Cold Call The Challenges of Scaling a Technology for Social Good
Apr 14, 2026
Dr. Shannon Yee, an engineer from Georgia Tech who led development of the Single User Reinvented Toilet (SURT). Maria Roche, a Harvard Business School professor who studies innovation and scaling. They discuss SURT’s technical readiness, tradeoffs from funder constraints, pricing and public-health spillovers, market entry options like military or licensing, partner alignment, and behavioral and municipal barriers to scaling.
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Invention Alone Doesn’t Ensure Impact
- Inventing a working off-grid toilet is only the first step toward social impact.
- Maria Roche stresses adoption and ecosystem orchestration matter more than technical success for real-world impact.
Philanthropy Can Add Hidden Commercial Constraints
- Philanthropic funding can enable invention but imposes commercialization constraints.
- Maria Roche explains Gates Foundation rules (non-exclusive licensing and deployment in low-income countries) reduced commercial incentives to invest at scale.
Thermal Processes Replace Sewers
- SURT uses thermochemical and thermal processes to treat waste on-site without sewer infrastructure.
- Shannon summarizes that the system compresses miles of pipes and large digesters into a bathroom-sized solution.