Stoneham, Massachusetts, located in the Northern Temperate Zone, presents a mixed picture for solar energy generation throughout the year. This location experiences significant seasonal variations in solar output, which impacts the overall efficiency of photovoltaic (PV) systems.
Seasonal Solar Performance
Summer stands out as the most productive season, with an impressive 5.72 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 5.37 kWh/day. These seasons offer ideal conditions for solar energy production, with longer days and more direct sunlight.
Autumn sees a noticeable decline in output, dropping to 3.29 kWh/day. Winter presents the biggest challenge, with production plummeting to just 1.95 kWh/day per installed kilowatt. This significant seasonal variation highlights the importance of proper system sizing to meet year-round energy needs.
Optimal Panel Positioning
To maximize year-round solar production in Stoneham, fixed panels should be tilted at a 37-degree angle facing south. This optimal angle takes into account the location's latitude and seasonal sun paths, ensuring the best possible energy capture across all seasons.
Environmental Considerations
While Stoneham's location is generally favorable for solar energy, there are some environmental factors to consider:
- Snow accumulation in winter can temporarily reduce panel efficiency
- Tree cover and shading from nearby buildings may impact some installations
To mitigate these issues, installers should consider using snow-shedding panel designs, implementing regular maintenance schedules for snow removal, and carefully assessing potential shading issues before installation. Additionally, micro-inverters or power optimizers can help minimize the impact of partial shading on overall system performance.
In conclusion, while Stoneham experiences significant seasonal variations in solar output, proper system design and installation practices can help maximize energy production throughout the year. The location remains viable for solar PV systems, especially during the highly productive 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 Stoneham
Seasonal solar PV output for Latitude: 42.4843, Longitude: -71.0952 (Stoneham, 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 37° South in Stoneham, United States
To maximize your solar PV system's energy output in Stoneham, United States (Lat/Long 42.4843, -71.0952) throughout the year, you should tilt your panels at an angle of 37° 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 Stoneham, 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 Stoneham, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 26° South in Summer | 47° South in Autumn | 57° South in Winter | 35° 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 Stoneham, 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 Stoneham, 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 Stoneham, United States
The topography around Stoneham, Massachusetts, is characterized by gently rolling hills and low-lying areas typical of the New England region. Located just north of Boston, Stoneham sits in a landscape shaped by glacial activity thousands of years ago. The terrain features a mix of small hills, shallow valleys, and scattered wetlands and ponds. To the west of Stoneham, the land gradually rises towards the Middlesex Fells Reservation, a protected area of forested hills and rocky outcrops. This area provides a scenic backdrop to the town and offers some of the higher elevations in the immediate vicinity. To the east, the land slopes gently towards the coast, with more urbanized areas and fewer natural features. The area around Stoneham is dotted with small bodies of water, including Spot Pond to the south and Crystal Lake within the town itself. These water features contribute to the varied topography and create picturesque scenes throughout the region. The landscape is also marked by numerous streams and brooks that wind their way through the terrain, further diversifying the topographical features.
Potential Areas for Large-Scale Solar PV
When considering areas near Stoneham for large-scale solar PV installations, several factors come into play. The ideal locations would be relatively flat, open spaces with good sun exposure and minimal shading from trees or buildings. Given the topography and development patterns of the region, finding extensive suitable areas may be challenging, but there are potential options to explore. One possibility could be former industrial sites or brownfields in nearby communities. These areas often provide large, open spaces that are already cleared and may not be suitable for other types of development. Towns like Woburn or Reading, which are close to Stoneham, might have such sites available. Another option could be to look at larger agricultural areas slightly further from Stoneham, perhaps to the north or northwest. While much of the immediate surroundings are suburban or protected forest, moving further out may reveal more expansive open spaces that could accommodate large-scale solar installations. It's important to note that any large-scale solar project would need to carefully consider local zoning regulations, environmental impacts, and community concerns. The hilly nature of much of the surrounding area may limit options, but creative solutions such as using south-facing slopes could potentially be explored. Additionally, partnerships with local municipalities or large property owners could potentially unlock suitable spaces for solar development in the region around Stoneham.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.
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.




