Tiger Infrastructure Partners, an infrastructure investor has appointed Steve Holliday, Graham Sharp, and Christine Weydig as operating partners.

The new hires bring decades of expertise in energy policy, energy transition, and business building to the firm. Holliday previously served as the chief executive of National Grid plc and serves as the current chairmen of TIP’s Zenobe Energy. Weydig joins the firm following her time as director of sustainability with the Port Authority of NY & NJ. In his time before TIP, Sharp served as the founder of global energy trader, Trafigura.

“Our human capital is crucial to our hands-on value creation strategy,” said Tiger CEO Emil Henry, Jr. “Steve, Christine and Graham bring a depth of expertise and experience directly relevant to Tiger’s target markets. We look to our Operating Partners to provide us an edge in evaluating and managing investments and I have no doubt that Steve, Christine and Graham will serve well this critical purpose.”