Nimbus Power Systems
Zero-emission fuel cell systems for heavy-duty vehicles
- Sector
- Energy
- Headquarters
- GROTON, CT
- Founded
- 2021
- Latest Form D
- $1.8M, Sep 2024
- Total capital
- $1.8M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $1.8M
- 1 Form D · last Sep 2024
- 25 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 6
- 8 pending · first 2022
- Rank in peer group#22 of 166
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 1st filing$1.8M
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 166 peers
Line = medianEnergy · System
- Granted patents#22 · top 13%
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
Researcher links verified by same-company patents and grants- Matthew WilsonResearcherExecutive Officer, DirectorLinked by 6 patents
- Konstantine DrakonakisDirectorNamed in SEC Form D filings
- Michael GormanExecutive Officer, DirectorNamed in SEC Form D filings
What it has protected
USPTO · 6 granted of 14- PendingFour-fluid Bipolar Plate For Fuel Cell And Methods Of OperationUSPTOApplication 19261995
- GrantedMethod For Using Fuel Cell System Air Throttle To Control Hybrid Power SystemUSPTOUS 12,573,650
- GrantedFour-fluid Bipolar Plate For Fuel CellUSPTOUS 12,555,804
Show all 14 patent records
- Four-fluid Bipolar Plate For Fuel Cell And Methods Of OperationApr 9, 2026 · Application 19261995Pending
- Method For Using Fuel Cell System Air Throttle To Control Hybrid Power SystemMar 10, 2026 · US 12,573,650Granted
- Four-fluid Bipolar Plate For Fuel CellFeb 17, 2026 · US 12,555,804Granted
- Four-fluid Bipolar Plate For Fuel CellJul 8, 2025 · US 12,355,120Granted
- Fuel Cell System Air Throttle For Hybrid Power ControlDec 26, 2023 · US 11,855,322Granted
- Four-fluid Bipolar Plate For Fuel CellSep 12, 2023 · US 11,757,111Granted
- Four-fluid Bipolar Plate For Fuel CellAug 23, 2022 · US 11,424,460Granted
- Hybrid Power System With Regenerative Inverter And Method Of Using SameMar 11, 2021 · Application 16997662Pending
- Hybrid Power System With Regenerative Inverter And Method Of Using SameApplication 62927781Pending
- Four-fluid Bipolar Plate For Fuel CellApplication PCTUS2023032446Pending
- Hybrid Power System With Regenerative Inverter And Method Of Using SameApplication 62897499Pending
- Four-fluid Bipolar Plate For Fuel CellApplication PCTUS2023035179Pending
- Fuel Cell System Air Throttle For Hybrid Power ControlApplication PCTUS2023036962Pending
- Four-fluid Bipolar Plate For Fuel CellApplication PCTUS2022032283Pending
Related companies, and why
- MOLTEN SALT SOLUTIONS, LLCSimilar federal contract value in Energy · null in contracts
- Enchant Energy CorpSimilar federal contract value in Energy · null in contracts
- CruxOCM, Inc.Similar federal contract value in Energy · null in contracts
- AVIUM, LLCSimilar federal contract value in Energy · null in contracts
- 2W ITech LLCSimilar federal contract value in Energy · null in contracts
- Onder, 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 .