Grand Island, Florida represents a very good location for year-round solar energy generation, with consistently strong performance across all seasons in this Northern Sub Tropical climate zone.
Seasonal Solar Performance
The location demonstrates excellent solar energy potential throughout the year, with particularly outstanding performance during spring and summer months. Spring delivers the highest energy output at 6.69 kWh per day per kW of installed solar capacity, followed closely by summer at 5.91 kWh per day per kW. Even during the traditionally weaker months, autumn still produces a respectable 4.76 kWh per day per kW, while winter maintains solid output at 4.03 kWh per day per kW. This consistent performance across seasons makes Grand Island an ideal location for solar installations, as the system will generate substantial electricity year-round rather than having dramatic seasonal variations that might affect energy planning or financial returns.Optimal Panel Configuration
For fixed panel installations at Grand Island, the ideal tilt angle to maximize total year-round solar production is 26 degrees facing south. This angle is calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel positioning, and weighting these angles based on solar irradiance data while accounting for Earth's elliptical orbit around the sun.Local Factors Affecting Solar Production
Several environmental and weather factors in the Grand Island area can impact solar energy generation, though most can be effectively managed with proper installation practices:- Frequent thunderstorms and heavy rainfall: Florida's subtropical climate brings intense afternoon thunderstorms, particularly during summer months, which can temporarily reduce solar output and create maintenance challenges
- High humidity levels: The humid environment can lead to faster accumulation of dirt, pollen, and organic matter on solar panels
- Hurricane and severe weather risk: The location's vulnerability to tropical storms and hurricanes poses risks to solar installations
- Abundant vegetation and pollen: Florida's lush plant life generates significant pollen and organic debris that can coat panels
Preventative Measures for Optimal Performance
Several installation strategies can help maximize solar energy production despite these local challenges:- Robust mounting systems: Use hurricane-rated mounting hardware and follow enhanced wind load specifications to withstand severe weather events
- Regular cleaning schedules: Implement more frequent panel cleaning routines to remove pollen, organic matter, and humidity-related buildup
- Proper drainage design: Ensure installation allows for quick water runoff during heavy rainfall periods
- Strategic placement: Position panels away from large trees or areas with heavy pollen production when possible
- Quality inverters and electrical components: Use equipment rated for high humidity environments with appropriate weatherproofing
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 4253 locations across the United States. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in the United States by location
Solar output per kW of installed solar PV by season in Grand Island, Florida
Seasonal solar PV output for Latitude: 28.8887, Longitude: -81.7379 (Grand Island, Florida, United States), 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 26° South in Grand Island, Florida, United States
To maximize your solar PV system's energy output in Grand Island, Florida, United States (Lat/Long 28.8887, -81.7379) throughout the year, you should tilt your panels at an angle of 26° 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 Grand Island, Florida, United States
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 Grand Island, Florida, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 13° South in Summer | 34° South in Autumn | 44° South in Winter | 22° 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 Grand Island, Florida, United States
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 Grand Island, Florida, United States.
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 Grand Island, Florida, United States
Grand Island sits within the gently rolling terrain of central Florida, characterized by relatively flat topography with subtle elevation changes typical of the region's ancient marine terraces. The landscape around this location features low-lying areas interspersed with slight rises, creating a mosaic of wetlands, agricultural fields, and developed areas. The elevation varies modestly across the region, with most areas falling within a range that presents minimal challenges for large-scale development projects.
The surrounding topography includes numerous small lakes and ponds scattered throughout the area, which are characteristic of Florida's karst geology. These water bodies are formed by the underlying limestone bedrock and create natural depressions in the landscape. Between these aquatic features, the land tends to be relatively level with gentle slopes, making much of the terrain accessible for various types of development.
Wetland areas are prevalent throughout the region, including marshes, swamps, and seasonal flooding zones that follow natural drainage patterns. These environmentally sensitive areas are typically unsuitable for development due to regulatory protections and their important ecological functions. The drier upland areas, though still relatively flat, offer more promising opportunities for large-scale installations.
Optimal Areas for Solar Development
The most suitable locations for large-scale solar photovoltaic installations would be the well-drained upland areas that maintain consistent elevation above the seasonal high water table. These areas typically feature sandy soils with good drainage characteristics and minimal flooding risk. Agricultural lands that are currently used for pasture or row crops often present excellent opportunities, as they tend to be relatively flat, cleared of trees, and have established access routes.
Former agricultural areas or fallow farmland would be particularly well-suited for solar development, as these locations typically have minimal environmental constraints and existing infrastructure access. The slightly elevated areas between wetland complexes offer stable ground conditions and reduced environmental sensitivity compared to the lower-lying marshy regions.
Areas with minimal tree coverage and existing cleared land would require less site preparation, making them more economically attractive for solar installations. The relatively flat terrain throughout much of the region means that grading requirements would be minimal, reducing both costs and environmental impact. Proximity to existing electrical transmission infrastructure would also be a crucial factor in site selection, with areas near major power lines or substations offering significant advantages for grid connection.
The key considerations for optimal solar siting in this region would be avoiding wetland areas, selecting well-drained soils, ensuring adequate setbacks from water bodies, and choosing locations with minimal existing vegetation that would require removal. Areas with gentle south-facing slopes, while rare in this relatively flat terrain, would offer slight advantages for solar panel orientation and drainage.
United States solar PV Stats as a country
United States ranks 2nd in the world for cumulative solar PV capacity, with 95,209 total MW's of solar PV installed. This means that 3.40% of United States's total energy as a country comes from solar PV (that's 26th in the world). Each year United States is generating 289 Watts from solar PV per capita (United States ranks 15th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in United States?
Yes, there are several incentives for businesses wanting to install solar energy in the United States. These include federal tax credits, state and local rebates, net metering policies, and renewable energy certificates (RECs). Additionally, many states have enacted legislation that requires utilities to purchase a certain amount of electricity from renewable sources such as solar.
Do you have more up to date information than this on incentives towards solar PV projects in United States? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 15th of August 2025
Last Updated: Friday 15th of August 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.




