Hartford, Alabama, located in the Northern Sub Tropics at coordinates 31.1024, -85.6969, presents a moderately favorable location for year-round solar photovoltaic energy generation, though with notable seasonal variations in output.
Seasonal Solar Production Performance
The solar energy production at this location shows significant seasonal fluctuation. Spring delivers the highest output at 6.27 kWh per day per kW of installed solar capacity, closely followed by summer at 6.26 kWh per day. These two seasons represent the peak production periods when solar panels operate at their most efficient levels. Autumn sees a moderate decline to 4.75 kWh per day per kW, while winter experiences the lowest production at just 3.00 kWh per day per kW. This winter reduction represents less than half the output of peak seasons, which is typical for locations in the Northern Sub Tropics due to shorter days and lower sun angles during winter months.Optimal Installation Configuration
For maximum year-round energy production at Hartford, Alabama, solar panels should be installed at a fixed tilt angle of 27 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's varying position throughout the year and weighting for daily photovoltaic potential based on solar irradiance data.Environmental and Weather Challenges
Several local factors in Hartford, Alabama can potentially impact solar energy production:- Severe Weather Events: Alabama's location makes it susceptible to thunderstorms, tornadoes, and occasional hurricanes, which can damage solar installations or create extended periods of heavy cloud cover
- High Humidity and Heat: The subtropical climate brings high humidity levels that can reduce panel efficiency, while extreme summer heat can also decrease solar panel performance
- Seasonal Storms: Spring and summer thunderstorms can create frequent cloud cover during peak production seasons, temporarily reducing energy output
- Dust and Pollen: The regional climate supports heavy pollen seasons and dust accumulation, which can coat panels and reduce their efficiency
Preventative Measures for Optimal Performance
To maximize solar energy production despite these challenges, several installation strategies should be considered:- Storm-Resistant Mounting: Use reinforced mounting systems designed to withstand high winds and install panels with adequate spacing to prevent wind uplift
- Regular Cleaning Schedule: Implement routine panel cleaning to remove pollen, dust, and debris, particularly during heavy pollen seasons in spring
- Proper Ventilation: Ensure adequate airflow around panels to help dissipate heat and maintain efficiency during hot, humid conditions
- Quality Components: Select panels and inverters rated for high-temperature operation and humid conditions to maintain performance in subtropical weather
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 Hartford, Alabama
Seasonal solar PV output for Latitude: 31.1024, Longitude: -85.6969 (Hartford, Alabama, 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 27° South in Hartford, Alabama, United States
To maximize your solar PV system's energy output in Hartford, Alabama, United States (Lat/Long 31.1024, -85.6969) throughout the year, you should tilt your panels at an angle of 27° 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 Hartford, Alabama, 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 Hartford, Alabama, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 15° South in Summer | 36° South in Autumn | 46° South in Winter | 24° 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 Hartford, Alabama, 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 Hartford, Alabama, United States.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Hartford, Alabama, United States
Topographical Features Around Hartford, Alabama
Hartford sits in the southeastern portion of Alabama within the Coastal Plain physiographic region, characterized by gently rolling terrain and relatively modest elevation changes. The landscape around this small city consists primarily of low hills and shallow valleys, with elevations typically ranging from about 200 to 400 feet above sea level. The topography reflects the area's position within the Eastern Gulf Coastal Plain, where ancient marine sediments have created a terrain that undulates softly rather than presenting dramatic elevation changes. The region features a mix of agricultural lands, pine forests, and scattered residential areas spread across these gentle slopes. Small creeks and tributaries wind through the valleys, creating natural drainage patterns that have shaped the local landscape over thousands of years. The soil composition includes sandy loams and clay deposits typical of the Coastal Plain, with areas of both well-drained uplands and occasionally poorly drained lowlands near waterways.Terrain Characteristics for Solar Development
The topographical conditions around Hartford present several advantages for large-scale solar photovoltaic installations. The gently rolling nature of the landscape provides numerous south-facing slopes that would naturally optimize solar panel orientation without requiring extensive grading or earthwork. These modest inclines offer ideal positioning for maximizing solar exposure throughout the day while maintaining good drainage characteristics essential for long-term facility maintenance. The relatively stable geology of the Coastal Plain region provides solid foundation conditions for mounting systems and supporting infrastructure. Unlike areas with steep terrain or unstable soils, the Hartford vicinity offers predictable ground conditions that simplify construction planning and reduce development costs for utility-scale solar projects.Optimal Areas for Solar Installation
The most suitable locations for large-scale solar development would be the cleared agricultural lands and managed pine forest areas that dot the landscape around Hartford. These open or easily clearable spaces typically occupy the higher elevations and south-facing slopes, providing natural advantages for solar collection. Former farmland areas often present the ideal combination of accessibility, appropriate topography, and existing infrastructure connections. Areas to the south and southwest of Hartford appear particularly promising, where the terrain consists of broad, gently sloping fields with good road access and proximity to existing electrical infrastructure. The elevated areas between creek valleys offer stable ground conditions while avoiding potential flooding concerns associated with lower-lying areas near waterways. The region's network of rural roads and proximity to transmission infrastructure make many of these topographically suitable areas practically accessible for solar development. The combination of gentle slopes, stable soils, and existing land use patterns creates numerous potential sites where large solar arrays could be installed with minimal environmental disruption and optimal performance characteristics.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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 2nd of August 2025
Last Updated: Friday 8th of August 2025
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Compare this location to others worldwide for solar PV potential
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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.




