January 31, 2026: One-time co-founder and chief operating officer of Aqua Metals, Selwyn Mould, has joined Proof Energy as COO.

Mould announced the appointment on January 27.

Proof Energy is commercializing metal supported solid oxide fuel cells (M-SOFC) for use in heavy duty commercial vehicles and distributed stationary power generation.

Mould was with Aqua Metals for nearly five years from February 2014, during which he helped build the engineering and manufacturing team that created the novel lead recycler’s proprietary technology, equipment and processes.

In 2018, when Steve Clarke stepped down as Aqua Metals CEO, chairman and director, he was replaced as CEO by Mould for an interim period.

In 2020, a court case against Aqua Metals and co-founders Mould, Clarke and Tom Murphy — concerning claims about the firm’s recycling technology and commercialization process — was thrown out.