It's a striking paradox. In 2016, Chile generated so much solar energy that the country literally gave it away for free.
That year, 29 solar power farms opened across the nation. They performed beyond expectations, producing more energy than the grid could handle.
As a result, residents in northern Chile, particularly around the sun-drenched Atacama Desert, received kilowatts of peak solar power at no cost.
While not nationwide, this windfall primarily benefited northern communities where production far outpaced demand.
This wasn't a one-off. The year before, locals enjoyed 192 days of free power. In early 2016, from January to April, residents paid nothing for electricity—113 days in total.
Officials anticipated billing resuming in May, but surplus production persisted. Chile has since quadrupled its solar capacity through major investments in renewables, with 15 more farms slated to open soon amid robust economic growth.
This surplus stems less from sheer overproduction and more from inadequate infrastructure. Northern solar farms can't efficiently transmit power to demand-heavy central regions.
The government has committed to building 3,000 km of new transmission lines to connect these areas. Until then, excess energy remains stranded in the north.
What delights consumers challenges investors. Plummeting energy prices deter banks from financing solar projects, threatening the viability of farms unable to sell their output.
Chile is exploring solutions like a solar- and wind-powered metro line or large-scale battery storage. One thing is clear: the country has proven solar can meet national needs in abundance.
