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Ambrosia Energy starts a 10 GWh Texas battery factory to back $100 per MWh data center power

Ambrosia Energy has begun work on a 150,000-square-foot, 10 GWh battery factory near Austin to supply its solar plants for data centers. CEO Ben Longmier says the company can stay profitable selling continuous power at $100 per megawatt-hour.

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Illustration accompanying Ambrosia Energy starts a 10 GWh Texas battery factory to back $100 per MWh data center power
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First plant targets far more power than its pilot Planned continuous output of the West Texas plant beside the pilot's round-the-clock output, and the downtime the plant's uptime goal allows.

Key figures: Ambrosia's planned West Texas plant is designed to deliver 30 MW of continuous power; its pilot can generate 200 kW around the clock; the plant's 99.3% uptime goal leaves room for about 61 hours a year without power.

First plant targets far more power than its pilot
FigureValueNoteClaim
Continuous power, West Texas plant (planned)30 MW5
Pilot, around the clock200 kW6
Downtime at 99.3% goal61 hrs/yr, about9

What happened

  • Longmier said Ambrosia plans to reach full production at the factory in two to three years.
  • Ambrosia is also starting work on its first commercial plant, in West Texas, later this year, Longmier said.
  • That plant pairs 300 MW of solar panels with 660 MWh of batteries to deliver 30 MW of continuous power, with a 99.3% uptime goal.
  • Sections of the company's pilot plant have run continuously for more than 100 days, and the pilot can produce 200 kW around the clock.
  • Ambrosia does not make battery cells; it buys them and assembles its own packs in-house.

Why it matters

  • Who has to decide decision A buyer weighing Ambrosia against gas turbines is being asked to sign against targets, with a 200 kW pilot as the only operating record the reports describe.
  • Who's exposed exposure The 99.3% uptime goal leaves room for about 61 hours a year without power, and a data center operator would have to plan for those hours.
  • What it limits constraint The $100 price and the pack costs are the company's own assessment, and the West Texas plant is the first place a buyer could test them.

Take a developer who needs 30 MW running around the clock for a data hall. Ambrosia's first commercial plant is designed for that load, and delivering it takes 300 MW of panels, a ratio of 10 to 1 [7]. The 660 MWh of batteries hold 22 hours of the plant's rated output on paper [8].

The factory figures depend on how a plant is counted. "That allows us to build about a 300 megawatt power plant per year out at our field sites," Longmier said of the factory [12]. The reports do not say whether that 300 MW is panel rating, as in the West Texas design, or delivered power, or whether the factory's 10 GWh is a yearly figure. If it is yearly and 300 MW means panels, a year of plants needs 660 MWh, or 6.6% of the factory [19]. If 300 MW means delivered power at the West Texas ratio, the batteries come to 6,600 MWh, or 66% [20].

What Ambrosia has built so far is a pilot, and the West Texas plant's continuous output would be 150 times the pilot's [10].

The price is the company's own assessment, as Interesting Engineering puts it [15]. Longmier said Ambrosia can remain profitable at $100 per MWh despite the extra panels and batteries [13], and the company aims to compete with the gas turbines that many hyperscalers plan to use [14]. To hit that price, Ambrosia has simplified its components, including solar mounts and battery packs [18]. "We've been able to get to about 1.3x the cost of the bare cell compared to about a 5- or 7x for most stationary storage systems," Longmier said [16]. A plant that delivered 30 MW in every hour of a year would sell 262,800 MWh, or $26.3 million at $100 [11].

We would treat the West Texas plant as the unit to evaluate and the factory as a statement of intent. The tradeoff is time: that plant has no uptime record yet, and a buyer who signs before it has one commits without any measured uptime to go on.

Any storage-backed power offer can be run through two questions: whether the quoted megawatts are delivered or panel rating, and whether the design has run at the size being sold or only as a smaller pilot. Delivered and run at size: plan around the figure. Delivered but pilot only: sign a small block with milestones. Panel rating and run at size: convert to delivered megawatts before comparing. Panel rating and pilot only: treat it as a roadmap.

West Texas sits in the second cell. The 300 MW a year cannot be placed on the first question until Ambrosia says which megawatts it means.

What to watch

  • Whether Ambrosia says if its 300 MW a year counts panel rating or delivered power, and whether the 10 GWh is a yearly figure.
  • The West Texas plant's measured uptime once it runs, against the 99.3% goal.
  • A named customer contract at or near $100 per MWh. That would put the company's price in front of an outside buyer.

Clarity's read

What the record supports and how the coverage leans. The claims behind it follow.

