Even though not enough universities offer resources on Sustainable Finance, we managed to gather the ones and how you can find them underneath this title.
Hult International Business School - Joanne Lawrence
Harvard Library Resources:
Ask a Librarian Service
Harvard Library System (HOLLIS)
Business Research for Extension Students: Harvard library page for help with library resources, company & industry data, and more
Baker Business Library has many Research Guides
Baker Library Sustainability Resources: Sustainability Resources for HBS MBAs
Baker Library Sustainability Research Guide: Long list of available resources (finance and sustainability)