Sterling, Colorado, located in the Northern Temperate Zone, presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.
Seasonal Solar Performance
The solar energy output at Sterling shows a typical continental climate pattern with strong seasonal differences. Summer delivers the highest production at 7.66 kWh per day per installed kW, making it an excellent time for solar generation. Spring follows as the second-best season with 5.83 kWh per day per kW, offering good solar potential as daylight hours increase. Autumn production drops to 4.53 kWh per day per kW, which is still reasonable for energy generation. Winter presents the biggest challenge with only 2.89 kWh per day per kW, representing less than 40% of summer production levels. For maximum year-round energy production from a fixed-panel installation at Sterling, panels should be tilted at 36 degrees facing south. This angle is calculated to optimize total annual solar output by accounting for the sun's changing position throughout the year and weighting for actual solar potential at this latitude.Local Factors Affecting Solar Production
Several environmental and weather factors in Sterling, Colorado can significantly impact solar panel performance:- Snow accumulation: Winter snow can completely block solar panels, eliminating energy production until cleared
- Hail storms: Colorado's Front Range region experiences frequent hail that can damage solar panels
- High winds: The open prairie location exposes installations to strong winds that can stress mounting systems
- Dust and agricultural particles: The rural agricultural setting means panels can accumulate dust, pollen, and farm debris
- Temperature extremes: Hot summers and cold winters create thermal stress on panels and reduce efficiency
Preventative Measures for Optimal Performance
To maximize solar energy production despite these challenges, several installation strategies prove effective:- Steep panel angles: Installing panels at steeper angles than the calculated 36-degree optimum can help snow slide off more easily
- Impact-resistant panels: Choose panels rated for hail impact to prevent weather damage
- Robust mounting systems: Use heavy-duty mounting hardware designed for high wind loads
- Easy access design: Plan installations for safe cleaning and snow removal access
- Regular maintenance scheduling: Establish routine cleaning and inspection programs
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 Sterling, Colorado
Seasonal solar PV output for Latitude: 40.6306, Longitude: -103.2212 (Sterling, Colorado, 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 Sterling, Colorado, United States
To maximize your solar PV system's energy output in Sterling, Colorado, United States (Lat/Long 40.6306, -103.2212) 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 Sterling, Colorado, 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 Sterling, Colorado, 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 |
|---|---|---|---|
| 24° South in Summer | 45° South in Autumn | 56° South in Winter | 33° 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 Sterling, Colorado, 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 Sterling, Colorado, 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 Sterling, Colorado, United States
Topography Around Sterling, Colorado
Sterling sits in the heart of the Great Plains region of northeastern Colorado, characterized by predominantly flat to gently rolling terrain. The landscape around this agricultural community consists of expansive prairie lands that stretch toward the horizon in all directions, with minimal elevation changes across the immediate area. The terrain gradually slopes downward from west to east, following the natural drainage patterns that eventually lead toward the South Platte River system.
The region features wide open spaces with few natural obstructions such as hills, ridges, or significant vegetation that might create shadows or block solar access. Agricultural fields dominate the surrounding countryside, interspersed with ranch lands and scattered farm buildings. The relatively uniform topography means that most areas maintain consistent exposure to sunlight throughout the day, with minimal shading from geographical features.
Small creek beds and irrigation channels crisscross the landscape, creating subtle depressions in the otherwise level terrain. These waterways generally run in east-west or north-south orientations, following section lines established during the original land surveys. The overall elevation in the Sterling area remains fairly constant, with only modest undulations across the agricultural plains.
Optimal Areas for Large-Scale Solar Development
The flat, open agricultural lands surrounding Sterling present excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas lie on the gently sloping plains to the south and southwest of the city, where the terrain offers optimal southern exposure while remaining relatively level for efficient panel installation and maintenance access.
Areas with minimal existing infrastructure but reasonable proximity to electrical transmission lines would be particularly advantageous for solar development. The agricultural fields that extend for miles in multiple directions from Sterling provide ample space for utility-scale solar farms without competing significantly with residential or commercial development.
The eastern and southeastern portions of the region also show strong potential, benefiting from the same flat topography and unobstructed sky access. These areas would allow for efficient panel layouts using standard mounting systems, as the gentle terrain requires minimal grading or site preparation compared to more mountainous regions.
Land parcels situated away from the immediate creek beds and irrigation infrastructure would be preferable, as they avoid potential drainage issues while still maintaining the favorable topographical characteristics. The consistent elevation and minimal slope variations throughout the area mean that most locations within a reasonable distance of Sterling could accommodate large solar installations with similar effectiveness from a topographical standpoint.
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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 1st of August 2025
Last Updated: Friday 8th 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.




