
Jeffrey Brian Straubel (; born December 20, 1975) is an American businessman and electrical engineer. He spent 15 years at
Tesla,
[ as chief technical officer until moving to an advisory role in July 2019.][ In 2023, he was elected to the company's board of directors.
In 2017, Straubel founded and became the CEO of Redwood Materials, Inc., working on creating battery materials and products for ]lithium-ion batteries
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids to store energy. Li-ion batteries are characterized by higher specific energy, energy ...
out of recycled batteries.
Education
Straubel holds a Bachelor of Science in energy systems engineering and a Master of Science in energy engineering from Stanford University
Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
.
Career
Straubel joined Tesla as its fifth employee in 2004, and is named as a co-founder. He was its inaugural chief technical officer until moving to an advisory role in July 2019.
At Tesla, Straubel led battery cell design, supply chain and led the first Gigafactory concept through the production ramp of the Model 3. He had a direct role in research and development
Research and development (R&D or R+D), known in some countries as OKB, experiment and design, is the set of innovative activities undertaken by corporations or governments in developing new services or products. R&D constitutes the first stage ...
, team building, and operational expansion from prototype cars through to mass production and expanding battery production to gigawatt-hour scale. Straubel also had responsibility for new technology evaluation, technical due diligence
Due diligence is the investigation or exercise of care that a reasonable business or person is normally expected to take before entering into an agreement or contract with another party or an act with a certain standard of care.
Due diligence ...
review of key vendors and partners, intellectual property
Intellectual property (IP) is a category of property that includes intangible creations of the human intellect. There are many types of intellectual property, and some countries recognize more than others. The best-known types are patents, co ...
, and systems validation testing. In addition to his work at Tesla, Straubel was also on the board of directors at SolarCity
SolarCity Corporation was a publicly traded company headquartered in Fremont, California, that sold and installed solar energy generation systems as well as other related products and services to residential, commercial, and industrial custom ...
. As the result of a court settlement, Straubel is legally considered to be a co-founder of Tesla.
He was also a lecturer at Stanford University
Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
for the 2015-2016 academic year, where he taught the energy storage integration classes (CEE 176C & CEE 276C) in the Atmosphere and Energy Program.
In 2017, Straubel established Redwood Materials, working on the recycling of lithium-ion batteries and e-waste.[
Prior to Tesla, Straubel was the CTO and co-founder of Volacom along with Harold Rosen. Volacom worked closely with ]Burt Rutan
Elbert Leander "Burt" Rutan (; born June 17, 1943) is a retired American aerospace engineer and entrepreneur noted for his originality in designing light, strong, unusual-looking, and energy-efficient air and space craft. He designed the recor ...
at Scaled Composites
Scaled Composites (often called simply Scaled) is an American aerospace company founded by Burt Rutan and currently owned by Northrop Grumman. It is located at the Mojave Air and Space Port in Mojave, California, United States. Founded to d ...
to design a specialized high-altitude aircraft platform using a novel hydrogen-powered electric power plant. At Volacom, Straubel co-invented and patented a new long-endurance hybrid propulsion concept that was later licensed to Boeing
The Boeing Company, or simply Boeing (), is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide. The company also provides leasing and product support s ...
.
In the area of technical expertise, Straubel has consulted with venture capital
Venture capital (VC) is a form of private equity financing provided by firms or funds to start-up company, startup, early-stage, and emerging companies, that have been deemed to have high growth potential or that have demonstrated high growth in ...
firms Taproot Ventures and Kleiner Perkins
Kleiner Perkins, formerly Kleiner Perkins Caufield & Byers (KPCB), is an American venture capital firm which specializes in investing in incubation, early stage and growth companies. Since its founding in 1972, the firm has backed entrepreneur ...
, in addition to several other private equity investors, to conduct technical due diligence reviews for many start-ups in the energy and clean energy
Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." Definitions of sustainable energy usually look at its effects on the environment, the economy, and s ...
technologies category. Straubel is on the board of QuantumScape and also consults with Amory Lovins
Amory Bloch Lovins (born November 13, 1947) is an American writer, physicist, and former chairman/chief scientist of the Rocky Mountain Institute. He has written on energy policy and related areas for four decades, and served on the US Nation ...
at the Rocky Mountain Institute
RMI, or Rocky Mountain Institute, is a global, independent, non-partisan non-profit organization co-founded in the United States by Amory Lovins. As of 2025, RMI's stated mission is to transform "global energy systems through market-driven solut ...
