Wallingford, Connecticut, located in the Northern Temperate Zone, offers a variable environment for solar PV energy production throughout the year. The seasonal electricity output from solar panels at this location shows significant fluctuations across the four seasons.
Seasonal Solar Production
Solar energy generation in Wallingford varies considerably with the seasons. Summer is the most productive period, yielding 5.81kWh per day for each kilowatt of installed capacity. Spring follows closely behind with 5.58kWh/day per kW. Production drops substantially in autumn to 3.45kWh/day per kW, while winter sees the lowest output at just 2.01kWh/day per kW.
This seasonal pattern creates a nearly 3:1 ratio between the best and worst seasons, with summer producing almost three times the electricity of winter months. The substantial spring production makes the March-May period nearly as valuable as summer for solar generation.
Optimal Panel Installation
For fixed solar panel installations in Wallingford, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This angle optimizes the capture of solar radiation throughout the year, balancing the lower winter sun with the higher summer sun position.
Environmental Considerations
Several environmental factors could impact solar production in Wallingford:
- Snow accumulation during Connecticut winters can significantly reduce output by covering panels. Installing panels at the 36-degree tilt helps with natural snow shedding, and occasional manual clearing may be necessary.
- Tree coverage is substantial in this New England region, potentially causing shading issues. A thorough site assessment to identify and mitigate shading from trees is essential for optimal placement.
- Wallingford experiences moderate humidity and approximately 50 days of precipitation annually, which can temporarily reduce efficiency. Regular cleaning can help maintain optimal performance.
The region also experiences occasional severe weather including nor'easters and potential hurricane remnants. Using quality mounting systems rated for high winds and ensuring proper waterproofing connections can protect the system during these events. Microinverters or power optimizers can minimize the impact of partial shading on overall system performance.
Despite these challenges, Wallingford's location provides reasonable solar potential, especially from late spring through early fall, making it a viable location for solar PV installations with proper planning and maintenance.
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 Wallingford
Seasonal solar PV output for Latitude: 41.4568, Longitude: -72.8245 (Wallingford, 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 36° South in Wallingford, United States
To maximize your solar PV system's energy output in Wallingford, United States (Lat/Long 41.4568, -72.8245) throughout the year, you should tilt your panels at an angle of 36° 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 Wallingford, 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 Wallingford, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 25° South in Summer | 46° South in Autumn | 56° South in Winter | 34° 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 Wallingford, 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 Wallingford, 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 Wallingford, United States
The topography around Wallingford, Connecticut reveals a landscape shaped by both natural forces and human development. Situated in New Haven County along the eastern bank of the Quinnipiac River, Wallingford occupies a transitional zone between the Central Connecticut Lowland and the more elevated Eastern Uplands. The terrain generally consists of gently rolling hills interspersed with flat river valleys, with elevations ranging from approximately 30 meters above sea level near the river to about 150 meters in the eastern highlands. The area's geological foundation was largely influenced by glacial activity during the last ice age, which deposited various sediments and created the characteristic drumlin formations visible throughout the region. The Quinnipiac River valley forms a significant topographical feature, providing a natural corridor running north-south through the western portion of Wallingford. This valley contains fertile alluvial soils that have historically supported agricultural activity.
Surrounding Landscape Features
To the east of Wallingford, the terrain gradually rises toward the Metacomet Ridge, a prominent traprock mountain range that extends from Long Island Sound northward through Connecticut. This ridge system includes nearby Beseck Mountain and features steeper slopes and rocky outcroppings. The western portions of Wallingford tend to be flatter as they approach the river valley. Several smaller waterways dissect the landscape, including Wharton Brook and other tributaries of the Quinnipiac River, creating minor valleys and drainage patterns throughout the area. These waterways have carved gentle depressions in the otherwise moderately sloping terrain. The urban development pattern in Wallingford reflects this topography, with denser settlement in the flatter central and western areas, while the eastern uplands maintain more wooded and less developed character. Interstate 91 follows the natural north-south corridor provided by the river valley's relatively flat terrain.Optimal Areas for Solar PV Development
For large-scale solar photovoltaic (PV) installations, several areas around Wallingford present favorable conditions based on topographical considerations: The gently sloping south-facing hillsides in the eastern portion of Wallingford offer ideal orientation for solar collection. These areas, particularly where agricultural land has been previously cleared, provide good solar exposure without the complications of steep terrain. The moderate elevations also typically experience less fog than the river valley. Former industrial or commercial sites in the flatter western portions of Wallingford present opportunities for solar development. These brownfield locations often feature large, open areas with minimal shading and existing access to electrical infrastructure. The relatively level terrain in these areas simplifies construction and installation processes. Agricultural lands throughout the region, particularly those with minimal tree cover and southern exposure, could accommodate solar arrays with minimal site preparation. Some farms in the area have already incorporated solar installations while maintaining agricultural activities beneath and around the panels. Areas to avoid for solar development include the steeper eastern slopes of the Metacomet Ridge, which may present installation challenges and potential erosion concerns. Additionally, the lowest portions of the Quinnipiac River valley may experience more frequent morning fog and potential flooding issues, reducing their suitability for large-scale solar installations. The moderately elevated plateaus northeast of the town center, with their combination of open space, favorable orientation, and proximity to existing transmission infrastructure, represent particularly promising locations for substantial solar PV development in the Wallingford 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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 5th of May 2025
Last Updated: Tuesday 30th of September 2025
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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.




