Stewart, Minnesota is a moderately suitable location for year-round solar energy generation, though it experiences significant seasonal variation typical of the Northern Temperate Zone climate.

Seasonal Solar Production Patterns

The solar energy output at Stewart varies dramatically throughout the year. Summer provides the highest production at 6.83 kWh per day per kW of installed solar capacity, making it nearly three times more productive than the winter months, which generate only 2.34 kWh per day per kW. Spring offers good production at 5.19 kWh per day per kW, while autumn drops to 3.38 kWh per day per kW. For optimal year-round energy capture, solar panels should be installed at a fixed tilt angle of 39 degrees facing south. This angle maximizes total annual production by accounting for the sun's varying position throughout the seasons and the Earth's elliptical orbit.

Environmental and Weather Challenges

Several factors in Stewart's climate can significantly impact solar energy production:

• Snow accumulation: Minnesota's heavy winter snowfall can completely cover solar panels, blocking all energy production for days or weeks at a time
• Ice formation: Freezing rain and ice storms can create thick ice layers on panels that are difficult to remove naturally
• Cloud cover: The region experiences frequent overcast conditions, particularly during winter months, which reduces solar irradiance
• Extreme temperature fluctuations: Rapid freeze-thaw cycles can stress panel mounting systems and electrical connections

Preventative Installation Measures

To maximize solar production despite these challenges, several installation strategies should be considered. Panels should be mounted at steeper angles (closer to the recommended 39 degrees) to promote natural snow shedding through gravity. Installing panels with adequate ground clearance allows snow to fall away rather than accumulating beneath the array. Using high-quality mounting systems rated for heavy snow loads prevents structural damage during severe weather. Anti-reflective coatings on panels can help reduce ice formation, while ensuring easy roof access allows for safe manual snow removal when necessary. Proper electrical system design with microinverters or power optimizers helps maintain production when individual panels are partially covered. Additionally, installing a monitoring system allows homeowners to track production and identify when cleaning or snow removal is needed. Despite these seasonal challenges, Stewart's strong summer and spring solar production can still make solar installations economically viable, especially when combined with net metering programs that allow excess summer production to offset lower winter output.

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 Stewart

Seasonal solar PV output for Latitude: 44.7247, Longitude: -94.4858 (Stewart, 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 39° South in Stewart, United States

To maximize your solar PV system's energy output in Stewart, United States (Lat/Long 44.7247, -94.4858) throughout the year, you should tilt your panels at an angle of 39° 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 Stewart, 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 Stewart, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 39° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
28° South in Summer	48° South in Autumn	58° South in Winter	37° 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 Stewart, 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 Stewart, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Stewart, United States

Topographical Features of Stewart, Minnesota

Stewart is situated in the heart of south-central Minnesota's agricultural region, characterized by gently rolling prairie terrain that typifies much of the upper Midwest. The landscape around Stewart consists primarily of fertile farmland with modest elevation changes, creating a relatively flat to gently undulating topography. This area sits within the broader Minnesota River valley system, where glacial activity during the last ice age left behind rich soils and a generally level terrain ideal for agriculture.

The immediate vicinity features expansive crop fields interspersed with small woodlots and farmsteads. Elevation changes are gradual rather than dramatic, with the terrain rising and falling in gentle swells across the landscape. Small creeks and drainage ditches wind through the agricultural areas, creating minor valleys and depressions, but these features are typically shallow and do not significantly alter the overall flat character of the region.

The Minnesota River flows roughly fifteen miles to the south of Stewart, creating the most significant topographical feature in the broader area. This river valley represents a more pronounced change in elevation, with bluffs and steeper slopes marking its boundaries. However, the land around Stewart itself remains well above this valley system and maintains its characteristic prairie flatness.

Optimal Areas for Large-Scale Solar Development

The topography around Stewart presents excellent opportunities for large-scale solar photovoltaic installations. The extensive flat to gently rolling agricultural land provides ideal conditions for solar farms, as the minimal elevation changes reduce grading requirements and construction costs while maximizing efficient panel placement.

The most suitable areas for solar development lie in the open agricultural fields that dominate the landscape in all directions from Stewart. These large, unobstructed parcels offer the space necessary for utility-scale installations while avoiding the complications that steeper terrain would present. The gentle slopes that do exist can actually benefit solar installations by providing natural drainage and potentially optimal panel angles when properly oriented.

Areas to the north and west of Stewart appear particularly well-suited for solar development, where the terrain remains consistently flat and agricultural use has kept the land clear of significant tree cover. The existing field boundaries and rural road network would facilitate access for construction and maintenance activities. The absence of major topographical obstacles such as steep hills, deep valleys, or extensive wetlands means that large contiguous areas could be developed without significant site preparation challenges.

The relatively sparse rural population and agricultural land use patterns create fewer conflicts with residential areas compared to more developed regions. This factor, combined with the favorable topography, makes the Stewart area an attractive candidate for renewable energy development that could serve the broader Minnesota electrical grid system.

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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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.