A Team of seasoned Professionals

E2 has fused an ecosystem of electric mobility manufacturers, renewable energy, finance and capital solutions to accelerate safe and efficient onsite power generation, charging and storage. Our global team enriches the EnergyTwo ecosystem with over 1,700 years of experience.

OUR Mission

The E2 mission is to foster resiliency from fossil fuels, the grid, emergencies, power shut offs and future utility rate hikes while building self-sustaining communities.

David N. Benson

Founder and Managing Member

David’s career spans more than a decade in senior management roles in the solar industry including Sun Tech’s run up to IPO, Canadian Solar and Walgreens. Dave has a knack for expanding projects to national and global scale connecting his vast and vetted network of partners with residential and commercial clean energy demands.

At EnergyTwo Dave leads many facets of the growing e-infrastructure company, from strategy and vision to tactical sales, product and strategic alliances. He started E2 to help small and medium size businesses, often operating on thin margins due to high utility costs, reap the energy resilience, efficiency and savings of clean power.

Dave received his BA in International Relations from UC Davis and holds a general contractor license.

Cynthia Seymour

Executive Director, Marketing and Strategic Alliances

Cynthia’s career spans more than two decades in global marketing for startups and Fortune 500 technology companies, turning vision into commerce, IPOs and liquidity events.

At EnergyTwo she’s a founding member responsible for product development, market expansion and strategic alliances that round out clean energy solutions in markets such as agriculture, wineries and snow resorts.

Cynthia received her master’s degree in Global Policy Studies from UC San Diego.

Why join E2 and the clean energy revolution?
I want to make the planet more habitable for all species and leave a legacy my kids will benefit from and be proud of.

John Lefebvre

North American Operations and Development

Mr. Lefebvre founded MySOL Energy in 2013 to finance residential and small-commercial solar projects in Latin America with an innovative leasing model.  Mr. Lefebvre is also an associate (mentor) at Creative Destruction Labs (CDL), mentoring early stage climate solutions companies, a board director at Powerhive Inc, a mini-grid solar company based in Kenya, and previous board advisor to Mosaic, a solar loan company based in Oakland, California, who have provided over US$5B in residential solar loans.

Before starting MySOL Energy, Mr. Lefebvre served as President of Suntech Power Holdings, the world’s largest solar PV manufacturer based in Wuxi, China.  He was responsible for a US$1B operation and developing utility scale PV projects globally outside China and Japan.

Prior to Suntech, he served as EVP of Sales & Business Development at Tesla Energy (previously SolarCity) where he grew the company’s sales from $4M to $650M annually from 40 to over 4,500 employees.  Mr. Lefebvre was responsible for SolarCity’s sales growth and strategic partnerships like Home Depot, Tesla, Best Buy, Top 25 homebuilders, various utilities and retail electricity providers.  SolarCity went public in 2012 and was acquired by Tesla for US$2.6B.    

Mr. Lefebvre began his career in aerospace electronics before transitioning to the semiconductor industry for 12 years at Mattson Technology and Lam Research Corp.

Mr. Lefebvre has a BSEE from Clarkson University, a MSEE from Syracuse University and an MBA from UBC in Vancouver, Canada and ESADE in Barcelona, Spain.

Chuck Campbell

Chief Legal Officer

Chuck’s legal career spans nearly four decades advising institutional and private investors in connection with varied and diverse business opportunities. He specializes in corporate law and corporate finance, clean energy, private equity, mergers and acquisitions, real estate finance and leasing and general business law matters. His law firm represents a diverse clientele including regional, national and international lenders, high net worth individuals, start-up and emerging growth business ventures, and major private and publicly held corporations.

Chuck is a founding member of EnergyTwo responsible for overseeing the legal affairs of the Company, its subsidiaries and affiliated entities.

Chuck received his undergraduate degree in Business-Economics from the University of California, Los Angeles, and his law degree from the University of Southern California Law Center.

Why join E2 and the clean energy revolution? I want to do my part to be a good steward of the world’s resources and have a positive impact on future generations by leaving the world a better place. 

Neal Holmlund

Head of Global Supply Chain and Giga Factory

Neal’s career spans nearly three decades in product and engineering development, business strategy and supply chain management for microprocessors, circuits, magnetic memory and photovoltaics. His industry breadth includes both consumer and industrial processes for companies such as Mattson Technology and Suntech America.

At E2 Neal is responsible for leading a team that supports the global supply chain for residential and commercial clean energy production, storage and charging installations. He will also head up the company’s giga factory efforts to develop, manufacture and license leading clean energy products.

Neal earned his MBA from the University of Pennsylvania, The Wharton School, in addition to a BS in Chemical Engineering from Stanford University.

