Masdar Closes $6.1 Billion Financing for World's First 24/7 Solar-Storage Project

Masdar has reached financial close on a $6.1 billion project combining 5.2 gigawatts of solar with 19 gigawatt-hours of battery storage to deliver 1 gigawatt of continuous clean power around the clock, backed by a $5.1 billion financing package from 13 international and local banks. The Round-the-Clock, or RTC, project is being developed in Abu Dhabi with Emirates Water and Electricity Company and is described as the world's first gigascale facility of its kind. Masdar is funding $1 billion of the total investment in equity, with construction under way since October 2025 and operations expected in 2027.

 

Solving Solar's Oldest Problem

 

The project's significance lies in what it claims to solve: the intermittency that has always limited solar power's usefulness as baseload generation. Solar panels only generate electricity when the sun shines, which means standalone solar has traditionally needed to be paired with other power sources, typically fossil fuel plants, to guarantee supply overnight or during cloudy periods. By pairing 5.2 gigawatts of solar generation with 19 gigawatt-hours of battery storage, large enough to bank surplus daytime generation and discharge it through the night, the RTC project is designed to deliver a steady 1 gigawatt of continuous output regardless of the time of day.

That distinction matters because it repositions solar and storage from a variable, weather-dependent resource into something closer to a conventional baseload power plant, the kind of always-on generation that grid operators have historically relied on coal, gas or nuclear to provide. If the project performs as designed, it demonstrates that combined solar-storage systems can now deliver the reliability once considered the exclusive domain of fossil and nuclear generation, at gigawatt scale.

 

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What 13 Banks Signing On Signals

 

The breadth of the lending consortium, spanning Gulf, European and Asian institutions including HSBC, BNP Paribas, Bank of China and Standard Chartered, is itself a notable data point. Financing a project of this technical complexity and scale requires lenders to be confident not just in the underlying economics but in the bankability of round-the-clock renewable infrastructure as an asset class, something that has historically been harder to finance than conventional solar or wind because storage adds cost and engineering complexity without a long operating track record to draw on.

Thirteen banks committing to a $5.1 billion package suggests that combined solar-storage projects at gigawatt scale have moved from a demonstration technology to something the international banking community now treats as commercially bankable infrastructure. Masdar's chief financial officer, Mazin Khan, framed the financing as evidence of confidence not only in the project itself but in the company's execution track record and long-term growth strategy, positioning the deal as validation of Masdar's broader capacity to mobilise capital for increasingly complex renewable projects.

 

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Why the Timing Matters

 

The project's backers point directly to the demand context driving its rationale: accelerating electricity consumption from AI, data centres and advanced manufacturing, all of which require continuous, reliable power rather than the variable output solar and wind typically provide on their own. As those demand sources grow, utilities and large power buyers are increasingly seeking exactly the kind of firm, round-the-clock clean generation this project is designed to deliver, rather than intermittent renewable capacity that still requires fossil backup.

For the UAE specifically, the project is framed as a cornerstone of national clean energy strategy, contributing to both energy security and economic diversification away from oil-dependent generation. It also sits within Masdar's much larger ambitions: the company already operates a portfolio exceeding 65 gigawatts across solar, onshore and offshore wind, battery storage and hybrid technologies, with a stated target of reaching 100 gigawatts of capacity by 2030. Whether RTC delivers its promised continuous output once operational in 2027, and whether the financing model proves replicable for future gigascale storage-backed renewable projects elsewhere, will determine whether this becomes a template the wider industry follows or remains a singular flagship project.

 

Source: Masdar