Eric Wesoff


Prior to joining Greentech Media, Eric Wesoff founded Sage Marketing Partners in 2000 to provide sales and marketing-consulting services to venture-capital firms and their portfolio companies in the alternative energy and telecommunications sectors. Mr. Wesoff has become a well-known, respected authority and speaker in these fields. He also was the publisher of the Venture Power newsletter, a subscription-only newsletter covering venture-capital investment in renewable energy.

Eric's expertise covers solar power, fuel cells, biofuels and advanced batteries. His strengths are in market research and analysis, business development and due diligence for investors. He frequently consults for energy startups and Silicon Valley's premier venture capitalists.

From 1988 to 1996, Eric served as product marketing manager for Siemens Optoelectronics, where he oversaw complex product lines and managed relationships with global customers. He then became the U.S. marketing and sales manger for Akzo Nobel Photonics, which was acquired by JDS Uniphase. Eric later served as the sales director for Dicon Fiber Optics, where he was responsible for selling millions of dollars of fiber-optic telecom-equipment. He has consulted for Merck, JDSU, Coherent, IBM and scores of other firms, governments and organizations.

In 2012, Eric was named the most influential journalist in energy by the Text100 Digital Index: Energy report.

Stephen Lacey

Senior Editor

Stephen Lacey is a Senior Editor at Greentech Media, where he focuses on solar, energy efficiency and grid modernization. He has extensive experience reporting on the business and politics of cleantech. He is also the host of the Energy Gang, a popular podcast that that dives into the technological, political, and market forces driving energy and environmental issues. He is based in Washington, D.C.

Jeff St. John


Jeff St. John is a reporter and analyst covering the green technology space, with a particular focus on grid edge, smart buildings, energy efficiency, demand response, energy storage, green IT, renewable energy and technology to integrate distributed, intermittent green energy into the grid. Jeff majored in English and graduated from the University of California at Berkeley in 1994. He attended U.C. Berkeley’s Graduate School of Journalism, where he earned his masters of journalism degree in 2001 while working as an intern for the technology Web site and freelancing for publications including the San Francisco Chronicle. From 2001 to 2008, he worked as a newspaper reporter at the Anchorage Daily News in Alaska, the Tri-City Herald in Washington state and The Fresno Bee in California’s Central Valley, where he covered business while also serving as a general assignment and features writer, and earned awards including the C.B. Blethen Memorial Awards, the Society of Professional Journalists Pacific Northwest Excellence in Journalism award and a 2005 National Headliner Award for his coverage of worker injuries and health risks at the Tyson Foods meatpacking plant in Pasco, WA. In 2008 he joined Greentech Media as a reporter, where he writes daily breaking news stories and features on business, finance and policy issues in the fields of renewable energy, energy efficiency, smart grid and other green technologies. He believes that green technology is humanity’s greatest hope to save the planet and itself.

Katherine Tweed


Katherine Tweed writes on grid edge, demand response, energy efficiency and home networking for Greentech Media. Her freelance work has appeared in a range of media outlets, from Scientific American and FoxNews to Audubon Magazine and Men’s Health. She has a master’s degree in Science, Health and Environmental Reporting from New York University. Katherine never leaves her electronics in stand-by mode.

Julia Pyper

Senior Writer

Julia Pyper is a Senior Writer at Greentech Media, where she covers utilities, grid issues, electric vehicles, the solar industry and energy storage. She is a former reporter for E&E News, ClimateWire, where she covered developments in clean transportation, grid resiliency, renewable energy and climate policy. Pyper received her master’s degree in journalism at Columbia University. She's currently based in Washington D.C.