GM is increasing production of the electric Bolt later this year to meet global demand, said CEO Mary Barra on Wednesday.

The comments came in a speech to energy industry leaders, but Barra declined to give exact numbers as to how many more Bolts the company would make.

Built on the same line as the Chevrolet Sonic, in Lake Orion, Michigan, the plant only runs one shift a day, so it would be a relatively simple process of adding a shift to increase production.

Part of that growth may be required by a new fleet Bolt that was recently discovered through NHTSA filings.

Barra also called for an extension of the full $7,500 federal tax credit for EV buyers. The credit is only available on cars whose manufacturers have sold fewer than 200,000 electric or electrified vehicles.

Between the Bolt and the Volt, GM believes it will reach that number later this year, giving it an effective disadvantage in the market, since Tesla will be the only other automaker to have reached that number.

"While there's no doubt that the federal incentive has proved invaluable to attracting buyers to EVs, we're offering compelling products and prices for our customers," Elizabeth Winter, GM spokesperson, told CNN in February.

And although the Bolt is now available nationwide, Barra also suggested that GM and the energy industry had to partner to make a nationwide charging infrastructure to make EVs more attractive.