.
Although he did not originally intend to work in the automobile industry, Straubel has long had a passion for electric vehicles. He built an electric Porsche 944 that earned the /B world electric vehicle racing record in 2000.
Four years after leaving Tesla, Straubel was elected to its board as an independent director in May 2023.
Personal life
On August 3, 2013, Straubel married Boryana Dineva and they lived in Woodside, California. In 2015 she gave birth to twins. When Straubel left as CTO at Tesla in July 2019, they moved to Nevada where Redwood Materials was located. She had worked as a manager in human resources
Human resources (HR) is the set of people who make up the workforce of an organization, business sector, industry, or economy. A narrower concept is human capital, the knowledge and skills which the individuals command. Similar terms include ' ...
at Tesla and was a vice president of human resources at the Wikimedia Foundation
The Wikimedia Foundation, Inc. (WMF) is an American 501(c)(3) nonprofit organization headquartered in San Francisco, California, and registered there as foundation (United States law), a charitable foundation. It is the host of Wikipedia, th ...
for one year.
On June 19, 2021, Boryana was killed while cycling in a designated bike lane in a rural area when a car crossed a double yellow line
Yellow lines are road markings used in various territories.
Single yellow lines Parking restrictions
UK & Ireland
A single yellow line is a road marking that is present on the side of the carriageway across the British Isles.
In the Uni ...
on Old Highway 395 in Washoe County, Nevada
Washoe County () is a county in the U.S. state of Nevada. As of the 2020 census, the population was 486,492, making it Nevada's second-most populous county. Its county seat is Reno. Washoe County is included in the Reno, NV Metropolitan Sta ...
and hit her head-on. The driver was unlicensed.
Public recognition
His photograph was taken in July 2006 driving Governor
A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...
Arnold Schwarzenegger
Arnold Alois Schwarzenegger (born July30, 1947) is an Austrian and American actor, businessman, former politician, and former professional bodybuilder, known for his roles in high-profile action films. Governorship of Arnold Schwarzenegger, ...
in the Tesla Roadster at its unveiling in Santa Monica, California
Santa Monica (; Spanish language, Spanish: ''Santa Mónica'') is a city in Los Angeles County, California, Los Angeles County, situated along Santa Monica Bay on California's South Coast (California), South Coast. Santa Monica's 2020 United Sta ...
.
''Popular Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written ...
'' magazine featured Straubel in a full-length article in April 2007.
In September 2007, Straubel spoke on an energy panel titled "Clean, Secure, and Efficient Energy" at Stanford University
Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
along with former Secretary of State, George P. Shultz, where he emphasized the importance of education about climate change
Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
, and decreasing the intensity of our current energy production methods.
In early 2008, ''Stanford Magazine'' featured Straubel's role in growing the Stanford
Leland Stanford Junior University, commonly referred to as Stanford University, is a private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth governor of and th ...
presence at Tesla.
Straubel was honored to keynote the Stanford Alumni EDAY in July 2008. Also in July 2008, Straubel spoke on a transportation panel "Progression Toward EVs" a
Plug In 2008
In 2008, Straubel was named ''Innovator of the Year'' by MIT's Technology Review in their annual TR35 innovators in the world under the age of 35. He spoke at MIT's Emtech conference on a panel on green transportation in Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...
, MA in September 2008.
In March 2012, Straubel spoke at the DESIGN West conference, produced by UBM Electronics, at the McEnery Convention Center in San Jose, CA.
Redwood Materials
Redwood Materials is a company established in Nevada by Straubel in 2017, to recycle lithium-ion
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible Intercalation (chemistry), intercalation of Li+ ions into electronically Electrical conductor, conducting solids to store energy. Li-ion batteries are c ...
automotive battery packs on a large scale. , the company had been operating in stealth mode
In business, stealth mode is a company's temporary state of secretiveness, either in total stealth mode when everything about the company is kept secret, or in-company stealth mode which is usually undertaken to avoid alerting competitors to a pen ...
as the technologies and processes were developed to enable the company to begin operation in the early 2020s.
On August 29, 2020, Straubel was interviewed by The Wall Street Journal
''The Wall Street Journal'' (''WSJ''), also referred to simply as the ''Journal,'' is an American newspaper based in New York City. The newspaper provides extensive coverage of news, especially business and finance. It operates on a subscriptio ...
and revealed additional details:
* Redwood Materials is inventing sustainable materials by creating circular supply chains, turning waste into profit and solving the environmental impacts of new products before they happen.
