Siloam Springs, Arkansas, situated in the Northern Temperate Zone of the United States, offers varying potential for solar energy production throughout the year. This location experiences significant seasonal fluctuations in solar electricity generation that prospective solar panel owners should understand.

Seasonal Solar Production

Solar panels in Siloam Springs demonstrate strong performance during summer months, generating approximately 6.95kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.19kWh/day, while autumn yields 4.41kWh/day. Winter presents the greatest challenge with production dropping to just 2.66kWh/day per installed kilowatt.

This seasonal pattern creates an annual average that makes solar viable, though with clear peak production periods from late spring through early fall. The substantial difference between summer and winter output (a reduction of over 60% in winter) indicates that supplementary energy sources might be necessary during colder months.

Optimal Panel Installation

For fixed solar panel installations in Siloam Springs, the ideal tilt angle to maximize year-round energy production is 32 degrees facing South. This carefully calculated angle optimizes the annual solar harvest by balancing seasonal variations in the sun's position.

Environmental Considerations

Several environmental factors in Siloam Springs could potentially impact solar production efficiency:

• Tree coverage and foliage, particularly from the region's abundant deciduous trees, can cast shadows on panels, especially in residential areas.
• Seasonal weather patterns including occasional ice storms in winter and thunderstorms with hail in spring and summer pose physical risks to installations.
• Dust and pollen accumulation is common in this rural area, particularly during spring and fall.

Preventative Measures

To maximize solar production in this location, consider implementing these protective strategies:

• Conduct thorough shade analysis before installation and trim overhanging branches where necessary.
• Install panels with quality hail-resistant tempered glass and robust mounting systems designed to withstand local weather extremes.
• Implement automated or scheduled cleaning systems to address pollen and dust buildup, particularly after peak pollen seasons.
• Consider slight adjustments to the panel angle seasonally if your mounting system allows, tilting more steeply in winter to capture lower-angle sunlight.

With proper installation and maintenance, Siloam Springs can provide good solar energy returns, particularly from March through October when production levels remain consistently higher.

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 Siloam Springs

Seasonal solar PV output for Latitude: 36.1805, Longitude: -94.5304 (Siloam Springs, 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 32° South in Siloam Springs, United States

To maximize your solar PV system's energy output in Siloam Springs, United States (Lat/Long 36.1805, -94.5304) throughout the year, you should tilt your panels at an angle of 32° 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 Siloam Springs, 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 Siloam Springs, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
20° South in Summer	40° South in Autumn	51° South in Winter	30° 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 Siloam Springs, 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 Siloam Springs, 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 Siloam Springs, United States

Siloam Springs nestles in the northwestern corner of Arkansas, close to the Oklahoma border. The landscape surrounding this charming city features a diverse topography characteristic of the transitional zone between the Ozark Mountains and the broader plains to the west. The terrain consists of gently rolling hills interspersed with valleys, creating an undulating landscape that gradually rises toward the east where the Ozark Plateau becomes more prominent. The city itself sits in a valley formed by Sager Creek, which winds through the center of town before joining the Illinois River. This valley orientation creates natural depressions surrounded by elevated ridges and plateaus. The elevation in the immediate vicinity of Siloam Springs varies between approximately 1,050 to 1,300 feet above sea level, with higher elevations found in the hills to the north and east.

Surrounding Landscape Features

To the east of Siloam Springs, the terrain becomes increasingly rugged as it transitions into the true Ozark Mountains, with steeper slopes, deeper valleys, and more densely forested areas. The Illinois River creates a significant valley system that runs through the region, carving natural corridors through the otherwise hilly terrain. Westward, toward Oklahoma, the landscape gradually flattens, transitioning toward the plains that eventually extend into the Great Plains region. This western area features more open spaces with gentler slopes and fewer dramatic elevation changes. The region experiences four distinct seasons and receives moderate rainfall throughout the year, supporting lush vegetation. The natural landscape includes a mix of deciduous forests, particularly on north-facing slopes and in valleys, with more open areas and grasslands on south-facing slopes and ridge tops.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic installations, several areas near Siloam Springs offer promising conditions. The most suitable locations would be: The gently sloping plateaus to the west and southwest of Siloam Springs provide ideal conditions for solar development. These areas feature more open terrain with fewer steep slopes, making construction and maintenance more feasible. The gradual transition toward the plains creates expansive areas with consistent elevation, reducing shadowing effects that can impact solar efficiency. Ridge tops throughout the region, particularly those with southern exposure, represent prime locations for solar arrays. These elevated positions typically experience less fog and morning mist than the valleys, allowing for earlier solar exposure during the day. The natural elevation also minimizes shadowing from surrounding terrain features. Agricultural lands in the broader vicinity, especially those with minimal tree cover and good southern exposure, offer practical opportunities for solar development. Many of these areas already have access to existing road infrastructure and are less densely forested, reducing land preparation costs. Areas north of the city toward the Missouri border include several broad valleys and plateaus that would accommodate large-scale installations. These locations benefit from relatively flat terrain while still having sufficient elevation to avoid flood-prone areas. The terrain immediately east of Siloam Springs, where the Ozark foothills begin in earnest, is generally less suitable due to increased forest cover, steeper slopes, and more complex topography that would require significant land modification. When considering specific sites, factors beyond pure topography—such as proximity to existing transmission infrastructure, current land use, and environmental considerations—would need detailed assessment. The most promising areas combine relatively flat terrain, minimal forest cover, southern exposure, and accessibility to roads and electrical infrastructure.

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.