Neal values harnessing the natural power of sun, water and wind as evidenced by his mastery of sailing.

Brennan Gantner

Energy Storage Team Co-Leader

Dr. Brennan Gantner is a reformed rocket scientist that moved over to cleantech after his wife told him to get a ‘real job’.  He’s worked for NASA, Lockheed Martin and traveled the world helping launch astronomy and physic experiments into space.

 When his first child was born he decided that he wasn’t going to leave the planet a complete dump and has dove headfirst into the helping to solve the big chunks of the world economy that are driving climate change.

 To this end, he has spent the last decade working on the energy sector, specifically renewable generation and electricity storage. His goal to the shock the world by how fast we transition from a carbon fuel system to a renewable electrical grid in just a decade or two.

Benjamin Brown

Energy Storage Team Co-Leader

Dr. Ben Brown is an expert in theoretical astrophysics; he has worked and taught throughout academia at places like University of Wisconsin Madison, University of California Santa Barbara, and University of Colorado Boulder.

Teaching students about climate change in those classes made him realize that this is the most important problem in the world. Once he got his head out of the stars (literally!), he realized that his expertise in fluid dynamics and chemistry could help solve key parts of energy storage systems, and that working on these problems might leave a better planet for his kids too.

His goals are to decarbonize the grid and help rural communities become more resilient. We’ve got a decade to do it in: now is the time to act.

Jonas Kamf

President/CEO of Waves4Power AB – E2 Advisor

When Jonas first met Waves4Power back in 2010 he was caught by the concept of generating green electricity from ocean waves. So, when he got the question to take over the position as president/CEO in January 2019 and take the company into full commercialization, the answer was a clear YES!

After graduating with a degree in Business Administration from Gothenburg School of Business, Economics and Law he started his career in sales, marketing, business administration and advertising. Jonas spent over 20 years in the advertising business working for several advertising agencies. In 2010 Jonas left Grey Advertising in Gothenburg to join a leading marine contracting group as Marketing Director. This is where Jonas set his first eyes on the WaveEL system and met the founders and management of Waves4Power.

Jonas is an outdoor enthusiast and loves down-hill skiing as well as hiking. “Care for the outdoors and the environment are strong motivations for me in my work as CEO at Waves4Power. I like to contribute to keeping our planet clean and green for generations to come”.

Göran Fredrikson


For Göran the notion of generating electricity from ocean waves formed during his college years when he took part in his father’s test of the world’s first OWEC [Offshore Wave Energy Converter] in the ocean off the Swedish west coast.

After graduating with a master’s degree in Mechanical Engineering from Chalmers University of Technology in Sweden, he spent his early career in manufacturing management in Sweden and internationally. In 1993 he moved to USA for a position as president for a subsidiary of a leading Swedish medical device company.

About 15 years ago Göran took the leap from the corporate rat race to a full-time green career. His third wave power endeavor, Waves4Power – which he cofounded with some friends in 2012 – is now ready for primetime.

My vison with Waves4Power is a future where our children and grandchildren can live without fear of climate change and clean electricity is available for everyone.

Changing the Wave Power Narrative Part 1.

Doug Frazier

Ecommerce Lead

Doug got his start in the ’90s architecting databases and writing ecommerce applications.

He has been an independent consultant for 20 years, and CTO of Local Food Marketplace for 12 years.

His love of the outdoors and his two kids compel him to use his skillset to help E2 make a difference in our quickly warming climate before it’s too late.

Jouko Van Der Kruijssen

Web and Graphics Team Leader

Jouko has spent the last decade and a half as a web developer, graphic designer, marketing consultant and photographer in San Francisco.

At EnergyTwo, he is a founding member responsible for front-end web development, graphic design and brand creation.

Jouko received a Bachelor’s degree in Biology from the University of Amsterdam.

As a wildlife photographer and outdoor enthusiast, Jouko is determined to do his part in moving the planet forward into a sustainable and habitable future.

Rob Ridgway

Log & Heavy Timber Specialist

Rob’s career spans over four decades in the log home and timber frame/post & beam industry.

Over the years he has helped hundreds of families design, budget and build their dream homes. Rob’s involvement with commercial projects has spanned everything from nationwide sporting goods stores with log and timber rustic themes, to hotels and restaurants, golf courses, ski resorts, and mountain developments. Some of his proudest achievements come from projects involving Yellowstone and Glacier National Parks, the Grand Canyon and various state and local parks across the USA.

He’s been involved with projects from the Adirondacks to California and Texas to British Columbia. He also invested several years developing the market for log homes in Japan, Taiwan, and South Korea.

Rob’s experience will assist Energy Two’s clients in the creation of Power Pads where the owners desire attractive, sturdy support structures to add natural beauty to their installations.


