29. District of Columbia
> Annual avg. daily sunlight: 2,495 J/m2
> 10-yr. change in avg. daily sunlight: +7.5% (18th largest)
> Avg. daily sunlight compared to sunniest state: 33.1% less
28. Maryland
> Annual avg. daily sunlight: 2,499 J/m2
> 10-yr. change in avg. daily sunlight: +7.1% (21st largest)
> Avg. daily sunlight compared to sunniest state: 33% less
27. Delaware
> Annual avg. daily sunlight: 2,505 J/m2
> 10-yr. change in avg. daily sunlight: +7.7% (16th largest)
> Avg. daily sunlight compared to sunniest state: 32.8% less
26. Illinois
> Annual avg. daily sunlight: 2,506 J/m2
> 10-yr. change in avg. daily sunlight: +9.1% (9th largest)
> Avg. daily sunlight compared to sunniest state: 32.8% less
25. West Virginia
> Annual avg. daily sunlight: 2,527 J/m2
> 10-yr. change in avg. daily sunlight: +10.3% (8th largest)
> Avg. daily sunlight compared to sunniest state: 32.2% less
