SACRAMENTO, Calif. – The governors of seven states have agreed to include more zero-emission vehicles in public fleets and make installing electric charging stations easier, the San Jose Mercury News reports. The agreement pledges to raise the number of zero-emission vehicles (ZEVS) on the roads to 3.3 million by 2025.

Governors from California, Connecticut, Maryland, Massachusetts, New York, Oregon, Rhode Island and Vermont signed the agreement. “This is not just an agreement, but a serious and profoundly important commitment,” said California Gov. Jerry Brown in a statement. “From coast to coast, we're charging ahead to get millions of the world's cleanest vehicles on our roads.”

The purpose of the agreement is to increase demand for such vehicles, which in turn would drive down the cost for consumers. “One of the biggest barriers for folks to buy ZEVS is price,” said Colin Santulli with the Center for Sustainable Energy. “The price is high because of the cost of the batteries. The mores states can commit to supporting the vehicles, the more we can help to drive the cost of batteries down.”

Currently, California has around 50,000 ZEVs on the roads. Within a dozen years, the state would like that number to grow to 1.5 million ZEVs. “The air quality improvements from zero-emission vehicle technologies will also benefit seniors, low income communities and communities of color, anyone who is suffering from heart or lung disease and other sensitive groups,” said Susan Griffin, a board member of the American Lung Association. “Every zero-emission vehicle on the road will help people breathe easier.”