Last week, Europe experienced its worst blackout in living memory, which plunged tens of millions of people across Spain and Portugal into darkness for up to 18 hours. Life screeched to a halt, with trains, traffic lights, ATMs, phone connections, and internet access failing. In the aftermath, many important questions have arisen, including: what caused such a widespread grid failure, and how can Europe and other nations prepare for the next time an event like this happens?

In today’s episode, Nate is joined by Pedro Prieto to discuss the recent blackout in the Iberian Peninsula, exploring its causes, impacts, and the role of renewable energy in the stability of the electric grid. Prieto highlights the societal and infrastructural challenges that his home country faced, emphasizing the need for a balanced approach to energy management, as well as the interconnectedness of energy systems and societal resilience. The discussion delves into the complexities of energy demand and supply, the importance of backup systems, and the future of renewable energy in Spain.

Are developed countries more vulnerable to blackouts than those that are still developing? How does renewable energy act as a double-edged sword, adding stability or fragility to energy infrastructure, depending on how it's used? How might developed countries learn lessons from this widespread blackout, including policy changes or reducing energy dependence in the face of future energy challenges?

(Conversation recorded on May 1st, 2025)

About Pedro Prieto:

Pedro is the vice president of the Asociación para el Estudio de los Recursos Energéticos (AEREN). AEREN is an open space for debate and communications on energy issues and their role in demography, development, economy and ecology. Pedro was a member of the board at ASPO International with AEREN representing ASPO in Spain. Since 2004, Pedro has led several solar photovoltaic projects in Spain, a leading world country in solar PV penetration. Pedro co-authored Spain's Photovoltaic Revolution. The Energy Return on Investment, that challenged the conventional energy boundaries considered up to the moment for calculations.

Show Notes and More

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The Blackout That Shook Spain: Exploring the Fragility of Modern Electric Grids with Pedro Prieto

The Great Simplification with Nate Hagens