The Japan Climate Leaders Partnership, a collective of businesses focused on adopting renewable energy, says the goal should go even further, aiming for up to around 50% of the energy mix.

https://asia.nikkei.com/Spotlight/Environment/Climate-Change/Japan-embarks-on-hard-path-to-zero-net-carbon-emissions-by-2050?utm_content=article+link&del_type=4&pub_date=20210401090000&seq_num=6&si=84655