The United States is on the brink of its most consequential transformation since the New Deal. Read more about what it takes to decarbonize the economy, and what stands in the way, here.

The transition to clean power will require massive solar expansion—not just home rooftop arrays but photovoltaic installations near population centers. Where to mount all the panels? One answer seems obvious: over parking lots, which also bake during the summer, contributing to dangerous “heat island” effects. Shading Walmart Supercenter lots with PV canopies, for instance, would generate loads of power and allow stores to entice shoppers with free EV charging and cooler lots. And a cool customer is a happy customer.

Number of US Walmart Supercenters: 3,572
Air temperature of a Supercenter lot on a 100-degree day: 120°F
Air temperature drop when a 100-space parking lot is partially shaded: –10°F

 

Number of households all US Supercenter lots could power if solarized: 1.25 million
Number of EV charging stations a solar-equipped, 1,000-space Supercenter lot would support: 100
Number of nearby homes that lot could power: 350

Sources: Walmart, Joshua Pearce, Vivek Shandas, Mikhail Chester, Energy Information Administration

DONALD TRUMP & DEMOCRACY

Mother Jones was founded to do things differently in the aftermath of a political crisis: Watergate. We stand for justice and democracy. We reject false equivalence. We go after, and go deep on, stories others don’t. And we’re a nonprofit newsroom because we knew corporations and billionaires would never fund the journalism we do. Our reporting makes a difference in policies and people’s lives changed.

And we need your support like never before to vigorously fight back against the existential threats American democracy and journalism face. We’re running behind our online fundraising targets and urgently need all hands on deck right now. We can’t afford to come up short—we have no cushion; we leave it all on the field.

Please help with a donation today if you can—even just a few bucks helps. Not ready to donate but interested in our work? Sign up for our Daily newsletter to stay well-informed—and see what makes our people-powered, not profit-driven, journalism special.

payment methods

DONALD TRUMP & DEMOCRACY

Mother Jones was founded to do things differently in the aftermath of a political crisis: Watergate. We stand for justice and democracy. We reject false equivalence. We go after, and go deep on, stories others don’t. And we’re a nonprofit newsroom because we knew corporations and billionaires would never fund the journalism we do. Our reporting makes a difference in policies and people’s lives changed.

And we need your support like never before to vigorously fight back against the existential threats American democracy and journalism face. We’re running behind our online fundraising targets and urgently need all hands on deck right now. We can’t afford to come up short—we have no cushion; we leave it all on the field.

Please help with a donation today if you can—even just a few bucks helps. Not ready to donate but interested in our work? Sign up for our Daily newsletter to stay well-informed—and see what makes our people-powered, not profit-driven, journalism special.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate