But many celebs have not, even though they represent a select group who own a disproportionate number of outrageously excessive homes located in sunny places, and they may want to consider re-decorating their roofs with energy-generating silicon.

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If saving money and resources, or doing the right thing aren’t enough, every time a celebrity installs solar with BP Solar Neighbors program, a low-income home in South Los Angeles will receive a system as well. It also wouldn’t hurt for any of these people to spearhead their local solar panel collective bargaining clubs.

For your viewing pleasure (and our own personal enjoyment), we’ve rounded up the top ten heinously huge celebrity homes that probably should attempt to redeem themselves by installing solar panels. We’ve added DC nameplate rating quotes for each roof to show the wattage that would fit on the usable roof space, which was estimated by our resident solar expert and former solar installer. (An average home can fit about 4 kW, for your reference.)

Here they are, ranked from the smallest to largest potential system:

10. Ashlee Simpson, Beverly Hills, California, 2.5 kW

Pete Wentz said goodbye to his $1.8 million bachelor pad and hello to this $4.5 million home with Ashlee. They now live right around the corner from Demi and Ashton. Though this house isn’t ideal for solar, the installation could be just the distraction Ashlee needs right now.

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