Hartselle, Alabama, located in the Northern Sub Tropics at coordinates 34.4469, -86.9237, offers a relatively favorable environment for solar PV energy generation throughout the year. The location experiences significant seasonal variations in solar output, with peak production during the summer months.

Seasonal Solar Performance

Summer stands out as the most productive season, with an impressive 6.21 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 5.85 kWh/day. Autumn sees a moderate decline to 4.38 kWh/day, while winter experiences the lowest output at 2.70 kWh/day.

These figures indicate that Hartselle is well-suited for solar energy production, particularly from late spring through early fall. The extended daylight hours and typically clearer skies during these periods contribute to higher energy yields.

Optimal Panel Tilt

For fixed panel installations in Hartselle, the ideal tilt angle to maximize year-round solar production is 30 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, balancing the sun's changing position across seasons.

Environmental Considerations

While Hartselle's climate is generally conducive to solar energy production, there are some factors that could potentially impact performance:

1. Humidity: The region's subtropical climate can lead to high humidity levels, which may slightly reduce panel efficiency.
2. Thunderstorms: Alabama experiences frequent thunderstorms, particularly in spring and summer, which can temporarily reduce solar output.

To mitigate these factors, consider using high-quality, weather-resistant panels and implementing a robust cleaning schedule to prevent dust and pollen accumulation. Additionally, installing a monitoring system can help track performance and identify any issues promptly.

Overall, Hartselle's location provides a solid foundation for solar PV energy generation, with ample sunshine throughout most of the year and manageable environmental challenges.

Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° 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 Hartselle

Seasonal solar PV output for Latitude: 34.4469, Longitude: -86.9237 (Hartselle, 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 30° South in Hartselle, United States

To maximize your solar PV system's energy output in Hartselle, United States (Lat/Long 34.4469, -86.9237) throughout the year, you should tilt your panels at an angle of 30° 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 Hartselle, 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 Hartselle, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
18° South in Summer	39° South in Autumn	49° South in Winter	27° 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 Hartselle, 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 Hartselle, 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 Hartselle, United States

The area surrounding Hartselle, Alabama, located at coordinates 34.4469°N, 86.9237°W, is characterized by gently rolling hills and shallow valleys typical of the southern Appalachian Plateau region. This topography is a result of long-term erosion of sedimentary rock layers, creating a landscape of modest elevation changes and meandering streams. The terrain around Hartselle features a mix of open fields, wooded areas, and small waterways. The land gradually rises from the Tennessee River Valley to the north, with elevations typically ranging from about 600 to 800 feet above sea level in the immediate vicinity of Hartselle. This subtle variation in elevation creates a patchwork of slopes and flat areas across the region.

Solar PV Potential

When considering areas nearby that would be most suited for large-scale solar photovoltaic (PV) installations, several factors come into play. The gently rolling landscape offers numerous locations with favorable conditions for solar energy production. Open fields and cleared areas to the south and southeast of Hartselle present promising opportunities for solar PV development. These locations often have good sun exposure throughout the day and minimal shading from nearby trees or structures. The slight slopes in these areas can actually be beneficial for solar panel placement, as they can be oriented to maximize sunlight capture. Areas with southern exposure on the gradual hillsides surrounding Hartselle could also be well-suited for solar installations. These locations tend to receive more direct sunlight throughout the year, increasing the efficiency of solar panels. It's worth noting that while the topography is generally favorable for solar PV, site-specific assessments would be necessary to determine the most optimal locations. Factors such as local zoning regulations, proximity to electrical infrastructure, and environmental considerations would also need to be taken into account when planning large-scale solar projects in the region. Overall, the diverse landscape around Hartselle offers numerous possibilities for solar energy development, with its mix of open spaces and gently sloping terrain providing a solid foundation for potential large-scale solar PV installations.

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.