EarthEn
EarthEn builds supercritical CO2-based long-duration energy storage systems, including grid-scale Pods and industrial Heat Batteries, serving utilities, renewable developers, and process industries with 4-100+ hour discharge capabilities.
- Company typePrivate
- Founded2021
- HeadquartersPhoenix, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What EarthEn does
EarthEn is a Phoenix, Arizona-based clean energy hardware company founded in 2021 that develops supercritical CO2 (sCO2) thermomechanical energy storage systems for long-duration grid and industrial heat applications. Its core technology operates on a pumped-heat/pumped-thermal electricity storage architecture that charges by compressing and heating CO2 into a supercritical state and discharges via a turbine-generator, avoiding the use of lithium, rare earths, or other constrained supply-chain inputs. The company markets two product lines: EarthEn Pods, modular grid-scale storage delivering 4 to 100+ hours of discharge, and the Heat Battery, a 200–500°C industrial thermal storage unit offering 4–12 hours of discharge at roughly 90% round-trip efficiency, targeted at process industries such as cement, steel, chemicals, and food processing.
The company's go-to-market centers on commercial pilots and large industrial customers rather than residential deployment; its first announced commercial pilot is with Brisa Energy in Utah for 2026, supported by Utah's Office of Energy Development. Revenue mechanics are anchored on long-duration storage and thermal storage hardware sales plus associated service contracts, with a stated 30-year operational life per unit creating an annuity-like after-sales economics. EarthEn pursues grant co-funding (DOE HPC4EI, NSF SBIR) and accelerator partnerships (Plug and Play, Rice Alliance, Innovation Crossroads at ORNL, Momentum Capital) to defray capital costs while building commercial traction. Customer segments explicitly targeted include utilities, renewable developers, industrial heat users, and increasingly AI/data-center operators whose load growth is driving new long-duration storage demand.
EarthEn firmographics
Firmographics- Name
- EarthEn
- Legal name
- EarthEn Energy
- Website
- https://earthen.energy
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- EarthEn builds supercritical CO2-based long-duration energy storage systems, including grid-scale Pods and industrial Heat Batteries, serving utilities, renewable developers, and process industries with 4-100+ hour discharge capabilities.
- Ownership category
- akta.pro rank
EarthEn industry classification
Industry- Product category
- Long-Duration Energy Storage
- NAICS
- Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Power Boiler and Heat Exchanger Manufacturing (33241)
- SIC
- Industrial Process Furnaces & Ovens (3567), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)
- akta.pro primary industry
- Underground & Geothermal Thermal Storage (ATES/BTES/CTES, Borehole Fields) (EUAFANAG)
- akta.pro secondary industries
- Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI), SCADA/Telemetry, Data Integration & Device Connectivity for Storage/DER Control (EUAFAKAI)
Keywords
Where EarthEn is headquartered
LocationHeadquarters
- HQ city
- Phoenix
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
EarthEn business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales
Revenue model
- EarthEn Pods (Energy Storage Systems): Sale of sCO2-based pumped heat energy storage systems for grid-scale applications. Systems sold to utilities, grid operators, and large energy consumers requiring long-duration storage (4-100+ hours) with 30+ year operational life.
- Heat Battery Systems: Sale of containerized, modular heat battery units delivering industrial-grade heat (200-500°C) for decarbonization of hard-to-abate industries including food, pharmaceuticals, textiles, and pulp & paper.
- Pilot and Demonstration Programs: Commercial pilots launching in 2025 including heat battery demo in Utah, establishing proof points for future commercial deployments.
- Grant Funding (Non-dilutive): DOE and NSF grants supporting R&D and technology development. Includes Innovation Crossroads ($400K), NSF STTR, DOE HPC4EI, Office of Electricity support, CalSEED, and various matching funds.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | EarthEn Pods - Grid-scale energy storage systems |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels8 records
EarthEn product offering
Product offeringCore offering
EarthEn develops and sells sCO2-based pumped-heat thermo-mechanical energy storage systems for grid-scale long-duration storage (4-100+ hours) and industrial heat decarbonization (200-500°C). The company offers two main product lines: EarthEn Pods for grid operators and utilities, and Heat Battery units for hard-to-abate industrial sectors including food, pharmaceuticals, textiles, and pulp & paper.
Product overview
EarthEn offers two main product lines: EarthEn Pods (sCO2 Pumped Heat Energy Storage for grid-scale long-duration energy storage from 4-100+ hours) and the Heat Battery (industrial-grade thermal energy storage delivering 200-500°C heat for decarbonization of hard-to-abate industries). Both products use supercritical CO2 in closed-loop thermo-mechanical systems, share common technology foundations for safety and scalability, and can operate independently or together to provide flexible storage and industrial heat solutions.
