Exowatt
Exowatt builds the P3, a modular thermal energy storage system that captures solar energy, stores it as high-temperature heat, and dispatches electricity on demand for hyperscale AI data centers and utilities across the U.S.
- Company typePrivate
- Founded2023
- HeadquartersMiami, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Exowatt does
Exowatt is a Miami-based energy technology company founded in 2023 by Hannan Happi and Jack Abraham that develops modular thermal energy storage systems targeting AI data centers and U.S. utilities. Its flagship product, the Exowatt P3, captures solar energy through proprietary Fresnel lenses, stores it as high-temperature heat (up to 1,000°C) in a sensible-heat thermal battery built from abundant materials such as sand and slag, and converts the stored heat to dispatchable electricity on demand via a proprietary Stirling-engine-based heat engine. Each P3 module fits within a 40-foot shipping container footprint, delivers 150 kWh of storage, and provides up to 24 hours of dispatchable output at a current electricity generation cost of just under $0.04/kWh, with a stated target of $0.01/kWh at approximately one million units produced per year.
The company monetizes through two streams: direct hardware sales of the P3 system to enterprise customers, and ExoRise, a turnkey powered-land business arm launched in January 2026 that bundles land acquisition, P3-based generation, and modular data center shells for hyperscale operators in the U.S. Southwest. Exowatt uses an enterprise field-sales motion, including a dedicated Chief Data Center Officer and a "Reserve Now" intake, supplemented by channel partnerships (PowerSecure, DG Matrix) and digital-twin collaboration with NVIDIA and AWS for monitoring and optimization. As of mid-2026 the company has raised $140 million across seed, Series A, and Series A extension rounds from investors including a16z, Atomic, Sam Altman, Felicis, MVP Ventures, 8090 Industries, HSBC Innovation Banking, Starwood Capital, and others, and operates from Miami headquarters and a new Austin, Texas manufacturing and engineering campus.
Exowatt firmographics
Firmographics- Name
- Exowatt
- Legal name
- Exowatt, Inc.
- Website
- https://exowatt.com
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Exowatt builds the P3, a modular thermal energy storage system that captures solar energy, stores it as high-temperature heat, and dispatches electricity on demand for hyperscale AI data centers and utilities across the U.S.
- Ownership category
- akta.pro rank
Exowatt industry classification
Industry- Product category
- Dispatchable Solar Energy Systems / Long-Duration Thermal Energy Storage
- NAICS
- Power Boiler and Heat Exchanger Manufacturing (33241)
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600), Heating Equipment, Except Electric & Warm Air Furnaces (3433)
- akta.pro primary industry
- Solar Thermal & CSP Systems (Collectors, Receivers, Thermal Storage, CSP EPC) (EUAMABAL)
- akta.pro secondary industries
- High-Temperature Solid Media Storage (Bricks, Concrete, Ceramic) (EUAFANAF), Battery Containerization, Enclosures & HVAC / Thermal Management Integration (EUAEAEAH)
Keywords
Where Exowatt is headquartered
LocationHeadquarters
- HQ city
- Miami
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Exowatt business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales
Revenue model
- Exowatt P3 Modular Energy Systems: Sale of modular dispatchable solar energy systems (P3) to data centers and industrial customers. Revenue generated from system sales, deployment, and ongoing maintenance services. Customer reserves systems through 'Reserve Now' contact process.
- ExoRise Powered Land Solutions: Turnkey powered land and energy infrastructure business combining land development with P3 technology deployment for hyperscale data centers. Provides complete data center power infrastructure solutions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Exowatt P3 modular energy system pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Exowatt product offering
Product offeringCore offering
Exowatt designs, manufactures, and deploys the Exowatt P3, a modular dispatchable solar energy system that captures sunlight via proprietary Fresnel lenses, stores the energy as high-temperature heat (up to 1,000°C) in a proprietary sensible-heat thermal battery using abundant materials such as sand and slag, and converts that heat to electricity on demand using a Stirling-engine-based heat engine — all packaged in a 40-foot shipping container module. Through its ExoRise arm, Exowatt also delivers turnkey powered-land and energy-infrastructure packages that pair P3 generation with land and modular data center shell for hyperscale operators, primarily in the U.S. Southwest.
