Dardanelle, Arkansas is a moderately suitable location for year-round solar energy generation, though it experiences significant seasonal variations in solar output that are typical for locations in the Northern Temperate Zone.

Seasonal Solar Performance

The solar energy production at this location varies considerably throughout the year. Summer provides the highest output at 6.77 kWh per day per kW of installed solar capacity, making it the ideal season for solar generation. Spring follows as the second-best performing season with 5.31 kWh per day per kW, offering strong solar production as daylight hours increase and weather conditions improve. Autumn sees a notable decline in solar output to 4.42 kWh per day per kW as the sun's angle decreases and weather patterns change. Winter presents the most challenging conditions for solar generation, producing only 2.60 kWh per day per kW of installed capacity - less than half of summer's output.

Optimal Panel Configuration

For maximum year-round solar energy production at this Dardanelle location, solar panels should be installed at a fixed tilt angle of 31 degrees facing south. This angle has been calculated to optimize total annual energy output by accounting for the sun's varying position throughout the seasons and the Earth's elliptical orbit around the sun.

Local Factors Affecting Solar Production

Several environmental and weather factors in Arkansas can significantly impact solar energy production and should be considered when installing solar panels:

• Severe Weather Events: Arkansas experiences tornadoes, hailstorms, and severe thunderstorms that can damage solar installations
• High Humidity and Heat: The region's humid subtropical climate can reduce panel efficiency and accelerate equipment degradation
• Ice Storms: Winter ice accumulation can block panels and potentially damage mounting systems
• Heavy Rainfall: Frequent storms can create debris accumulation and drainage issues

Preventative Measures for Better Performance

To maximize solar energy production and protect against local environmental challenges, several installation strategies should be employed:

• Impact-Resistant Panels: Use panels rated for hail impact and high wind loads to withstand severe weather
• Robust Mounting Systems: Install heavy-duty racking systems engineered for high wind speeds and potential ice loading
• Proper Drainage: Ensure adequate drainage around ground-mounted systems and proper roof drainage for rooftop installations
• Regular Maintenance: Implement scheduled cleaning and inspection programs to remove debris and identify weather-related damage early
• Quality Inverters: Choose inverters with high temperature tolerance and humidity resistance suitable for Arkansas's climate

Despite these challenges, Dardanelle's solar potential remains viable for year-round energy generation, particularly during the productive spring and summer months when solar output is strongest.

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 Dardanelle

Seasonal solar PV output for Latitude: 35.2231, Longitude: -93.1579 (Dardanelle, 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 Dardanelle, United States

To maximize your solar PV system's energy output in Dardanelle, United States (Lat/Long 35.2231, -93.1579) 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 Dardanelle, 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 Dardanelle, 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 Dardanelle, 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 Dardanelle, 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 Dardanelle, United States

Topography Around Dardanelle, Arkansas

The terrain surrounding Dardanelle, Arkansas presents a varied landscape characteristic of the Arkansas River Valley region. The town sits in a transitional zone where the Ouachita Mountains to the south meet the Arkansas River Valley, creating a mix of rolling hills, river bottomlands, and elevated plateaus. The Arkansas River flows directly through this area, creating fertile floodplains and terraced landscapes that have been shaped by centuries of river activity. To the north of Dardanelle, the land gradually rises toward the foothills of the Ozark Mountains, featuring gentle slopes and ridgelines that extend eastward and westward. These northern areas are characterized by moderately rolling terrain with elevations typically ranging from 400 to 800 feet above sea level. The landscape includes a combination of cleared agricultural land, mixed hardwood forests, and open meadows. South of the Arkansas River, the topography becomes more pronounced as it approaches the Ouachita Mountain range. This southern region features steeper slopes, deeper valleys, and more dramatic elevation changes. The terrain includes numerous ridges running in an east-west direction, which is typical of the Ouachita geological formation.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Dardanelle would be found primarily in the northern sections of the area. These regions offer several advantages including relatively flat to gently rolling terrain that minimizes grading and construction costs. The agricultural bottomlands near the Arkansas River also present excellent opportunities, as these areas are typically cleared of trees and have minimal slope variations. The elevated plateaus and ridge tops north of Dardanelle provide particularly attractive sites for solar development. These locations benefit from reduced shading from surrounding terrain and vegetation while maintaining accessibility for construction and maintenance equipment. The cleared agricultural lands in this northern region offer large contiguous parcels that could accommodate utility-scale solar arrays without significant land preparation costs. Areas to the immediate east and west of Dardanelle along the river valley corridor also present good potential for solar development. These zones combine relatively flat topography with existing infrastructure access, including proximity to electrical transmission lines and transportation networks. The river valley's orientation allows for optimal solar panel positioning while minimizing the impact of surrounding hills and forests. The southern areas approaching the Ouachita Mountains would be less suitable for large-scale solar installations due to their steeper terrain, increased forestation, and potential shading issues from surrounding ridges. However, some of the cleared agricultural areas in the southern valleys could still accommodate smaller solar projects with appropriate site preparation.

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.