Solar PV Analysis of Chelsea, United States
Chelsea, Vermont, located in the Northern Temperate Zone, offers a mixed potential for solar energy generation throughout the year. This location experiences significant seasonal variations in solar output, which impacts the overall effectiveness of solar PV installations.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Chelsea, with an impressive 5.70 kWh per day output for each kilowatt of installed solar capacity. Spring follows closely behind, generating 5.15 kWh per day. However, the performance drops considerably during autumn, with only 3.05 kWh per day, and reaches its lowest point in winter, producing a mere 1.73 kWh per day.
These figures highlight that Chelsea's solar potential is heavily skewed towards the warmer months, particularly from late spring through early fall. During this period, longer days and higher sun angles contribute to optimal solar energy production.
Optimizing Solar Panel Installation
To maximize year-round solar energy production in Chelsea, fixed solar panels should be installed at a tilt angle of 38 degrees facing south. This angle has been calculated to provide the best overall performance across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental and Weather Considerations
Chelsea's location in Vermont presents some challenges for solar energy production. The region experiences significant snowfall during winter months, which can cover solar panels and reduce their efficiency. To mitigate this issue, installing panels at a steeper angle can help snow slide off more easily. Additionally, using snow-shedding systems or regular panel cleaning during winter can maintain better performance.
Another factor to consider is the prevalence of deciduous trees in the area. During summer, these trees provide ample shade, which could potentially obstruct sunlight from reaching solar panels. When installing solar systems, it's crucial to carefully assess the surrounding vegetation and consider trimming or removing trees that might cast shadows on the panels.
Lastly, Chelsea experiences a fair number of overcast days throughout the year, particularly during fall and winter. While modern solar panels can still generate some electricity in cloudy conditions, their output is significantly reduced. Investing in high-efficiency panels and potentially oversizing the system can help compensate for these less productive periods.
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 Chelsea
Seasonal solar PV output for Latitude: 43.9898, Longitude: -72.4476 (Chelsea, 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 38° South in Chelsea, United States
To maximize your solar PV system's energy output in Chelsea, United States (Lat/Long 43.9898, -72.4476) throughout the year, you should tilt your panels at an angle of 38° 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 Chelsea, 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 Chelsea, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 38° 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 | 59° 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 Chelsea, 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 Chelsea, 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 Chelsea, United States
The area around Chelsea, Vermont (located at 43.9898°N, 72.4476°W) is characterized by a diverse and hilly topography typical of the Green Mountain region. This part of Vermont features rolling hills, small valleys, and scattered woodlands, creating a picturesque landscape that is both beautiful and challenging for development.
The terrain in and around Chelsea is generally uneven, with elevations varying from around 600 to 1,500 feet above sea level. The town itself is situated in a relatively flat area surrounded by higher hills and ridges. Several small streams and brooks run through the region, carving gentle valleys between the hills.
As you move away from the town center, the landscape becomes more rugged, with steeper slopes and denser forested areas. The Green Mountains, which form the backbone of Vermont, are not far to the west, contributing to the overall hilly nature of the region.
Areas Suitable for Large-Scale Solar PV
When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, there are several factors to consider. The ideal locations would have the following characteristics:
- Relatively flat or gently sloping land
- Southern exposure
- Minimal shading from trees or hills
- Proximity to existing electrical infrastructure
- Areas that are not prime agricultural land or ecologically sensitive
Given these criteria, the most suitable areas for large-scale solar PV near Chelsea would likely be found in the broader, flatter valleys to the east and southeast of the town. These areas tend to have more open spaces and gentler slopes, which are better suited for solar panel installation.
Specifically, the areas along Route 110 heading towards Tunbridge and South Royalton might offer potential sites. These locations have some larger, open fields that could accommodate solar arrays while still being relatively close to existing infrastructure.
However, it's important to note that any large-scale solar development would need to be carefully planned and assessed. The rural and scenic nature of the region, as well as the importance of agriculture to the local economy, means that there may be competing interests to consider when identifying suitable locations for solar PV 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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 14th of October 2024
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.
