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About us

Small by design. Deep in energy.

Oak Hall Consulting Ltd was founded in 2016 and is based in Dublin. Together with our associates and freelance consultants, we deliver unique solutions with tailored insight — for electricity and gas clients near and far.

Dublin 9Ireland & NIUKEuropeSouth AfricaAustralia
The Oak Hall team working with a client in a Dublin office
Jessica Gregory, Founder and CEO of Oak Hall Consulting
Jessica GregoryFounder & CEO
Meet our founder

“I started Oak Hall to make energy market entry feel achievable — and to build a team where talent, not background, decides how far you go.”

With over 20 years’ experience in the retail energy sector, in Ireland and in other jurisdictions, Jessica has helped new entrants become active energy suppliers since 2007. She works hands-on with every client, bringing insight and fit-for-purpose solutions that enhance and develop organisations — making them capable of leveraging any market change or demand they face.

Under her leadership, Oak Hall has grown from a single consultant into a diverse, collaborative team supporting suppliers, large energy users and investors across four continents.

2016Founded Oak Hall
20+Years in retail energy
2007First new-entrant programme
Our people

Passionate people who care about your success.

A collaborative culture of consultants, analysts and specialists. Drag to explore — tap a face to meet them.

Our diverse meritocracy

A workplace where equality isn’t a goal — it’s the standard.

Female leadership, a genuine 50/50 gender balance and colleagues from around the world. Merit decides how far you go here.

7nationalities on the team
13languages spoken between us
50/50gender balance
100%female-led since 2016
How we work

Rooted like an oak. Built to grow.

  1. Clarity over complexity

    Energy markets are complicated. Our advice isn’t. Plain language, clear plans and honest timelines.

  2. Partnership, not handover

    We work alongside your team and stay on after go-live — success is measured in your results, not our reports.

  3. Merit, always

    The best idea wins, wherever it comes from. That’s how we build a team as diverse as the markets we serve.

  4. Care for the outcome

    We care deeply about our clients’ success — and about the energy transition our work contributes to.