Conservative nightmare: How £42 Million Socket became a £1 Asset
In the summer of 2010 under the Conservatives , Britain’s political and energy establishment gathered in Cornwall to celebrate a world-leading project. Off the coast of Hayle, engineers lowered a yellow underwater “socket” onto the seabed. Wave Hub, they promised, would unlock the power of the Atlantic, create thousands of jobs, and put the UK at the forefront of marine renewable energy.
Fifteen years later, that same asset has completed a journey that reads like a case study in public-sector risk and private-sector reward. The original £42 million publicly funded test site was sold for £2.4 million. The company that owned it was later sold for £1. The taxpayer took almost the entire loss.
A White Elephant from the Start
Wave Hub was conceived as a grid-connected test centre for wave energy devices. Funding came from three public sources: the South West of England Regional Development Agency (£12.5 million), the European Regional Development Fund (£20 million), and the UK government (£9.5 million). Contemporary reports consistently put the total public cost at around £42 million.
The infrastructure itself—a four-berth seabed hub, 16 km of cable, and an onshore substation—was installed in 2010. It was designed to handle up to 20–48 MW of wave power. In practice, it generated almost nothing. By 2018, local reporting revealed that the facility had produced less electricity than a single domestic solar panel over several years of operation. Critics called it a “white elephant.” One former wave energy executive described the site as conceptually flawed and poorly located.
Ownership passed from the regional development agency to central government, then in 2016–17 to Cornwall Council as part of a devolution deal. The local authority received additional public money to cover ongoing costs and potential decommissioning. Still, commercial wave energy never materialised.
The £2.4 Million Sale
In 2021, Cornwall Council sold the assets of Wave Hub Limited to Swedish floating wind developer Hexicon for £2.4 million. Hexicon, through its UK subsidiary, acquired the grid connection, seabed hub, cables, substation, and sea-bed lease. The plan was straightforward: convert the failed wave test site into a 32 MW floating offshore wind demonstrator called TwinHub.
Hexicon successfully re-permitted the site and, in 2022, secured a landmark Contracts for Difference (CfD) in Allocation Round 4—the first ever awarded to a floating wind project in the UK—at a strike price of £87.30/MWh (2012 prices). For a moment, it looked as though the original public investment might finally deliver some return.
Inflation, Costs, and Collapse
That optimism did not survive contact with reality. Between 2022 and 2025, inflation and supply-chain pressures sharply increased the cost of floating wind foundations, turbines, and installation. In December 2025, Hexicon recognised a significant impairment on the project. In March 2026, the Low Carbon Contracts Company terminated the CfD.
On 10 April 2026, Hexicon announced it had sold its entire 100% stake in Wave Hub Ltd—assets and liabilities included—for a total consideration of £1 to an unnamed “leading global provider of advanced maritime and offshore engineering solutions.”
The buyer was later confirmed as Seatrium, the Singaporean state-linked offshore engineering group. Seatrium intends to use the site to test its own floating foundation design. The project is now eligible to bid again into future CfD round
The Pattern of “De-Risking”
The numbers are stark. Public money built the original infrastructure at a cost of roughly £42 million. It was sold for £2.4 million. The company holding those assets was later transferred for £1. The physical assets—cables, hub, grid connection, and lease rights—still exist and retain strategic value in the Celtic Sea, one of Europe’s best floating wind resource areas. Yet the British taxpayer has effectively written off almost the entire original investment.
This sequence follows a familiar pattern in UK energy policy. Experimental or early-stage infrastructure is funded by the public purse under the banner of “de-risking” new technologies. Private developers are then invited in with subsidies or contracts. When costs rise or technology fails to commercialise on the expected timetable, the public sector absorbs the losses while private or foreign entities acquire the remaining assets at distressed prices.
Wave Hub never generated meaningful power as a wave project. TwinHub never reached construction as a floating wind project under its first owner. The site may yet produce electricity under Seatrium’s ownership. Whether it does or not, the original public investment has already been largely lost.
What It Reveals
The story of Wave Hub is not primarily about the difficulty of developing floating wind or wave energy. Both technologies face genuine technical and commercial challenges. The deeper issue is the repeated willingness of successive governments to commit large sums of taxpayer money to speculative energy projects with weak commercial discipline, limited parliamentary scrutiny, and inadequate mechanisms for recovering value when those projects fail.
In the language of the original X post that brought renewed attention to the case in August 2026: the taxpayer takes the risk. A lucky investor buys the assets. Rinse and repeat.
Britain still needs new low-carbon generation, including floating wind in deeper waters. It does not need another generation of publicly funded test sites that end up on the balance sheet of foreign engineering groups for the price of a cup of coffee.
