US energy project developer ONE Nuclear has unveiled the Louisiana Portfolio, a 5 GW energy and technology programme comprising three projects in the US state of Louisiana (ONE Nuclear press release, 10/09/2026). The portfolio is intended to meet rising electricity demand from data centres, advanced manufacturing and other industrial customers.
Following the announcements of Project Cayman and Project Amberjack earlier in August and September 2026, ONE Nuclear has now outlined the full Louisiana portfolio, comprising Cayman, Amberjack and Barracuda, with each project serving a different purpose in the state.
- Project Cayman would account for the largest share of the portfolio, combining 2.88 GW of natural-gas generation with battery storage. The project could also feature a data centre technology campus, allowing large customers to access dispatchable power near their facilities.
- Project Barracuda would provide an additional 1.2 GW of natural-gas generation, alongside 300 MW/1.2 GWh of battery storage. The proposed energy park could accommodate up to 1 GW of critical data-centre IT capacity, establishing a dedicated power and computing hub.
- Project Amberjack follows a different approach, with plans for a standalone small modular reactor (SMR) campus targeting up to 1 GW of advanced nuclear generation.
Together, the three projects are designed to address different aspects of the power challenge. Natural-gas generation would supply dispatchable electricity, battery storage would help balance demand and store power, while nuclear generation would provide a longer-term source of stable electricity.
Such projects are becoming increasingly common as the US seeks to meet surging electricity demand from data centres, which are expected to account for a significant share of overall power consumption in the near future. Overall, electricity consumption has increased by 2%/year since 2023, following a 2% decline in 2023 and annual growth of 2% between 2020 and 2022, according to our data (Enerdata Global Energy Research).
The rise in demand is also putting increasing pressure on governments. The state of Massachusetts has just adopted significant restrictions on data centre development, including a requirement for companies to secure their own renewable energy supply (KEI, 11/09/2026). Several other US states, including New Jersey, New York and Pennsylvania, have either suspended or introduced new restrictions on data centre development amid growing opposition from local communities.
Electricity supply will need to expand at a pace comparable to demand, but this objective is being challenged by the Trump administration’s policies on renewable energy development. Instead, the US administration is placing particular emphasis on thermal and nuclear power.
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