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Battery storage facility at Clearway Energy's Daggett solar-plus-storage project in California's Mojave Desert

The Boom Nobody Told You About

Solar Army · · 14 min read

The Boom Nobody Told You About

Chris Taylor has spent his career in clean energy. Before founding GridStor, the Portland-based battery storage developer backed by Goldman Sachs, he managed over $1.5 billion in clean energy investments for Google’s global data center operations. He has seen a lot of industries move fast.

“I’ve never seen an industry move so fast,” he told S&P Global Market Intelligence in March 2026. “I don’t know if there’s ever been a technology in the history of mankind for energy that’s been deployed at such a massive scale in such a short period of time.”

He’s talking about battery storage. And he’s right. But almost nobody outside the industry knows it.

The Number Nobody Knows

In 2017, the United States had less than one gigawatt of large-scale battery storage capacity. Total. Cumulative. Everything ever built.

By the end of 2025, American utilities and developers had added 17.75 gigawatts in a single year — 52 percent more than the previous record set just twelve months earlier. A new quarterly record was set in Q4 alone: nearly 6 gigawatts in three months.

Cumulative non-hydroelectric storage capacity in the United States now stands at roughly 48 gigawatts. Almost all of it built in the last five years.

Battery storage is now the second-largest source of new American energy capacity, trailing only solar. It has exceeded annual natural gas-fired capacity additions in each of the past two years. It overtook cumulative pumped hydroelectric storage — the technology that held the title for a century — in 2024.

And the pipeline is orders of magnitude larger than what’s been built. Developers have filed plans for nearly 185 gigawatts of new large-scale battery storage through 2030. Thirty-seven gigawatts per year, on average, for the next five years. Texas alone has 74.6 gigawatts in the planning pipeline. California has 34.5 gigawatts more.

The industry set a goal in 2017 to reach 35 gigawatts by 2025. It blew past that target and is now talking about 185 more.

This is not a niche technology story. This is the largest infrastructure buildout in modern American history, happening faster than any energy technology has ever been deployed, and it is almost entirely invisible to the people who will depend on it.

What It Actually Does

Before you can understand why this matters, you need to understand what a battery storage facility actually is — because it is not what most people imagine.

It is not a backup generator. It is not a curiosity. It is not a green energy science project.

It is a shock absorber for the American grid.

Here is the problem the grid has always had: electricity cannot be stored easily, and demand is not constant. At 2am, when everyone is asleep, the grid generates far more power than it needs. At 4pm on a July afternoon in Phoenix, when every air conditioner in the metro area is running simultaneously, the grid struggles to keep up. For most of the grid’s history, the only answer to this mismatch was to build more generation capacity — peaker plants, usually natural gas, that existed solely to run for a few hundred hours a year during demand spikes, and sat idle the rest of the time.

Battery storage replaces that logic. Charge during the cheap, abundant hours. Discharge during the expensive, scarce ones. The grid stops wasting and starts storing.

“Most of my customers care about speed to power more than anything,” said Julian Nebreda, CEO of Fluence Energy, one of the largest battery storage technology integrators in the country. “This technology is going to be all around the grid. It’s going to make the consumption of electricity a lot more efficient.”

Where It’s Happening

The geographic distribution of the boom tells you where the pressure is greatest.

Texas now leads the country with 17.6 gigawatts of battery storage in operation, recently surpassing California’s 15.7 gigawatts. Arizona has 5.1 gigawatts. Nevada, 1.9 gigawatts.

These are the states with the most solar, the most population growth, the most brutal summer peaks. Texas doesn’t have the interconnections to import power from neighboring grids when demand spikes. It has to generate and store within its own borders. Batteries are its answer.

But the boom is spreading beyond the Sun Belt.

In the Pacific Northwest — historically powered by the Columbia River hydroelectric system, one of the most reliable and abundant clean energy sources in the world — something is changing. Data centers are proliferating in Oregon and Washington, drawn by cheap hydro power, cool climates, and fiber infrastructure. And they are consuming that hydro.

“The data centers are locating near those hydro resources, they’re starting to consume that hydro themselves,” said Brett Greene, senior director of commercial initiatives at Portland General Electric, Oregon’s largest investor-owned utility. “The availability of hydro is shrinking, which means we need to offset that with new technology — which is the batteries.”

Oregon now has over 8 gigawatts of battery storage in the planning pipeline. Portland General Electric has 522 megawatts already in operation and recently announced agreements for nearly 1 gigawatt more.

The pattern repeating everywhere: an existing clean energy resource — hydro, wind, solar — meets surging demand from data centers and electrification. The resource hits capacity. Batteries fill the gap.

The Engine Behind the Engine

To understand why this is happening now, specifically — why 2025 and not 2015 or 2035 — you have to understand what is actually driving demand.

It is not climate policy. It is not consumer preference. It is data centers.

The explosion of artificial intelligence, cloud computing, and hyperscale technology infrastructure has created an insatiable appetite for reliable, always-on electrical power. A large data center consumes 100 to 500 megawatts continuously — the equivalent of a small city. And unlike a city, it cannot tolerate interruptions. A millisecond of downtime costs more than most people earn in a year.

These facilities are being built faster than the grid can accommodate them. Utilities that have managed stable or declining demand for decades are suddenly being asked to add gigawatts of firm capacity on timelines measured in months, not years.

Battery storage is the only technology that can be deployed fast enough to answer.

“From now to 2030 is going to be a boom time for our sector,” Taylor said, “because if you have well-positioned assets, you can quickly use those to support data center growth, and I see that as becoming a huge driver.”

The federal government helped. The Inflation Reduction Act’s long-term tax credits for battery storage investment made the economics close across a wide range of markets. An improving global supply chain — driven largely by Chinese manufacturing scale — drove costs down. The combination of policy, economics, and surging demand created the conditions for what Taylor calls an industry he’s never seen move so fast.

The Crack in the Foundation

Here is what the S&P Global report doesn’t say. What the industry press releases don’t say. What almost no one covering this boom is saying clearly:

Every gigawatt of this record-breaking deployment runs on lithium-ion chemistry. And the supply chain for lithium-ion batteries — the lithium, the cobalt, the cell manufacturing — runs predominantly through China.

The boom is real. The growth is real. The infrastructure being built is genuinely transformative. But the foundation it sits on is not domestically sourced, not domestically manufactured at the cell level, and not free from foreign leverage.

The four-hour storage window that defines most of these installations — enough to shift solar generation into the evening peak, enough to smooth a demand spike — is the right answer for today’s grid problem. It is not the answer for a grid emergency that lasts days. It is not the answer for a cyberattack that takes out transmission across a region. It is not the answer for a hurricane that cuts off a coastal city for two weeks.

The boom is building the grid’s shock absorber. What it has not yet built is the grid’s immune system.

That is the next chapter.

And there was a company in Holland, Michigan that was building the chemistry that makes the immune system possible — domestically sourced from American salt, manufactured on American soil, designed for 10,000 cycles and 27 years of service.

It closed in September 2025. Its patents are being sold right now. The buyer is not required to disclose their nationality.

You Are Already Inside This

If you have solar panels on your roof, you are a node in this network. If you have an electric vehicle, you are carrying a battery that can power your house during an outage and feed back to the street when the grid needs it. If your utility has signed battery storage contracts — and in most of the country, it has — the electricity you draw tonight was stored this afternoon.

The army already exists. Five million American households generating on their roofs, millions more driving on sun-charged electrons, 48 gigawatts of grid storage humming in fields from the Mojave to the Texas panhandle to the Oregon coast.

Most of it doesn’t know it’s an army yet.

Solar Army exists to tell it.

Sources

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