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Flag of United StatesSolar PV Analysis of Claymont, United States

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Claymont, United States (by season)

Claymont, Delaware is a moderately good location for year-round solar energy generation, though like most locations in the Northern Temperate Zone, it experiences significant seasonal variation in solar output.

Seasonal Solar Performance

The solar energy production at this location varies considerably throughout the year. Summer provides the strongest performance at 6.45 kWh per day for each kilowatt of installed solar capacity. Spring also offers excellent conditions with 5.57 kWh per day per kilowatt, making these two seasons the prime solar generation periods. Autumn sees a notable decline to 3.71 kWh per day per kilowatt, while winter represents the most challenging period with only 2.25 kWh per day per kilowatt. This winter figure is less than half the summer output, which is typical for mid-Atlantic locations but means solar systems need to be sized appropriately to meet energy needs during the darker months.

Optimal Panel Installation

For fixed panel installations at this Claymont location, the ideal tilt angle is 34 degrees facing south to maximize total year-round solar production. This angle represents the optimal compromise between capturing the high summer sun and the lower winter sun angles.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Claymont area can impact solar energy generation:
  • Coastal moisture and humidity from nearby Delaware River and Atlantic Ocean influence can create hazy conditions that reduce solar irradiance
  • Frequent cloud cover during autumn and winter months, typical of the mid-Atlantic climate
  • Snow accumulation during winter storms that can completely block panels
  • Salt air corrosion potential due to proximity to coastal areas
  • Tree coverage common in Delaware's suburban areas creating shading issues

Preventative Measures for Better Performance

To maximize solar production despite these challenges, several installation strategies prove effective. Choosing corrosion-resistant mounting hardware and panels with robust sealing helps combat salt air exposure. Installing panels at the proper 34-degree tilt angle not only optimizes sun exposure but also helps snow slide off more easily. Careful site selection away from large trees and buildings prevents shading, while regular cleaning schedules remove salt residue, pollen, and other debris that accumulates on panels. Consider installing micro-inverters or power optimizers to minimize the impact when individual panels are partially shaded or dirty. Professional installation with proper drainage and ventilation helps panels operate more efficiently and last longer in Delaware's humid climate conditions.

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 Claymont

Seasonal solar PV output for Latitude: 39.8044, Longitude: -75.4649 (Claymont, 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:

Summer
Average 6.45kWh/day in Summer.
Autumn
Average 3.71kWh/day in Autumn.
Winter
Average 2.25kWh/day in Winter.
Spring
Average 5.57kWh/day in Spring.

 

Ideally tilt fixed solar panels 34° South in Claymont, United States

To maximize your solar PV system's energy output in Claymont, United States (Lat/Long 39.8044, -75.4649) 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.

The sun
At Latitude: 39.8044, Longitude: -75.4649, the ideal angle to tilt panels is 34° South

Seasonally adjusted solar panel tilt angles for Claymont, 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 Claymont, 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 33° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Claymont, United States as follows: In Summer, set the angle of your panels to 23° facing South. In Autumn, tilt panels to 44° facing South for maximum generation. During Winter, adjust your solar panels to a 55° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 33° angle facing South to capture the most solar energy in Claymont, United States.

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 Claymont, 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 Claymont, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Claymont, United States

Topography Around Claymont

The topography around Claymont, Delaware is characterized by gently rolling hills and relatively flat terrain typical of the Atlantic Coastal Plain region. This area sits at a modest elevation of approximately 100 feet above sea level, with the landscape gradually sloping toward the Delaware River to the east. The terrain is part of the Piedmont Plateau's eastern edge, where it transitions into the coastal plain, creating a mix of low hills and broad, open valleys. The surrounding landscape features a series of gentle ridges running roughly north to south, with elevations rarely exceeding 200 feet above sea level. These low hills are interspersed with stream valleys and tributaries that drain eastward toward the Delaware River. The topography becomes increasingly flat as it approaches the river, with extensive areas of level ground that were historically used for agriculture and industrial development. Much of the land around Claymont consists of former farmland that has been converted to suburban and light industrial use. The soil composition includes clay deposits and glacial sediments, which have created relatively stable ground conditions. The area experiences minimal slope variation across large sections, with most gradients being less than five percent over extended distances.

Optimal Areas for Large-Scale Solar Development

The relatively flat terrain south and west of Claymont presents excellent opportunities for large-scale solar photovoltaic installations. These areas offer expansive tracts of level ground with minimal shading concerns from topographical features. The gentle slopes in these directions provide natural drainage while maintaining optimal angles for solar panel positioning. Former agricultural lands in the broader New Castle County area, particularly those located on the plateau sections west of Claymont, would be well-suited for solar development. These locations benefit from their elevated position above the immediate river valley, reducing concerns about flooding while maintaining relatively flat profiles ideal for ground-mounted solar arrays. The areas northwest toward Newark and southwest toward Middletown feature particularly favorable topography for solar installations. These regions contain large parcels of gently rolling terrain with southern exposures and minimal obstructions. The consistent elevation and open character of the landscape would allow for efficient solar farm layouts with minimal grading requirements. Industrial zones along the flatter portions near the Delaware River also present opportunities, though these areas would require careful consideration of existing infrastructure and zoning regulations. The level terrain in these industrial corridors could accommodate substantial solar installations while taking advantage of existing electrical grid connections and road access.

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

Article: Solar PV Analysis of Claymont, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 22nd of July 2025
Last Updated: Thursday 7th of August 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.

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