“My career has centered around the use of dead standing logs and timbers from our state and national forests. Using logs that have been killed by infestation or wildfire recycles a renewable natural resource and builds legacy structures that we can all be proud of. I’m excited to join the Energy Two mission.”

John Moran

Advisor to E2

John’s acumen in finance, sales and project management in the sustainability sector provides steady stewardship at E2. With a career that spans senior positions at notable companies from Suntech to Goldman Sachs, John lends operational excellence and leadership to help navigate the ever changing climate of clean tech. 

As managing director at Lafayette Square, John is our Section 8 multi-family residence partner on the East Coast. E2 will develop and fulfill solar + storage projects to Lafayette’s financed portfolio. 

John is among the seasoned, globally and community-minded E2 Advisors who offer a strategic lens and a wealth of connections for securing, funding and deploying commercial, municipal and micro-grid scale renewable solutions. 

John holds a BS in Science/Business from the University of Notre Dame.  

Tim Hennessy

Phase 3 Development Consultant

Paul Coleman

IT Team Leader – E2 Advisor
Paul Coleman has been in the Information Technology field since graduating from college in 1994. He started his own IT company in 1999 and has been running it ever since. He holds certifications with Microsoft and Unix platforms. Paul loves the outdoors and is an avid mountain bike rider. He and his wife are raising their son and two daughters in the hills of Marin County, CA.

Joe Seiwert

PowerPad Lead

Joe has more than 30 years of experience in technology development, engineering, capital project management and operations from multi-national companies to startups.  

His career includes DOE-sponsored energy projects in the renewables (solar & wind), storage (battery and thermal), nuclear and natural gas exploration areas.  

Joe has been responsible for capital project development, including board level financial justification, management, technical direction and startup of projects in excess of $250MM. One example is a corporate sustainability program which included evaluation and implementation of solar power generation, battery storage for facility operation continuity and electrical vehicle charging. 

An entrepreneur at heart, he is focused on helping companies achieve rapid, sustainable growth.  

Joe holds an undergraduate degree in Physics and graduate degrees in management from Columbia University and UC Berkeley. 

Greg Rosen

E2 Capital LLC – GM
Greg Rosen is a 20+ year innovative renewables finance veteran and strategist who has developed or financed more than $500 million worth of residential, commercial and utility-scale clean energy projects. Over the last 7 years, he has advised many companies, government entities, foundations, and non-profits. Prior to that, he served as the Chief Investment Officer at Mosaic, where he raised funds for portfolios of solar home loans. Prior to to that, he served as Vice President of Solar Finance at Union Bank where he originated and closed tax equity and syndicated solar loan transactions. He also raised and managed a tax equity fund for Citibank Community Capital and held various other positions in finance and investment banking, including several years pioneering solar project finance at PowerLight and SunPower Corporations.

Mike Markovich

Customer Success Lead – Software Developer

Mike Markovich is a San Francisco software developer with experience at companies of all sizes and stages. When he’s not typing, he enjoys live music, old cars and urban walks.

Matthew “Matty” Perron

E2 Ultra4 racing team leader

Matt started rebuilding engines at age 13, and his love of off-road racing took off. After joining a pit crew he became fully involved in off-road racing: building, testing and driving vehicles. Matt continued winning championships through the deserts of California and Baja, Mexico.

At E2, Matt will lead the design and development of the company’s off-road Ultra4 EV race vehicles and bring his knowledge and experience to the E2 Ultra4 Racing Team.

In 2011, Matt started building specialized vehicles for racing in the King of The Hammer’s, and this pursuit continues to the present day. Matt’s advice and experience is revered and sought after by many, and his career is unmatched in the industry.

His “shop” is Johnson Valley where he tests vehicles on the “Hammer Trails”. Matt and his specialized vehicles conquered the “Hammers” before the King of the Hammer’s racing event started, and he maintains that EVs will be his next big test.

Jason Perron

Power for Tower Program Manager

Jason Perron’s experience spans more than two decades engineering, building and maintaining the most reliable and robust communication systems in the world. He is currently working on the most proficient EV off road system ever built. 

His expertise includes nuclear sites, police and emergency systems, Internet connectivity for homes, schools, businesses and government such as International National Engineering and Environmental Laboratories (INEEL). In addition, he maintains communications for 100 large-scale solar farms. 


Get In Touch

The EnergyTwo LLC team is ready to answer your questions about the E2 PowerPad, sustainable energy solutions for your business or community, and to discuss investment opportunities for communities and businesses just like yours. Get engaged in the energy evolution from fossil to forever fuels with EnergyTwo.

EnergyTwo LLC

700 Larkspur Landing Circle
Suite 199
Larkspur, CA 94939