterproofed properly during installation and cleaned regularly especially after heavy rains or storms.

2) Professional Installation & Maintenance: Hire professionals who understand local weather patterns for installation and regular maintenance checks.

3) Strong Mounting System: Use robust mounting systems that can withstand high winds during tropical storms.

Remember these considerations will help ensure greater energy production from your solar setup at this location despite any potential setbacks caused by local 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 3 locations across Fiji. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Fiji by location

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

Seasonal solar PV output for Latitude: -18.1301, Longitude: 178.4098 (Suva, Fiji), 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 6.35kWh/day in Summer.

Average 4.97kWh/day in Autumn.

Average 4.32kWh/day in Winter.

Average 6.35kWh/day in Spring.

Ideally tilt fixed solar panels 16° North in Suva, Fiji

To maximize your solar PV system's energy output in Suva, Fiji (Lat/Long -18.1301, 178.4098) throughout the year, you should tilt your panels at an angle of 16° 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: -18.1301, Longitude: 178.4098, the ideal angle to tilt panels is 16° North

Seasonally adjusted solar panel tilt angles for Suva, Fiji

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 Suva, Fiji. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 16° 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 Suva, Fiji

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 Suva, Fiji.

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 Suva, Fiji

Suva, the capital of Fiji, is located on the southeast coast of the island of Viti Levu. The topography around Suva is quite diverse and includes coastal plains, hilly terrains, rainforests and mountainous regions. The city itself is perched on a peninsula reaching out into the sea.

The coastal plains around Suva are relatively flat and could potentially be suitable for large-scale solar PV installations. However, these areas are also densely populated and used for agriculture, which might limit their availability for solar development.

The hilly terrains offer less suitable ground conditions but could still be considered depending upon specific site characteristics such as slope angle and aspect.

Rainforests are not ideal locations for solar panels due to tree cover blocking sunlight. Similarly, mountainous regions can have challenging terrain making installation difficult.

For large-scale solar PV installations in this region it would also be important to consider factors like average sun hours per day (which is fairly high in Fiji), rainfall (Fiji has a tropical climate with heavy rains), cyclone risk (Fiji frequently experiences tropical cyclones) as well as local land use regulations and environmental considerations.

In general terms though without specific site surveys it's hard to pinpoint exact locations that would be most suited to large scale solar PV around Suva. It would require careful analysis of all these factors along with detailed geographical data.

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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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