Differentiator
Problem solved
Functional benefit
Brands
- EarthEn Pods: sCO2-based pumped heat energy storage solution for 4-100+ hours of flexible energy storage with 30-year operational life
- EarthEn Heat Battery
Products and services
- EarthEn Pods sCO2 Pumped Heat Energy Storage system that uses CO2 in a closed loop to store 4-100+ hours of energy at low cost in a highly scalable and safe manner with a 30-year operational life. Features independent scaling of power and energy with MW-scale building blocks. Designed for grid operators, utilities, and large energy consumers requiring long-duration storage.
- EarthEn Heat Battery
Quantifiable outcome
- Storage duration: 4-100+ hours of energy
- +4 more outcomes
Companies that use EarthEn
Customer profileSegments4 records
Ideal customer profiles3 records
EarthEn technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability2 records
Feature5 records
EarthEn partnerships and signals
Strategic signalPartnerships
18 partnerships are on record, tiered major, minor and core.
- Woodside Energy / Equinor Ecosystem ExchangemajorPart of Ecosystem Exchange hosting Australian and Norwegian startups to cross-pollinate with Houston energy ecosystem. Lightning pitches with Woodside Energy and Equinor teams, participation in Houston Energy and Climate Startup Week.
- EPRI IncubatenergymajorFounder Manas Pathak speaking at EPRI's Incubatenergy program sharing insights on patented sCO2-based LDES technology and heat battery solutions for future grid.
- EnergyTech Nexus / COPILOT Pilotathonmajor2025 COPILOT Accelerator participant and Charter Member of EnergyTech Nexus. Pitched and showcased technology at Pilotathon in Houston.
- COPILOT Accelerator / EnergyTech NexusmajorSelected for inaugural COPILOT Accelerator by EnergyTech Nexus in partnership with Browning the Green Space and supported by Wells Fargo Innovation Incubator (IN2) at NREL. 8-month program with mentorship, pilot matchmaking, and showcase opportunities.
- India Energy Storage Week (IESW) 2025majorExhibitor Partner at IESW 2025 in New Delhi, India's leading platform for energy storage, e-mobility, green hydrogen, and clean energy innovation. Showcasing innovation and connecting with global leaders.
- IACMI - The Composites InstituteminorPresented at IACMI Innovation Insights webinar showcasing innovative energy storage solutions and engaging with leaders in advanced manufacturing and clean technology.
- LDES Symposium by NSF EnginesmajorPresented at LDES Symposium by NSF Engines: Southwest Sustainability Innovation Engine showcasing CO2-based energy storage solutions and connecting with global leaders for sustainable net-zero future.
- NSF SWSIE (Southwest Sustainability Innovation Engine)majorParticipated in NSF Engines panel discussing energy challenges in the Southwest. Part of SWSIE ecosystem focused on seeding sustainable economy in the Southwest.
- AccelerateAZ Arizona Sustainability CohortmajorAccepted into accelerateAZ program as part of Arizona Sustainability Batch 2 for driving innovation in renewable energy.
- India Energy Storage Alliance (IESA)coreBronze membership renewal with IESA highlighting dedication to advancing energy storage technologies and commitment to industry collaboration in India.
- Greentown LabscoreShowcased CO2-based energy storage solutions at Greentown Labs Climate Tech Summit. Active member participating in Ecosystem Exchange programs, pitch events, and Houston Energy and Climate Startup Week.
- Oak Ridge National Laboratory (ORNL)coreInnovation Crossroads program at ORNL. CEO Manas Pathak selected as one of seven entrepreneurs in cohort 7. EarthEn receives DOE funding and support for collaborative R&D at ORNL's Knoxville, TN campus. Partnership with DOE and TVA.
- Black & Veatch IgniteX 2023majorSelected for Black & Veatch's IgniteX 2023 Climate Tech Accelerator Program. Looking forward to scaling partnership and collaborating on all offerings.
- Joules AcceleratormajorPart of Joules Accelerator working with partners like Duke Energy, Honeywell and others. Growing presence across Southeast region.
- Rice Alliance / Rice Clean Energy AcceleratorcoreWorking with Rice Alliance through Clean Energy Accelerator Cohort 3. Part of greater Houston community for clean energy transition. Future announcements expected for customer deployments and investment partnerships with Houston's largest players.
- QBE Leading Cities ProgramminorLearning about working with various cities, governments and regulatory bodies to help decarbonize cities worldwide.
- Plug and Play Tech CentermajorPart of Plug and Play ecosystem. Shared vision with Plug & Play Energy in decarbonizing all commercial and industrial operations. Joined Sustainability Cohort at AccelerateAZ program in partnership with Arizona Commerce Authority.
