Selkirk, New York, located in the Northern Temperate Zone, offers variable conditions for solar PV energy generation throughout the year. The seasonal electricity output shows significant fluctuations that prospective solar adopters should consider when planning installations.
Seasonal Solar Production
Solar panels in Selkirk demonstrate strong performance during summer months, generating approximately 5.89kWh per day for each kilowatt of installed capacity. Spring follows closely behind with 5.24kWh/day per kW. However, production drops considerably during autumn to 3.17kWh/day, and reaches its lowest point in winter at just 1.72kWh/day per kW of capacity.
This pattern creates a substantial difference between summer and winter production, with summer generating more than three times the electricity compared to winter months. The significant seasonal variation suggests that solar installations here will produce approximately 70% of their annual energy during spring and summer combined.
Optimal Installation Angle
For fixed-panel solar installations in Selkirk, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This specific angle is calculated to optimize the annual solar harvest across all seasons, accounting for the Earth's elliptical orbit and the location's position in the Northern Hemisphere.
Environmental Considerations
Several environmental factors could potentially impact solar production in Selkirk:
- Snow accumulation during winter months can significantly reduce output, particularly given the already low winter production figures. Installing panels at the recommended 36-degree tilt helps facilitate snow sliding off panels, while snow removal systems may be necessary for optimal winter performance.
- Tree coverage in this region of New York can cast shadows on panels, particularly during morning and evening hours when the sun is lower. A thorough site assessment to identify potential shading issues is essential before installation.
- Selkirk experiences moderate rainfall throughout the year, which can temporarily reduce production. Self-cleaning panel coatings can help maintain efficiency during wet periods.
The substantial seasonal variation suggests that homeowners might consider oversizing their systems to accommodate winter shortfalls or implementing battery storage to bank excess summer production for use during lower-production months. Despite winter challenges, the strong spring and summer performance makes Selkirk a viable location for solar PV, particularly if installations are optimized for the local 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 Selkirk
Seasonal solar PV output for Latitude: 42.551, Longitude: -73.8172 (Selkirk, 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 Selkirk, United States
To maximize your solar PV system's energy output in Selkirk, United States (Lat/Long 42.551, -73.8172) 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 Selkirk, 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 Selkirk, 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 Selkirk, 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 Selkirk, 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 Selkirk, United States
The topography around Selkirk, New York, is characterized by gently rolling hills and shallow valleys typical of the Hudson Valley region. Located in Albany County, this area sits near the western bank of the Hudson River, with elevations generally ranging between 200 and 400 feet above sea level. The landscape has been shaped by glacial activity from the last ice age, resulting in a mix of glacial till deposits and exposed bedrock in some areas. The terrain around Selkirk features a blend of open spaces, wooded areas, and small waterways. Several creeks and streams crisscross the region, including the Vloman Kill and Normans Kill, which have carved modest valleys into the landscape. These waterways eventually drain into the Hudson River to the east. The area also contains scattered wetlands and small ponds, particularly in lower-lying areas where drainage is poor.
Solar PV Potential Areas
For large-scale solar photovoltaic installations, several nearby areas present favorable conditions. The most suitable locations would be found on the gently sloping, south-facing hillsides that receive consistent sunlight throughout the day. These areas benefit from optimal solar exposure while minimizing shadowing effects from surrounding terrain. Particularly promising are the open agricultural lands to the west and southwest of Selkirk. These areas feature cleared fields with minimal tree cover, relatively flat terrain, and good drainage characteristics. The slight elevation of these locations also reduces the risk of seasonal flooding that could damage solar infrastructure. Former industrial sites around Selkirk also present opportunities for solar development. These brownfield locations often feature large, flat areas with existing access to electrical infrastructure, making them cost-effective for conversion to solar farms. The presence of the railway and major transportation routes nearby would facilitate construction and maintenance access. Areas to avoid would include the steeper slopes along stream valleys, densely forested sections, and designated wetlands. These locations present challenges related to installation complexity, environmental impacts, and reduced solar efficiency due to shadowing. Additionally, the immediate floodplains of the Hudson River and its tributaries would be unsuitable due to flood risks. The underlying geology of stable bedrock throughout much of the region provides solid foundations for solar array mounting systems, while the moderate climate conditions avoid extreme weather events that might damage installations.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: Sunday 12th 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.




