China solar water heater,solar collectorManufacturer-Zhejiang Eammar Solar Energy Co.,Ltd.
Solar water heater is water heated by the use of solar energy. Its systems are generally composed of solar thermal collectors, a water storage tank and so on.
Solar collector is designed to collect heat by absorbing sunlight. It is applie...

Insolation Levels (Nth America)

Average Insolation (10 year average) kWh/m2/day

State City Latitude Longitude Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Avg
AL Birming han 33° 34' N 86° 45' W 2.29 3.31 4.04 5.14 5.92 5.98 5.81 5.7 4.8 3.93 2.96 2.25 4.34
AK Anchorage 61° 10' N 150° 1' W 0.21 0.76 1.68 3.12 3.98 4.58 4.25 3.16 1.98 0.98 0.37 0.12 2.09
AR little rock 32° 25' N 94° 44' W 2.36 3.39 4.01 5.32 5.71 6.19 6.15 5.85 5.25 4.17 2.95 2.25 4.46
AZ Phoenix 33 ° 26' N 112° 1' W 3.25 4.41 5.17 6.76 7.42 7.7 6.99 6.11 6.02 4.44 3.52 2.75 5.38
CA Los Angeles 34° N 118° W 3.09 4.25 5.09 6.58 7.29 7.62 7.45 6.72 6.11 4.42 3.43 2.72 5.40
CA San Francisco 38° 31' N 121° 30' W 2.35 3.33 4.42 5.95 6.84 7.39 7.55 6.51 5.75 3.92 2.65 2.06 4.89
CO Denver 39° 45' N 104° 52' W 2.25 3.2 4.32 5.61 6.11 6.71 6.5 5.86 5.47 4.01 2.59 1.98 4.55
CT Hartford 41° 44' N 72° 39' W 1.7 2.43 3.48 4.07 5.14 5.58 5.38 5.04 4.13 2.91 1.81 1.42 3.59
DE Dover 39° 8' N 75° 28' W 1.85 2.62 3.6 4.33 5.44 5.91 5.64 5.3 4.38 3.23 2.21 1.66 3.84
FL Miami 25° 48' N 80° 16' W 3.72 4.61 5.42 6.4 6.61 6.29 6.26 6.08 5.47 4.84 3.96 3.46 5.26
GA Atlanta 33° 39' N 84° 26' W 2.31 3.37 4.08 5.2 6.02 6.01 5.81 5.59 4.76 3.95 2.98 2.33 4.37
HI Honolulu 21° 20' N 157° 55' W 4.38 5.15 5.99 6.69 7.05 7.48 7.37 7.07 6.51 5.46 4.41 4.01 5.96
IA Dubuque 42° 24' N 90° 42' W 1.64 2.58 3.34 4.57 5.54 6.06 5.81 5.26 4.33 3.03 1.72 1.35 3.77
ID Boise 43° 34' N 116° 13' W 1.73 2.72 3.77 5.22 5.9 6.57 7.17 6.12 5.28 3.29 1.74 1.46 4.24
IN Indianapolis 39° 44' N 86° 17' W 1.67 2.59 3.28 4.67 5.46 6.11 5.79 5.37 4.76 3.33 1.97 1.46 3.87
IL Chicago 41° 53' N 87° 38' W 1.5 2.45 3.2 4.48 5.56 6.07 5.68 5.27 4.51 3.07 1.69 1.26 3.72
KS Kansas City 39° 12' N 94° 36' W 2.06 2.89 3.62 4.92 5.58 6.17 6.21 5.59 4.9 3.49 2.2 1.75 4.11
KY Louisville 38° 11' N 85° 44' W 1.71 2.65 3.32 4.73 5.38 6.08 5.79 5.35 4.8 3.42 2.1 1.56 3.9
LA New Orleans 29° 37' N 90° 5' W 2.64 3.73 4.67 5.8 6.6 6.15 6.09 5.7 5.13 4.48 3.49 2.68 4.76
MA Boston 42° 22' N 71° 2' W 1.66 2.5 3.51 4.13 5.11 5.47 5.44 5.05 4.12 2.84 1.74 1.4 3.58
MD Annapolis 38° 35' N 76° 21' W 1.96 2.8 3.71 4.55 5.54 6.03 5.77 5.34 4.48 3.4 2.37 1.81 3.98
ME Portland 45° 36' N 122° 36' W 1.38 2.33 3.49 4.57 5.46 6.09 6.64 5.78 4.8 2.79 1.41 1.1 3.82
MI Detroit 42° 25' N 83° 1' W 1.43 2.33 3.19 4.34 5.44 5.98 5.64 4.99 4.25 2.73 1.52 1.14 3.58
MO St.Louis 38° 45' N 90° 23' W 2.02 2.82 3.52 4.97 5.56 6.21 6.05 5.63 4.91 3.55 2.21 1.73 4.09
MN Minneapolis 44° 53' N 93° 13' W 1.6 2.61 3.3 4.55 5.44 5.86 5.77 5.12 4.12 2.9 1.62 1.34 3.68
MS Jackson 42° 16' N 84° 28' W 1.47 2.41 3.22 4.33 5.46 5.93 5.57 4.99 4.3 2.78 1.55 1.17 3.59
MT Billings 45° 48' N 108° 32' W 1.55 2.57 3.52 4.82 5.63 6.45 6.39 5.75 4.67 3.19 1.77 1.3 3.96
MT Great Falls 43° 33' N 96° 42' W 1.3 2.36 3.41 4.84 5.56 6.18 6.44 5.53 4.4 2.9 1.53 1.11 3.79