- IMPEL (DOE-funded)coreSelected for DOE-funded IMPEL program (Buildings Technologies Office). Looking forward to deploying systems across various buildings and factories within the DOE ecosystem.
Scale indicators14 records
Recent moves6 records
Expansion highlights5 records
EarthEn competitors and assessment
Company assessmentDirect peers
- Malta Inc. Malta develops pumped-heat energy storage using a similar thermodynamic approach to EarthEn's sCO2-based Pods, storing electricity as heat in molten salt and cold in anti-freeze. Both target grid-scale long-duration storage (8-200+ hours) and compete in the same utility/grid operator RFP market.
- Energy Dome: Energy Dome's CO2 Battery uses CO2 in a closed thermodynamic cycle for long-duration energy storage, making it the closest direct competitor to EarthEn's CO2-based Pods technology. Both serve utility-scale storage with comparable duration targets.
- Rondo Energy: Rondo Energy produces industrial heat batteries delivering high-temperature process heat to manufacturers, directly competing with EarthEn's Heat Battery product for industrial decarbonization in food, chemicals, and manufacturing sectors.
- Antora Energy: Antora Energy builds thermal energy storage and conversion systems using carbon blocks for industrial decarbonization and grid storage. Targets the same industrial heat and utility-scale LDES customers as EarthEn.
- Form Energy: Form Energy develops iron-air batteries for 100+ hour grid-scale storage, competing directly with EarthEn Pods in the utility long-duration storage market. Both target the same grid operators seeking multi-day storage at low LCOS.
- Highview Power: Highview Power develops liquid air energy storage (LAES) for grid-scale long-duration applications. Targets the same utility-scale LDES RFP market as EarthEn with 4+ hour duration capabilities.
- Brenmiller Energy: Brenmiller Energy provides thermal energy storage systems (bCRUSHER, bGen) for industrial process heat decarbonization. Directly competes with EarthEn's Heat Battery in food, chemical, and industrial heat markets.
Emerging players
- Kraftblock: Kraftblock offers modular thermal storage using recycled steel slag for industrial heat decarbonization. Competes with EarthEn's Heat Battery for industrial process heat applications with similar modular, containerized delivery.
Broad incumbents
- Siemens Energy (EES): Siemens Energy offers broad energy storage solutions including thermal and mechanical storage as part of a wider generation portfolio. Competes with EarthEn at grid scale through established utility relationships and EPC capability.
- GE Vernova: GE Vernova provides gas turbine and grid-scale energy solutions including thermal storage integrations. As a major incumbent in power generation equipment, it represents the established competitive backdrop for emerging LDES players.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
EarthEn social profiles
Digital presenceEarthEn financial estimates
Financial estimateRevenue estimate
Valuation estimate
EarthEn leadership team
Management profileNumber of profiles
Profiles3 records
EarthEn funding detail
Funding detailFunding overview
Funding rounds6 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
EarthEn 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 EarthEn
What does EarthEn do?
EarthEn develops and sells sCO2-based pumped-heat thermo-mechanical energy storage systems for grid-scale long-duration storage (4-100+ hours) and industrial heat decarbonization (200-500°C). The company offers two main product lines: EarthEn Pods for grid operators and utilities, and Heat Battery units for hard-to-abate industrial sectors including food, pharmaceuticals, textiles, and pulp & paper.
Is EarthEn a public or private company?
EarthEn is a private company. It is classified as venture growth investor backed and is currently operating.
When was EarthEn founded?
EarthEn was founded in 2021. It employs 1 to 10 people.
Where is EarthEn based?
EarthEn is headquartered in Phoenix, United States, in the North America region.
How does EarthEn make money?
Four revenue lines are on record. EarthEn Pods (Energy Storage Systems) is the primary driver. The others are heat Battery Systems, pilot and Demonstration Programs and grant Funding (Non-dilutive).
Who are EarthEn's main competitors?
Direct peers on record are Malta Inc., Energy Dome, Rondo Energy, Antora Energy, Form Energy, Highview Power and Brenmiller Energy. Kraftblock is listed as an emerging player. Broad incumbents are Siemens Energy (EES) and GE Vernova.
Does EarthEn have an API?
No public API is recorded for EarthEn.
What industry is EarthEn in?
EarthEn's product category is Long-Duration Energy Storage. Its primary akta.pro industry code is EUAFANAG, Underground & Geothermal Thermal Storage (ATES/BTES/CTES, Borehole Fields), with a secondary code of EUABAJAI, Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP). Its NAICS code is 333415 and its SIC code is 3567.