Grand Island, Nebraska, located in the Northern Temperate Zone, presents a moderate potential for solar energy generation throughout the year. The city's geographical position at 40.9219° N latitude and -98.3448° W longitude offers varying levels of solar productivity across different seasons.
Seasonal Solar Output
Solar energy production in Grand Island fluctuates significantly between seasons. Summer stands out as the most productive period, with an average daily output of 7.25 kWh per kW of installed solar capacity. Spring follows as the second most productive season, yielding 5.55 kWh/day. Autumn sees a notable decrease in production, generating 3.91 kWh/day, while winter experiences the lowest output at 2.77 kWh/day.
Optimal Times for Solar Generation
The most favorable period for solar energy production in Grand Island spans from late spring through early fall. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency. The summer solstice in June marks the peak of solar potential, with gradually decreasing output as the year progresses towards winter.
Panel Tilt Optimization
To maximize year-round solar production in Grand Island, fixed solar panels should be installed at a tilt angle of 36 degrees facing south. This optimal angle takes into account the city's latitude and seasonal variations in sun position, ensuring the best overall performance throughout the year.
Environmental and Weather Considerations
Grand Island experiences some environmental and weather factors that could impact solar energy production. Snowfall during winter months may temporarily reduce panel efficiency, requiring occasional clearing to maintain optimal performance. Additionally, the region is prone to severe thunderstorms and occasional tornadoes, which could pose a risk to solar installations.
To mitigate these challenges, several preventative measures can be implemented:
- Install panels at a steeper angle to promote snow shedding
- Use durable mounting systems designed to withstand high winds
- Implement a regular maintenance schedule for panel cleaning and inspection
- Consider micro-inverter systems to minimize the impact of partial shading
By addressing these factors, solar installations in Grand Island can maintain higher energy production levels and increased resilience against local environmental challenges.
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° 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
Seasonal solar PV output for Latitude: 40.9219, Longitude: -98.3448 (Grand Island, 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 36° South in Grand Island, United States
To maximize your solar PV system's energy output in Grand Island, United States (Lat/Long 40.9219, -98.3448) throughout the year, you should tilt your panels at an angle of 36° 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, 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, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 25° South in Summer | 45° South in Autumn | 55° South in Winter | 34° 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, 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, 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, United States
The topography around Grand Island, Nebraska, located at latitude 40.9219 and longitude -98.3448, is characterized by its relatively flat landscape. This area is part of the Great Plains region, known for its expansive, gently rolling terrain. The land surrounding Grand Island is predominantly composed of fertile agricultural fields and prairies, with minimal elevation changes across the region. The Platte River, a major waterway in Nebraska, flows just south of Grand Island, creating a shallow valley that adds some subtle variation to the otherwise level landscape. This river valley has shaped the local topography over time, leaving behind rich alluvial soils and occasional sand bars along its course. While the area lacks significant hills or mountains, there are some minor undulations in the terrain, particularly as you move away from the river. These slight elevations are typically no more than a few dozen feet above the surrounding plains, offering minimal obstruction to the horizon in most directions.
Solar PV Potential
The flat, open nature of the landscape around Grand Island makes it well-suited for large-scale solar photovoltaic (PV) installations. Several factors contribute to the region's potential for solar energy development: Firstly, the abundance of agricultural land provides ample space for solar farms without significant topographical challenges. The flat terrain reduces the need for extensive land preparation, making it easier and more cost-effective to install large arrays of solar panels. Secondly, the lack of tall natural features or dense urban development means there are fewer obstructions to block sunlight. This allows for maximum sun exposure throughout the day, increasing the efficiency of solar panels. Areas to the south and east of Grand Island might be particularly well-suited for solar PV installations. These regions tend to have slightly higher elevations, which can help avoid potential flooding issues near the Platte River while still maintaining the advantageous flat terrain. However, it's important to note that while the topography is favorable, other factors such as local zoning laws, grid connectivity, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar projects in the area.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: Sunday 2nd of March 2025
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.
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Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
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