The 4 projects are 1. Development of technologies to reduce power generation cost for high performance and high reliability solar power generation (to 14 yen/kWh by 2020 and 7 yen/kWh by 2025), 2. Heterojunction technology, 3. Back contact technology, and 4. Solar energy in net zero energy buildings .

NEDO news release, May 28, 2018