Oacoma, South Dakota, located in the Northern Temperate Zone, presents a varied landscape for solar energy generation throughout the year. With its position at 43.7935° N latitude and -99.3958° W longitude, this location experiences significant seasonal fluctuations in solar potential.
Seasonal Solar Performance
Summer stands out as the prime season for solar energy production in Oacoma, with an impressive daily output of 7.09 kWh per kW of installed solar capacity. Spring follows as the second-best season, yielding 5.52 kWh/day. Autumn sees a notable decrease to 3.67 kWh/day, while winter experiences the lowest output at 2.38 kWh/day.
These figures highlight the substantial variation in solar potential across seasons, with summer producing nearly three times the energy of winter. This pattern aligns with the region's latitude, where longer summer days and higher sun angles contribute to increased solar efficiency.
Optimal Panel Positioning
To maximize year-round solar production in Oacoma, fixed solar panels should be tilted at a 38-degree angle facing south. This orientation helps optimize energy capture across all seasons, balancing the high summer sun with the lower winter sun angle.
Environmental Considerations
While Oacoma's location is generally favorable for solar energy, there are some environmental factors to consider:
- Snow accumulation in winter can temporarily reduce panel efficiency
- Dust and pollen during spring and summer may affect panel performance
To mitigate these issues, consider installing panels at a steeper angle to promote snow sliding off and implement regular cleaning routines. Additionally, using high-quality, weather-resistant panels can help maintain efficiency in varying conditions.
Conclusion
Overall, Oacoma presents a good opportunity for solar energy production, especially during the spring and summer months. While winter output is considerably lower, the location's annual solar potential remains substantial. With proper panel positioning and maintenance, solar PV systems in Oacoma can provide a significant contribution to renewable energy generation.
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 Oacoma
Seasonal solar PV output for Latitude: 43.7935, Longitude: -99.3958 (Oacoma, 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 Oacoma, United States
To maximize your solar PV system's energy output in Oacoma, United States (Lat/Long 43.7935, -99.3958) 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 Oacoma, 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 Oacoma, 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 | 58° 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 Oacoma, 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 Oacoma, 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 Oacoma, United States
The topography around Oacoma, South Dakota, is characterized by gently rolling plains and prairies typical of the Great Plains region. This area, situated along the Missouri River, features a mix of flat to slightly undulating terrain with occasional hills and bluffs. The landscape is largely shaped by glacial activity from the last ice age, resulting in a relatively smooth surface with some subtle variations in elevation. To the east of Oacoma, the Missouri River cuts through the landscape, creating a wide river valley with steep bluffs and terraces along its banks. These bluffs offer some of the more dramatic topographical features in the area, rising abruptly from the river's edge. The land gradually slopes away from the river on both sides, transitioning into expansive prairies that stretch for miles in all directions.
Potential for Solar PV Development
When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The ideal locations would combine flat or gently sloping terrain with good sun exposure and minimal shading from natural or man-made obstacles. The open prairies to the west and southwest of Oacoma present promising opportunities for solar development. These areas offer vast expanses of relatively flat land with few obstructions to block sunlight. The slight slopes in some parts of the prairie could even be advantageous, as they can be oriented to maximize solar exposure throughout the day. Areas to the north and northwest of Oacoma, extending towards the town of Reliance, also show potential for solar PV projects. This region features wide-open spaces with minimal tree cover and gentle topography, providing ample room for large arrays of solar panels. It's worth noting that while the bluffs along the Missouri River offer interesting topographical features, they may not be ideal for large-scale solar installations due to their steeper slopes and potential shading issues. However, the elevated plateaus above these bluffs could be suitable if they offer sufficiently flat surfaces. When planning any solar development in this region, it's important to consider factors beyond just topography, such as proximity to existing power infrastructure, local zoning regulations, and potential environmental impacts. The abundant open space and generally favorable terrain around Oacoma make this area a promising candidate for future solar energy projects, contributing to South Dakota's renewable energy potential.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 18th of April 2025
Last Updated: Tuesday 26th 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.
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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.




