Japan’s government isn’t doing enough to make sure the country meets its climate targets, according to the chief of a top renewable energy firm.

While setting long-term targets such as being carbon-neutral by 2050 is a positive, there’s still a lack of clear policies on how to reach that goal, said Kazuhiro Takeuchi, chief executive officer of Japan Renewable Energy Co. (JRE). The government should ease permitting processes and help clean energy firms gain access to land, he said.

Takeuchi’s frustrations highlight an ongoing struggle in Japan as the country aims to fulfill ambitious climate change goals while maintaining a secure and stable energy system. A top government official recently blasted the trade ministry for not doubling down on renewable energy, even as the agency has been urging companies to continue investing in fossil fuels.