Cindy Taff

Cindy Taff, CEO of Sage Geosystems and former oil & gas well engineer, explains gravity‑fracture geothermal and underground long‑duration energy storage. She describes pumping pressure deep underground to act like inverted pumped hydro. The discussion covers rapid build of a first commercial facility, a rural cooperative partnership in Texas, and scaling via industry ties like Ormat.

Cindy Taff, a seasoned executive with 35 years in the oil industry, now leads Sage Geosystems, pioneering geothermal energy. She discusses the potential of geothermal resources beneath our feet and how fossil fuel techniques can aid clean energy. Cindy dives into challenges like deep drilling and regulatory hurdles while sharing insights on using geothermal wells for energy storage. Her journey from Shell’s VP of Unconventional Drilling to geothermal advocate highlights an innovative shift crucial for a sustainable future.

Cindy Taff, CEO of Sage Geosystems and a 35‑year oil and gas veteran now turning subsurface know‑how to next‑gen geothermal and underground energy storage. She explains engineered hot‑rock reservoirs, how pressured fractures can act like underground pumped hydro, and why this approach enables fast, long‑duration, chemistry‑free storage that could scale widely.

Cindy Taff, CEO of Sage Geosystems, is pioneering geothermal technologies that could transform energy storage. She discusses her shift from oil and gas to focusing on gravity fracking and pressure geothermal. The conversation covers the promising partnership with San Miguel Electric Cooperative, facilitating a swift 13-month build of a commercial facility. Cindy elaborates on the innovative process of deep drilling and reservoir pressure to enhance energy density, highlighting the potential for a major shift to clean, long-term energy storage.

Cindy Taff, CEO of Sage Geosystems and former Shell executive with 35 years in oil and gas, talks about applying drilling and subsurface know‑how to next‑gen geothermal. They discuss engineered hot‑rock reservoirs, an underground pressure‑based storage called EarthStore, fast, long‑duration dispatch, and why big tech and defense are already interested.