Solar Energy Potential in Gillette, Wyoming
Gillette, Wyoming, located in the Northern Temperate Zone, presents a mixed picture for solar energy generation. The city experiences significant seasonal variations in solar output, which affects its overall suitability for year-round solar power production. During summer, Gillette sees its peak solar performance, with an impressive 7.59 kWh per day for each kilowatt of installed solar capacity. This makes the summer months ideal for solar energy generation, with long days and typically clear skies contributing to high output. Spring follows as the second-best season, producing 5.63 kWh per day. This season offers a good balance of increasing daylight hours and moderate temperatures, making it another favorable time for solar energy production. Autumn sees a significant drop in solar output, generating 3.90 kWh per day. While still productive, the shorter days and potential for increased cloud cover begin to impact solar efficiency. Winter presents the biggest challenge for solar energy in Gillette, with production dropping to just 2.16 kWh per day. The combination of shorter days, lower sun angles, and potential snow cover significantly reduces solar panel efficiency during this season.Optimizing Solar Panel Installation
To maximize year-round solar energy production in Gillette, fixed solar panels should be installed at a tilt angle of 38 degrees facing south. This angle is calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the city's latitude and seasonal sun positions.Environmental and Weather Considerations
Several factors can impact solar production in Gillette:- Snow accumulation in winter can significantly reduce panel efficiency. Regular snow removal or the installation of panels at a steeper angle can help mitigate this issue.
- Dust and pollen from the surrounding prairies may accumulate on panels, reducing their effectiveness. Implementing a regular cleaning schedule can help maintain optimal performance.
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 Gillette
Seasonal solar PV output for Latitude: 43.9282, Longitude: -105.5492 (Gillette, 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 38° South in Gillette, United States
To maximize your solar PV system's energy output in Gillette, United States (Lat/Long 43.9282, -105.5492) throughout the year, you should tilt your panels at an angle of 38° 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 Gillette, 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 Gillette, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 38° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 27° South in Summer | 48° South in Autumn | 59° South in Winter | 36° 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 Gillette, 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 Gillette, 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 Gillette, United States
The landscape surrounding Gillette, Wyoming, is characterized by gently rolling prairies and expansive grasslands typical of the Great Plains region. This area, located in northeastern Wyoming, features a mix of open rangeland and low hills, with occasional buttes and mesas rising from the otherwise relatively flat terrain. The topography is shaped by centuries of wind and water erosion, resulting in a subtly varied landscape that stretches for miles in all directions. To the west of Gillette, the terrain gradually becomes more rugged as it transitions into the eastern foothills of the Powder River Basin. This area is known for its coal deposits and features a combination of natural grasslands and areas altered by mining activities. East of the city, the land remains predominantly flat, with scattered patches of sagebrush and short grasses dominating the vista.
Potential for Large-Scale Solar PV
When considering areas near Gillette for large-scale solar photovoltaic (PV) installations, several factors come into play. The most suitable locations would be those with ample flat or gently sloping land, good sun exposure, and proximity to existing power infrastructure. The vast expanses of open rangeland to the east and southeast of Gillette present promising opportunities for solar development. These areas offer large, unobstructed spaces with minimal shading from natural features or man-made structures. The gentle topography in this direction would require less site preparation, potentially reducing installation costs. Another potentially suitable area lies to the south of Gillette, where the landscape remains relatively flat and open. This region benefits from good solar irradiance levels and could accommodate large arrays of solar panels without significant topographical challenges. It's worth noting that while the area west of Gillette, towards the Powder River Basin, has ample open space, the presence of coal mining operations and potential land use conflicts might make this area less ideal for solar development. However, there may be opportunities to repurpose former mining sites for solar installations, provided they meet the necessary environmental and structural requirements. In all cases, detailed site assessments would be necessary to determine the most suitable locations for large-scale solar PV projects. Factors such as land ownership, environmental considerations, and access to transmission lines would need to be carefully evaluated alongside the topographical advantages of each potential site.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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 28th of December 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.




