States

Peak sun hours by state

State	Sun hours	kWh/yr per kW	Panels for 10 kWh/day
Arizona	6.54	1,755	2,039 W
New Mexico	6.42	1,779	2,077 W
Nevada	6.41	1,753	2,080 W
California	6.08	1,677	2,193 W
Hawaii	5.82	1,622	2,291 W
Colorado	5.66	1,595	2,356 W
Oklahoma	5.5	1,542	2,424 W
Florida	5.48	1,455	2,433 W
Kansas	5.39	1,526	2,474 W
Utah	5.39	1,484	2,474 W
Wyoming	5.36	1,533	2,488 W
South Carolina	5.33	1,454	2,502 W
Louisiana	5.32	1,479	2,506 W
Mississippi	5.26	1,414	2,535 W
North Carolina	5.25	1,416	2,540 W
Idaho	5.22	1,468	2,554 W
Texas	5.22	1,421	2,554 W
Alabama	5.21	1,367	2,559 W
Arkansas	5.18	1,373	2,574 W
Georgia	5.17	1,420	2,579 W
Missouri	5.03	1,433	2,651 W
Virginia	5.01	1,427	2,661 W
Nebraska	4.98	1,423	2,677 W
District of Columbia	4.9	1,391	2,721 W
Maryland	4.88	1,392	2,732 W
South Dakota	4.86	1,409	2,743 W
Tennessee	4.82	1,338	2,766 W
Delaware	4.8	1,364	2,778 W
Kentucky	4.79	1,343	2,784 W
Pennsylvania	4.79	1,356	2,784 W
Montana	4.76	1,344	2,801 W
Iowa	4.75	1,367	2,807 W
Massachusetts	4.7	1,302	2,837 W
Rhode Island	4.7	1,294	2,837 W
Indiana	4.66	1,332	2,861 W
New Jersey	4.66	1,305	2,861 W
Minnesota	4.61	1,333	2,892 W
New Hampshire	4.58	1,258	2,911 W
Wisconsin	4.58	1,334	2,911 W
West Virginia	4.57	1,219	2,918 W
Maine	4.55	1,319	2,930 W
Ohio	4.54	1,296	2,937 W
Connecticut	4.53	1,291	2,943 W
Illinois	4.51	1,308	2,956 W
New York	4.5	1,291	2,963 W
Michigan	4.47	1,291	2,983 W
North Dakota	4.45	1,294	2,996 W
Vermont	4.36	1,222	3,058 W
Oregon	4.06	1,121	3,284 W
Washington	3.95	1,088	3,376 W
Alaska	3.17	922	4,206 W