Solar PV Analysis of Westminster, Colorado, United States
Westminster, Colorado, situated in the Northern Temperate Zone of the United States, is a decent place for solar energy generation. The amount of electricity you can get from solar panels varies throughout the year. In summer, they'll produce about 7.11 kilowatt-hours (kWh) per day for each kilowatt (kW) of solar panels installed. This drops to 4.56 kWh/day in autumn and further to 3.24 kWh/day in winter due to shorter daylight hours and lower sun position in the sky during these seasons. Spring sees an improvement with around 6.02 kWh/day per kW.
The best time for generating solar energy at this location is clearly summer when sunshine is abundant followed by springtime which also provides good production levels due to longer daylight hours compared to other seasons.
If you're installing fixed panel solar PV here, it's recommended that you tilt your panels at an angle of 36 degrees facing southwards; this will maximize their exposure to sunlight throughout the year and thus boost overall energy production.
However, there are several factors that could potentially hinder solar production at this location such as weather conditions and local topography amongst others:
1) Weather: Westminster experiences snowfall during winter months which could cover up your panels reducing their efficiency or even stopping power generation altogether until cleared off.
Preventative Measure: Install a snow guard or similar device designed to prevent snow accumulation on your panels.
2) Topography: If there are mountains or tall buildings nearby blocking sunlight especially during morning or evening hours when sun is low on horizon then it might reduce total daily output.
Preventative Measure: Carefully select installation site ensuring clear unobstructed path between sun and your panels throughout the day.
3) Dust & Debris: Over time dust particles can accumulate on surface of your panels reducing their efficiency.
Preventative Measure: Regular cleaning maintenance should be done especially after windy days or sandstorms.
4) Temperature: Solar panels work best in cooler temperatures. High summer temperatures can actually reduce their efficiency.
Preventative Measure: There's not much you can do about ambient temperature but choosing high-quality panels that are more resistant to temperature fluctuations might help.
In summary, while Westminster is a pretty good place for solar power generation, you'll need to take into account local weather and topographical conditions and maintain your system properly in order to get the most out of it.
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 Westminster, Colorado
Seasonal solar PV output for Latitude: 39.8259, Longitude: -105.0392 (Westminster, 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 Westminster, Colorado, United States
To maximize your solar PV system's energy output in Westminster, Colorado, United States (Lat/Long 39.8259, -105.0392) 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 Westminster, 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 Westminster, 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 | 44° South in Autumn | 55° 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 Westminster, 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 Westminster, 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 Westminster, Colorado, United States
Westminster, United States is located in the state of Colorado. The topography of this area is characterized by a mix of flat plains and hilly terrain, as it lies on the eastern foothills of the Rocky Mountains. It has an elevation around 5,384 feet above sea level.
The region experiences a semi-arid climate with plenty of sunshine throughout the year which makes it suitable for solar PV installations. However, the choice for large-scale solar PV would depend on various factors such as land availability and use, local regulations, grid connectivity and more.
Flat plains areas would be most suited for large-scale solar PV installations due to ease of installation and maintenance. Specifically within Westminster city limits might not be optimal due to urban development but nearby open areas or farmlands could be potential sites.
Additionally, considering Colorado's diverse topography, hill slopes facing south could also be considered for installing solar panels as they receive good sunlight exposure throughout the day. This can maximize energy production from the photovoltaic system.
However, one must also consider other factors like environmental impact assessments and potential snowfall in winter that may affect panel efficiency when choosing locations for large scale solar PV installations in this region.
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: Monday 4th of March 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.
