Rockhopper Exploration shows upside to Sea Lion expansion as JV partner advances Central push

Energy Written by: Jamie Ashcroft 07:18 Wed 26 Aug 2026 --> Disclaimer No investment advice About this content Editorial Standards & Policies Share article About this content × About Jamie Ashcroft Jamie Ashcroft, the News Editor for Proactive UK, has developed an impressive career in financial journalism, focusing on the small-cap sector for over fourteen years. Before joining the Proactive team, he was a stockbroker during the global financial crisis, a role that complemented his educational background - a first-class degree in Business and Economics and qualifications in software design and development. As one of the early external hires at Proactive in 2009, Jamie contributed... Read more About the publisher Proactive financial news and online broadcast teams provide fast, accessible, informative and actionable business and finance news content to a global investment audience. All our content is produced independently by our experienced and qualified teams of news journalists. Proactive news team spans the world’s key finance and investing hubs with bureaus and studios in London, New York, Toronto, Vancouver, Sydney and Perth. We are experts in medium and small-cap markets, we also keep our community up to date with blue-chip companies, commodities and broader investment stories. This is content that excites and engages motivated private investors. The team delivers news and unique insights across the market including but not confined to: biotech and pharma, mining and natural resources, battery metals, oil and gas, crypto and emerging digital and EV technologies. Use of technology Proactive has always been a forward looking and enthusiastic technology adopter. Our human content creators are equipped with many decades of valuable expertise and experience. The team also has access to and use technologies to assist and enhance workflows. Proactive will on occasion use automation and software tools, including generative AI. Nevertheless, all content published by Proactive is edited and authored by humans, in line with best practice in regard to content production and search engine optimisation. Rockhopper Exploration PLC ( AIM:RKH ) View Price & Profile Rockhopper Exploration shows upside to Sea Lion expansion as JV partner advances Central push Published: 07:18 26 Aug 2026 BST Rockhopper Exploration PLC (AIM:RKH) said the value of its interest in the Sea Lion development has risen sharply after an updated independent assessment incorporated more resources and the accelerated development of the field's Central Development Area. It comes as JV partner Navitas is advancing plans to accelerate and expand efforts into the Falklands field's Central Development Area (CDA), with an additional FPSO (floating production storage and offloading) vessel, with a project that Rockhopper recently noted would require additional funding. The Netherland, Sewell & Associates evaluation increased the NPV10 attributable to Rockhopper's 35% interest across 2P reserves and development-pending 2C resources by around $788 million compared with the December 2025 assessment. Based on the figures published, those categories now carry a combined NPV10 of roughly $2.96 billion. The field's gross 2P reserves stand at 314.3 million barrels, equivalent to almost 110 million barrels net to Rockhopper, with an NPV10 of $1.18 billion. Gross 2C contingent resources total 626.1 million barrels, or 219.1 million barrels attributable to Rockhopper, while development-pending 2C resources have an NPV10 of $1.78 billion. The latest evaluation incorporates the accelerated Central Development Area, which the operator intends to develop using the OSX-1 FPSO, alongside updated commodity-price assumptions. Rockhopper holds a 35% interest in Sea Lion in the North Falkland Basin, where development has been sanctioned. Continue reading