One of the greatest advancements in residential solar during the past decade is the increase in financing offerings. The first solar lease was introduced in 2007, and soon after, SolarCity (NASDAQ:SCTY) rode that to national dominance. Larger players, like SunPower (NASDAQ:SPWR), began offering leases, as well. 

But loans are emerging as a viable alternative, and a new offering from Mosaic and Enphase Energy (NASDAQ:ENPH), which includes operating and maintenance for owned systems, may make loans even more attractive. Plus, SunPower recently signed a $200 million solar-loan deal with Admirals Bank to increase its offerings. 

Find out more about where residential solar has been, and where it's going, in the following slideshow. 

The booming energy business
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Travis Hoium manages an account that owns shares of SunPower and personally is long shares and options of SunPower. The Motley Fool recommends and owns shares of SolarCity. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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