Managing 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


Integrated Resource Plan Support | El Paso Electric, 2020-21

E3 provided a broad range of IRP support services for El Paso Electric (EPE) including developing resource options and data inputs, conducting a Planning Reserve Margin and ELCC study using RECAP, optimizing EPE’s portfolios over the 2021-2045 period reflecting New Mexico’s Renewables Portfolio Standard and Energy Transition Act as well as EPE’s own goal of 80% carbon reductions by 2035, studying the operability of EPE’s system under high levels of wind and solar generation, and developing regulatory strategies for cost allocation and procurement given EPE’s multi-state service area. E3 has also been heavily involved in EPE’s stakeholder outreach and communication strategy, leading multiple stakeholder workshops and contributing to a substantial improvement in EPE’s stakeholder relations.

Read the detailed project description.