The Gasometer

The Gasometer is one of several unusual structures that I have glimpsed repeatedly over the years while biking through Berlin.

the Gasometer

the Gasometer

Like the spherical water tower in Park Gleisdreieck, reminiscent of a WWI-era pickelhaube helmet,

water tower at Gleisdreieck

water tower at Gleisdreieck

Prussian Pickelhaube helmet

Prussian Pickelhaube helmet

and the giant pink pipe at the west end of the Tiergarten,

pink pipe in Tiergarten

pink pipe in Tiergarten

I have wondered about the Gasometer’s history, use, and future.  Last Friday my questions were answered when Annette, her cousin Katrin and I climbed 420 steps to the top of the 80 meter tall structure. Continue reading

Feldheim, an Energy Self-Sufficient Community

A version of this post appears at GreenBuildingAdvisor.com.

entrance to Feldheim

entrance to Feldheim

From a distance, Feldheim looks like many other rural villages in Germany: a cluster of buildings surrounded by farmland and forests.   The backdrop includes numerous wind turbines, but that’s not unusual in Germany’s breezy north.  What is unusual is that there are two signs welcoming visitors to Feldheim: the typical yellow sign that is found at the edge of every village, and another in blue and white announcing that Feldheim is an “Energieautarker Ortsteil,” or an energy self-sufficient district.  In 2010, Feldheim became one of the first villages in Germany to supply all of its own electricity and heat.

I visited Feldheim twice recently.  During my first visit I met with Michael Knape, the mayor of Treuenbrietzen, the adjacent town to which Feldheim belongs.  I had seen Mr. Knape give a presentation about Feldheim at a bioenergy village conference in Berlin, and I was eager to follow up with him.  He suggested that we meet “at the construction site” in Feldheim.  When I asked which one, he sounded surprised: “There’s only one.”

Finding the jobsite was not difficult.  Feldheim has just one main street, and most of the village’s homes are on it.  I pulled up to a two story building wrapped in scaffolding. Several masons were repointing brick and reproducing masonry moldings on the front of the building, while at the gable end, another crew was installing batts of mineral wool insulation on the walls.  A large sign out front announced the Neue-Energien-Forum Feldheim, or “New Energy Forum Feldheim.”   I noticed an electric vehicle charging station adjacent to the building.

New Energy Forum Feldheim

New Energy Forum Feldheim

As Mr. Knape and I settled into a temporary conference room that had been set up on site, I asked him “Why Feldheim? Why here?”

“In the early 1990s, ” he told me, “a graduate student named Michael Raschemann visited the village while looking for a location to install four wind turbines.”  The conditions in Feldheim seemed promising because the area is windy, and the land surrounding the village is relatively flat.  In his subsequent discussions with the villagers, Mr. Raschemann proved adept at addressing the villagers’ concerns and winning their trust.  He even offered local residents the opportunity to invest in one of the four wind turbines — a wise investment, as it turned out.  The story of Feldheim becoming energy self-sufficient is largely about the successful public-private partnership between Energiequelle, the company that Mr. Raschemann founded, and the village of Feldheim. Continue reading

Germany’s Bioenergy Villages

Note: this article was originally written for GreenBuildingAdvisor.com.

The notion that a village can produce as much energy as it consumes is not new in Germany, nor is it exclusive to this country that has set aggressive targets for renewable energy use. In the mid-1990s, for example, the Austrian village of Güssing began implementing strategies to use local biomass to produce electricity and heat, and the Danish island community of Samsø installed wind turbines to meet its electrical needs.

Biogas plant, wood chip boiler and PV array in bioenergy village Mauenheim

Biogas plant, wood chip boiler and PV array in bioenergy village Mauenheim

In recent years, however, the idea of Bioenergiedörfer, or “bioenergy villages,” seems to have captured the public imagination in Germany. Last month I attended a conference called “Bioenergy Villages 2014” that provided a great overview of the bioenergy village movement in Germany.

Continue reading

BauTec 2014

[A version of this article was also posted at GreenBuildingAdvisor.com].

BauTec 2014

BauTec 2014

I recently attended BauTec, a trade fair for the construction industry that is held annually in Berlin. According to the show’s marketers, BauTec is “the year’s most important trade industry event.” I found the show to be impressive, inspiring and overwhelming.  Each of ten large halls at Berlin’s International Conference Center was filled with exhibits and booths dedicated to a different segment of the construction industry: Windows/Doors/Glazing, Plumbing/Heating/Cooling, etc.  I ended up visiting the show on three different days to attend seminars being held in tandem with the trade show, and to walk the trade show floor.   Continue reading

Energetische Sanierung

[A version of this post was published at GreenBuildingAdvisor.com on 7Jan14]

I don’t know whether there are any building geeks reading this blog, but if so, here’s a post for them.  I am including more photos of insulation details than a normal person would find interesting.

2 stuccoed facadeA few weeks ago while biking back from a visit to Rani’s high school, I stopped at a job site that had previously caught my eye. Although the buildings were shrouded in the usual scaffolding and screening, I could tell that the work involved “energetische sanierung,” or energy retrofitting.

Two workers were installing rigid foam around newly-installed windows.  I asked if I could take some photos, explaining that I was a project manager from the US, and interested in energy efficiency.  As often happens in this situation, their initial reticence gave way to a quick tour of the work and informative answers to my questions.

While the materials and techniques used on this project are run-of-the-mill for Germany, and may be of limited applicability to projects in New England, I like to think that sharing them might contribute to innovative thinking in someone, somewhere.  The rest of this post contains photos and notes about the insulating skin being installed on the building.

Continue reading

New Hampshire Engineering

Segway wheelchair

Segway Rollstuhl

I was biking back from across town with a just-purchased used guitar under my arm when I saw this vehicle.  I stopped and did a double-take. Were there really just two wheels?  A Segway wheelchair?!

The man graciously agreed to my taking a photo of his rig.  We chatted.  He loves his Segway, because he is not able to use a regular wheelchair. Yes, it takes some getting used to, but it’s not too difficult.  He asked about the guitar.  I had found it on eBay.  He plays jazz keyboards with a friend who is a guitarist.

In the United States, German engineering is synonymous with quality.  One of my goals in coming to Germany is to learn more about energy efficient materials, systems and technologies that may be years ahead of what’s currently available in the US.  I was pleasantly surprised to find  here, in the form of an unusual wheelchair, a wonderful example of innovative engineering that originates in New Hampshire.  In 1999, inventor Dean Kamen founded the Segway Company, and subsequently built the company’s headquarters and manufacturing plant in Bedford, NH.