Caterpillar and Certarus Sign Memorandum of Understanding to Explore Lower Carbon Energy Solutions - Explore opportunities to leverage each parties' strengths to bring low carbon natural gas energy solutions to off pipeline applications - Explore opportunities to bring hydrogen energy solutions to our combined customers News provided by Share this article Share this article DEERFIELD, Ill., April 26, 2021 /PRNewswire/ -- Caterpillar Inc. (NYSE: CAT) and Certarus Ltd. (Calgary, Alberta) announced today that they have entered a Memorandum of Understanding to explore opportunities to leverage each parties' strengths to bring lower carbon energy solutions to their combined customer base. The MOU outlines key areas where the two companies will work together to advance the use of lower carbon fuels including conventional and renewable natural gas and hydrogen.