Fundraising Fox

Tau Motors

San Francisco, US · Founded 2017 · Delaware corporation · 2 known investors

Tau Motors develops a software-defined power conversion platform spanning motors, inverters and controls for electrified systems.

Also known as Tau · Tau Motors

Founders & leadership

JE
Jonathan EllmanNamed on SEC filing
WW
Walter Wesley Pennington IIINamed on SEC filing

Investors · 2

Reported raises · per SEC filings

Form D private placements

$750K disclosed across 1 round · 2018

$750KraisedMar 2018 · 1 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Jonathan EllmanDirector
  • Walter Wesley Pennington IIIExecutive Officer, Director
Amount sold
$750K
Minimum investment
$100K
Proceeds to insiders
$170K
First sale
Feb 2018
Incorporated
Corporation, Delaware, 2017
Federal exemptions
06b
Full filing on SEC EDGAR ↗

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

Company profile

researched Aug 2026

Tau Motors is a power conversion technology company building what it describes as a software-defined power conversion platform intended to replace or upgrade legacy electric systems. Its stated focus is on efficiency, power density and scalability across applications ranging from electric vehicles to grid infrastructure, with a full-stack approach that spans hardware and control software.

The company organizes its offering into three areas: Motion, covering software-defined powertrain technologies that it says achieve high efficiency and power density without rare-earth materials; Power, a modular and networked power conversion platform with integrated power electronics and controls; and Energy, covering converters and electric machines aimed at expanding electric resource and energy needs. Stated engineering capabilities include motors and generators, inverters and converters, control systems, thermal management, battery and energy management, digital twins, system design, and manufacturing and scale-up.

Business model

Tau Motors states that it partners with industry participants to develop and deploy products built on its power conversion platform, working directly with those partners on technology, products and engineering expertise.

Full profile — technology, go-to-market

Technology

The company's platform centers on software-defined power conversion hardware, combining electric machines, inverters and converters with integrated power electronics and control systems. Tau states its powertrain technologies use no rare-earth materials, and lists supporting capabilities in thermal management, battery and energy management, digital twins and system design.

Go-to-market

Tau Motors markets itself through partnerships with companies in its target industries, inviting prospective partners to co-develop and deploy solutions on its platform.

Tau Motors identifies target industries including automotive, energy, defense, solar, aerospace, marine, space, industrial and wind.

Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.

Competitors · 2

by search overlap

Companies competing with Tau Motors for the same Google search keywords, organic and paid, via search-intersection analysis.

Legal entities · 1

corporate structure
Tau MotorsDelaware

Research sources · 1

primary sources listed

1 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Tau Motors do?
Tau Motors develops a software-defined power conversion platform spanning motors, inverters and controls for electrified systems.
Who are Tau Motors's investors?
Tau Motors's investors include Dns Capital, Yes VC.
How much funding has Tau Motors raised?
Tau Motors has disclosed $750K raised across 1 round.
Where is Tau Motors headquartered?
Tau Motors is headquartered in San Francisco, US.