JENS MEYERHOFF
(Chairman)

Jens Meyerhoff is the lead investor in Reterro’s most recent financing and a current board member. He also holds the position as Chief Commercial Officer at Tri Alpha Energy, the world’s largest privately funded nuclear fusion company.  Prior, he was CFO at First Solar (FSLR), the world’s largest producer of thin film solar panels, where he lead the company’s IPO in 2011. He also lead First Solar’s transformation into an integrated Power Plant developer as President of the Utility Systems Group and drove the financing and sale of over $10 billion in solar assets.

Prior to First Solar, Jens was COO and CFO at FormFactor (FORM), a leader in the semiconductor test space. Jens took FORM public in 2003, the first technology IPO since the NASDAQ crash in 2000. He was also previously CFO and SVP Operations at Siliconix.

Jens has a long track record of building leading technology businesses, all of which have become the market leaders in their space, and, gained recognition by Wall Street as #1 in their industries. He holds a Wirtschaftsinformatiker (a finance and information technology) Degree from Daimler-Benz’s Executive Training Program.


TOM DOYLE
(Reterro CEO)

Prior to Reterro, Tom was the President and CEO of NRG’s renewable energy business (NRG Renew) and an Executive Vice President at NRG Energy, the largest independent energy company in the United States. NRG Renew is one of the largest renewable energy companies in the world with a wind and solar (PV and CSP) portfolio that exceeds 5000 MWs. 

Prior to running NRG’s renewable energy business, Tom was President and CEO of NRG Solar, a company he established in October 2009 when he joined NRG. NRG Solar was a first mover in the utility solar industry and by 2013 became the largest solar company in the nation from an equity ownership perspective. Tom then expanded his team’s capabilities to become an industry leader in the high growth commercial and industrial sectors of the solar industry.  Under Tom's leadership, NRG Solar successfully placed over $7.5 billion of capital that generated a significant return on equity and an annual EBITDA contribution of over $550 million. These renewable assets ultimately became the foundation of the nation’s first publicly listed YieldCo (NYLD) which resulted in substantial market cap uplift to the NRG parent company.

Tom has more than 25 years of domestic and international experience in senior level positions growing and managing a significant P&L. He spent 15 of those years living in Asia wearing the roles of Asia Pacific Managing Director for the international development company InterGen as well as the Asia Pacific Managing Director for Foster Wheeler Energy Corporation.  Tom holds an MBA and a Bachelor of Science degree in Mechanical Engineering from the University of Arizona.


KEVIN SCHIEFFER

Kevin became the President and Chief Executive Officer of the Dakota, Minnesota & Eastern Railroad Corporation (DM&E) in 1996, and of the Iowa, Chicago & Eastern Railroad Corporation (IC&E) since its inception in 2002, until his semi-retirement in 2008 following the sale of the company. During his tenure, Mr. Schieffer renegotiated a series of legacy agreements DM&E had with C&NW, which led to the recapitalization of DM&E in 1994. The following year he negotiated with Union Pacific Railroad for the acquisition of the strategically important 203-mile Colony line in western South Dakota, which was consummated in 1996. In 2002, he negotiated the acquisition of 1,400 miles of the former CP/Soo lines, providing important access to the rail gateways of Chicago, Minneapolis and Kansas City, and to various river and Great Lake ports (IC&E). At the time of the 2007 sale, the DM&E/IC&E system had grown into the largest contiguous non-Class I railroad in the United States, was the only system with competitive connections to all 7 Class I railroads operating in North America, and had achieved the lowest operating ratio of any railroad in North America of any class.

Prior to Kevin’s work for DM&E, President George H.W. Bush appointed him  U.S. Attorney for South Dakota in 1991, an office he held until shortly after President Bush left office in 1993. Following his service as U.S. Attorney, he formed a law firm in Sioux Falls, SD, practicing until 1996. During that time, he served as legal counsel to DM&E, as well as numerous other national and regional clients.

From 1982 to 1991, Kevin worked for U.S. Senator Larry Pressler (R-SD).  He rose from mail clerk to Chief Legislative Counsel and finally to Chief of Staff in 1986, which he held until his appointment as U.S. Attorney for South Dakota.

Kevin currently serves on various private and public boards, including the South Dakota Board of Regents and the National Music Museum.

He received his BA from the University of South Dakota, graduating Phi Beta Kappa and with the school’s highest academic honors as University Scholar.  He received his law degree from Georgetown University in 1985, where he was also on the International Law Review. Kevin also later taught International Law at Georgetown University as an Adjunct Professor of Law during his last year in D.C.  He is the 9th of 12 children, and is married (Laney), with two daughters (Brooke and Annabella) and one son (Alexander).


JEFF SAMBERG

Jeff Samberg is the Managing Director of Acadia Woods Partners, LLC, a New York based investment partnership that focuses primarily on early stage technology companies. Jeff lived in the San Francisco Bay Area for 15 years where he held a number of high-tech management roles, including Vice President of Corporate Strategy for PeopleSoft Inc., Vice President of Business Development for Wily Technology, and Entrepreneur in Residence for Greylock Partners. Jeff received his MBA from Stanford University's Graduate School of Business and his B.A. with high honors in Economics from Princeton University.