Rehoboth, Massachusetts represents a moderately good location for year-round solar energy generation, though like most locations in the Northern Temperate Zone, it experiences significant seasonal variation in solar output.

Seasonal Solar Performance

The solar energy production at this location shows the typical pattern expected for New England. Summer months deliver the strongest performance at 6.08 kWh per day per kW of installed capacity, making this the ideal time for solar generation. Spring follows closely behind with 5.73 kWh per day per kW, offering nearly comparable output. Autumn sees a notable drop to 3.57 kWh per day per kW as daylight hours decrease and sun angles become less favorable. Winter presents the most challenging period for solar generation, producing only 2.09 kWh per day per kW of installed capacity.

Optimal Panel Configuration

For fixed panel installations at this Rehoboth location, the ideal tilt angle is 36 degrees facing south to maximize total year-round production. This angle is calculated based on the site's latitude and weighted solar irradiance data throughout the year, accounting for Earth's elliptical orbit and varying solar elevation angles.

Local Factors Affecting Solar Production

Several environmental and weather factors in this Massachusetts location can significantly impact solar energy output:

• Snow accumulation during winter months can completely block solar panels
• Frequent cloud cover and overcast conditions, particularly during autumn and winter
• Coastal humidity and salt air from nearby Rhode Island waters can create panel soiling
• Deciduous tree coverage that may cause seasonal shading issues

Preventative Measures for Better Performance

To maximize solar production despite these challenges, several installation strategies prove effective. Panel mounting systems should allow adequate spacing for snow to slide off naturally, and steeper tilt angles can help with snow shedding, though this must be balanced against optimal sun exposure angles. Regular cleaning schedules become important due to salt air and general atmospheric particles that accumulate on panel surfaces. Installing panels with anti-reflective coatings can help maintain efficiency even when some soiling occurs. Careful site selection during installation planning should account for both current tree coverage and future growth patterns. Trimming or removing trees that cast shadows during peak sun hours, particularly those affecting panels during the high-production summer and spring seasons, can significantly improve 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 Rehoboth

Seasonal solar PV output for Latitude: 41.8515, Longitude: -71.2545 (Rehoboth, 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 Rehoboth, United States

To maximize your solar PV system's energy output in Rehoboth, United States (Lat/Long 41.8515, -71.2545) 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 Rehoboth, 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 Rehoboth, 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 Rehoboth, 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 Rehoboth, 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 Rehoboth, United States

Topographical Features of the Rehoboth Region

The area around Rehoboth, Massachusetts sits within the gently rolling landscape characteristic of southeastern New England. This region features predominantly low hills and broad valleys with elevations typically ranging from 100 to 400 feet above sea level. The terrain consists of glacially-shaped landforms left behind by retreating ice sheets thousands of years ago, creating a relatively moderate topography without dramatic elevation changes or steep slopes. The landscape is dotted with numerous wetlands, small ponds, and seasonal streams that drain toward the larger river systems in the region. These water features create pockets of lower-lying areas interspersed throughout the otherwise gently undulating terrain. The soil composition varies from sandy loam in higher areas to more clay-rich deposits in the valleys and near water bodies. Forested areas cover much of the natural landscape, though agricultural fields and residential developments have created a patchwork of open spaces throughout the region. The tree cover consists primarily of mixed deciduous and coniferous species typical of southern New England, with oak, maple, pine, and birch being common varieties.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in the Rehoboth area would be the open agricultural fields and cleared areas situated on south-facing slopes or relatively flat terrain. These locations offer the dual advantages of minimal tree clearing requirements and favorable orientation for solar collection throughout the day. Former agricultural lands that have been taken out of active farming present particularly attractive opportunities, as they typically feature relatively level ground with established access roads and existing utility connections nearby. The gently rolling nature of the local topography means that many of these sites can accommodate solar arrays without requiring extensive grading or earthwork. Areas with elevations between 200 and 350 feet above sea level often provide the best combination of good drainage, minimal shading from surrounding terrain, and reasonable access for construction and maintenance activities. These moderate elevations help avoid both the poorly-drained lowlands near wetlands and streams, as well as the more heavily forested hilltops that would require significant tree removal. The proximity to existing electrical infrastructure along major roads and near residential or commercial developments makes certain locations more economically viable for solar development. Sites within reasonable distance of electrical substations or major transmission lines can significantly reduce the costs associated with connecting solar installations to the power grid. Careful consideration must be given to avoiding environmentally sensitive areas such as wetlands, vernal pools, and wildlife corridors that are common throughout this region. The ideal solar development sites would be those cleared areas that minimize impact on natural ecosystems while maximizing the available open space for panel installation.

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.