The MOU establishes a framework for the parties to assess how Energy Dome’s proprietary technology, based on its patented CO2 Battery system, will support NUAI’s planned deployment of large-scale power capacity to meet the energy demand of its AI-optimized 1GW+ data center. Key priorities include maximizing speed to power, reducing reliance on constrained grid interconnection timelines, ensuring the high levels of availability required for mission-critical data center operations, and supporting lower-emissions power generation.
Energy Dome’s CO2 Battery Plus technology is designed to enhance the efficiency and flexibility of gas-fired generation by integrating energy storage with waste heat recovery. When deployed alongside Open Cycle Gas Turbines (OCGTs), the system has the potential to increase available power output, improve operational flexibility and reduce emissions, supporting the requirements of large-scale AI and data center workloads.
The CO2 Battery technology stores electricity by compressing CO2, and in the traditional CO2 Battery configuration, both pressure and heat generated during the charge phase are retained separately by design, with the heat stored in a dedicated thermal storage system for later use during the discharge phase. By contrast, in the CO2 Battery Plus configuration, the system uses direct waste heat from the OCGT(s)’ exhaust during the discharge phase, instead of storing it beforehand.
By replacing stored heat with directly supplied waste heat, the system greatly improves efficiency, enables combined-cycle-like performance, and is more cost-efficient. The CO2 Battery Plus can operate across three distinct modes:
Charge Mode
During low-demand hours or periods of excess renewable production, power is used to compress gaseous carbon dioxide, which is then stored in its liquid form in standard pressure vessels.
Discharge Mode (SuperBoost)
During peak-demand hours, the liquid carbon dioxide is evaporated and heated using heat from the gas turbine(s) exhaust(s), driving an expander and thereby running the CO2 Battery turbine, providing additional power comparable to that of an additional gas turbine of the same type, hence more than doubling its output (>100%).
Generation Mode (Boost)
The CO2 Battery compressor and turbine run simultaneously, with no net mass transfer between the gas and liquid carbon dioxide storage. The gas is looping in a closed cycle, increasing the net power output of the gas turbine by up to 25%.
