Wind turbines on buildings could produce electricity where it's needed and catch high winds above ground level. However, wind turbulence, safety, cost, and poor performance all make building-integrated wind a limited strategy.
Integrated project delivery, or IPD, is a new contract mechanism for design and construction. Among its benefits for green building, it enshrines integrated design and building information modeling (BIM) into a legally supportive framework.
Everyone seems to be talking about measuring carbon footprints and designing carbon-neutral buildings, but these terms mean different things to different people. Some focus just on operating energy, while others also look at transportation, materials, and other building-related emissions. As with so many things, the results depend on what you count and how you count it.
Incorporating a continuous air barrier into a building's design and construction can save energy and improve the indoor environment, among other benefits. The right materials and assemblies can help accomplish that goal, but careful attention during design and close oversight during construction are essential.
Nanotechnology takes advantage of the novel properties that particles can exhibit at a billionth of a meter in size. Those properties are being used in building materials, where they can improve thermal performance and the effectiveness of photovoltaics, among many possibilities. The field has little regulation, however, despite significant health and environmental concerns.
Recent changes in the financial industry are providing new opportunities for financing green buildings. However, lenders and investors have different approaches to documenting the benefits of green, which affect how they use rating systems and other metrics. To navigate effectively in the financial world, green designers and builders need to understand the territory.
Very common in northern Europe, district energy systems use a network of buried, insulated pipes to distribute centrally produced steam, hot water, or chilled water to heat or cool multiple buildings. These systems can make use of waste heat from power generation (combined heat and power) or renewable fuel sources to help reduce the environmental impacts of buildings and communities.
With several announcements at the 2006 Greenbuild conference in Denver, the U.S. Green Building Council signaled that it would use its LEED Rating System to reduce greenhouse gas emissions, by tightening LEED requirements and by increasing the number of buildings designed to LEED standards.