Liam Denning, Columnist

The Sun Won't Pay for Trump's Wall, Either

The math on covering the border with solar panels is no bueno.

June 23, 2017 at 11:00 AM UTC

Liam Denning is a Bloomberg Opinion columnist covering energy. A former banker, he edited the Wall Street Journal’s Heard on the Street column and wrote the Financial Times’s Lex column.

1498161044_GettyImages-632851970 — Photographer: Justin Sullivan

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President Donald Trump, having claimed that his border wall would be paid for by Mexico, has now set his sights further afield for financing. About 93 million miles further afield.

More accurately, the president told a campaign-rally crowd this week that covering the wall in solar panels would generate revenue to reduce the amount that Mexico would pay. "My idea" he said.