They use natural, organic, sustainably harvested, renewable, pure raw materials.
Chen made his fortune in the 1990s through his company Huangpu Renewable Resources, a construction materials recycling firm.
GoodWoodWatch, a collaboration of local environmental groups and the Canadian branches of Greenpeace and the Sierra Club, has praised Vanoc for using renewable, local lumber in place of building materials like steel, aluminium and plastic, which have much higher carbon costs.
Global revenues from clean tech businesses--including air and water purification, advanced materials, distributed power generation, renewable energy, and process controls, such as sensors to monitor air and water--now surpass 85 billion pounds, according to the Cleantech Venture Network, a for-profit membership group that connects venture and institutional investors with entrepreneurs.
The inclusion of food production also points to a broadening of the definition of green tech, which in the past referred more narrowly to technologies such as those for renewable electricity and biofuel production, electric car development and new materials and services that help consumers and businesses use energy more efficiently.
FORBES: Water, Food, Transportation: Where Green Tech Investments Will Go In 2013
Nevada's first platinum-certified LEED (Leadership in Energy and Environmental Design) buildings stand proudly here, constructed of recycled materials and rammed-earth walls, with passive cooling, renewable heating, reclaimed water and solar-electricity panels, all harvesting clean energy.
"These results open the potential for visibly transparent polymer solar cells as add-on components of portable electronics, smart windows and building-integrated photovoltaics and in other applications, " said study leader Yang Yang, a UCLA professor of materials science and engineering, who also is director of the Nano Renewable Energy Center at California NanoSystems Institute (CNSI).
ENGADGET: UCLA creates transparent solar cell, dreams of current generating windows
The city is completely powered by renewable energy sources such as solar, and the buildings are being constructed with recycled materials, including steel and aluminium.
We talked about investments in clean energy, to not only create jobs but to make America a global leader in renewable energy technology. (Applause.) We talked about incentives for homeowners, for the materials and labor they need to make their homes more energy efficient.
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