Jasper, Alabama, located in the Northern Sub Tropics at coordinates 33.8927, -87.1667, offers moderately good conditions for year-round solar energy generation, though with significant seasonal variations that make it less than ideal compared to sunnier regions.

Seasonal Solar Performance

The solar energy output at this location shows strong seasonal patterns. Summer provides the highest energy production at 6.06 kWh per day per kW of installed solar capacity, making it the peak season for solar generation. Spring follows closely with 5.93 kWh per day, creating an excellent secondary production period. Autumn drops to 4.43 kWh per day, representing a moderate production season. Winter presents the most challenging period with only 2.79 kWh per day, less than half of summer's output. This dramatic winter reduction is typical for locations at this latitude and represents the main limitation for year-round solar reliability.

Optimal Installation Setup

For fixed panel installations at Jasper, the ideal tilt angle is 30 degrees facing south to maximize total year-round solar production. This angle balances the seasonal sun variations to capture the most energy across all months.

Local Factors Affecting Solar Production

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

• High humidity and frequent cloud cover - The subtropical climate brings regular moisture and overcast conditions that reduce solar irradiance
• Severe weather events - Thunderstorms, tornadoes, and occasional ice storms can damage equipment and create extended periods of reduced sunlight
• Heavy pollen seasons - Alabama's abundant vegetation creates thick pollen deposits on panels during spring months
• Summer heat buildup - High temperatures and humidity can reduce panel efficiency

Preventative Measures for Better Performance

Several installation strategies can help maximize solar production despite these challenges:

• Regular cleaning schedules - Monthly panel washing during pollen season and quarterly cleaning otherwise
• Proper ventilation design - Installing panels with adequate air circulation underneath to prevent heat buildup
• Storm-resistant mounting - Using reinforced racking systems rated for high winds and hail
• Microinverters or power optimizers - These help maintain production when individual panels are shaded by clouds or debris
• Strategic tree trimming - Removing overhanging branches that could fall during storms or create shading

While Jasper's location provides decent solar potential during warmer months, the significant winter production drop and regional weather challenges make it a moderately suitable rather than ideal location for solar energy generation.

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 Jasper

Seasonal solar PV output for Latitude: 33.8927, Longitude: -87.1667 (Jasper, 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 Jasper, United States

To maximize your solar PV system's energy output in Jasper, United States (Lat/Long 33.8927, -87.1667) 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 Jasper, 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 Jasper, 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	26° 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 Jasper, 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 Jasper, 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 Jasper, United States

Topographical Features Around Jasper, Alabama

Jasper sits in the heart of Walker County, Alabama, positioned within the Appalachian foothills region. The landscape around this area is characterized by rolling hills, gentle ridges, and valleys that create a moderately undulating terrain. The elevation varies considerably across the region, with Jasper itself located at approximately 400 feet above sea level, while surrounding hills can reach elevations of 800 to 1,000 feet.

The topography is heavily influenced by the underlying geology of the Cumberland Plateau, which extends into this part of Alabama. This geological foundation has created a landscape of alternating ridges and valleys that run primarily in a northeast-southwest direction. The terrain features numerous small creeks and tributaries that have carved shallow valleys through the landscape over time, contributing to the area's varied elevation profile.

Dense forests cover much of the surrounding countryside, with mixed hardwood and pine forests dominating the hillsides and ridgetops. Agricultural land and pastures occupy many of the valley floors and gentler slopes, creating a patchwork of cleared and forested areas throughout the region. The soil composition varies from clay-based soils in the valleys to sandstone-derived soils on the higher elevations.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Jasper would be found on the broader ridgetops and gently sloping plateaus that characterize the higher elevations in the area. These elevated positions typically offer the best combination of relatively flat terrain and minimal shading from surrounding topographical features. The ridgetops also tend to have fewer trees and more open agricultural or pasture land, reducing the need for extensive clearing operations.

South-facing slopes with gradual inclines would be particularly well-suited for solar development, as they naturally optimize panel orientation while maintaining manageable construction conditions. Areas with slopes between 0 and 15 degrees are generally considered ideal for large-scale solar installations, and such terrain can be found on many of the broader hilltops and plateau areas surrounding Jasper.

The valley floors, while often flatter, may be less desirable due to potential shading from surrounding hills during certain times of the day and seasons. Additionally, these lower-lying areas are more likely to experience fog and moisture retention, which could impact solar panel efficiency. The agricultural valleys also represent valuable farmland that communities may prefer to preserve for food production.

Former mining areas, which are present in this region due to Walker County's coal mining history, could present unique opportunities for solar development. These previously disturbed lands often feature flattened or terraced surfaces that require minimal additional grading, and their conversion to solar use represents beneficial reuse of industrial sites.

Transportation access remains an important consideration, as large-scale solar installations require good road access for construction equipment and ongoing maintenance. The areas most suitable for development would be those elevated sites that maintain reasonable proximity to existing road networks while offering the topographical advantages necessary for efficient solar energy generation.

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.