All electricity in Austria's largest state now produced from renewables

Hydroelectric power, wind energy, biomass and solar provide 100% of electricity for 1.65 million people

Austria's largest state said Thursday that 100 percent of its electricity is now generated using renewable sources of energy.

"We have invested heavily to boost energy efficiency and to expand renewables," said Erwin Proell, premier of 1.65m-strong Lower Austria.