Ludlow, Massachusetts, in the United States, offers a moderately favorable location for solar PV energy generation, with significant seasonal variations in output throughout the year. Located in the Northern Temperate Zone, this specific site experiences pronounced differences in solar production between summer and winter months.
Seasonal Solar Production
The solar energy potential at this location shows strong seasonal patterns. Summer stands out as the most productive season, generating approximately 5.70 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind with 5.34 kWh/day per installed kilowatt. There's a noticeable drop in autumn, with production falling to 3.22 kWh/day, while winter experiences the lowest output at just 1.86 kWh/day per kilowatt of installed capacity.
The peak generation period spans from late spring through early fall, making May through September the ideal months for solar energy production in Ludlow. During these months, homeowners and businesses can expect to generate significantly more electricity than during the winter period.
Optimal Panel Installation
For fixed solar panel installations at this Ludlow location, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This specific angle has been calculated to optimize annual solar collection based on Ludlow's geographical position, taking into account the weighted solar potential throughout the year.
Environmental Considerations
Several environmental factors could potentially impact solar production at this Massachusetts location:
- Snow accumulation during winter months can significantly reduce output by covering panels, requiring regular clearing or steep installation angles to promote natural snow sliding
- Deciduous tree coverage can cast shadows, particularly problematic during lower-sun winter months when production is already diminished
- New England's variable weather patterns, including cloudy days and occasional severe weather events, may temporarily reduce generation
Preventative Measures
To maximize solar production in Ludlow despite these challenges, several installation strategies can be employed. Installing panels at the recommended 36-degree tilt not only optimizes year-round production but also helps shed snow more effectively. Strategic tree trimming or removal around the installation area can minimize shading issues, particularly on the southern exposure. Additionally, using microinverters or power optimizers can help mitigate production losses when partial shading occurs.
While winter production is notably lower than summer, the strong performance in spring and summer makes this location viable for solar PV systems, especially when properly designed with these local conditions in mind.
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 Ludlow
Seasonal solar PV output for Latitude: 42.1719, Longitude: -72.4721 (Ludlow, 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 Ludlow, United States
To maximize your solar PV system's energy output in Ludlow, United States (Lat/Long 42.1719, -72.4721) 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 Ludlow, 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 Ludlow, 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 |
|---|---|---|---|
| 26° South in Summer | 46° 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 Ludlow, 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 Ludlow, 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 Ludlow, United States
The topography around Ludlow, Massachusetts showcases a diverse landscape characteristic of the western part of the state. Situated in Hampden County, Ludlow lies in the Pioneer Valley region along the eastern bank of the Chicopee River. The area features gently rolling hills interspersed with flat river valleys, creating a varied terrain that rises gradually from west to east. The western portion of Ludlow, near the Chicopee River, has relatively flat floodplains that give way to more elevated terrain as one moves eastward. The elevation in Ludlow ranges approximately from 200 to 600 feet above sea level, with several hills punctuating the landscape. This moderate relief is part of the broader Connecticut River Valley system, where glacial activity during the last ice age shaped much of the current topography.
Notable Topographical Features
To the east of Ludlow, the terrain becomes more pronounced with higher hills that eventually transition into the Central Uplands of Massachusetts. These hills are typically covered with mixed hardwood forests, though many areas have been cleared for agricultural use or development. Several water bodies dot the landscape, including Minechoag Pond and smaller streams that feed into the Chicopee River watershed. The area also contains some wetlands, particularly in low-lying areas near water bodies, which create natural breaks in the otherwise developable land. The soil composition varies throughout the region, with sandier soils near riverbanks and richer, loamy soils in upland areas.Solar PV Potential Areas
For large-scale solar PV installations, several areas around Ludlow present favorable conditions based on topographical considerations. The most suitable locations would be: The gently sloping south-facing hillsides throughout the region offer ideal orientation for solar collection. These areas receive consistent sun exposure throughout the day and typically have well-drained soil conditions that simplify construction and maintenance. Former agricultural lands on the outskirts of Ludlow, particularly to the east and northeast, provide large, contiguous spaces with minimal shading from natural features. These areas often have established access roads and are already somewhat cleared, reducing development costs. Reclaimed industrial sites along the Chicopee River corridor represent another opportunity. These brownfield locations often have minimal ecological value in their current state and could be repurposed for renewable energy production without impacting undisturbed natural areas. Areas with thin forest cover on elevated plateaus also show promise, as they would require less extensive clearing while benefiting from reduced shading concerns. Several such plateaus exist in the eastern portions of the region. The relatively flat terrain north of the town center contains open spaces that would minimize the need for extensive grading during installation. These areas also tend to be closer to existing electrical infrastructure, potentially reducing interconnection costs. It's worth noting that while the topography is generally conducive to solar development, site-specific factors such as wetland boundaries, protected habitats, and local zoning regulations would need to be considered during detailed site selection processes. The moderate hills in the region rarely present slopes steep enough to significantly complicate installation or reduce efficiency of solar arrays.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: Sunday 11th of May 2025
Last Updated: Monday 13th of October 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.




