Russellville, Arkansas presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this location shows a typical pattern for the Northern Temperate Zone, with summer providing the strongest generation at 6.77kWh per day per kW of installed capacity. Spring offers good production at 5.31kWh/day, making it the second-best season for solar generation. Autumn drops to 4.42kWh/day, while winter presents the most challenging conditions with only 2.60kWh/day per kW installed. This seasonal variation means that summer produces more than twice the energy of winter months, which is important for planning energy storage or grid-tied systems. The spring and autumn months provide moderate production levels that can help bridge the gap between peak summer generation and low winter output.

Optimal Panel Configuration

For maximum year-round energy production at Russellville, solar panels should be installed at a fixed tilt angle of 31 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's changing position throughout the year and weighting the angles based on actual solar irradiance data and daily photovoltaic potential.

Local Environmental Factors

Several environmental and weather factors in the Russellville area can impact solar energy production:

Severe Weather Concerns

Arkansas experiences frequent thunderstorms, particularly during spring and summer months, which can temporarily reduce solar output due to cloud cover. The region is also prone to hail storms that can potentially damage solar panels. Additionally, Arkansas falls within an area that occasionally experiences tornadoes, which pose a risk to any rooftop installations.

Humidity and Atmospheric Conditions

The humid subtropical climate typical of Arkansas can create atmospheric haze and moisture that reduces solar irradiance reaching the panels. High humidity levels can also contribute to more frequent cloud formation, particularly during summer afternoons when solar potential would otherwise be at its peak.

Seasonal Weather Patterns

Winter months bring increased cloud cover and precipitation, contributing to the significantly lower energy output during this season. Ice storms, while less frequent, can coat panels and completely stop energy production until the ice melts or is removed.

Preventative Measures for Optimal Performance

Several strategies can help maximize solar energy production despite these local challenges:

• Impact-resistant panels: Install solar panels rated for hail impact to withstand severe weather conditions common in Arkansas
• Proper mounting systems: Use robust mounting hardware designed for high wind loads to protect against storm damage
• Regular cleaning schedule: Implement a maintenance routine to remove dust, pollen, and debris that accumulate more readily in humid conditions
• Microinverters or power optimizers: These can help minimize the impact of partial shading from clouds or debris on individual panels
• Adequate drainage: Ensure proper panel mounting to allow water runoff and prevent ice buildup during winter storms

Overall Assessment

While Russellville, Arkansas is not among the most ideal locations for solar energy generation due to its humid climate and severe weather patterns, it can still provide reasonable solar energy production, particularly during the warmer months. The key to success lies in proper system design, quality equipment selection, and regular maintenance to address the local environmental challenges. The significant seasonal variation means that energy storage or grid-tied systems with net metering become particularly important for year-round energy needs.

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 Russellville, Arkansas

Seasonal solar PV output for Latitude: 35.3071, Longitude: -93.0676 (Russellville, Arkansas, 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 31° South in Russellville, Arkansas, United States

To maximize your solar PV system's energy output in Russellville, Arkansas, United States (Lat/Long 35.3071, -93.0676) throughout the year, you should tilt your panels at an angle of 31° 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 Russellville, Arkansas, 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 Russellville, Arkansas, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 31° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
19° South in Summer	40° South in Autumn	51° South in Winter	28° 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 Russellville, Arkansas, 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 Russellville, Arkansas, 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 Russellville, Arkansas, United States

Topographical Features of Russellville

Russellville sits in the Arkansas River Valley region of west-central Arkansas, positioned between two major mountain ranges that define much of the state's landscape. The city lies in a transitional zone where the relatively flat river valley meets the foothills of the Ozark Mountains to the north and the Ouachita Mountains to the south. This location creates a varied topographical setting with rolling hills, river terraces, and scattered flatlands.

The Arkansas River flows just south of the city, creating fertile bottomlands and alluvial plains that extend outward from the riverbanks. These areas are characterized by gentle slopes and relatively level terrain, interrupted occasionally by small creeks and drainage channels that feed into the main river system. Moving away from the river valley, the landscape gradually transitions into more undulating terrain with moderate elevation changes.

To the north of Russellville, the terrain begins to rise toward the Boston Mountains, which form the southern edge of the Ozark Plateau. This creates a series of ridges and valleys running generally east-west, with elevations increasing as one moves northward. The southern areas transition toward the Ouachita Mountains, though the immediate vicinity remains within the river valley's influence, maintaining more moderate topographical relief.

Optimal Areas for Large-Scale Solar Development

The most promising locations for large-scale solar photovoltaic installations around Russellville would be found in the Arkansas River Valley bottomlands and the broader river terraces that extend outward from the main channel. These areas offer the combination of relatively flat terrain and minimal shading that large solar arrays require for optimal performance and cost-effective installation.

The agricultural lands south and southeast of Russellville present particularly attractive opportunities, as these areas feature gentle slopes and open fields with minimal tree cover. The river valley's natural clearing provides expansive areas where solar panels could be installed without significant grading or land preparation costs. Additionally, these locations benefit from good accessibility to existing road networks and electrical infrastructure.

Areas to the west and southwest of the city also show strong potential, where the valley widens and creates broader expanses of relatively level terrain. These locations maintain the favorable topographical characteristics while potentially offering larger contiguous parcels suitable for utility-scale developments.

The rolling hills and steeper terrain found in the northern and northwestern areas toward the Ozark foothills would be less suitable for large installations due to increased grading requirements, potential shading issues, and more complex installation logistics. Similarly, areas with significant forest cover or those closer to the more rugged terrain of the surrounding mountain regions would present greater challenges for large-scale solar development.

The proximity to the Arkansas River also provides potential advantages for solar installations through access to water resources that might be needed for panel cleaning and maintenance, though the flat valley terrain remains the primary topographical advantage for solar development in the 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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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.