ReVision Energy Offices Closer to ‘Net Zero’
Solar Power | April 10, 2013 |Posted by Fred Greenhalgh
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ReVision Energy’s goal is to make its three office locations 100% carbon neutral through solar energy systems and efficient mechanical systems. The Portland & Exeter shops both took long strides down the sustainability path this month.
To eliminate the need for backup propane heat, the Portland shop added a Mitsubishi ductless mini-split air source heat pump. Modern heat pump technology will provide heat even when the outdoor temperature drops down to -13° F and the unit is already providing toasty warm air to our showroom. These hyper-efficient appliances also provide cooling in summer, enabling us to stop using an old central air system. Below is heat pump specialist Joe Maisonave in the midst of finishing the installation:
Mini-splits are among the most efficient forms of electric heating and cooling, providing 2-3 units of hot or cold for each unit of electricity they consume (a “COP” of 2-3). Below is a photo of the indoor blower unit that delivers heating or cooling depending on the season:
Our 7,000 sq. ft warehouse in New Hampshire already has solar hot water and is heated with a modern, fully automated pellet boiler. This month we added an efficient Plug-in Hybrid Prius, an awning-mounted solar electric array and an electric vehicle charging station.
In three days, while juggling other jobs, our installers mounted the 13 collectors (3.2kw total), powered by a single string inverter.
Below is a shot of Brian, Chris, and Chris of our Exeter office as they fasten the array to the side of our warehouse:
And here’s a photo of the final installation: