The U.S. grid is entering a strange phase. In Wyoming, regulators approved the first advanced reactor project in decades. In Washington State, a coal plant slated for closure is suddenly being ordered to keep running — even as environmental groups argue the region has excess power. Meanwhile, the battery market continues to scale at breakneck speed as developers race to stabilize an increasingly volatile system.

Supply constraints defined the past two years. Now the story is more complicated: some places are short on power, others appear to have more than expected.

TerraPower’s Natrium reactor in Kemmerer, Wyoming cleared a major regulatory step this week, marking one of the most significant nuclear milestones in years.

The 345-MW sodium-cooled reactor integrates molten-salt energy storage capable of boosting output to roughly 500 MW during peak demand periods. The plant is expected to come online in the early 2030s and will use high-assay low-enriched uranium (HALEU) fuel — a supply chain the U.S. is now racing to build domestically.

The project will replace the retiring Naughton coal plant and is designed to operate flexibly alongside renewable generation. If the concept works as intended, Natrium would demonstrate something the industry has been chasing for decades: nuclear that behaves less like a rigid steam plant and more like modern grid infrastructure.

Why it matters - For the grid: advanced reactors are one of the few technologies capable of replacing retiring baseload generation without the intermittency challenges of wind and solar.

For investors and operators: the next bottleneck is no longer licensing — it’s fuel supply and project economics.

GridTake - For decades nuclear plants were built to run flat-out while the grid adjusted around them. Natrium flips that assumption by pairing the reactor with thermal storage, allowing output to move with demand. If that model works, nuclear could fit far more comfortably into a grid increasingly shaped by variable generation.

FirstEnergy announced roughly $950 million in new transmission investments across Ohio and Pennsylvania, part of a broader $36 billion grid modernization plan through 2030.

The upgrades include rebuilding aging power lines, replacing transmission equipment, and expanding substations. Much of the work will be executed through Grid Growth Ventures, a joint venture between FirstEnergy and Transource Energy that focuses on regional transmission projects.

The investments are being driven largely by rising electricity demand tied to data centers, electrified heating, and electric vehicles.

Why it matters - For the grid: transmission is increasingly the choke point between generation supply and load growth. And for investors and policymakers: utilities are shifting from generation bets to regulated wire build-outs.

GridTake - If the 2010s were about building wind and solar, the 2020s will be about building wires to move it.

A legal fight is unfolding over the Centralia coal plant in Washington, where environmental groups are suing the Department of Energy over an emergency order requiring the facility to continue operating.

The DOE issued the order under federal emergency authority, allowing the plant’s owner, TransAlta, to temporarily operate the unit beyond scheduled retirement. Officials cited reliability concerns tied to regional supply risks and extreme weather.

But groups like Earthjustice argue the move is unnecessary and politically motivated, claiming the Pacific Northwest currently has sufficient electricity supply and does not need the coal plant to maintain reliability. That claim raises a strange possibility: parts of the Western grid may be momentarily oversupplied, even as other regions warn of capacity shortages.

Why it matters - For the grid: emergency orders reveal how uncertain regional reliability planning has become as generation portfolios shift.

For policymakers: the line between precaution and overreaction is becoming politically contested.

GridTake - The U.S. grid may soon experience the oddest combination imaginable: localized power shortages and localized power gluts at the same time.

Transmission determines which story you get.

The Trump administration unveiled a “ratepayer protection pledge” this week aimed at preventing the electricity demand from AI data centers from raising household utility bills. Under the pledge, companies including Google, Microsoft, Meta, Amazon, Oracle, OpenAI, and xAI agreed to build, buy, or provide the electricity needed to run their facilities rather than relying on ratepayers to fund new power plants and grid upgrades. The agreement is voluntary and largely unenforceable.

The scale of the issue is enormous. Nearly 680 data centers are planned across the U.S., and AI infrastructure could consume 9–17% of U.S. electricity by 2030, up from roughly 4–5% today.

Why it matters - For the grid: AI demand is arriving fast enough that it’s forcing a rethink of who pays for generation, transmission, and reliability upgrades.

For politics: Rising electricity prices tied to data center growth are becoming a real political problem in states hosting large clusters of facilities.

GridTake - The pledge itself is mostly theater. Tech companies are already moving toward securing their own power because they can’t wait for the grid to catch up. Signing the deal simply keeps regulators happy while they build the capacity they need anyway.

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The U.S. battery energy storage market continues its rapid expansion.

Battery storage deployments reached 57 GWh (28 GW) in 2025, a 29% year-over-year increase, driven primarily by large utility-scale installations. Developers are expected to install roughly 70 GWh (35 GW) in 2026, representing more than $25 billion in investment. Utility-scale projects account for most of the growth, with California, Texas, and Arizona representing roughly 74% of installed capacity.

Meanwhile, battery systems are increasingly appearing behind the meter at data centers and industrial facilities, as developers look for ways to operate around grid interconnection delays.

Why it matters
For the grid: storage is no longer a niche reliability tool. It is becoming a structural layer of the power system built to absorb volatility.

For markets: the speed of deployment reveals something important. The generation mix is changing faster than the grid can adapt, and batteries are increasingly being asked to stabilize the difference.

GridTake - Storage is growing quickly, but the growth rate is already slowing as the base gets larger. That suggests batteries are moving from an experimental technology into something closer to standard grid infrastructure.

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