Sudair Solar Plant

The Sudair Solar Plant is the largest solar photovoltaic project in Saudi Arabia and one of the largest single-site solar installations in the world, with a total capacity of 1.5 gigawatts (GW). Located approximately 150 kilometers north of Riyadh in the Sudair Industrial City, the project represents a flagship achievement of the Kingdom’s National Renewable Energy Programme and a demonstration of Saudi Arabia’s commitment to scaling clean energy at unprecedented pace.

Project Scale and Specifications

The Sudair plant covers an area of approximately 35 square kilometers, utilizing millions of high-efficiency solar panels to generate clean electricity. At full output, the plant produces enough electricity to power approximately 185,000 Saudi homes and displaces an estimated 2.9 million tonnes of carbon dioxide emissions annually compared to equivalent gas-fired generation.

The project employs bifacial solar module technology, which captures sunlight on both the front and rear surfaces of each panel. The desert terrain’s high albedo (ground reflectivity) enhances the performance of bifacial modules, increasing total energy yield by 10 to 15 percent compared to monofacial panels. Single-axis tracking systems orient the panels to follow the sun’s path throughout the day, further maximizing energy capture.

Development and Ownership

The Sudair Solar Plant is developed and operated by a consortium comprising ACWA Power, Saudi Arabia’s leading renewable energy developer, and the Badeel (formerly known as the Saudi Renewable Energy Holding Company), a subsidiary of the Public Investment Fund dedicated to renewable energy investments.

ACWA Power holds the operational lead, bringing its extensive experience in renewable energy project development, construction management, and operations across the Middle East, Africa, and Central Asia. PIF’s involvement through Badeel ensures strategic alignment with national energy objectives and provides sovereign-backed creditworthiness to the project structure.

Commercial Structure

The project operates under a 25-year power purchase agreement with the Saudi Power Procurement Company (SPPC), a government entity that aggregates renewable electricity for distribution through the national grid. The PPA provides long-term revenue certainty, enabling project financing at competitive rates and ensuring investor returns over the concession period.

The tariff achieved through competitive bidding is among the lowest globally for solar PV of this scale, reflecting Saudi Arabia’s exceptional solar resource, competitive financing conditions, and the operational efficiencies gained from deploying at gigawatt scale.

Construction

The construction of a 1.5 GW solar plant represents an enormous logistical and engineering undertaking. The project required the installation of millions of solar modules, hundreds of kilometers of electrical cabling, multiple inverter stations, a dedicated high-voltage substation, and transmission lines connecting the plant to the national grid.

Construction mobilized thousands of workers and required extensive supply chain coordination for panel procurement, structural steelwork, and electrical equipment. The project contributed significantly to local employment and economic activity in the Riyadh region during its construction phase.

Grid Integration

Integrating 1.5 GW of solar capacity into the Saudi grid required coordination with the Saudi Electricity Company (SEC) to ensure that the existing transmission infrastructure could absorb the output. The Sudair plant’s location in the central region provides proximity to Riyadh, the Kingdom’s largest electricity demand center, reducing transmission losses and enhancing the project’s economic value.

The plant’s output profile, which peaks during the afternoon hours when Saudi air conditioning demand is highest, provides well-matched generation that reduces reliance on gas-fired peaking plants during the hottest periods of the day.

Strategic Significance

Sudair represents a proof point for gigawatt-scale solar deployment in Saudi Arabia. Its successful development and operation demonstrate that the Kingdom can plan, finance, construct, and integrate solar projects at a scale that meaningfully contributes to its energy mix. The project validates the NREP procurement model and builds confidence for the even larger solar projects in the development pipeline.

The economic case for Sudair is compelling. At its contracted tariff, the plant produces electricity at a fraction of the cost of new gas-fired generation, freeing natural gas for higher-value uses including petrochemical feedstock and export. Over its 25-year life, the plant will generate significant economic value while avoiding tens of millions of tonnes of carbon emissions.

Contribution to Vision 2030

The Sudair Solar Plant directly supports multiple Vision 2030 objectives. It advances the renewable energy target of 50 percent of generation by 2030. It supports the net-zero by 2060 commitment through clean generation. It develops the domestic renewable energy industry, creating Saudi jobs and building technical expertise. And it reduces the Kingdom’s internal consumption of hydrocarbons for power generation, preserving crude oil and gas for higher-value export and industrial applications.

The project stands as tangible evidence that Saudi Arabia’s energy transition ambitions are being translated into physical infrastructure at world-leading scale.