Solar Radiation Data
Average BTU's Output Per Day

Please read the Collector Tube Efficiency and System Sizing charts before using these figures.

Sorted by City

Sorted by State

A
Anchorage, AK
Albany, NY
Albuquerque, NM
Amarillo, TX
Asheville, NC
Atlanta, GA
Atlantic City, NJ
Austin, TX

B
Bakersfield, CA
Baltimore, MD
Barrow, AK
Bettles, AK 
Billings, MT
Birmingham, AL
Bismarck, ND
Boise, ID
Boston, MA
Boulder, CO
Brownsville, TX
Buffalo, NY
Burlington, VT
Burns, OR

C
Caribou, ME
Casper,WY
Cedar City, UT
Charlotte, NC
Charleston, SC
Charleston, WV
Chicago, IL
Colorado Springs, CO
Columbia, SC
Columbus, OH
Concord, NH
Covington, KY
Cut Bank, MT

D
Daggett, CA
Dallas, TX
Dayton, OH
Denver, CO
Des Moines, IA
Detroit, MI
Dodge City, KS
Duluth, MN

E
Elkins, WV
Elpaso, TX
Erie, PA
Evansville, IN

F
Fairbanks, AK
Fargo, ND
Flagstaff, AZ
Fort Wayne, IN

G
Goodland, KS
Great Falls, MT
Green Bay, WI
Greenville, SC

H
Hartford, CT
Hilo, HI
Honolulu, HI
Houghton, MI
Houston, TX
Huron, SD

I
Indianapolis, IN
International Falls, MN

J
Jackson, MS

K
Kansas City, MO
Key West, FL
Knoxville, TN

L
Lander, WY
Las Vegas, NV
Little Rock, AR
Long Beach, CA
Los Angeles, CA
Louisville, KY
Lynchburg, VA

M
Madison, WI
Medford, OR
Memphis, TN
Miami, FL
Midland, TX
Miles City, MT
Minneapolis, MN
Mobile, AL

N
Nashville, TN
Newark, NJ
New Orleans, LA
New York City, NY
Norfolk, VA

O
Oakland, CA
Oklahoma City, OK
Omaha, NE

P
Pendleton, OR
Pierre, SD
Philadelphia, PA
Phoenix, AZ
Pittsburgh, PA
Pueblo, CO
Portland, OR
Portland, ME
Prescott, AZ
Providence, RI

R
Rapid City, SD
Redmond, OR
Reno, NV
Richmond, VA
Roanoke, VA
Rochester, MN
Rochester, NY

S
Saint Cloud, MN
Salt Lake City, UT
San Antonio, TX
San Diego, CA
San Juan, PR
Savannah, GA
Seattle, WA
Shreveport, LA
Spokane, WA
St. Louis, MO

Syracuse, NY

T
Tucson, AZ
Tallahassee, FL
Tampa, FL

W
Washington, DC
Wilmington, DE

Y
Yakima, WA

Alaska
Anchorage
Barrow
Bettles
Fairbanks

Alabama
Birmingham
Mobile

Arkansas
Little Rock

Arizona
Flagstaff
Phoenix
Prescott
Tucson

California
Bakersfield
Daggett
Long Beach

Los Angeles
Oakland
San Diego

Colorado
Boulder
Colorado Springs
Denver

Pueblo

Connecticut
Hartford

Delaware
Wilmington

Georgia
Atlanta
Savannah

Hawaii
Honolulu
Hilo

Iowa
Des Moines

Idaho
Boise

Illinois
Chicago

Indiana
Indianapolis
Evansville
Fort Wayne

Florida
Key West
Miami
Tallahassee
Tampa

Kansas
Dodge City
Goodland

Kentucky
Covington
Louisville

Louisiana
New Orleans
Shreveport

Maryland
Baltimore

Massachusetts
Boston

Maine
Caribou
Portland

Michigan
Detroit
Houghton

Minnesota
Duluth
International Falls
Minneapolis
Rochester
Saint Cloud

Mississippi
Jackson

Missouri
Kansas City
St. Louis

Montana
Billings
Cut Bank
Great Falls
Miles City

Nebraska
Omaha

Nevada
Las Vegas
Reno

New Jersey
Atlantic City
Newark

New Hampshire
Concord

New Mexico
Albuquerque

New York
Albany
Buffalo
New York City

Rochester
Syracuse

North Carolina
Asheville
Charlotte

North Dakota
Bismarck
Fargo

Ohio
Columbus
Dayton

Oklahoma
Oklahoma City

Oregon
Burns
Pendleton
Portland
Medford

Redmond

Pennsylvania
Erie
Philadelphia
Pittsburgh

Puerto Rico
San Juan

Rhode Island
Providence

South Carolina
Charleston
Columbia

Greenville

South Dakota
Huron
Pierre

Rapid City

Tennessee
Knoxville
Memphis
Nashville

Texas
Amarillo
Austin
Brownsville

Dallas
Elpaso
Houston

Midland
San Antonio

Utah
Cedar City
Salt Lake City

Virginia
Lynchburg
Norfolk
Richmond
Roanoke

Vermont
Burlington

Washington
Seattle
Spokane
Yakima

Wisconsin
Green Bay
Madison

Wyoming
Casper
Lander

West Virginia
Charleston
Elkins

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Thermo Technologies

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