EARTHEN INC.
Packed-bed thermal energy storage system using supercritical CO2 for grid-scale renewable energy storage
- Sector
- Energy
- Headquarters
- CHANDLER, AZ
- Founded
- 2021
- Latest Form D
- $11K, Jan 2023
- Total capital
- $285K
- Federal grants
- $275K
- 1 award · 2024
- Rank in peer group#5 of 32
- Private capital raised
- $11K
- 1 Form D · last Jan 2023
- 45 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- None on recordNo USPTO grants. Applications publish after 18 months.
Capital timeline
Latest events
- Federal grantNSF · Phase I · STTR Phase I: Packed Bed Thermal Energy Storage (PBTES) in sCO2-based thermo-mechanical energy storage for short and long durations$275K
- Private capital raisedForm D · SEC · 1st filing$11K
Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.
Standing among 32 peers
Line = medianEnergy · System
- Federal grants#5 · top 16%
Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.
Founders and team
From SEC Form D filings- Manas PathakExecutive Officer, Director, PromoterNamed in SEC Form D filings
What it has protected
No granted patents are on record.
USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.
Checked: USPTO granted patents and published applications · Oct 23, 2026
Related companies, and why
- JAQ Energy LLCSimilar federal contract value in Energy · null in contracts
- TERRA WATTS INC.Similar federal contract value in Energy · null in contracts
- Greenko EnergySimilar federal contract value in Energy · null in contracts
- Stratocom Solutions Corp.Similar federal contract value in Energy · null in contracts
- ENCOORD INCSimilar federal contract value in Energy · null in contracts
- HEAT2POWER INC.Similar federal contract value in Energy · null in contracts
Regulatory activity · Energy
- Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
- List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16Nuclear Regulatory Commission
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.
Sources
Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.
How to read this page
Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.
Data freshness
SEC Form D filings through . SBIR and STTR awards through .