A clean green office

I outfitted my consulting firm with the latest tools to conserve energy and generate clean power.

Double-paned windows
Double-paned windows
Marvin
marvin.com
Prices vary

Running an energy-efficient office isn't just great for the environment. It's helping my sales grow 30 percent a year. As president of the Stella Group (thestellagroupltd.com), a five-person clean-energy consulting firm, I guide big companies and government clients such as the Department of Defense and the state of Mississippi through the maze of available green energy technologies and arrange financing when they make purchases. I designed my 880-square-foot, two-story office building in Arlington, Va., to illustrate how the latest green products work. If you want clients to use new technologies, it's smart to use them yourself.

I'm proud of how much energy we conserve. The building's double-paned Marvin windows (custom order at marvin.com) face southwest for maximum sun exposure, and the space between the panes is filled with argon, an inert gas that acts as insulation. In summer the temperature-sensitive glass screens light rays that give off heat.

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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.