The plants provide the equivalent power required by 920,000 Saudi households. Credit: GE Vernova.

Electric services company GE Vernova and Saudi Arabia’s Ash Sharqiyah Operations & Maintenance Company (ASHOMCo) have concluded three front-end engineering design (FEED) studies to reduce the net carbon emissions of three cogeneration plants in Saudi Arabia.

The studies assessed the feasibility of pre-combustion and post-combustion technologies to lower emissions at plants delivering up to 920MW of power and 1,400 tonnes per hour of steam.

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The cogeneration plants, equipped with GE Vernova’s 7E and 7F gas turbines, underwent a hydrogen-readiness assessment.

This included the evaluation of performance improvements and cost efficiencies for potential carbon capture, utilisation and sequestration systems.

The plants, which provide the equivalent power needed by 920,000 Saudi homes, could benefit from these enhancements.

ASHOMCo executive manager Rob Hayes stated: “Our participation in the GE Vernova-led studies underscores our dedication to accelerating advanced solutions for potentially retrofitting the existing power plants to meet stringent carbon emission standards, a vital step towards producing more sustainable energy.

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“GE Vernova led the full-scale integration of the study with the ultimate goal of lowering the net carbon emissions of the three power plants.”

GE Vernova’s FEED studies investigated the capability of the gas turbines to operate using a mix of natural gas and hydrogen, with the potential for hydrogen to constitute up to 32% by volume.

The studies outlined necessary modifications to the existing combustor systems to achieve this blend level, enhancing the sustainability of the plants’ operations.

Furthermore, the studies explored retrofitting options for the plants with technology to capture up to 95% of CO₂ emissions.

The integration of GE Vernova’s exhaust gas recirculation (EGR) system was identified as a means to reduce the total cost of the carbon capture facility by more than 7%, compared to traditional carbon capture and storage installations without EGR.

An additional 6% annual reduction in operational costs for carbon capture was projected under the site conditions analysed.

GE Vernova Gas Power business in Europe, Middle East and Africa president and CEO Joseph Anis stated: “The first of this kind carbon capture assessment accomplished in the Kingdom of Saudi Arabia by GE Vernova proposes significant enhancements aiming to improve the proposed carbon capture process and reduce its impact on the power plants’ output, performance and equipment costs.”