Reality

Evidence30
Adoption8
Hype gap+45
Incentives
Not scored
Confidence55

Perspective Coverage

3 publishers
Builder
Builder 42%
Operator
Operator 25%
Investor
Investor 33%
Why these scores

Claim ledger

Ranked by verification strength, evidence, and original report placement.

  1. [1]

    Ambrosia Energy has begun work on a 10 GWh battery factory near Austin, Texas, which co-founder and CEO Ben Longmier announced on stage Tuesday at TechCrunch Disrupt in San Francisco.

    Reported Supported Source: TechCrunchView cited source
  2. [2]

    The 150,000-square-foot facility is designed for 10 gigawatt-hours of battery production and will supply Ambrosia's planned network of solar-powered plants for data centers.

    Reported Supported Source: Interesting EngineeringView cited source
  3. [3]

    Longmier said Ambrosia plans to reach full production at the factory in two to three years.

    Reported Supported Source: TechCrunch, citing Ben LongmierView cited source
  4. [4]

    Ambrosia is beginning work on its first commercial power plant in West Texas later this year, Longmier said.

    Reported Supported Source: TechCrunch, citing Ben LongmierView cited source
  5. [5]

    The first commercial plant will pair 300 MW of solar panels with 660 MWh of battery storage to deliver 30 MW of continuous power, with a goal of 99.3% uptime.

    Reported Supported Source: TechCrunch, citing Ben LongmierView cited source
  6. [6]

    Sections of Ambrosia's first pilot-scale power plant have operated continuously for more than 100 days, Longmier said, and the pilot can generate 200 kilowatts of electricity around the clock.

    Reported Supported Source: TechCrunch, citing Ben LongmierView cited source
  7. [7]

    The West Texas plant uses 10 MW of solar panels for every 1 MW of continuous power it is designed to deliver.

    Derived Supported
  8. [8]

    The plant's 660 MWh of batteries equal 22 hours of its 30 MW continuous output.

    Derived Supported
  9. [9]

    A 99.3% uptime goal leaves room for about 61 hours a year without power.

    Derived Supported
  10. [10]

    The West Texas plant's continuous output is designed to be 150 times the pilot's.

    Derived Supported
  11. [11]

    A plant delivering 30 MW in every hour of a year would sell 262,800 MWh, worth about $26.3 million at $100 per MWh.

    Derived Supported
  12. [12]

    "That allows us to build about a 300 megawatt power plant per year out at our field sites," Longmier said.

    Reported Insufficient Source: Ben Longmier, Ambrosia co-founder and CEOView cited source
  13. [13]

    Longmier said Ambrosia can remain profitable at $100 per megawatt-hour despite the additional solar panels and batteries needed to maintain supply beyond daylight hours.

    Reported Insufficient Source: Interesting Engineering, citing Ben LongmierView cited source
  14. [14]

    At $100 per megawatt-hour, the company aims to compete with natural gas turbines, which many hyperscalers are planning to use to supply their data centers.

    Reported Insufficient Source: Interesting EngineeringView cited source
  15. [15]

    The cost claim remains the company's assessment, alongside its stated targets for commercial output and uptime.

    Reported Insufficient Source: Interesting EngineeringView cited source
  16. [16]

    "We've been able to get to about 1.3x the cost of the bare cell compared to about a 5- or 7x for most stationary storage systems," Longmier said.

    Reported Insufficient Source: Ben Longmier, Ambrosia co-founder and CEOView cited source
  17. [17]

    Ambrosia buys battery cells and assembles its own packs in-house instead of manufacturing the cells.

    Reported Insufficient Source: Interesting EngineeringView cited source
  18. [18]

    To hit its cost targets, Ambrosia has been simplifying its components, including solar mounts and battery packs.

    Reported Insufficient Source: TechCrunchView cited source
  19. [19]

    If the 10 GWh is annual and 300 MW a year means panel rating, a year of plants needs 660 MWh of batteries, 6.6% of the factory's 10 GWh.

    Derived Insufficient
  20. [20]

    If 300 MW a year means delivered power at the West Texas ratio, a year of plants needs 6,600 MWh of batteries, 66% of a 10 GWh factory.

    Derived Insufficient

Sources

2 independent publishers whose own reporting we read for this story.

  1. interestingengineering.com

    1 article · October 15, 2026

    US startup pairs 300 MW solar panels with battery storage for continuous data center power
  2. mezha.net

    1 article · October 15, 2026

    Ambrosia Energy почала будувати в Техасі акумуляторний завод на 10 ГВт·год
  3. techcrunch.com

    1 article · October 14, 2026

    Ambrosia Energy will build a 10 GWh factory in Texas to make batteries for off-grid data centers

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