The Scottish government said Thursday the amount of electricity generated through renewable energy during the first half of 2014 was up 30 percent year-on-year.

The British Department of Energy and Climate Change said Scotland's renewable energy footprint was expanding. The 30 percent increase from last year came as a result of a 50 percent increase in hydropower and a 20 percent increase in wind energy generation.

"Scottish renewable electricity made up 32 percent of the U.K.'s renewable energy generation in 2013 and we continue to be a net exporter of electricity," Scottish Energy Minister Fergus Ewing said in a statement. "Energy efficiency sits at the top of our energy hierarchy and the progress being made is welcome."

Scotland aims to generate enough energy from renewable resources to meet its total demand for electricity by 2020. Renewable energy met 46.4 percent of gross consumption last year.

The Scottish government said it could have supported itself with oil revenue while relying on renewable energy for power if a referendum for independence had passed.

"We look forward to proposals for more powers encompassing the necessary levers to deliver Scottish priorities," Ewing said.