Google has agreed to buy nuclear power from small modular reactors developed by Kairos Power, with supply planned to begin in 2030, as the company seeks electricity for its AI data centers. In a separate agreement, Constellation Energy will invest $4.3 billion to upgrade 11 nuclear units in three states. Together, the deals tie Google’s expanding computing demand to both future reactors and existing nuclear plants.
Two agreements, two routes to nuclear power
The Kairos Power arrangement, agreed with the Tennessee Valley Authority, is intended to provide nuclear electricity to Google data centers in Tennessee and Alabama beginning in 2030. It centres on small modular reactors, a technology intended to produce power from smaller reactor units rather than relying only on large conventional plants.
The Constellation agreement addresses existing facilities instead. The company plans to invest $4.3 billion in upgrades at 11 nuclear units across three states, while a 20-year power-purchase agreement with Google is designed to provide revenue for efficiency improvements. One deal looks to new capacity; the other seeks to strengthen generation already in operation.
Why data centers are driving the commitment
AI operations depend on data centers, where computing equipment runs continuously and requires substantial electricity. Google’s agreements make power procurement part of its AI expansion: the company is not only seeking to buy energy, but also helping support the projects and plant work intended to supply it.
The nuclear focus reflects the appeal of a steady electricity source for facilities with ongoing demand. The announcements do not specify how much power Google’s AI operations require, or how much of the company’s overall electricity use these deals will cover. They do, however, identify Tennessee and Alabama as locations for the Kairos-linked supply and set 2030 as its planned starting point.
New reactors will take time
The Kairos Power agreement is a forward-looking commitment: its supply is scheduled to start in 2030, rather than immediately. That timing means the deal is not a near-term answer to data-center demand. Its value to Google depends on the reactors being developed and delivering electricity on the announced schedule.
The partnership with the Tennessee Valley Authority links the planned supply to two states where Google has data centers. The available announcement does not give a capacity figure for the Kairos deal, the number of reactors, or a construction timetable beyond the 2030 start. Those details limit how much can be concluded about the scale of the future supply.
Constellation’s upgrades support existing plants
Constellation’s $4.3 billion investment is directed at improving 11 nuclear units in three states. Rather than waiting for a new reactor fleet, the plan targets operating plants, with efficiency upgrades intended to help meet rising electricity demand. The investment also shows how a corporate power contract can underpin work on generation assets.
The 20-year agreement gives the Constellation deal a longer horizon than a short-term electricity purchase. Its intended role is to guarantee revenue needed to cover upgrade costs, while Google secures nuclear power for its operations. The announcement does not name the 11 units or detail how much additional output the upgrades are expected to deliver.
Broader power deals leave questions
Google has also been linked to a $25 billion deal with PJM to power AI data centers. The energy source for that arrangement is not specified in the available information, so it cannot be treated as another nuclear commitment. It does underline that Google’s power strategy extends beyond the two nuclear agreements.
The announced plans combine a future supply agreement with investment in existing plants, but they do not establish how much electricity will reach Google’s facilities or when every upgrade will be complete. For now, the clearest milestones are the Kairos supply target of 2030, Constellation’s $4.3 billion investment and the 20-year purchase agreement. Takeaway: Google is using nuclear power contracts and plant upgrades to secure electricity for AI growth, but the scale and delivery of the promised supply remain key questions.
References
- Fox Business — “Google signs nuclear power deal for Alabama, Tennessee data centers”
- axios.com — “Google and Constellation Energy sign latest nuclear energy deal”
- The Verge — “Google’s power-hungry data centers crave nuclear energy”
- Introl Blog — “Nuclear power for AI: inside the data center energy deals”
- linkedin.com — “Google's $25b deal with PJM for AI data centers”
