British energy company BP has agreed to sell the majority stake in Castrol lubricants to investment firm Stonepeak, which is based in the United States. The sale is part of BP’s strategy to pay off debt and focus on petroleum and gas.
Terms of Sales & Strategic Perspective
BP has agreed to sell a 65% interest in Castrol to Stonepeak at net proceeds of approximately $6 billion with an enterprise value of $10.1 billion.
BP will retain a 35% interest in the joint venture, which it can later sell within a stipulated lock-in period of two years.
The deal is expected to be completed by the end of 2026 subject to approvals from the relevant authorities.
Canada Pension Plan Investment Board will invest a maximum of $1.05 billion in an indirect minority stake in Castrol.
BP expects the proceeds to lower its net debt, which stood at $26.1 billion at the end of the third quarter of 2025, to between $14 billion and $18 billion at the end of 2027.
Why the Sale Matters
The package is the biggest in BP’s strategy to shed $20 billion worth of assets by the end of 2027.
The Castrol joint venture gives BP the opportunity to focus on activities that yield higher returns in the oil and gas segment.
Castrol is an entity that earns consistent revenues from the automobile and industrial sectors but may influence BP’s earnings base.
Investor and Market Reaction
Castrol India stocks rose as high as 9% after news of the announcement on December 24, 2025.
Stonepeak and Canada Pension Plan Investment Board are making an offer for a stake of up to 26% in Castrol India at 194.04 rupees a share, a premium of 2.5%, as required by regulations in India.
The two may thereby acquire control of the Indian subsidiary.
Strategic Shift at BP
The stake sale in Castrol fits in with BP’s transformation under its new management’s helm.
Meg O’Neill, the previous CEO of Woodside Energy, is set to succeed Murray Auchincloss as BP’s CEO starting April 1, 2026.
BP’s shareholders are pushing the firm to increase its margins and minimize its reliance on low-growth areas of the business.
What Comes Next
The agreement requires competition clearance in major markets.
After the completion of the acquisition, Stonepeak will have a majority interest in Castrol, with BP holding a minority interest and sharing future growth.
Analysts will closely follow the Castrol India equity offering and further divestitures by BP to reach its $20 billion target.
