The month of July has the highest historical solar radition values in Grand Coulee with an average of 7.31 kWh/m2/day. [More]
Solar Panels in Grand Coulee
Solar panels in Grand Coulee that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output. [More]
Sunrise & Sunset in Grand Coulee
The total length of the day in Grand Coulee, WA today (December 22, 2024) will be 8 hours and 27 minutes. [More]
Solar Power in Grand Coulee, WA
Solar Energy Data in Grand Coulee, WA
See the chart below to see how different types of solar panel installations compare in Grand Coulee.
Based on historical Grand Coulee, WA data, solar panels that are tilted towards the equator at an angle equal to the latitude will produce the maximum solar energy output in Grand Coulee.[1]
Grand Coulee has an average monthly Global Horizontal Irradiance (GHI) of 4.03 kilowatt hours per square meter per day (kWh/m2/day), which is approximately 17% less than the average monthly Direct Normal Irradiance (DNI) of 4.84 kWh/m2/day. [1]
Solar installations in Grand Coulee that are always titled at the latitude of Grand Coulee (Average Tilt at Latitude or ATaL) average 4.85 kWh/m2/day, or about 20% greater than the average monthly GHI of 4.03 kWh/m2/day and approximately 0% greater than the average monthly DNI of 4.84 kWh/m2/day. [1]
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 Grand Coulee
Solar Radiation Data in Grand Coulee, WA
See the chart below for monthly solar radiation levels in Grand Coulee.
* Amounts listed in kWh/m2/day (kilowatt hours per square meter per day)
Solar Radiation Analysis for Grand Coulee, WA
Grand Coulee, WA has a average annual solar radiation value of 4.94 kilowatt hours per square meter per day (kWh/m2/day). [1]
The month with the highest historical solar radition values in Grand Coulee is July with an average of 7.31 kWh/m2/day, followed by August at 7.28 kWh/m2/day and June at 6.74 kWh/m2/day. [1]
The three months that historically average the lowest average solar radiation levels in Grand Coulee (Washington) are January with an average of 1.91 kWh/m2/day, followed by December with an average of 2.02 kWh/m2/day and November at 2.59 kWh/m2/day. [1]
Solar Power Comparison: Grand Coulee vs. the U.S.
Solar Power Levels in Grand Coulee
The average monthly solar radiation level in Grand Coulee, WA, of 4.94 kilowatt hours per square meter per day (kWh/m2/day) is approximately 26% greater than the average level of 3.93 kWh/m2/day in a city with historically low levels (WA) and is approximately 25% less than the average level of 6.61 kWh/m2/day in a city with historically high levels (NV). [1]
→ Values listed as 0 (zero) are not available (N/A).
Solar Power: Grand Coulee vs. the U.S.
Below is a month-by-month comparison of how average Grand Coulee 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).
We do not currently have data on solar panel installations in the city of Grand Coulee, WA at this current time.
Solar Power Output in Grand Coulee
The Power of Solar in Grand Coulee, WA
Monthly AC solar system output averages for Grand Coulee (wa). Month-by-month solar power, as ranked by AC output, in Grand Coulee. [2]
* Amounts listed in kWhac (kilowatt hours (AC))
Solar Output Analysis for Grand Coulee, WA
Grand Coulee (WA) has a average annual solar AC output value of 5547.74 kilowatt hours (AC). [2]
The month with the highest historical solar power output in Grand Coulee is July with an average of 669.69 kWhac, followed by August at 660.66 kWhac and May at 613.52 kWhac. [2]
The three months that historically average the lowest average solar output levels in Grand Coulee (Washington) are January with an average of 197.53 kWhac, followed by December with an average of 207.02 kWhac and November at 252.2 kWhac. [2]
Cost of Utilities in Grand Coulee
Grand Coulee Electricity Costs
Sorry, Grand Coulee residential electricity prices are currently unavailable.
Please check back later.
Solar Power Poll: Grand Coulee
Vote now: Given all of the data and analysis provided for Grand Coulee, is solar power a good choice for residents of this city?
Grand Coulee Natural Gas Costs
Sorry, Washington residential natural gas prices are currently unavailable.
Light breeze: 7 mps ENE
Precip.: Chance of Rain
Humidity: 85%
Cloud cover: 100%
Mon Dec 23
39°F
Light Rain
Min: 37°F
Max: 41°F
Gentle Breeze: 8 mps NE
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 99%
Tue Dec 24
35°F
Rain And Snow
Min: 34°F
Max: 37°F
Gentle Breeze: 8 mps NE
Precip.: Chance of Rain
Humidity: 99%
Cloud cover: 100%
Wed Dec 25
34°F
Snow
Min: 30°F
Max: 36°F
Gentle Breeze: 8 mps ESE
Precip.: Chance of Snow
Humidity: 86%
Cloud cover: 71%
Thu Dec 26
34°F
Snow
Min: 33°F
Max: 35°F
Gentle Breeze: 10 mps ESE
Precip.: Chance of Snow
Humidity: 99%
Cloud cover: 100%
Fri Dec 27
34°F
Snow
Min: 33°F
Max: 34°F
Light breeze: 7 mps E
Precip.: Chance of Snow
Humidity: 100%
Cloud cover: 100%
More about Grand Coulee
About Grand Coulee
The city of Grand Coulee, WA in Grant County has an approximate population of 988. [6]
Grand Coulee, WA Solar Energy
To learn more about solar energy and solar power Grand Coulee, WA, or for more solar-related resources for Grand Coulee, 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.
