On September 30th, the
delegation went to visit the offices of the Epsten Group, a multidisciplinary
architectural firm based in Atlanta, which focuses on commissioning and
offering consulting advice on sustainable building design.
Even before
being introduced to the company's work, the group's offices made their mission
clear: Being located in a previously economically deprived area just outside of
downtown Atlanta, the group chose to remodel an old workshop and reuse old
building materials in order to reduce waste and achieve LEED platinum
certification for their office, which opened in 2011. As the old roof could not
handle the weight of a typical installation of PV panels, the company
ingeniously decided to go with 5kW of flexible and lightweight solar panels
that could directly be attached to the roof without the need of a heavy
installation rack.
Dagmar Epsten
herself, who founded the Group in 1991, gave us a presentation on her lifelong
mission to make commercial buildings more sustainable. A German expat, she
moved to the US after her diploma in order to use her architectural abilities
in Atlanta and the Southeast. Since then, the group has been commissioning new
buildings as well as retrofitting existing ones. Being involved from early-on
in the planning process allows the group to take a holistic approach to
planning, not only designing a sustainable building on paper, but also making
sure that the building structure is actually built and used accordingly.
Furthermore, Epsten Group has been particular active in evaluating and granting
LEED certification to commercial building owners, a market that shows strong
growth in the US. Being able to certify a buildings sustainable merits has
become a competitive advantage in assuring real estate developers and future
owners that a building is cheap to maintain and manage. This, in turn, can help
achieve a higher selling price on the market. In Germany, where state-set
buildings standards on efficiency are stricter, LEED has not taken up as much
for commercial development, but particularly international real estate
companies like to also rely on LEED certification in Germany, China and around
the world, as it has become a universal selling point.
As LEED is
primarily catering to commercial housing, we also talked with Epsten Group
employees on the different approaches that are being taking towards building
sustainable residential homes on both sides of the Atlantic. Here, a number of
differences emerged: Germans move less often from one place to another and have
a stronger culture of being personally involved in the planning of residential
housing. Therefore, they often personally ensure that their house is energy
efficient and overall sustainable, which also saves them cost of operation in
the long-term. In the United States on the other hand, housing is often
developed by professional developers who are in a competition to offer the
lowest price per developed square-feet - a competition, that can sometime go at
the expense of sustainability and energy-efficiency concerns. This is further
accelerated by low energy prices, which allow efficiency concerns to take the
backseat in comparison to other considerations. Furthermore, differences in
building usage were discussed that have strong effects on the overall sustainability
of buildings: Whereas Germans like to be in control of their flat or house and
open windows regularly to let in fresh air (which is more doable in Germany,
where temperatures are more moderate than in Atlanta), Americans prefer managed
environments with included ventilation and air-conditioning that also take
indoor air quality in account.
In consequence,
developing sustainable buildings needs more than just using the latest
energy-efficient technology, it also means taking the future end-users
behaviour and building cultures into account. Our visit at Epsten Group gave us
a great impression on the intercontinental differences and communalities in
building development. Dagmar Epsten herself, being a translator between these
different cultures, was the perfect host to explain those different approaches
to us. Thank you for the fascinating insights!