Hyannis, Massachusetts, located in the Northern Temperate Zone, presents a moderately favorable environment for solar PV energy generation throughout the year. The location's seasonal solar output varies significantly, with peak production occurring during the summer months.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive 6.05 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 5.71 kWh/day. Autumn sees a noticeable decrease in output, producing 3.56 kWh/day, while winter experiences the lowest generation at 2.04 kWh/day.
The substantial difference between summer and winter production highlights the impact of seasonal variations on solar energy generation in Hyannis. This pattern is typical for locations in the Northern Temperate Zone, where daylight hours and sun angle change dramatically throughout the year.
Optimal Panel Placement
To maximize year-round solar energy production in Hyannis, fixed solar panels should be tilted at a 36-degree angle facing south. This optimal angle takes into account the location's latitude and seasonal sun paths, ensuring the best possible exposure to sunlight throughout the year.
Environmental Considerations
While Hyannis offers good potential for solar energy, there are some environmental factors to consider. The coastal location means salt air exposure, which can potentially corrode solar equipment over time. To mitigate this, installers should use marine-grade materials and apply protective coatings to panels and mounting hardware.
Snowfall during winter months can temporarily reduce solar output. However, the panels' tilt angle often allows snow to slide off naturally. In cases of heavy accumulation, snow removal may be necessary to maintain efficiency.
Hyannis also experiences occasional severe weather, including hurricanes and nor'easters. Solar installations should be designed to withstand high winds and flying debris. Using sturdy mounting systems and impact-resistant panels can help ensure the longevity and reliability of the solar array.
Conclusion
Despite some challenges, Hyannis presents a viable location for solar PV energy generation. With proper installation techniques and preventative measures, solar panels can effectively harness the abundant summer and spring sunlight, while still providing meaningful output during the less productive autumn and winter 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 Hyannis
Seasonal solar PV output for Latitude: 41.6463, Longitude: -70.2751 (Hyannis, 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 Hyannis, United States
To maximize your solar PV system's energy output in Hyannis, United States (Lat/Long 41.6463, -70.2751) 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 Hyannis, 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 Hyannis, 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 Hyannis, 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 Hyannis, 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 Hyannis, United States
Hyannis, located on Cape Cod in Massachusetts, United States, is characterized by a relatively flat coastal topography typical of the region. The area around Hyannis features gently rolling terrain with low-lying hills and shallow depressions. The landscape is a mix of sandy beaches, salt marshes, and wooded areas, with numerous small ponds and wetlands scattered throughout. The coastline near Hyannis is marked by sandy beaches and dunes, gradually giving way to more stable ground inland. The terrain is generally low-lying, with elevations rarely exceeding 50 feet above sea level. This flat topography is a result of glacial activity during the last ice age, which shaped the Cape Cod peninsula. Inland from the coast, the landscape becomes slightly more varied, with subtle changes in elevation creating a patchwork of small hills and shallow valleys. These areas are often covered with mixed forests of pine and oak trees, interspersed with open fields and residential developments.
Potential for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The ideal locations would be relatively flat, open areas with good sun exposure and minimal shading from trees or buildings. Some of the most promising areas for solar PV development near Hyannis would likely be found slightly inland, away from the immediate coastal zone. These areas often feature larger tracts of open land that have been cleared for agriculture or other purposes. The gently rolling terrain in these locations can provide good southern exposure for solar panels, maximizing their efficiency. Former agricultural fields or abandoned industrial sites could be particularly well-suited for solar development. These areas typically offer large, unobstructed spaces that can accommodate extensive arrays of solar panels. Additionally, utilizing such sites for renewable energy production can be an effective way to repurpose land that might otherwise remain unused. It's important to note, however, that the development of large-scale solar projects in the Cape Cod region would need to carefully consider environmental impacts and local zoning regulations. The area's unique ecosystem and popular tourist destinations may limit the available locations for such installations. Careful planning and community engagement would be essential to identify suitable sites that balance energy production with environmental conservation and local interests.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: Thursday 27th of March 2025
Last Updated: Monday 21st of July 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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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.




