Greg Fischer is a member of the Climate & Sustainability and Social Impact practices at Boston Consulting Group, working closely with the Principal Investors & Private Equity (PIPE) and Corporate Finance & Strategy (CFS) teams. He specializes in sustainable investment strategies for private equity, asset, and wealth managers, working investors, corporates, and the public sector to build and integrate sustainable investment and management practices that generate value. He also co-leads the firm's impact investing and blended finance activities globally.

Greg is committed to the idea that all companies can target social and environmental impacts and sustainability with the same rigor they use to pursue and maximize financial returns. In his work at BCG, Greg draws on ten years of investment experience and nearly two decades of research into building and using evidence for better decision making and impact. He works with clients on change management for integrating commercial and sustainability operations; impact quantification and monetization; ESG data collection, management, and reporting; and impact and sustainability diligence.

Prior to joining BCG, Greg was the Chief Economist at Y Analytics, which runs the environmental and social impact services for TPG's Rise Fund as well as the ESG analysis for TPG's full portfolio. He also co-founded a SaaS-based, sustainability and impact data-collection, management, and reporting company.

Outside of BCG, Greg is a Professor of Practice in the Department of Finance and Fellow in the School of Public Policy at the London School of Economics, where he currently teaches a course on sustainable finance and impact investing. He has worked with many private companies, international development organizations, and NGOs to conduct and build their capacity for large-scale impact evaluations and has taught data science at the graduate and post-graduate level. He currently sits on the advisory board of the Impact-Weighted Accounts Initiative and the Evaluation Steering Group for FCDO-CDC (a non-decision-making advisory body). 


  • PhD, economics, Presidential and National Science Foundation Fellowship recipient, Massachusetts Institute of Technology 
  • BA, economics, summa cum laude, Princeton.