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Our Executive

The board formally delegates the day-to-day management of Horizon Power to the Chief Executive Officer and Executive management team.

Horizon Power is structured into six divisions, each with a focus on delivering aspects of its operations, customer services and ongoing business developments.

CEO Stephanie Unwin

As Chief Executive Officer of Horizon Power, Stephanie Unwin leads a 500 strong team of energy professionals to deliver power to some of Western Australia’s most remote and regional communities.

Under her leadership Horizon Power is transforming the energy landscape in an increasingly decentralised delivery model to more than 48,000 connections across 35 microgrids through 2.3 million square kilometres of rugged and remote territory.

Stephanie is passionate about inclusion and diversity to build a transparent environment with an engaged workforce.  Her ability to facilitate change on a foundation of safety is delivering Horizon Power’s vision to create customer choice and be a leader in microgrid technology.

Stephanie is a recognised energy industry leader with significant executive and board-level experience with Zenith Energy, Synergy and Verve Energy, following on from a career in corporate and resources law.  She is a Board Member of the Australian Renewable Energy Agency.

Stephanie brings a depth of experience in transformation and information technology, as well as a strong focus on regional communities, cultural awareness and safety to Horizon Power, fostered during her upbringing in Western Australia’s remote Pilbara region.

Stephanie joined Horizon Power in March 2019.

General Manager Mike Houlahan - Corporate Services and Chief Financial Officer


General Manager Andrew Blaver - Customer Experience


General Manager Tiri Sanderson - Operations

General Manager Darren Hill - Commercial and Business Development


General Manager David Tovey - Employee Experience



General Manager Brett Hovingh - Technology and Transformation


General Manager Evette Smeathers - External Affairs and Communications