Product overview
Exowatt offers a two-product portfolio anchored by its flagship modular dispatchable solar platform, the Exowatt P3, which captures solar energy as heat, stores it in a long-duration thermal battery, and converts it to electricity on demand. The P3 modules scale linearly and are designed for co-location at or near energy-intensive loads such as AI data centers, serving both behind-the-meter and off-grid deployments. Complementing the P3 is ExoRise, a turnkey powered-land and energy infrastructure sub-brand that packages land acquisition, P3-based power generation, and modular data center shell construction into a single offering for hyperscale operators—enabling gigawatt-scale AI infrastructure deployment without reliance on constrained grid interconnections.
Differentiator
Problem solved
Functional benefit
Brands
- ExoRise: A business arm of Exowatt that delivers turnkey powered land and energy infrastructure for hyperscale data centers, combining land development with P3 technology for deployment in U.S. Southwest regions including New Mexico, West Texas, Arizona, and Nevada.
Products and services
- Exowatt P3 Modular dispatchable solar energy system that captures solar energy via proprietary Fresnel lenses, stores it as high-temperature heat in a proprietary sensible thermal battery (using abundant materials like sand and slag), and converts it to electricity on demand via a Stirling-engine-based heat engine. Provides up to 24 hours of dispatchable power, fits within a 40-foot shipping container footprint, and supports behind-the-meter and off-grid deployment.
- ExoRise Powered Land Solutions Turnkey powered-land and energy-infrastructure business arm that bundles land acquisition, Exowatt P3 dispatchable solar generation, and modular data center shell construction into a single offering for hyperscale operators. Targets gigawatt-scale AI infrastructure in the U.S. Southwest (New Mexico, West Texas, Arizona, Nevada), enabling behind-the-meter and off-grid deployment independent of constrained grid interconnections.
Quantifiable outcome
- Reduces energy expenses by up to $35 million for average data center project
- +3 more outcomes
Companies that use Exowatt
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles3 records
Exowatt technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability1 record
Feature5 records
Exowatt partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- DG MatrixcoreStrategic partnership to integrate DG Matrix's Interport solid-state transformer technology into Exowatt's modular P3 and ExoRise platforms. Enables behind-the-meter power routing at gigawatt scale, bypassing traditional grid interconnection queues. Partnership designed for repeatable, modular deployments scaling from individual sites to multi-gigawatt portfolios.
- NVIDIAcoreCollaboration partner for Digital Twin platform development. NVIDIA technology enables real-time digital twin capabilities for Exowatt P3 systems.
- PowerSecure (Southern Company subsidiary)coreStrategic partnership with PowerSecure for deployment of next-generation power infrastructure for AI data centers. Multiple gigawatt-class data centers in pipeline.
- AWS (Amazon Web Services)coreCollaboration partner for Digital Twin platform. AWS cloud infrastructure supports system monitoring and optimization.
Scale indicators9 records
Recent moves9 records
Expansion highlights6 records
Exowatt competitors and assessment
Company assessmentDirect peers
- Antora Energy: Thermal energy storage and thermophotovoltaic (TPV) cell company providing dispatchable clean heat and power to industrial customers. Comparable in using thermal storage for dispatchable industrial power with a focus on decarbonization.
- Malta Inc. Pumped heat energy storage company using heat pumps and heat engines with thermal storage for long-duration grid storage. Closely aligned with Exowatt's heat-pump/Stirling-cycle architecture and grid-scale dispatchable energy market.
