February 19, 2026

Episode 19: Paul Domjan (ENODA): Resolving the Energy Trilemma

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Paul Domjan, Founder and Chief Policy and Global Affairs Officer at ENODA, discusses grid infrastructure modernisation and the energy trilemma on Episode 19 of Scaling Green Tech, a podcast by Adopter.

Domjan argues that the electricity grid designed by Nikola Tesla, George Westinghouse, and William Stanley 138 years ago was built for one-directional power flow from large centralised generators to passive consumers - a model fundamentally incompatible with distributed renewable energy that flows in both directions. He traces how this infrastructure gap manifests as renewable curtailment, harmonic distortion, and voltage instability, particularly at the distribution level where the grid meets homes and businesses. In Poland, more than 90% of renewable curtailment results from system balancing limitations rather than grid capacity constraints. ENODA's response is the Prime Exchanger, a device that replaces the distribution transformer serving 60 to 120 homes with digitally controlled infrastructure capable of managing voltage, correcting harmonics, and enabling reverse power flow in real time.

This episode is relevant for energy technology founders, grid infrastructure innovators and policymakers looking for the inside scoop on what the energy transition looks like today and in the future.

Guest Profile

Paul Domjan is the Founder and Chief Policy and Global Affairs Officer at ENODA.

Paul began his career in oil and gas at Shell, working on pipeline infrastructure, before being recruited as the NATO commander's first energy security advisor in 2004 to develop NATO's first energy security strategy. His work at NATO covered the former Soviet Union, Europe, and Africa, and led him to the conclusion that a renewables-based energy system is the only route to both physical and economic energy security. He met his technical co-founder, Andrew Scobie, in 2019, and together with co-founders Jennifer Urquhart and Jacqui Porch, founded ENODA in 2021.

ENODA is an energy technology company developing digitally controlled grid infrastructure, headquartered in Edinburgh with offices in London, Madrid, and Krakow, and expanding into the United States. The company employs approximately 150 people. Its core product, the Prime Exchanger, replaces distribution transformers with devices that actively manage voltage, correct harmonic distortion, and enable reverse power flow from distributed energy sources. ENODA has deployed Prime Exchangers in several European countries, including a pilot project announced in Spain at the end of 2025.

ENODA website

Paul Domjan LinkedIn profile  

Key Takeaways

  • More than 90% of renewable curtailment in Poland is caused by system balancing limitations rather than grid capacity constraints, based on published Polish data cited by ENODA founder Paul Domjan.
  • On a high-renewable-energy day, approximately 8% of generated power is lost as harmonic distortion and noise - fixing this would represent a larger contribution to primary power than the UK's Hinkley Point C nuclear power station.
  • ENODA's Prime Exchanger replaces the distribution transformer with a digitally controlled device that transforms voltage, actively manages network conditions, corrects harmonics, and enables reverse power flow from rooftop solar and battery storage.
  • Voltage on the UK electricity network is permitted to vary plus and minus 10%, meaning a kettle's boiling time already fluctuates by approximately 20% depending on system conditions. ENODA uses this variation intentionally to provide flexibility across the network.
  • Less than half of the technologies required to execute the energy transition are currently commercially available, according to McKinsey research cited by Domjan.
  • AI data centre interconnection requests in Poland exceed four times the country's current total system capacity, illustrating the scale of new energy demand from AI compute.
  • Approximately 6.5% of US homes own a generator, and roughly 10% have some form of backup power, indicating a direct consumer-level reliability problem that grid modernisation could address.

FAQs

  1. What is the energy trilemma?

The energy trilemma refers to the challenge of simultaneously achieving energy security, energy affordability, and environmental sustainability. These three goals often conflict: shifting to renewables can increase costs or reduce reliability if grid infrastructure is not upgraded to handle intermittent and distributed generation. According to ENODA founder Paul Domjan, resolving the trilemma through infrastructure modernisation would transform it from a forced trade-off into a societal choice about which priorities to weight most heavily.

  1. What is a distribution transformer?

A distribution transformer is the electrical infrastructure unit that steps down voltage from the medium-voltage distribution network to the low voltage used by homes and businesses. Each unit typically serves 60 to 120 homes. The basic design has not fundamentally changed since the 1880s, which creates challenges as these endpoints now need to handle two-way power flow from solar panels and battery storage rather than simply delivering electricity in one direction.

  1. What causes renewable energy curtailment?

Renewable energy curtailment occurs when generated power cannot be used or transmitted and must be discarded. While grid transmission constraints (such as north-south bottlenecks) are one cause, ENODA founder Paul Domjan cites Polish data showing that more than 90% of curtailment results from the inability to balance supply and demand in real time. This balancing problem stems from replacing flexible thermal generators with intermittent renewables without deploying equivalent flexibility elsewhere in the system.

  1. How much energy do AI data centres require?

AI compute is driving energy demand at a scale that exceeds existing grid capacity in several markets. In Poland, data centre interconnection requests amount to more than four times the country's current total generation capacity. A single ChatGPT query uses approximately 10 times more energy than a traditional Google search. Much of this additional compute is asynchronous, meaning it could be scheduled to match renewable energy availability if grid infrastructure supports that flexibility.

  1. Why does grid modernisation matter for energy security?

The energy transition trades reliance on imported fossil fuels for reliance on the domestic electricity grid. This shifts security risks from geopolitical supply disruption to grid stability and cyber vulnerability. Domjan argues that countries need to invest in grid resilience, flexibility, and real-time monitoring to manage this shift, pointing to grid incidents in Spain, Berlin, and Texas as examples of what happens when domestic electricity infrastructure fails.

Topics Covered

  • Explaining grid technology to non-technical audiences.
  • The Tesla-Westinghouse AC system and why it cannot support modern renewables.
  • Distribution transformers as the grid's critical bottleneck.
  • Renewable curtailment and system balancing in Poland and the UK.
  • Harmonic distortion and power quality on high-renewable days.
  • ENODA's Prime Exchanger and its role in grid modernisation.
  • Flexibility versus efficiency in future energy systems.
  • The energy trilemma and resolving trade-offs between security, affordability, and sustainability.
  • Technology-agnostic policy and functional specification of energy problems.
  • AI data centre energy demand and the electron gap between the US and China.
  • Energy security in a post-fossil-fuel grid, including the 2019 Berlin blackout.
  • ENODA's plans for the US market and European commercial deployment in 2026.

Related Content

Episode 13: Juliette Devillard (Climate Connection) - Connecting the Climate Tech Community

Episode 6: Beth Holloway and Leo Thomson (feasibly) - Using AI to Accelerate Decentralised Energy

About Scaling Green-Tech

Scaling Green-Tech by Adopter is a podcast for people shaping the future of climate technology - founders, investors, and ecosystem leaders at the forefront of adaptation and resilience solutions. As part of Adopter’s mission to accelerate the adoption of high-impact climate innovation, the podcast aims to amplify real voices and practical insights that can help others navigate the startup journey. These conversations go beyond the hype to bring real, unfiltered stories - the wins, the roadblocks and everything you need to know in between.

Read the full transcript here
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