Wärtsilä continues to lead the field in the transition to carbon-neutral energy solutions. Our depth of experience and expertise in biogas upgrading technologies is unmatched in the industry, and our mixed refrigerant technology is extremely reliable whilst offering the lowest operating costs for liquefying biogas. We are proud to have once again been selected by St1 since it represents a clear endorsement of customer satisfaction, commented Rolf Håkansson, Sales, Wärtsilä Gas Solutions, Biogas Solutions.