Middletown, Delaware, located in the Northern Temperate Zone, offers a moderately favorable environment for solar PV energy generation. The location's potential for solar power varies significantly throughout the year, with peak performance during the summer months and reduced output in winter.
Seasonal Solar Performance
Solar energy production in Middletown fluctuates across the four seasons:
- Summer: 6.47 kWh/day per kW installed
- Spring: 5.62 kWh/day per kW installed
- Autumn: 3.79 kWh/day per kW installed
- Winter: 2.32 kWh/day per kW installed
Optimal Panel Tilt
For fixed panel installations in Middletown, the ideal tilt angle to maximize year-round solar production is 34 degrees facing South. This angle takes into account the location's latitude and the sun's position throughout the year, ensuring optimal exposure to sunlight across all seasons.
Environmental Factors
While Middletown's location is generally suitable for solar energy production, there are some environmental factors that could potentially impact efficiency:
- Snow accumulation in winter months can temporarily reduce panel output
- Occasional severe weather events, such as hurricanes or nor'easters, may pose risks to solar installations
Overall, while Middletown experiences significant seasonal variations in solar potential, its location still provides a viable opportunity for solar PV energy generation, particularly during the spring and summer months.
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 Middletown, Delaware
Seasonal solar PV output for Latitude: 39.4851, Longitude: -75.6794 (Middletown, Delaware, 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 34° South in Middletown, Delaware, United States
To maximize your solar PV system's energy output in Middletown, Delaware, United States (Lat/Long 39.4851, -75.6794) throughout the year, you should tilt your panels at an angle of 34° 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 Middletown, Delaware, 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 Middletown, Delaware, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 23° South in Summer | 44° South in Autumn | 55° South in Winter | 32° 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 Middletown, Delaware, 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 Middletown, Delaware, 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 Middletown, Delaware, United States
The topography around Middletown, Delaware (located at 39.4851°N, 75.6794°W) is generally characterized by gently rolling terrain with relatively low elevation changes. This area is part of the Atlantic Coastal Plain, which extends from the eastern seaboard inland for several miles. The landscape is predominantly flat to slightly undulating, with occasional small hills and shallow valleys.
The region surrounding Middletown features a mix of agricultural lands, suburban developments, and patches of woodland. The terrain gradually slopes downward as you move eastward towards the Delaware Bay and Atlantic Ocean. To the west, the land becomes slightly more elevated and rolling as it transitions into the Piedmont region.
Regarding areas nearby that would be most suited for large-scale solar PV (photovoltaic) installations, several factors come into play. The ideal locations would have the following characteristics:
- Large, open spaces with minimal shading from trees or buildings
- Relatively flat terrain to reduce installation costs and maximize sun exposure
- Proximity to existing electrical infrastructure for easy grid connection
- Areas with lower agricultural or ecological value to minimize land-use conflicts
Based on these criteria, the most suitable areas for large-scale solar PV near Middletown would likely be found in the following locations:
1. Former agricultural lands or fallow fields to the south and west of Middletown, where large, open spaces are more readily available.
2. Areas along major roadways or near existing power infrastructure, such as the lands surrounding Route 1 or Route 13, which could provide easier access to the electrical grid.
3. Brownfield sites or previously developed areas that are no longer in use, which could be repurposed for solar energy production without impacting undisturbed natural habitats.
4. Large, flat rooftops of industrial or commercial buildings in the outskirts of Middletown, which could accommodate smaller-scale but still significant solar installations.
It's important to note that any large-scale solar PV project would require detailed site assessments, environmental impact studies, and compliance with local zoning and land-use regulations before implementation.
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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 24th of September 2024
Last Updated: Monday 21st of July 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!

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.




