Sierra Energy Announces Promotion of Johan van Walsem to Company President


DAVIS, Calif., August 4, 2022 /PRNewswire/ — Sierra Energy is pleased to announce that Johan Van Walsem was promoted to President and Chief Operating Officer, effective immediately. In this newly created role, Mr. van Walsem will focus on executing the strategic goal of commercializing and deploying the company’s FastOx gasification technology for converting waste to energy and products internationally. .

President and CEO mike hart will continue to lead the strategic direction of the business to ensure the transformational potential of FastOx technology is fully realized.

Mr. van Walsem joined Sierra Energy in December 2019 as COO. Under his leadership, the company has made great strides and gained significant commercial traction with strong interest from international partners to license FastOx gasification technology. In addition, he will lead the company’s efforts to explore project opportunities in United States where it can capture significant value by building, owning and operating a FastOx gasification demonstration facility.

Prior to joining Sierra Energy as COO, Mr. Van Walsem held similar positions at Metabolix and Lygos, successfully leading the scale and commercialization of bio-based products for both entities.

Mr. van Walsem holds a Masters in Chemical Engineering from the University of Pretoria in South Africa and an MBA from the University of South Africa. He began his career executing engineering projects and operating coal-to-ammonia gasification and lysine-based fermentation plants in South Africa.

Sierra Energy is a waste gasification company founded in Davis, California. The company has developed FastOx gasification, a technology that transforms waste into particulate, tar-free syngas suitable for downstream conversion into clean, renewable energy and fuels without creating new waste by-products. Sierra Energy believes that gasification is the path to a zero-waste future for all of us. Visit for more information or follow us on Twitter via @FastOx.

SOURCESierra Energy Corp


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