From Boston to Austin real estate there’s a new trend.  Rooftop gardens, or green roofs, are popping up everywhere. These gardens add life and color to gloomy, industrial looking cities and drab roofs.

Rooftop gardens improve air quality, create local food sources, delay water runoff, and bring color to a dull roof.  They also help insulate buildings and reduce electricity and gas costs, which is  particularly beneficial for people who live in very hot or cold areas. According to GreenRoofs.com, green roofs allow buildings to retain 30% more heat in the winter than ordinary roofs. Green roofs also reflect light and heat, which may help buildings stay cooler in the summer. The insulation from rooftop gardens also helps block out noises from outside.

There are many different kinds of green… [view entry]

Residents of Cambridge, MA were introduced to a new opportunity on February 8th, 2011. Energy efficiency is on the minds of renters, condominium owners, and homeowners alike as the environmental, financial, and physical benefits become more prominently appreciated. Usually when energy efficiency information is available, it is more general and further discussion with specific professionals is suggested, since the process of making home energy efficiency improvements is tailored to unique home and ownership characteristics and often entails several detailed levels of complexity. On February 8th, those professionals were brought together in one place for an evening of sequential enlightenment for curious attendees, with an added bonus of networking amongst their industry peers and less-assumed partners, Green real estate agents.

When the Cambridge Energy Alliance and Coldwell Banker Agents Amy Tighe and Robin… [view entry]

Retrofit Revolutionaries! by Peter Papesch, AIA

The Commonwealth Challenge is a campaign to collectively save 100,000 kWh of electricity by Earth Day, April 22. Free air sealing for basements or attics is one of the benefits of participating in this campaign to retrofit homes and address poverty and climate change throughout Massachusetts. The campaign has a goal for residents of all income levels to cut their electrical usage by 5 percent, while saving money, reducing pollution, and creating good local jobs.

The participants can:

Sign up for a free home energy screening
Retrofit their home at a group discount (20 partnered organizations across the state are giving discounted and free home insulation services to all participants)
Track and compare their energy use with neighbors, see also

… [view entry]

Eleven Cambridge companies were certified as “Sustainable Business Leaders” on Thursday April 1, 2010, for completing the Sustainable Business Leader Program (SBLP)—a program of the Sustainable Business Network (SBN) that provides guidance, support and technical assistance to facilitate the “greening” of small and medium-sized businesses. The special certification ceremony, which was held at the Cambridge City Hall Annex, was co-sponsored by the City of Cambridge, Cambridge Local First and the Cambridge Energy Alliance in partnership with the Sustainable Business Network.

The first Cambridge graduating class included:

Cambridge Naturals, 1369 Coffee House, Veggie Planet, Stone Hearth Pizza, Irving House, Greenward, Harvest Co-Op Markets, Harvard Bookstore, The Fishmonger, Cambridge Brewing Company and Economy Hardware.

Graduates earned their SBLP… [view entry]

If any of our readers have the opportunity to build on a vacant lot, we recommend they visit this page at the Jetson Green website.

This week, they are featuring a story on David Schmit, a Minneapolis photographer who decided he wanted a home in the suburbs with the design features of his downtown rental loft. After some investigation Schmit found a company called Hive Modular that supplies prefab homes. Actually prefab home parts which are then shipped, assembled and fitted out on site.

If you’re thinking trailer home, make sure you scroll down to view some of the interior shots of Schmit’s home after it was finished and furnished.

If you want to read the whole story behind the approval, construction and siting of the house, visit… [view entry]

A company in Western Kentucky has built more than 40 structures, including eight schools, using an innovative construction method called Insulated Concrete Forms. ICF consists of four-inch Styrofoam blocks reinforced by a rebar grid into which concrete is poured. The foam provides insulation while the concrete offers strength and durability.

President Larry Graves says the original ICF “test project” was his own home, built with Insulated Concrete Forms in 2003; “The initial investment costs up to 8 percent more than traditional building methods,  but I made my money back in savings within the first two years.”

Gravesco is the exclusive provider of this building technology which, according to Graves, results in utility bills 50% lower than those generated by a traditionally constructed house; “Regardless of how hot or… [view entry]

Dow Corning, the largest maker of residential insulation in the US, can expect their economic recovery to start ahead of time due to the tax rebates and incentives for housing weatherization included within the American Recovery and Reinvestment Act signed into law by President Obama last month.

“The weatherization program is the sort of activity that is likely to spur demand,” said Owens Corning spokesman Scott Deitz. “No doubt, people will install insulation because of this program. We just don’t know how many.”

This could also boost employment at Dow Cornings’ largest US insulation manufacturing plant in Newark, which has lost over 700 jobs… [view entry]

Last week, we showed you how a local Cambridge organization (HEET–Home Energy Efficiency Team) ‘weatherizes’ a house for fellow Cambridge residents.  Weatherizing a house involves making some basic non-structural changes to a house to reduce the energy needed for heating and cooling and save money on utilities. The homeowner supplies all the materials and HEET provides the knowledge and manpower needed to finish all energy efficiency improvements in a single day.

It’s a great community activity and a fantastic way to meet your fellow Cambridge residents while learning from skilled tradesmen how you can make your own home more energy efficient. And there is always a party to celebrate the completion of another successful Weatherization Barnraising.

The next HEET Weatherization Barnraising is scheduled for Sunday, March 1 between 12:30—5… [view entry]

You may remember the scene from the 1985 movie Witness starring Harrison Ford. A group of Amish people converge on a neighbor’s property and assemble a barn in a single montage, a single day. A Cambridge-based co-op  HEET (for Home Energy Efficiency Team) does weatherization work that’s less lofty, but arguably more important to the modern world. It’s a model for what can be done by harnessing the power of progressive community which emerged during the Obama campaign.

As Bob the Builder might say, ‘Can We Caulk it? Yes we can!’

Combining the materials purchased by the homeowner with free knowhow and labor from HEET, the team has weatherized several low-income  homes in Cambridge, with the goal of performing a barn-raising per month. As they do so, they transfer the… [view entry]

This weekend, Energy 2.0 received a message from Lands’ End specifically targeting everyone shivering their way through winter here in Massachusetts.

You know it’s cold when folks from Wisconsin are sending you winter sympathy messages via email. Beyond how cold it might be outside, the recent patch of artic weather here in Cambridge has resulted in lots of time spent inside for most residents. For Energy 2.0, that also means plenty of time to ponder why the ground floor of the house is always colder than the floors above.

A quick search around the Internet revealed a wealth of information on how most houses–particularly those built before the 1970s–don’t have properly insulated crawlspaces.

So if your bottom floor feels like a skating rink, find out why crawl space vapor… [view entry]