Senior Consultant
Patrick O’Neill

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Patrick O’Neill

Patrick O’Neill joined E3 in 2019. He works primarily in E3’s resource planning practice area, where he helps utilities, regulatory agencies, public power entities and other clients transition the bulk power grid to a high renewables future.

Patrick came to E3 from the Irish transmission system operator EirGrid, where he gained hands-on experience operating a grid with very high levels of renewable energy. In that role, he conducted load flow analysis and constraint studies while training to become a control center engineer. Previously, he developed resource plans for microgrids at NRG Energy and conducted lab research on lithium-ion batteries and tidal energy.

A firm believer in energy storage, Patrick created a storage valuation framework for utilities while a graduate student. As a consultant, he is eager to help clients address the many challenges of transitioning to a low-carbon future. He is particularly interested in power market design, grid flexibility, and renewable energy policy.

Patrick is a Swiss American raised in France. An ardent dog lover, he enjoys boxing and baking sourdough breads ­– especially jalapeño sourdoughs.

Education: MS, civil and environmental engineering (atmosphere/energy), Stanford University; BS, mechanical engineering, Brown University