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Johnson Energy Storage

Atlanta, US · Founded 2021 · Delaware corporation

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Johnson Energy Storage develops all-solid-state lithium batteries (ASSB) based on a patented glass electrolyte separator that suppresses lithium dendrites and is stable in contact with lithium metal and metal oxide cathode materials. The company focuses on advanced battery technology, drawing on over 20 years of research.

Founders & leadership

Johnson Energy Storage was founded in 2021 by Lonnie G. Johnson.

LGLonnie G. Johnson
Lonnie G. JohnsonFounderLonnie Johnson is an engineer with prior experience at NASA and the Air Force, holds over 150 patents primarily in energy-related fields, and was inducted into the National Inventors Hall of Fame in 2022. He founded Johnson Energy Storage to develop all-solid-state lithium batteries based on proprietary glass electrolyte technology.
UB
U. Bertram EllisExecutive
JW
John W. WilsonExecutiveJohn W. Wilson held senior executive roles at Siemens Power Generation in business development, strategy, and global sales organization leadership. He subsequently founded Wilson Enterprise Engineering, a consulting firm focused on strategic planning, change management, and program management.

Board

UB
U. Betram EllisBoard director
MS
Michael S. McQuaryBoard director
MW
Mack WilbournBoard director

Reported raises · per SEC filings

Form D private placements

$14.5M disclosed across 5 rounds · 2021–2025

▶$1MraisedApr 2025 · 1 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Lonnie G. JohnsonExecutive Officer, Director
  • Clyde TuggleDirector
  • Mack WilbournDirector
  • U. Bertram EllisExecutive Officer, Director
  • Brandon MartinExecutive Officer, Director
  • Michael S. McQuaryDirector
Offering amount
$65M
Amount sold
$1M
Minimum investment
$10K
Finders' fees
$1.6M
First sale
Feb 2025
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$10.7MraisedAug 2024 · 27 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • U. Bertram EllisExecutive Officer, Director
  • Michael S. McQuaryDirector
  • Mack WilbournDirector
  • Lonnie G. JohnsonExecutive Officer, Director
Offering amount
$15M
Amount sold
$10.7M
Minimum investment
$10K
First sale
Jan 2024
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$250KraisedApr 2024 · 1 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Lonnie G. JohnsonExecutive Officer, Director
  • Michael S. McQuaryDirector
  • Mack WilbournDirector
  • U. Bertram EllisExecutive Officer, Director
Amount sold
$250K
Minimum investment
$100K
First sale
Mar 2024
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$2.6MraisedOct 2022 · 2 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • U. Bertram EllisExecutive Officer, Director
  • Michael S. McQuaryDirector
  • Lonnie G. JohnsonExecutive Officer, Director
  • Mack WilbournDirector
Offering amount
$3.9M
Amount sold
$2.6M
Minimum investment
$25K
First sale
Oct 2021
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$1.4KraisedApr 2021 · 4 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • U. Betram EllisDirector
  • John W. WilsonExecutive Officer, Director
  • Mack WilbournDirector
  • Michael S. McQuaryDirector
  • Lonnie G. JohnsonExecutive Officer, Director
Offering amount
$1.4K
Amount sold
$1.4K
First sale
Apr 2021
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

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Frequently asked questions

What does Johnson Energy Storage do?
Johnson Energy Storage develops all-solid-state lithium batteries (ASSB) based on a patented glass electrolyte separator that suppresses lithium dendrites and is stable in contact with lithium metal and metal oxide cathode materials. The company focuses on advanced battery technology, drawing on over 20 years of research.
Who founded Johnson Energy Storage?
Johnson Energy Storage was founded by Lonnie G. Johnson in 2021.
How much funding has Johnson Energy Storage raised?
Johnson Energy Storage has disclosed $14.5M raised across 5 rounds.
Where is Johnson Energy Storage headquartered?
Johnson Energy Storage is headquartered in Atlanta, US.