Bill McCullen
Founder & CEO

REsurety provides software, advisory services, and a marketplace that help clean‑energy buyers, sellers, and investors model, price, and hedge renewable energy contracts such as PPAs and VPPAs. Its platform combines real‑time market data, weather‑driven generation forecasts, and risk analytics to assess asset values, curtailment exposure, and portfolio performance, while the CleanTrade marketplace enables scalable procurement and trading of clean‑energy deals.
Funding not disclosed


Founder & CEO
Co‑Founder
Co‑Founder & CTO
Clean energy market participants often struggle to quantify and manage financial, operational, and sustainability risks associated with power purchase agreements (PPAs), virtual PPAs, and other renewable energy contracts, leading to uncertainty in portfolio performance and investment decisions.
REsurety offers a suite of software tools, advisory services, and a transaction marketplace that enable buyers, sellers, and investors to model, price, and hedge renewable energy deals with greater precision. Its platform integrates real-time market data, weather-driven generation forecasts, and risk analytics to transform static term sheets into dynamic, data‑backed contracts. Users can assess asset values, evaluate curtailment exposure, and optimize portfolio composition across multiple jurisdictions. The CleanTrade marketplace facilitates scalable procurement and trading of clean energy, while specialist risk‑management teams provide hedge origination and contract audit services. By delivering transparent, actionable insights, REsurety helps stakeholders meet both financial returns and sustainability targets.
Primary customers are corporate clean‑energy buyers, renewable project developers/sellers, and institutional investors seeking to manage risk and optimize the financial performance of their renewable energy portfolios.