Add actual supply
The IEA expects renewables to meet nearly half of global data-center demand growth through 2030. Gas and coal together still meet more than 40%. The near-term answer is a mixed grid, not a clean-energy slogan.
Power investigation 02
Berkeley Lab’s reference case puts U.S. data centers at 11.8% of national electricity use in 2030. The demand is real. The grid is not required to remain exactly the size it was before the application arrived.
Inspect the power planThe short answer
Efficiency and flexible demand can reduce how much must be built. Neither one manufactures electricity.
The IEA expects renewables to meet nearly half of global data-center demand growth through 2030. Gas and coal together still meet more than 40%. The near-term answer is a mixed grid, not a clean-energy slogan.
Power plants do not help a constrained campus without substations and transmission. The IEA says new transmission can take four to eight years in advanced economies.
Separate large-load rates, long contracts, minimum monthly charges, collateral, and exit fees reduce the chance that a canceled campus leaves households paying for dedicated infrastructure.
Training, batch processing, and spare server capacity can sometimes pause or shift. A Phoenix field test cut one 256-GPU cluster’s power 25% for three hours while maintaining the tested service guarantees.
Better chips, networking, cooling, utilization, and software reduce energy per unit of computing. They do not guarantee lower total electricity if demand grows faster than efficiency.
Both numbers belong in the same sentence.
Virginia’s answer
But paperwork can stop the dedicated bill from wandering into somebody else’s mailbox.
Virginia made data centers pay for most of their reserved grid capacity. This confirms the capacity was extremely guilty.
Actual factVirginia’s new rules take effect in 2027 and are designed to reduce cost shifting and stranded-infrastructure risk. They allocate cost. Utilities still have to build or procure enough generation and transmission, and rules differ across states and utility territories.
Two pressure valves
Efficiency changes the energy per task. Flexibility changes when the task runs.
Field demonstration
25% for 3hA peer-reviewed Phoenix test used software orchestration, not new batteries, to reduce a 256-GPU cluster’s demand during peak hours. It does not prove every facility or latency-sensitive workload can do the same.
Manufacturer benchmark
Up to 30×NVIDIA reports that Vera Rubin NVL72 delivered up to 30 times the throughput per megawatt of GB300 NVL72 on selected agentic coding trajectories. It is an NVIDIA measurement of a specific workload, pending the named third-party review, not a promise of 30 times lower facility electricity.
A real build
The original Louisiana plan added 2,262 megawatts of gas generation plus transmission. That is new supply. It is also new fossil infrastructure.
Meta’s July 2026 expansion announcement says the broader 5-gigawatt project will fund seven gas-fueled generating plants, three grid batteries, nuclear uprates, and purchased power. That is the proponent’s answer in concrete form: finance incremental supply and grid work, then put the terms through utility regulation. Whether the resulting mix is affordable, reliable, and clean enough remains a legitimate public argument.
The other side of town
The fiscal upside can be enormous. It can also be temporary, uneven, subsidized, or badly negotiated.
Loudoun County, Virginia
38%County records say data centers occupied about 4% of commercial parcels while supplying 38% of general-fund revenue. The county used the revenue to support schools and services, lower tax rates, and fully fund a $119.7 million stabilization reserve for data-center revenue swings.
Richland Parish, Louisiana
$50,935Many experienced certified school employees received the full payment, while classified staff received $17,472. The district tied the unusually large checks to construction-driven sales-tax growth and expects elevated bonuses during Hyperion’s buildout.
Public schools have begun accepting suspicious money from buildings.
Actual factThe Richland payout is a construction-era windfall, not a guaranteed permanent benefit. Loudoun is a mature, unusually dense market. Neither example proves that every project produces a good net deal after tax incentives, infrastructure, land, noise, water, or power costs.
Source records