* In 2019, Panasonic
is a Japanese multinational electronics manufacturer, headquartered in Kadoma, Osaka, Kadoma, Japan. It was founded in 1918 as in Fukushima-ku, Osaka, Fukushima by Kōnosuke Matsushita. The company was incorporated in 1935 and renamed and c ...
, Tesla's battery partner, began a partnership with Redwood to reclaim the scrap it generates in making battery cells: all of the scrap coming from Panasonic’s side of the Nevada Tesla Gigafactory is now shipped to Redwood.
* In 2020, Redwood closed its first fundraising round with $40 million raised from Capricorn Investment Group and Breakthrough Energy Ventures, an environmental investment fund that includes Amazon.com Inc. founder Jeff Bezos
Jeffrey Preston Bezos ( ;; and Robinson (2010), p. 7. ; born January 12, 1964) is an American businessman best known as the founder, executive chairman, and former president and CEO of Amazon, the world's largest e-commerce and clou ...
and Microsoft
Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...
Corp. co-founder Bill Gates
William Henry Gates III (born October 28, 1955) is an American businessman and philanthropist. A pioneer of the microcomputer revolution of the 1970s and 1980s, he co-founded the software company Microsoft in 1975 with his childhood friend ...
.
* As part of Amazon
Amazon most often refers to:
* Amazon River, in South America
* Amazon rainforest, a rainforest covering most of the Amazon basin
* Amazon (company), an American multinational technology company
* Amazons, a tribe of female warriors in Greek myth ...
’s continued commitment to The Climate Pledge, a $2 billion venture investment program to back companies building technologies, products and services that will help Amazon and other companies accelerate the path to net-zero carbon, received an investment. Redwood will be able to offer Amazon and other companies sustainable ways to recycle batteries, electronics and other end of life products through environmentally-sound processing and refining technologies that create a sustainable, circular supply chain. Redwood Materials will also help Amazon properly recycle EV and other lithium-ion batteries and e-waste from other parts of Amazon’s businesses and reuse their components.
* In July 2021, Redwood Materials had more than 130 employees.
* Straubel hopes that within 10 years recycling will bring the price of raw materials for lithium ion batteries down to about half of what it costs to mine virgin material.
In June 2021, Redwood announced plans to expand its Carson City, Nevada facility to 550,000 square feet. Plans were also revealed to build another facility at the Tahoe-Reno Industrial Center and to recruit 500 more employees.
In July 2021, Redwood raised $775 million from investors and venture firms. Investment management group T. Rowe Price Associates led a Series C round of funding that included Goldman Sachs Asset Management
The Goldman Sachs Group, Inc. ( ) is an American multinational investment bank and financial services company. Founded in 1869, Goldman Sachs is headquartered in Lower Manhattan in New York City, with regional headquarters in many international ...
, Baillie Gifford
Baillie Gifford & Co is a British investment management firm which is wholly owned by partners, all of whom work within the firm. It was founded in Edinburgh, Scotland, in 1908 and still has its headquarters in the city. It has corporate offices ...
, Canada Pension Plan Investment Board
The Canada Pension Plan Investment Board (CPPIB; ), operating as CPP Investments (), is a Canadian Crown corporation established by way of the 1997 ''Canada Pension Plan Investment Board Act'' to oversee and invest the funds contributed to and h ...
, Fidelity
Fidelity is the quality of faithfulness or loyalty. Its original meaning regarded duty in a broader sense than the related concept of '' fealty''. Both derive from the Latin word , meaning "faithful or loyal". In the City of London financial m ...
, Valor Equity Partners, Emerson Collective and Franklin Templeton
Franklin Resources, Inc. is an American multinational investment management holding company that, together with its subsidiaries, is referred to as Franklin Templeton; it is a global investment firm founded in New York City in 1947 as Franklin ...
. Capricorn’s Technology Impact Fund, Bill Gates’ Breakthrough Energy Ventures and Amazon’s Climate Pledge Fund also returned to invest additional capital.
References
External links
Official JB Straubel website
{{DEFAULTSORT:Straubel, J
1975 births
Living people
21st-century American businesspeople
21st-century American engineers
American electrical engineers
American technology chief executives
American technology company founders
Businesspeople from Iowa
Engineers from Iowa
Kleiner Perkins people
Stanford University alumni
Tesla, Inc. people