The speaker in this video, Jesse Jenkins, discusses the complexity of deep decarbonization of power. As renewables are deployed in larger quantity they begin to lose value. In turn, firm power sources gain value. The speaker discusses sources of low carbon firm power sources: nuclear, fossil with carbon capture, biomass, geothermal, and engineered geothermal using hydraulic fracking technology. He also discusses a high renewable grid that deploys seasonal storage in the form of pumped hydro, the