- Rondo Energy: Industrial heat battery company using solid-media thermal storage to deliver high-temperature process heat. Comparable technology approach (sensible heat storage with abundant materials) and similar target customers in industrial decarbonization.
- Heliogen: Concentrated solar power company using AI-aligned heliostats to generate high-temperature heat and dispatchable renewable energy. Directly comparable to Exowatt's Fresnel-lens solar collection and high-temperature thermal storage approach, targeting industrial and power customers.
- Brenmiller Energy: Thermal energy storage (bTES) company providing heat storage solutions for industrial and power applications. Similar modular thermal storage offering, publicly traded, and competing in the dispatchable clean heat/power market.
Broad incumbents
- Bloom Energy: Solid oxide fuel cell company providing on-site 24/7 clean power to data centers and industrial customers. Targets the same data center behind-the-meter power market with established commercial deployments at hyperscalers like Equinix and AEP.
Emerging players
- Energy Dome: CO2 battery company providing long-duration energy storage using thermodynamic compression and expansion. Comparable market (long-duration storage for grid and renewables) with different but emerging technology.
- 1414 Degrees: Molten salt thermal energy storage company (TESS/GIFR technologies) targeting dispatchable renewable power. Comparable approach using high-temperature thermal storage for grid and industrial applications, publicly listed in Australia.
- Highview Power: Liquid air energy storage (LAES) company providing long-duration grid-scale storage. Competes in long-duration energy storage but with cryogenic rather than thermal storage technology.
- Form Energy: Iron-air long-duration battery company targeting 100-hour grid storage at low cost. Competes for the same long-duration energy storage use case but with electrochemical rather than thermal technology.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Exowatt social profiles
Digital presenceExowatt financial estimates
Financial estimateRevenue estimate
Valuation estimate
Exowatt leadership team
Management profileNumber of profiles
Profiles8 records
Exowatt subsidiaries and ownership
Company hierarchySubsidiaries1 record
Exowatt funding detail
Funding detailFunding overview
Funding rounds5 records
Investors24 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Exowatt M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Exowatt
What does Exowatt do?
Exowatt designs, manufactures, and deploys the Exowatt P3, a modular dispatchable solar energy system that captures sunlight via proprietary Fresnel lenses, stores the energy as high-temperature heat (up to 1,000°C) in a proprietary sensible-heat thermal battery using abundant materials such as sand and slag, and converts that heat to electricity on demand using a Stirling-engine-based heat engine — all packaged in a 40-foot shipping container module. Through its ExoRise arm, Exowatt also delivers turnkey powered-land and energy-infrastructure packages that pair P3 generation with land and modular data center shell for hyperscale operators, primarily in the U.S. Southwest.
Is Exowatt a public or private company?
Exowatt is a private company. It is classified as venture growth investor backed and is currently operating.
When was Exowatt founded?
Exowatt was founded in 2023. It employs 51 to 100 people.
Where is Exowatt based?
Exowatt is headquartered in Miami, United States, in the North America region.
How does Exowatt make money?
Two revenue lines are on record. Exowatt P3 Modular Energy Systems are the primary driver. The others are exoRise Powered Land Solutions.
Who are Exowatt's main competitors?
Direct peers on record are Antora Energy, Malta Inc., Rondo Energy, Heliogen and Brenmiller Energy. Bloom Energy is listed as a broad incumbent. Emerging players are Energy Dome, 1414 Degrees, Highview Power and Form Energy.
Does Exowatt have an API?
No public API is recorded for Exowatt.
What industry is Exowatt in?
Exowatt's product category is Dispatchable Solar Energy Systems / Long-Duration Thermal Energy Storage. Its primary akta.pro industry code is EUAMABAL, Solar Thermal & CSP Systems (Collectors, Receivers, Thermal Storage, CSP EPC), with a secondary code of EUAFANAF, High-Temperature Solid Media Storage (Bricks, Concrete, Ceramic). Its NAICS code is 33241 and its SIC code is 3600.