Calumet's Montana Renewables Advances Sustainable Aviation Fuel Production in Q2 2026

Calumet Specialty Products has reported its second quarter 2026 financial results, posting a net loss of $95.9 million, or $(1.09) per basic common share, according to a filing released via PR Newswire. The company attributed the headline loss primarily to non-cash Renewable Identification Number (RIN) obligations and other mark-to-market items, which obscured what the company characterised as solid underlying operational performance. Despite the reported net loss, Calumet recorded Adjusted EBITDA with Tax Attributes of $175.2 million for the quarter, a figure the company highlighted as a more representative measure of its operational health and cash generation capacity. ## Montana Renewables Milestone Of particular significance to the broader energy and maritime fuels sector, Calumet's Montana Renewables subsidiary completed the first phase of its MaxSAF® 150 project during the quarter. The MaxSAF® programme is designed to scale up the facility's sustainable aviation fuel (SAF) production capacity, positioning Montana Renewables as one of the larger dedicated SAF producers in North America. The advancement of large-scale SAF production carries direct implications for the maritime and aviation industries, both of which are under increasing regulatory and commercial pressure to reduce lifecycle carbon emissions. While SAF is primarily targeted at aviation, the underlying feedstock processing and renewable fuel infrastructure developments at facilities such as Montana Renewables are closely watched by the marine fuels sector as the industry evaluates pathways toward low-carbon alternatives. ## RINs Volatility Weighs on Results The non-cash RINs mark-to-market impact that drove the reported net loss reflects ongoing volatility in the US renewable fuels credit market. RINs are tradeable credits generated under the US Renewable Fuel Standard (RFS), and fluctuations in their market value can create significant non-cash swings in reported earnings for producers and obligated parties alike — a dynamic that continues to complicate financial reporting across the renewables and specialty fuels sector. Calumet's results underscore the financial complexity facing companies operating at the intersection of conventional and renewable fuel production, as they navigate compliance costs, credit market volatility, and capital-intensive capacity expansions simultaneously. Full details of Calumet's Q2 2026 results are available via the company's investor relations disclosures on PR Newswire.