The insurance firm is set to begin by contributing to a TPG-run fund before moving on to its own investments in three years time.
Japan-based insurance firm Nippon Life plans to invest a total of ¥30bn ($280m) in companies and funds that are addressing social and environmental issues, Nikkei reported on Monday.
Sectors under consideration for the funding include food, healthcare and technologies intended to mitigate climate change.
The firm will begin next month with a commitment of roughly $19m to an impact investment fund run by private equity group TPG that is concentrating on deals for medical technology developers. It intends to begin making impact investments directly by 2023 and plans to provide more than $90m per year.
Nippon Life already operates a venture capital subsidiary, Nissay Capital. Its investments have included Raksul, a printing services provider with a market cap of about $850m, and household services marketplace Minma, which raised more than $36m in January this year.