The United States is on track to hit a big number in renewable energy: More than 1 million American homes should have solar panels by February 2016.
While solar still makes up a tiny part of the sliver of renewables that power the US, it has increased exponentially in the past decade. And the solar industry is poised to keep growing in the decades to come.
In 2006, only about 30,000 homes had solar panels. Back then, it cost $9 per watt of power generated by solar panels. Today, it’s just $3.79 per watt.