ENERGY & TRANSITION DESK · DISPATCH
United Solar, the Oman-based polysilicon producer, completed a US$1.6 billion capital raise for what is now the largest polysilicon facility outside China. The International Finance Corporation supplied roughly US$480 million in long-term debt and a US$50 million equity investment, and arranged or mobilized about 30 percent of the total. The Oman Investment Authority, the sultanate's sovereign wealth fund, put in US$260 million. A further US$400 million came as debt and working-capital facilities from banks across the Middle East. The plant, in Sohar Free Zone, has been running since January and is expected to reach up to 100,000 tonnes of output by year-end.
Polysilicon is the feedstock for solar-panel production, and the overwhelming majority of global refining happens in China. The cost of capital for production elsewhere is brutally high — both because the chemistry is difficult, one of the most energy-intensive industrial processes there is, and because Chinese dominance has priced every alternative off the margin. Financing a polysilicon plant outside China is not a normal infrastructure play; it is a deliberate, capital-intensive decision to accept unfavorable economics in service of supply-chain sovereignty.
That decision is carried, here, by two public balance sheets at once: the International Finance Corporation, the World Bank's private-sector arm, and the Oman Investment Authority, the sultanate's own sovereign fund. Between them they account for well over half the raise. IFC participation signals two things — that this is not a purely commercial play, and that it carries a geopolitical intent a development-finance institution finds worth associating with. The Omani sovereign contribution says something different and more pointed: the host state is not merely permitting the facility, it is an owner of it.
The Gulf angle is as important as the supply-chain one. Oman has historically been the least Sino-aligned Gulf state — a balancer, a trader, a player that hedges between great powers. An investment in Omani polysilicon is an investment in a jurisdiction that sits between Beijing and Washington without tilting sharply to either, which makes it a plausible site for an alternative-supply facility in a way that a more firmly Beijing-anchored Gulf state would not be.
The stage is what matters, and it is further along than most statecraft events this desk covers. This is not an announced facility, an MOU, or an approved envelope, and it is not a pre-construction financial close either — the plant has been operating since January. What closed here is the capital structure behind a facility that already exists and already produces. The risk that remains is therefore not commissioning risk but market risk: whether a plant built deliberately outside the low-cost Chinese base can hold its output economics once Chinese producers respond on price. Watch the ramp toward 100,000 tonnes, and watch the realized selling price against it.
The U.S. angle is not direct investment but alliance coordination. Washington has been funding critical-mineral alternatives and rare-earth processing outside China for years; this is the solar-supply parallel — a facility financed on development-bank and sovereign capital to produce feedstock for an industry the U.S. aims to shape. It is capital statecraft: not a tariff or a trade restriction, but a capital redeployment that makes alternative supply feasible where it was not before. The test is whether enough capacity outside China comes online in the next three years to shift the marginal cost of solar supply, or whether Chinese producers simply lower prices and starve the alternative.
— Capital Statecraft Intelligence · Energy & Transition Desk
Primary source(s): United Solar / IFC announcement, July 2026 (PR Newswire); AGBI; pv magazine