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Solar Energy in Portland, ME

Solar Energy in Portland

The month of July has the highest historical solar radition values in Portland with an average of 5.73 kWh/m2/day. [More]

Solar Panels in Portland

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

Sunrise & Sunset in Portland

The total length of the day in Portland, ME today (October 23, 2017) will be 10 hours and 34 minutes. [More]

Portland, ME Solar Energy

Solar Power in Portland, ME

Solar Energy Data in Portland, ME

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

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


Solar Energy Analysis for Portland, ME

Solar Radiation Data in Portland

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

Portland has an average monthly Global Horizontal Irradiance (GHI) of 3.83 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 7% less than the average monthly Direct Normal Irradiance (DNI) of 4.14 kWh/m2/day. [1]

Solar installations in Portland that are always titled at the latitude of Portland (Average Tilt at Latitude or ATaL) average 4.63 kWh/m2/day, or about 21% greater than the average monthly GHI of 3.83 kWh/m2/day and approximately 12% greater than the average monthly DNI of 4.14 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 Portland

Solar Radiation Data in Portland, ME

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

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

Solar Radiation Analysis for Portland, ME

Solar Radiation Data in Portland

Portland, ME has a average annual solar radiation value of 4.67 kilowatt hours per square meter per day (kWh/m2/day). [1]

The month with the highest historical solar radition values in Portland is July with an average of 5.73 kWh/m2/day, followed by August at 5.56 kWh/m2/day and June at 5.37 kWh/m2/day. [1]

The three months that historically average the lowest average solar radiation levels in Portland (Maine) are December with an average of 2.92 kWh/m2/day, followed by November with an average of 3.12 kWh/m2/day and January at 3.64 kWh/m2/day. [1]

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

Solar Power Levels in Portland

The average monthly solar radiation level in Portland, ME, of 4.67 kilowatt hours per square meter per day (kWh/m2/day) is approximately 25% greater than the average level of 3.73 kWh/m2/day in a city with historically low levels (WA) and is approximately 29% 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 Portland 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).

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Compare Solar Quotes

Solar Data & Statistics for Portland

Sunrise / Sunset in Portland

  • Sunrise/Sunset for October 23, 2017 [2]
    • Sunrise: 7:07 am
    • Sunset: 5:42 pm
    • Solar Noon: 12:25 pm
    • Length of Day: 10:34
Solar Energy Statistics for Portland

Best Months for Solar in Portland

  • Top Solar Power Months Historically [1]
    • Solar Radiation July (5.73 kWh/m2/day)
    • ATaL: August (5.6 kWh/m2/day)
    • DNI: July (5.14 kWh/m2/day)
    • GHI: July (5.93 kWh/m2/day)

* See glossary & definitions above.

Solar Panel Installs in Portland

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

However, Portland is in Cumberland County and Cumberland County has at least 196 solar insallations right now. [1]

Solar Power Output in Portland

The Power of Solar in Portland, ME

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

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

Solar Output Analysis for Portland, ME

Solar Radiation Data in Portland

Portland (ME) has a average annual solar AC output value of 5529.05 kilowatt hours (AC). [2]

The month with the highest historical solar power output in Portland is July with an average of 545.85 kWhac, followed by August at 535.2 kWhac and May at 531.73 kWhac. [2]

The three months that historically average the lowest average solar output levels in Portland (Maine) are November with an average of 312.19 kWhac, followed by December with an average of 312.2 kWhac and January at 387.87 kWhac. [2]

Cost of Utilities in Portland

Portland Electricity Costs

Electricity prices (residential) in Portland averaged 15.96 cents per kilowatthour (¢/kWh) in July 2017, which was about 22% more than the overall U.S. average residential electricity rate of 13.12¢/kWh in July. [3]

Solar Power Poll: Portland

Vote now: Given all of the data and analysis provided for Portland, 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

Portland Natural Gas Costs

Natural gas prices (residential) in Maine averaged $17.86 per thousand cubic feet (Mcf) in June 2017, which was approximately 1% more than the overall U.S. average residential natural gas rate of $17.75 per Mcf in June. [4]

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Solar Businesses in Portland

Solar Energy Contractors in Portland

Contractors & builders that specialize in solar panel installations in or near Portland, ME.

Sorry, no local solar energy contractors found.

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

Solar Energy Equipment in Portland

Businesses that sell solar energy equipment and/or solar parts in or near Portland, ME.

Sorry, no local business selling solar equipment were found.

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

Energy Conservation Consultants in Portland

Energy conservation specialists that offer consulting services in or near Portland, ME.

Sorry, no local energy conservation specialists were found.

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

Weather Forecast for Portland, ME [5]

Mon Oct 23
55°F
Sky Is Clear
Min: 55°F
Max: 56°F
Moderate breeze: 7 mps S
Precip.: n/a
Humidity: 95%
Cloud cover: 8%
Tue Oct 24
63°F
Moderate Rain
Min: 59°F
Max: 64°F
High wind, near gale: 14 mps SSE
Precip.: Chance of Rain
Humidity: 90%
Cloud cover: 88%
Wed Oct 25
62°F
Heavy Intensity Rain
Min: 57°F
Max: 62°F
Strong breeze: 13 mps S
Precip.: Chance of Rain
Humidity: 97%
Cloud cover: 92%
Thu Oct 26
56°F
Light Rain
Min: 51°F
Max: 56°F
Moderate breeze: 5 mps SW
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 82%
Fri Oct 27
57°F
Light Rain
Min: 48°F
Max: 57°F
Light breeze: 2 mps S
Precip.: Chance of Rain
Humidity: 0%
Cloud cover: 0%
Sat Oct 28
58°F
Light Rain
Min: 47°F
Max: 58°F
Gentle Breeze: 5 mps S
Precip.: n/a
Humidity: 0%
Cloud cover: 0%

More about Portland

About Portland

The city of Portland, ME in Cumberland County has an approximate population of 66,194. [6]

Portland Solar Power

Portland, ME Solar Energy

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

Did you know?

Various missions to space by different countries are known to utilize solar energy as a main power source.

Other Cities in Maine

References