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Solar Energy in Westerly, RI

Solar Energy in Westerly

The month of July has the highest historical solar radition values in Westerly with an average of 5.87 kWh/m2/day. [More]

Solar Panels in Westerly

Solar panels in Westerly that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]

Sunrise & Sunset in Westerly

The total length of the day in Westerly, RI today (September 25, 2017) will be 11 hours and 59 minutes. [More]

Westerly, RI Solar Energy

Solar Power in Westerly, RI

Solar Energy Data in Westerly, RI

See the chart below to see how different types of solar panel installations compare in Westerly.

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day).
* See glossary & definitions below.


Solar Energy Analysis for Westerly, RI

Solar Radiation Data in Westerly

Based on historical Westerly, RI data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Westerly. [1]

Westerly has an average monthly Global Horizontal Irradiance (GHI) of 3.94 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 2% greater than the average monthly Direct Normal Irradiance (DNI) of 3.86 kWh/m2/day. [1]

Solar installations in Westerly that are always titled at the latitude of Westerly (Average Tilt at Latitude or ATaL) average 4.65 kWh/m2/day, or about 18% greater than the average monthly GHI of 3.94 kWh/m2/day and approximately 20% greater than the average monthly DNI of 3.86 kWh/m2/day. [1]

* See glossary & definitions below.

Solar Energy Glossary

Global Horizontal Irradiance (GHI)

Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.

Direct Normal Irradiance (DNI)

Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.

Average Tilt at Latitude (ATaL)

Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.

Compare Solar Quotes
Compare Solar Quotes

Solar Radiation Levels in Westerly

Solar Radiation Data in Westerly, RI

See the chart below for monthly solar radiation levels in Westerly.

* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)

Solar Radiation Analysis for Westerly, RI

Solar Radiation Data in Westerly

Westerly, RI has a average annual solar radiation value of 4.63 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Westerly is July with an average of 5.87 kWh/m2/day, followed by August at 5.77 kWh/m2/day and June at 5.58 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Westerly (Rhode Island) are December with an average of 2.8 kWh/m2/day, followed by November with an average of 3.27 kWh/m2/day and January at 3.32 kWh/m2/day. [1]

Solar Power Comparison: Westerly vs. the U.S.

Solar Power Levels in Westerly

The average monthly solar radiation level in Westerly, RI, of 4.63 kilowatt hours per square meter per day (kWh/m2/day) is approximately 24% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 30% less than the average level of 6.6 kWh/m2/day in a city with historically high levels (NV). [1]


→ Values listed as 0 (zero) are not available (N/A).

Solar Power: vs. the U.S.

Below is a month-by-month comparison of how average Westerly solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). [1]

→ k/m/d = kWh/m2/day = kilowatt hours per square meter per day.
→ Values listed as 0 (zero) are not available (N/A).

Compare Solar Quotes
Compare Solar Quotes

Solar Data & Statistics for Westerly

Sunrise / Sunset in Westerly

  • Sunrise/Sunset for September 25, 2017 [2]
    • Sunrise: 6:38 am
    • Sunset: 6:38 pm
    • Solar Noon: 12:38 pm
    • Length of Day: 11:59
Solar Energy Statistics for Westerly

Best Months for Solar in Westerly

  • Top Solar Power Months Historically [1]
    • Solar Radiation July (5.87 kWh/m2/day)
    • ATaL: July (5.58 kWh/m2/day)
    • DNI: July (4.67 kWh/m2/day)
    • GHI: July (5.96 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Westerly

We do not currently have data on solar panel installations in the town of Westerly, RI at this current time.

However, Westerly is in Washington County and Washington County has at least 122 solar insallations right now. [1]

Solar Power Output in Westerly

The Power of Solar in Westerly, RI

Monthly AC solar system output averages for Westerly (ri). Month-by-month solar power, as ranked by AC output, in Westerly. [2]

* Amounts listed in kWhac (kilowatt hours (AC))

Solar Output Analysis for Westerly, RI

Solar Radiation Data in Westerly

Westerly (RI) has a average annual solar AC output value of 5457.13 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Westerly is July with an average of 558.33 kWhac, followed by August at 551.13 kWhac and May at 530.58 kWhac. [2]

The three months that historically average the lowest average solar output levels in Westerly (Rhode Island) are December with an average of 296.33 kWhac, followed by November with an average of 326.41 kWhac and January at 355.76 kWhac. [2]

Cost of Utilities in Westerly

Westerly Electricity Costs

Electricity prices (residential) in Westerly averaged 16.71 cents per kilowatthour (¢/kWh) in June 2017, which was about 26% more than the overall U.S. average residential electricity rate of 13.22¢/kWh in June. [3]

Solar Power Poll: Westerly

Vote now: Given all of the data and analysis provided for Westerly, is solar power a good choice for residents of this town?

Yes, solar power is a great option  
No, solar power isn't a good option

Westerly Natural Gas Costs

Natural gas prices (residential) in Rhode Island averaged $16.38 per thousand cubic feet (Mcf) in June 2017, which was approximately 3% more than the overall U.S. average residential natural gas rate of $15.98 per Mcf in June. [4]

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Solar Businesses in Westerly

Solar Energy Contractors in Westerly

Contractors & builders that specialize in solar panel installations in or near Westerly, RI.

Sorry, no local solar energy contractors found.

Our search for solar contractors companies located in Westerly produced no matches.

Solar Energy Equipment in Westerly

Businesses that sell solar energy equipment and/or solar parts in or near Westerly, RI.

Sorry, no local business selling solar equipment were found.

Our search for companies selling solar parts located in Westerly produced no matches.

Energy Conservation Consultants in Westerly

Energy conservation specialists that offer consulting services in or near Westerly, RI.

Sorry, no local energy conservation specialists were found.

Our search for energy conservation specialists located in Westerly produced no matches.

Weather Forecast for Westerly, RI [5]

Sun Sep 24
62°F
Sky Is Clear
Min: 62°F
Max: 62°F
: 1 mps ESE
Precip.: n/a
Humidity: 95%
Cloud cover: 0%
Mon Sep 25
75°F
Sky Is Clear
Min: 62°F
Max: 78°F
Light breeze: 2 mps SSE
Precip.: n/a
Humidity: 68%
Cloud cover: 0%
Tue Sep 26
71°F
Moderate Rain
Min: 65°F
Max: 71°F
Gentle Breeze: 4 mps ENE
Precip.: Chance of Rain
Humidity: 85%
Cloud cover: 68%
Wed Sep 27
72°F
Light Rain
Min: 68°F
Max: 74°F
Gentle Breeze: 3 mps NE
Precip.: Chance of Rain
Humidity: 90%
Cloud cover: 88%
Thu Sep 28
68°F
Sky Is Clear
Min: 61°F
Max: 68°F
High wind, near gale: 14 mps NW
Precip.: n/a
Humidity: 0%
Cloud cover: 0%
Fri Sep 29
63°F
Sky Is Clear
Min: 59°F
Max: 65°F
Gale: 18 mps NW
Precip.: n/a
Humidity: 0%
Cloud cover: 0%

More about Westerly

About Westerly

The town of Westerly, RI in Washington County has an approximate population of 22,787. [6]

Westerly Solar Power

Westerly, RI Solar Energy

To learn more about solar energy and solar power Westerly, RI, or for more solar-related resources for Westerly, visit the U.S. Energy Information Administration.

Did you know?

Solar power is renewable, does not produce any pollutants and is one of the cleanest source of energy.

Other Cities in Rhode Island

References