Solar Energy Potential in Watertown, New York
Watertown, New York, located in the Northern Temperate Zone, presents a mixed opportunity for solar PV energy generation throughout the year. The location experiences significant seasonal variations in solar electricity production that potential solar adopters should consider. The seasonal performance shows a stark contrast between summer and winter months. During summer, each kilowatt of installed solar capacity generates a robust 5.84 kWh per day, making it the most productive season. Spring follows closely with 5.18 kWh daily output per kilowatt installed. However, autumn sees a substantial drop to 2.79 kWh per day, while winter performance plummets to just 1.48 kWh daily per kilowatt of installed capacity. For those installing fixed solar panels in Watertown, the ideal tilt angle to maximize year-round energy production is 37 degrees facing South. This angle has been calculated by analyzing daily solar elevation patterns at this latitude and weighting them against potential PV output throughout the year.Environmental and Weather Challenges
Several significant local factors can impede solar production in Watertown:- Heavy snowfall: Watertown lies in New York's "snow belt" and typically receives substantial winter accumulation that can cover panels and reduce or eliminate production
- Cloud cover: The region experiences frequent overcast conditions, particularly during winter months
- Cold temperatures: While cooler temperatures can improve panel efficiency, extremely cold conditions can affect overall system performance
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 Watertown, New York
Seasonal solar PV output for Latitude: 43.9771, Longitude: -75.9093 (Watertown, New York, 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 Watertown, New York, United States
To maximize your solar PV system's energy output in Watertown, New York, United States (Lat/Long 43.9771, -75.9093) 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 Watertown, New York, 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 Watertown, New York, 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 |
|---|---|---|---|
| 28° South in Summer | 48° South in Autumn | 58° South in Winter | 37° 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 Watertown, New York, 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 Watertown, New York, 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 Watertown, New York, United States
The topography around Watertown, New York, is characterized by a diverse landscape shaped by ancient glacial activity. Located in Jefferson County in the northern part of New York State, Watertown sits in a region known as the Black River Valley. The city itself is positioned along the Black River, which has carved a significant valley through the surrounding terrain. This river, which flows northwestward to Lake Ontario, has been instrumental in shaping the local landscape and provided the original hydropower that enabled Watertown's early industrial development. The terrain surrounding Watertown features gently rolling hills that gradually rise from the Black River Valley. These hills are remnants of glacial deposits from the last ice age, when massive ice sheets covered the region. As these glaciers retreated, they left behind a mixture of till, moraines, and drumlins that contribute to the undulating nature of the landscape. The elevation in the immediate vicinity of Watertown ranges from approximately 400 to 700 feet above sea level, with gradual transitions between higher and lower areas.
Surrounding Geographic Features
To the north of Watertown lies the St. Lawrence River Valley and the Thousand Islands region, where the topography becomes more varied with numerous small islands and waterways. The St. Lawrence Lowlands extend across this northern section, creating relatively flat to gently rolling terrain. To the east of Watertown rise the foothills of the Adirondack Mountains. As one moves eastward, the landscape becomes progressively more rugged, with higher elevations and steeper slopes. The western edge of the Adirondack Park, with its distinctive mountainous topography, begins approximately 30 miles east of Watertown. To the south, the Tug Hill Plateau presents a significant topographic feature. This elevated tableland rises gradually from the surrounding lowlands to reach heights of over 2,000 feet. The Tug Hill region is known for its substantial snowfall and relatively flat plateau surface. To the west of Watertown, the land gradually slopes downward toward Lake Ontario, about 10 miles away. This area features relatively flat to gently rolling terrain typical of lake plains, with occasional drumlins creating low, elongated hills.Potential Areas for Solar PV Development
When considering large-scale solar photovoltaic (PV) development near Watertown, several areas present favorable topographic conditions. The gently sloping agricultural lands to the south and west of the city offer particularly promising sites. These areas combine relatively flat terrain with good solar exposure, minimal shading concerns, and often have existing access to transportation infrastructure and transmission lines. The northern portions of the Tug Hill Plateau, specifically the more gently sloping western edges, could also accommodate large-scale solar installations. While the plateau experiences significant snowfall in winter, its elevated position and relatively open landscape provide good solar exposure during clear weather periods. Areas to avoid for solar development would include the steeper eastern regions approaching the Adirondacks, where rugged terrain would complicate construction and potentially create shading issues. Similarly, the immediate river valleys with their steeper slopes and potential for flooding would be less suitable. The agricultural plains extending west toward Lake Ontario represent perhaps the most promising region for large-scale solar development. This area combines favorable topography with proximity to existing transmission infrastructure connecting Watertown to Syracuse and other population centers. These relatively flat former glacial lake plains have the additional advantage of being less prone to shading from topographic features, maximizing potential solar exposure throughout the day.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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 2nd of June 2025
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
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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.




