INPP secures preferred bidder status for Sizewell C nuclear project

International Public Partnerships (INPP) has been selected as the preferred bidder for a 3% stake in the Sizewell C nuclear power project, committing approximately £250 million to be deployed over five years. This strategic investment, structured under a Regulated Asset Base (RAB) model, is expected to provide INPP with inflation-linked cash flows and an immediate yield from financial close in Q4 2025, with protections against construction overruns. The 3.2GW plant, vital for UK energy security, is projected to represent 10% of INPP's portfolio by net asset value once fully invested by 2030, offering attractive risk-adjusted returns in a regulated utility asset.

Analysis

International Public Partnerships Limited (INPP) has secured a strategic position in the UK's energy infrastructure by becoming the preferred bidder for a 3% stake in the Sizewell C nuclear project, with a total commitment of approximately £250 million deployed over five years. The investment is structured under the Regulated Asset Base (RAB) model, which is designed to provide predictable, inflation-linked cash flows and an immediate cash yield commencing from the financial close in Q4 2025. This structure, combined with explicit protections against construction overruns and the use of a standardized design replicating Hinkley Point C, mitigates significant project risks. Upon full investment by 2030, this asset is projected to represent a substantial 10% of INPP's portfolio by net asset value. The initial funding demonstrates disciplined capital recycling, utilizing proceeds from a £49 million partial divestment of its schools portfolio. Concurrently, INPP's reaffirmation of its ongoing £200 million share buyback program signals confidence that this long-term growth initiative does not compromise its commitment to immediate shareholder returns.

Key Decisions for Investors

• Investors should view this transaction as a long-term positive, as it adds a large-scale, regulated asset expected to generate stable, inflation-protected cash flows, enhancing the predictability of future earnings.
• The dual strategy of funding a major growth project while continuing a £200 million share buyback program demonstrates capital discipline and should be viewed as a signal of management's confidence in the company's financial health.
• While the investment structure includes risk protections, investors should monitor key milestones such as the financial close in Q4 2025 and subsequent construction progress, as execution on a project of this scale remains a critical variable.
• Consider the future portfolio concentration, as Sizewell C is expected to constitute approximately 10% of NAV by 2030, which increases the company's exposure to the success of a single, large-scale infrastructure asset.