Greenville, Rhode Island presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations typical of the Northern Temperate Zone climate.

Seasonal Solar Performance

The solar energy output at this location shows strong seasonal patterns. Summer delivers the highest production at 6.08 kWh per day per installed kilowatt, making it the peak season for solar generation. Spring follows closely behind with 5.73 kWh per day, representing nearly equivalent performance to summer months. Autumn sees a notable decline to 3.57 kWh per day, while winter presents the most challenging period with only 2.09 kWh per day. This winter output represents just over one-third of summer production, highlighting the significant seasonal variation characteristic of this latitude. For optimal year-round energy capture, solar panels should be installed at a fixed tilt angle of 36 degrees facing south. This angle maximizes total annual production by accounting for the sun's changing position throughout the year and weighting the optimal angles based on solar irradiance potential.

Local Factors Affecting Solar Production

Several environmental and weather factors in Greenville could impact solar energy generation:

• Snow accumulation during winter months can block panels and reduce output
• Ice formation may create safety hazards and temporary production losses
• Coastal proximity brings salt air that can corrode equipment over time
• New England's variable weather patterns include frequent cloud cover and storms
• Deciduous trees common in Rhode Island may cause seasonal shading issues

Preventative Installation Measures

To maximize solar production despite these challenges, several installation strategies prove effective. Panels should be mounted with adequate tilt to promote natural snow shedding, and sufficient spacing between panel rows prevents snow buildup from casting shadows on adjacent panels. Choosing marine-grade mounting hardware and components with enhanced corrosion resistance helps combat salt air exposure. Regular cleaning schedules become particularly important in coastal environments to remove salt deposits and debris. Careful site selection avoiding areas prone to tree shading, especially during peak production months, ensures optimal performance. Installing panels with easy access for snow removal and maintenance also helps maintain consistent output during challenging weather periods. Overall, while Greenville experiences typical Northern Temperate Zone seasonal variations, proper installation techniques and equipment selection can help maximize the location's solar energy potential throughout the year.

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 Greenville, Rhode Island

Seasonal solar PV output for Latitude: 41.8701, Longitude: -71.5595 (Greenville, Rhode Island, 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 Greenville, Rhode Island, United States

To maximize your solar PV system's energy output in Greenville, Rhode Island, United States (Lat/Long 41.8701, -71.5595) 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 Greenville, Rhode Island, 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 Greenville, Rhode Island, 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
25° South in Summer	46° South in Autumn	56° 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 Greenville, Rhode Island, 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 Greenville, Rhode Island, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Greenville, Rhode Island, United States

Topographical Features Around Greenville

The area surrounding Greenville in Rhode Island is characterized by gently rolling hills and relatively modest elevation changes typical of southern New England's coastal plain region. The terrain consists primarily of low-lying hills that rarely exceed 200 feet above sea level, creating a landscape that undulates softly across the region. These gradual slopes and rounded hilltops are remnants of ancient glacial activity that shaped much of Rhode Island's topography thousands of years ago. The region features a mix of forested areas, agricultural land, and suburban development interspersed throughout the rolling countryside. Small streams and seasonal waterways wind through the valleys between hills, creating natural drainage patterns that have influenced both historical settlement patterns and modern land use. The soil composition varies from sandy loam in higher areas to richer, more fertile soils in the valley bottoms where water naturally collects.

Elevation Patterns and Slope Characteristics

Moving outward from Greenville, the topography becomes increasingly varied with some areas rising to more substantial hills, particularly toward the northwest where the terrain begins to transition into the more rugged landscape of western Rhode Island. The eastern areas tend to flatten out as they approach the coastal plain, while southern sections maintain the characteristic gentle rolling pattern. Most slopes in the immediate vicinity are gradual enough to support various types of development and land use without significant grading or engineering challenges. The highest points in the surrounding area offer commanding views across the region but are still modest by mountainous standards. These elevated areas are often wooded and provide natural windbreaks and wildlife corridors. The overall drainage pattern flows generally eastward and southward toward Narragansett Bay and its tributaries.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in this region would be the gently sloping south-facing hillsides that receive maximum solar exposure throughout the day. These areas combine favorable orientation with manageable grades that minimize construction and maintenance costs. The rolling nature of the terrain means that many sites offer natural southern exposure without requiring extensive site preparation. Large, relatively flat agricultural fields scattered throughout the area present excellent opportunities for solar development, particularly those that are no longer actively farmed or are marginally productive. These sites typically have existing road access and electrical infrastructure nearby, reducing development costs. Areas with gentle slopes of less than fifteen degrees are particularly well-suited, as they allow for optimal panel positioning while maintaining good drainage. The elevated plateaus and broad hilltops in the region offer another category of prime solar real estate. These locations benefit from minimal shading from surrounding terrain and often have good wind circulation that helps keep solar panels cool and operating efficiently. Former agricultural land on these elevated areas is especially attractive for solar development due to existing clearing and relatively stable soil conditions. Areas to avoid for large-scale solar installations include the steeper north-facing slopes that receive limited direct sunlight, heavily forested areas where clearing would be environmentally problematic or cost-prohibitive, and low-lying areas prone to seasonal flooding or poor drainage. The numerous small valleys and hollows throughout the region, while scenic, are generally less suitable due to potential shading issues and drainage concerns.

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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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.