Core Insights - The costs of Aker BP's major oil and gas development projects, Yggdrasil and Valhall-Fenris, have increased significantly, with Yggdrasil rising by 32% and Valhall-Fenris by 25% compared to nominal estimates from a year ago [1] Cost Increases - Yggdrasil project costs have risen by 32% from previous estimates [1] - Valhall-Fenris project costs have increased by 25% from nominal estimates a year ago [1]