Calor, the gas supplier serving homes and businesses across Northern Ireland, has appointed Sytze Nijman as its new Chief Executive Officer.

Nijman joined Calor in September 2025 as Chief Operating Officer. Before that, he was COO at SunSource, an SHV Energy company, where he helped drive growth and led the successful integration of the business within SHV Energy.

He brings several decades of experience in business transformation, growth initiatives and acquisition integrations across international markets including Europe, Brazil and India, within the energy and industrial services sectors. Across the SHV group, he has also held senior roles as Managing Director at ERIKS in Belgium and Project Manager at Supergasbras in Brazil.

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As CEO, Nijman will oversee Calor's next phase of expansion in Northern Ireland, focusing on innovation, operational excellence, customer experience and strengthening the company’s contribution to the region’s energy transition. The appointment comes as Calor continues to invest heavily in its operations to support growth and customer service.

Nijman takes over from Duncan Osborne, who is stepping down after seven years as Chief Executive Officer, a period in which he led significant operational growth and the initial rollout of renewable energy initiatives.

Nijman said: "It is a privilege to take on the role of CEO at Calor. Calor has a proud heritage, an exceptional team, and a vital role to play in supporting Northern Ireland's energy transition. My priority is to build on the strong foundations already in place, driving sustainable growth while maintaining the highest standards of safety, compliance, and operational excellence.

"We will continue to strengthen the customer experience by investing in innovation, digital technologies, and solutions that make it easier to do business with us. Working alongside our employees, customers, and partners, I look forward to building on Calor’s success and presence in Northern Ireland in creating long-term value for all our stakeholders."