Notas del episodio
Recorded 12th July. This week we explore how extreme heat is reshaping electricity systems around the world, and why one of the biggest opportunities is improving how we use the infrastructure we already have.
We begin by examining the record-breaking heatwaves across Europe, where soaring temperatures have contributed to thousands of excess deaths while exposing how electricity grids, homes and energy markets were designed for a cooler climate. We discuss
- Why cooling demand is becoming just as important as winter heating,
- How heat affects both electricity demand and electricity generation,
- Why technologies such as heat pumps, demand response and dynamic grid management will become increasingly important.
We then turn to the United States, where PJM recorded all-time peak electricity demand during an East Coast heatwave. Despite having substantial backup generation, batteries and demand response capacity available, fragmented market rules and regulatory frameworks limited how effectively these resources could be used. We explore the forecasting errors, emergency reliability orders and operational challenges that forced grid operators to keep thermal power plants online and curtail large electricity users.
The conversation also examines the hidden environmental and public health consequences of relying on diesel backup generators during grid emergencies, and why better coordination of distributed energy resources could provide cleaner, lower-cost alternatives.
Finally, we look at two companies tackling one of the electricity sector's biggest challenges: unlocking more capacity from the grid we already have.
- GridSolver (WattCarbon & Resilience Energy) has launched an open-source platform that maps more than 66,000 US neighbourhoods to identify where batteries, flexible demand, EV charging and rooftop solar would provide the greatest value to the electricity grid.
- GridCARE, a Stanford spinout backed by a $64 million Series A, uses AI-powered digital models to identify hidden capacity across existing transmission and distribution networks, enabling faster grid connections without waiting years for new infrastructure.
In this episode
Extreme heat and electricity systems:
- Europe's record-breaking heatwaves and excess mortality
- Why cooling demand is becoming a major challenge for electricity grids
- How heat affects transmission lines, power plants and system reliability
- Why heat pumps can reduce both emissions and electricity costs
- Demand response and flexible electricity consumption during extreme weather
The US grid under stress:
- PJM's record electricity demand during the East Coast heatwave
- Emergency reliability orders and backup generation
- Why forecasting errors created operational challenges
- The regulatory barriers preventing greater use of flexible resources
- The environmental and health impacts of diesel backup generators
Getting more from the existing grid:
- How GridSolver identifies where distributed energy resources create the greatest value
- Why different neighbourhoods require different flexibility solutions
- How GridCARE uses AI to uncover unused grid capacity
- Why utilities are increasingly focused on improving grid utilisation before building new infrastructure
- How better coordination of existing assets could reduce electricity costs and accelerate new grid connections