Entergy: Data Centre Growth Links to US$5bn Customer Savings

It has been two years since US energy provider Entergy entered the data centre sector, and the utility now places digital infrastructure at the centre of its long term energy strategy.

The New Orleans based company started this push in 2024 from an agreement with Amazon Web Services (AWS) to supply power to two data centre campuses in Madison County, Mississippi.

Since then the utility signed multiple deals to supply electricity for large scale facilities across Arkansas, Louisiana and Mississippi. The customers included hyperscale and digital infrastructure groups: AWS, Meta, Google, Avaio Digital and Hut 8.

According to projections released on 5 March, the contracts linked to these campuses could deliver around US$5bn in savings for the company’s existing electricity customers across the region during the next 20 years.

Data centre demand reshapes energy economics

Hyperscale operators often build campuses with multiple facilities connected to high capacity power networks due to the significant power requirements of data centres.

Mississippi stands out as the biggest beneficiary in Entergy’s projections, with customers in the state potentially seeing around US$2bn in savings over two decades.

Haley Fisackerly, President and CEO of Entergy Mississippi, says the timing matters for customers as infrastructure renewal approaches.

"During a rising cost environment, when we are having to replace two half-century old power plants with new units, securing such relief right now is perfect timing for our residential and small commercial customers," explains Haley Fisackerly, President and CEO of Entergy Mississippi.

Arkansas represents the second-largest projected impact, with up to US$1.7bn in savings. This estimate connects directly to power agreements with Google and data centre developer Avaio Digital.

The Google deal includes support for new energy infrastructure, including a 600MW solar facility and a 350MW battery installation.

"Our customers in Arkansas are going to see bills lower than they otherwise would have been if it had not been for Governor Sarah Sanders' successful recruitment of Google and the Arkansas Public Service Commission's review and approval of the contract," says Laura Landreaux, Entergy Arkansas' President and CEO.

"And this benefit is on top of Google covering its full cost to serve."

Louisiana also benefits from digital infrastructure growth, as Entergy estimates savings of around US$800m for customers in the state.

A major contributor is the company’s agreement with Meta. Entergy says the project supports a reduction of around 10% in storm recovery and grid resilience costs for Louisiana customers.

Regulation and the power supply debate

Entergy’s announcement also feeds into a wider debate about how electricity markets should regulate energy supply for data centre expansion.

The company and its regulators argue that stronger oversight helps ensure reliable generation capacity as demand grows. In contrast, some US states operate deregulated electricity markets where power companies have less authority to plan generation resources.

Phillip May, President and CEO of Entergy Louisiana, says: “Some states have deregulated and not maintained authority over resource adequacy.” 

“In states where this authority has been relinquished without proper oversight, customers are experiencing higher electric bills and serious questions about the future availability of reliable power.”

Large data centres intensify the challenge of resource adequacy because their facilities run continuously and consume large volumes of electricity.

Fair Share Plus and future data centre contracts

To address these pressures, Entergy is introducing a framework called Fair Share Plus. The programme sets guidelines for future agreements with large energy users including hyperscale data centre operators.

Under the framework, customers must agree to multi-year contracts that secure long term electricity demand. Entergy also requires financial safeguards such as cash deposits or letters of credit, which act as collateral guaranteeing payment obligations.

The structure uses early termination penalties if a customer leaves a contract before its agreed term. In addition, new data centre loads connect to the grid only when matching generation capacity is available, linking facility expansion directly to new power supply.

Drew Marsh, Entergy's Chair and CEO, presents the framework as a response to direction from state leadership as data centre investment accelerates.

"State leaders made it very clear to us that protecting and benefiting existing electric customers in our agreements should be our overriding goal,” he says.

As hyperscale infrastructure grows, the relationship between energy planning and data centre development becomes central to how utilities build and finance the power systems that support the digital economy.