NC Charlotte 35° 13' N 80° 56' W 2.22 3.17 3.95 4.98 5.8 6.01 5.76 5.27 4.58 3.75 2.76 2.21 4.2
ND Fargo 46° 54' N 96° 48' W 1.44 2.39 3.36 4.79 5.62 5.82 5.94 5.14 4.01 2.83 1.59 1.31 3.68
NE Omaha 41° 18' N 95° 54' W 1.92 2.76 3.45 4.74 5.6 6.14 6.11 5.46 4.74 3.34 2 1.57 3.98
NH Manchester 42° 56' N 71° 26' W 1.66 2.5 3.51 4.13 5.11 5.47 5.44 5.05 4.12 2.84 1.74 1.4 3.58
NJ Trenton 40° 13' N 74° 46' W 1.71 2.39 3.43 4.04 5.26 5.67 5.39 5.14 4.18 3 1.98 1.48 3.63
NM Albuquerque 35° 3' N 106° 37' W 2.92 3.97 4.92 6.3 6.68 6.94 6.66 5.8 5.68 4.18 3.16 2.5 4.97
NV Las Vegas 36° 18' N 115° 16' W 3.02 4.13 5.05 6.57 7.25 7.69 7.37 6.42 6.08 4.26 3.18 2.6 5.3
NY New York 41° N 74° W 1.67 2.37 3.41 3.93 5.11 5.48 5.26 5.01 4.05 2.85 1.82 1.4 3.53
OH Columbus 39° 16' N 85° 54' W 1.64 2.57 3.26 4.63 5.4 6.08 5.73 5.29 4.74 3.29 1.96 1.45 3.83
OK Tulsa 36° 12' N 95° 54' W 2.33 3.22 3.9 5.25 5.58 6.32 6.4 5.8 5.08 3.8 2.62 2.06 4.36
OR Portland 45° 32' N 122° 40' W 1.38 2.33 3.49 4.57 5.46 6.09 6.64 5.78 4.8 2.79 1.41 1.1 3.82
PA Philadelphia 39° 53' N 75° 15' W 1.85 2.62 3.6 4.33 5.44 5.91 5.64 5.3 4.38 3.23 2.21 1.66 3.84
PA Pittsburgh 40° 27' N 79° 57' W 1.59 2.4 3.26 4.07 5.05 5.53 5.27 4.94 4.05 2.88 1.86 1.41 3.53
RI Providence 41° 44' N 71° 26' W 1.7 2.46 3.53 4.2 5.17 5.67 5.48 5.08 4.21 2.97 1.8 1.43 3.64
SC Columbia 38° 58' N 92° 22' W 2.14 2.91 3.62 5.03 5.56 6.22 6.13 5.64 4.95 3.57 2.25 1.82 4.15
SD Sioux Falls 45° 27' N 98° 25' W 1.72 2.71 3.31 4.65 5.61 6.1 6.04 5.42 4.47 3.2 1.78 1.43 3.87
TN Nashville 36° 7' N 86° 41' W 1.94 2.9 3.54 4.76 5.57 5.9 5.86 5.62 4.63 3.53 2.45 1.82 4.04
TX San Antonio 29° 32' N 98° 28' W 2.57 3.7 4.43 5.54 5.94 6.62 6.49 6.28 5.7 4.67 3.43 2.62 4.83
TX Houston 29° 59' N 95° 22' W 2.47 3.5 4.4 5.59 6.03 6.45 6.36 6.07 5.46 4.61 3.3 2.44 4.72
UT Salt Lake City 40° 46' N 111' 52' W 2.23 3.15 4.09 5.57 6.26 6.98 6.86 5.98 5.39 3.68 2.29 1.97 4.53
VA Washington 38° 51' N 77° 2' W 1.95 2.8 3.66 4.46 5.42 5.88 5.63 5.22 4.38 3.36 2.34 1.79 3.9
VT Montpelier 44° 16' N 72° 35' W 1.58 2.54 3.5 4.05 5 5.24 5.37 4.92 3.79 2.46 1.52 1.28 3.43
WA Seattle 47° 32' N 122° 18' W 1.14 2.04 3.23 4.26 5.19 5.75 6.27 5.46 4.43 2.5 1.21 0.9 3.53
WI Milwaukee 42° 57' N 87° 54' W 1.43 2.41 3.29 4.48 5.6 6.09 5.74 5.21 4.34 2.9 1.6 1.2 3.69
WV Charleston 38° 22' N 81° 36' W 1.75 2.64 3.34 4.26 5.2 5.67 5.49 5.19 4.26 3.19 2.15 1.62 3.73
WY Casper 42° 55' N 106° 28' W 1.93 2.8 3.79 5.13 5.9 6.68 6.5 5.9 5.13 3.59 2.06 1.65 4.25

Data courtesy of: NASA - Surface meteorology and Solar Energy Data Set
Reference:
Whitlock, C. E., et al., Release 3 NASA Surface Meteorology and
Solar Energy Data Set for Renewable Energy Industry Use.
Rise & Shine 2000, the 26th Annual Conference of the Solar
Energy Society of Canada Inc. and Solar, Oct. 21-24, 2000,
Halifax, Nova Scotia, Canada.

Please note: If your region is not listed please visit the NASA website where you can search for insolation value for any areas of the world. You will need to obtain a free username and password to gain access.

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