“Jonah Greenberger envisions Mexico’s rooftops covered in cost-effective, environmentally friendly, dark blue solar panels. The 28-year-old founder of Y Combinator-backed solar power startup Bright left his job working in fossil fuels at Chevron to work on lowering exorbitant energy costs for the people of Mexico.

“The third world pays the most for electricity. Mexico has the most potential to be disrupted because it’s really sunny there,” he told me over the phone.

The electric system in Mexico is both expensive and complicated. The government subsidizes the poorest people, and the wealthier citizens end up paying the most. Fees can get up to over $4,000 USD in the hot month of August when not subsidized, according to the Mexican Federal Electric Commission.”