Suitland, Maryland, located at latitude 38.8418 and longitude -76.9189 in the Northern Temperate Zone, offers variable conditions for solar PV energy generation throughout the year. The location experiences significant seasonal fluctuations in solar energy production, with the highest output during summer months and considerably lower production in winter.
Seasonal Solar Production
Solar panels in Suitland generate their peak electricity during summer, producing an average of 6.67 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season, with daily generation averaging 5.91 kWh per kilowatt. Autumn sees a moderate decline to 4.02 kWh per day, while winter production drops significantly to just 2.42 kWh per day per kilowatt of installed capacity.
This pattern creates nearly a threefold difference between the best and worst seasons, with summer producing approximately 175% more energy than winter. The substantial seasonal variation means annual production is heavily weighted toward the warmer months from late spring through early fall.
Optimal Panel Installation
For fixed solar panel installations in Suitland, the ideal tilt angle to maximize year-round energy production is 34 degrees facing South. This carefully calculated angle optimizes the annual solar harvest by balancing seasonal variations in the sun's path across the sky.
Environmental and Weather Considerations
Several environmental factors in Suitland may impact solar production:
- Snowfall during winter months can temporarily cover panels, reducing output during an already low-production season
- Deciduous tree coverage, common in Maryland, may cause seasonal shading issues
- The region's humidity and precipitation patterns can create cloud cover that reduces solar irradiance
- Occasional severe weather events including hurricanes and strong storms may temporarily impact system performance
To mitigate these challenges, solar installations in Suitland should incorporate several preventative measures. Panels should be installed with sufficient elevation and tilt to allow snow to slide off naturally. Regular tree maintenance around the installation area can prevent shading issues. Using microinverters or power optimizers helps minimize production losses when partial shading occurs. Additionally, selecting high-quality panels with anti-soiling glass coatings will reduce maintenance needs and improve performance in humid conditions.
Overall, while Suitland isn't ideal for year-round solar production due to its significant winter decline, the location still offers excellent generation potential during three seasons of the year, making solar PV a viable renewable energy option with proper system design and installation practices.
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 Suitland
Seasonal solar PV output for Latitude: 38.8418, Longitude: -76.9189 (Suitland, 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 34° South in Suitland, United States
To maximize your solar PV system's energy output in Suitland, United States (Lat/Long 38.8418, -76.9189) throughout the year, you should tilt your panels at an angle of 34° 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 Suitland, 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 Suitland, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 22° South in Summer | 43° South in Autumn | 54° South in Winter | 32° 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 Suitland, 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 Suitland, 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 Suitland, United States
Suitland, Maryland is situated in Prince George's County, just southeast of Washington, D.C. The topography of this area is characterized by gently rolling hills and shallow valleys, typical of the Atlantic Coastal Plain region. The elevation around Suitland generally ranges between 250 to 300 feet above sea level, with some modest variations throughout the area. The landscape features a mix of developed urban and suburban environments interspersed with pockets of woodland and open spaces. The terrain gradually slopes downward toward the east, where it eventually meets the Potomac River basin. Several small streams and drainage ways cut through the area, creating subtle valleys and depressions in the otherwise moderate terrain.
Nearby Areas Suitable for Solar PV Development
When considering large-scale solar photovoltaic (PV) installations near Suitland, several factors beyond mere topography must be considered, including existing land use, accessibility, and environmental considerations. The open areas east of Suitland, particularly in parts of Prince George's County that are less densely developed, offer potential for solar development. These areas benefit from relatively flat terrain that would minimize grading costs during installation. Former agricultural lands or brownfield sites in southeastern Prince George's County provide promising opportunities for solar development without disrupting ecologically sensitive areas. Andrews Air Force Base, located just east of Suitland, contains substantial open space that could potentially accommodate solar installations, particularly on unused portions of the facility or as part of military sustainability initiatives. The industrial corridors along major highways in the region, such as those following Route 4 or parts of the Capital Beltway, contain large commercial rooftops and some vacant parcels that could support significant solar capacity without requiring new land development. Areas to avoid would include the wetlands associated with the Potomac River basin to the south and east, protected parklands within the regional system, and densely populated residential neighborhoods where large-scale installations would be impractical. The moderate relief of the topography throughout much of the region means that shading from terrain features is minimal, allowing for efficient solar collection across much of the area when other siting criteria are met. The most favorable sites would be those with slight southern exposures that maximize solar gain throughout the year.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: Tuesday 13th of May 2025
Last Updated: Friday 17th of October 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!

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.




