Cape Elizabeth, Maine, located in the Northern Temperate Zone, offers a varied potential for solar energy generation throughout the year. This coastal town experiences significant seasonal fluctuations in solar output, which impacts the overall efficiency of photovoltaic (PV) systems.

Seasonal Solar Performance

Summer stands out as the prime season for solar energy production in Cape Elizabeth, with an impressive daily output of 5.76 kWh per kW of installed solar capacity. Spring follows closely behind, generating 5.32 kWh per day. These seasons provide excellent opportunities for maximizing solar energy harvesting. However, the picture changes dramatically during the colder months. Autumn sees a considerable drop in production, yielding 3.24 kWh per day. Winter presents the biggest challenge, with daily output plummeting to a mere 1.90 kWh, less than a third of the summer production.

Optimizing Solar Panel Installation

To maximize year-round solar energy production in Cape Elizabeth, fixed solar panels should be tilted at a 38-degree angle facing south. This optimal angle takes into account the location's latitude and the sun's position throughout the year, ensuring the best possible exposure to sunlight across all seasons.

Environmental and Weather Considerations

Several factors can impact solar energy production in Cape Elizabeth: 1. Snowfall: Maine's winters can bring heavy snowfall, which may accumulate on solar panels and reduce their efficiency. Regular snow removal or the installation of panels at a steeper angle can help mitigate this issue. 2. Coastal weather: Being a coastal town, Cape Elizabeth can experience fog and overcast conditions, particularly in spring and fall. While these don't completely halt energy production, they can reduce overall efficiency. 3. Tree coverage: The area's abundant vegetation could potentially shade solar panels, especially in residential areas. Careful placement of panels and selective tree trimming can help maximize sun exposure. To address these challenges, consider installing panels with anti-soiling coatings to reduce snow and debris buildup. Additionally, using microinverters or power optimizers can help maintain production levels even when some panels are partially shaded or covered. In conclusion, while Cape Elizabeth's location presents some challenges for year-round solar energy production, particularly in winter, the strong performance during spring and summer makes it a viable option for renewable energy. With proper installation techniques and regular maintenance, solar PV systems can still provide significant energy contributions to local households and businesses.

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 Cape Elizabeth

Seasonal solar PV output for Latitude: 43.5637, Longitude: -70.2001 (Cape Elizabeth, 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 38° South in Cape Elizabeth, United States

To maximize your solar PV system's energy output in Cape Elizabeth, United States (Lat/Long 43.5637, -70.2001) throughout the year, you should tilt your panels at an angle of 38° 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 Cape Elizabeth, 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 Cape Elizabeth, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 38° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
27° South in Summer	48° South in Autumn	58° South in Winter	36° 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 Cape Elizabeth, 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 Cape Elizabeth, 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 Cape Elizabeth, United States

Cape Elizabeth, located in southern Maine, United States, is characterized by a diverse and picturesque topography that combines coastal features with inland landscapes. The area around Cape Elizabeth is primarily defined by its rocky shoreline, which stretches for several miles along the Atlantic Ocean. This coastline is punctuated by small beaches, coves, and dramatic cliffs that offer stunning views of the sea. Inland from the coast, the terrain gradually rises, forming gentle hills and rolling landscapes. The elevation generally increases as you move away from the shore, with the highest points reaching around 150 feet above sea level. This undulating topography creates a mix of open fields, forested areas, and wetlands throughout the region.

Nearby Areas Suitable for Large-Scale Solar PV

When considering areas nearby Cape Elizabeth for large-scale solar photovoltaic (PV) installations, several factors come into play. The most suitable locations would be those with ample open space, relatively flat terrain, and minimal shading from trees or structures. One potential area for solar development could be the agricultural lands to the west and northwest of Cape Elizabeth. These areas often feature expansive fields with fewer trees, providing ideal conditions for solar arrays. The gently rolling hills in this region could also be advantageous, as south-facing slopes can maximize solar exposure throughout the day. Another promising location might be found in the more inland areas to the north and northeast of Cape Elizabeth. These regions tend to have larger tracts of open land that are not as heavily forested as the immediate surroundings of Cape Elizabeth. The slightly higher elevations in these areas could also benefit from reduced fog and coastal cloud cover, potentially increasing the overall solar energy yield. It's important to note that while these areas may be topographically suitable for large-scale solar PV, any development would need to consider various other factors. These include local zoning regulations, environmental impact assessments, and the proximity to existing electrical infrastructure. Additionally, the scenic nature of the region and its importance for tourism and recreation would likely play a significant role in determining the feasibility and public acceptance of large-scale solar installations in the area.

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.