Pending parliamentary approval, the legislative revisions approved by Prime Minister Shinzo Abe’s cabinet will likely go into effect on 1 April 2017, the Ministry of Economy, Trade and Industry (METI) said today.

METI described the changes as “necessary,” adding that the reforms were partly precipitated by complaints by a number of regional utilities — most notably, Kyushu Electric Power — that the rapid development of solar projects posed a threat to grid stability.

The review of the nation’s feed-in tariff (FIT) system, which METI has been mulling for the past year, could dramatically reshape investment in Japanese renewables such as solar and wind.