Energy and Environment

Up on the Roof

In 2010 Vanessa Keitges and several investors purchased Portland-based Columbia Green Technologies, a green-roof company. The 13-person firm has a 200% annual growth rate, exports 30% of its product to Canada and received its first infusion of venture capital in 2014 from Yaletown Venture Partners. CEO Keitges, 40, a Southern Oregon native who serves on President Obama’s Export Council, talks about market innovation, scaling small business and why Oregon is falling behind in green-roof construction. 

Energy Stream

BY LINDA BAKER

Oregon already ranks as the nation’s second largest generator of hydroelectric power. (Washington is No. 1). Now an elegant new installation in Portland is putting an unconventional, sharing economy twist on this age-old water-energy pairing. The new system, launched this winter, uses the flow of water inside city water pipes to spin four turbines that produce electricity for Portland General Electric customers. 

Driving green

BY KIM MOORE

Transportation accounts for the second-largest source of greenhouse gases in the U.S. (28% in 2012), and the use of renewable fuels, such as biodiesel and ethanol, is booming in light of state and national programs to make transportation fuels cleaner.

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