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Solar Energy in Watertown, MA

Solar Energy in Watertown

The month of August has the highest historical solar radition values in Watertown with an average of 5.65 kWh/m2/day. [More]

Solar Panels in Watertown

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

Sunrise & Sunset in Watertown

The total length of the day in Watertown, MA today (January 15, 2019) will be 09 hours and 26 minutes. [More]

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Watertown, MA Solar Energy

Solar Power in Watertown, MA

Solar Energy Data in Watertown, MA

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

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


Solar Energy Analysis for Watertown, MA

Solar Radiation Data in Watertown

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

Watertown has an average monthly Global Horizontal Irradiance (GHI) of 3.8 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 3% greater than the average monthly Direct Normal Irradiance (DNI) of 3.69 kWh/m2/day. [1]

Solar installations in Watertown that are always titled at the latitude of Watertown (Average Tilt at Latitude or ATaL) average 4.49 kWh/m2/day, or about 18% greater than the average monthly GHI of 3.8 kWh/m2/day and approximately 22% greater than the average monthly DNI of 3.69 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.

Solar Radiation Levels in Watertown

Solar Radiation Data in Watertown, MA

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

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

Solar Radiation Analysis for Watertown, MA

Solar Radiation Data in Watertown

Watertown, MA has a average annual solar radiation value of 4.59 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Watertown is August with an average of 5.65 kWh/m2/day, followed by July at 5.6 kWh/m2/day and June at 5.41 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Watertown (Massachusetts) are December with an average of 2.95 kWh/m2/day, followed by November with an average of 3.13 kWh/m2/day and January at 3.36 kWh/m2/day. [1]

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

Solar Power Levels in Watertown

The average monthly solar radiation level in Watertown, MA, of 4.59 kilowatt hours per square meter per day (kWh/m2/day) is approximately 23% 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 Watertown 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).

Solar Data & Statistics for Watertown

Sunrise / Sunset in Watertown

  • Sunrise/Sunset for January 15, 2019 [2]
    • Sunrise: 8:10 am
    • Sunset: 5:37 pm
    • Solar Noon: 12:54 pm
    • Length of Day: 09:26
Solar Energy Statistics for Watertown

Best Months for Solar in Watertown

  • Top Solar Power Months Historically [1]
    • Solar Radiation August (5.65 kWh/m2/day)
    • ATaL: July (5.46 kWh/m2/day)
    • DNI: July (4.5 kWh/m2/day)
    • GHI: July (5.84 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Watertown

We do not currently have data on solar panel installations in the city of Watertown, MA at this current time.

However, Watertown is in Middlesex County and Middlesex County has at least 16,989 solar insallations right now. [1]

Solar Power Output in Watertown

The Power of Solar in Watertown, MA

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

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

Solar Output Analysis for Watertown, MA

Solar Radiation Data in Watertown

Watertown (MA) has a average annual solar AC output value of 5428.9 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Watertown is August with an average of 542.17 kWhac, followed by July at 537.21 kWhac and May at 526.1 kWhac. [2]

The three months that historically average the lowest average solar output levels in Watertown (Massachusetts) are December with an average of 310.82 kWhac, followed by November with an average of 315.1 kWhac and January at 358.5 kWhac. [2]

Cost of Utilities in Watertown

Watertown Electricity Costs

Electricity prices (residential) in Watertown averaged 21.30 cents per kilowatthour (¢/kWh) in October 2018, which was about 66% more than the overall U.S. average residential electricity rate of 12.87¢/kWh in October. [3]

Solar Power Poll: Watertown

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

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

Watertown Natural Gas Costs

Natural gas prices (residential) in Massachusetts averaged $13.28 per thousand cubic feet (Mcf) in October 2018, which was approximately 8% more than the overall U.S. average residential natural gas rate of $12.26 per Mcf in October. [4]

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Solar Businesses in Watertown

Solar Energy Contractors in Watertown

Contractors & builders that specialize in solar panel installations in or near Watertown, MA.

Sorry, no local solar energy contractors found.

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

Solar Energy Equipment in Watertown

Businesses that sell solar energy equipment and/or solar parts in or near Watertown, MA.

Sorry, no local business selling solar equipment were found.

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

Energy Conservation Consultants in Watertown

Energy conservation specialists that offer consulting services in or near Watertown, MA.

Sorry, no local energy conservation specialists were found.

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

Weather Forecast for Watertown, MA [5]

Tue Jan 15
29°F
Scattered Clouds
Min: 12°F
Max: 29°F
Gentle Breeze: 3 mps WNW
Precip.: n/a
Humidity: 56%
Cloud cover: 36%
Wed Jan 16
23°F
Sky Is Clear
Min: 8°F
Max: 33°F
Gentle Breeze: 5 mps SW
Precip.: Chance of Snow
Humidity: 67%
Cloud cover: 20%
Thu Jan 17
15°F
Sky Is Clear
Min: 10°F
Max: 21°F
Gentle Breeze: 4 mps NW
Precip.: n/a
Humidity: 38%
Cloud cover: 0%
Fri Jan 18
29°F
Light Snow
Min: 17°F
Max: 29°F
Moderate breeze: 6 mps WNW
Precip.: Chance of Snow
Humidity: 0%
Cloud cover: 0%
Sat Jan 19
34°F
Light Snow
Min: 12°F
Max: 48°F
Moderate breeze: 5 mps SSE
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 42%
Sun Jan 20
46°F
Snow
Min: 29°F
Max: 50°F
Strong breeze: 11 mps N
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 99%

More about Watertown

About Watertown

The city of Watertown, MA in Middlesex County has an approximate population of 31,915. [6]

Watertown Solar Power

Watertown, MA Solar Energy

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

Did you know?

Some tax incentives and rebate programs are designed to spur the use of solar energy. These vary by location.

Other Cities in Massachusetts

ZIP Codes in MA


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References