According to the International Energy Agency (IEA), buildings and the construction sector combined are responsible for nearly 40% of total direct and indirect CO2 emissions.
Emerging technologies are making it possible to mitigate that impact by turning buildings into power plants, a concept called building-integrated solar power (BIPV). Rack-mounted PV arrays on rooftops are the most common way to generate solar power on buildings, but this solution has some drawbacks.
Some consider rack-mounted PVs as eyesores, particularly when considered for historic buildings. This can be a barrier to wider adoption in urban architecture.
Other options including monocrystalline solar panels, dye-sensitized solar cells, and perovskites make it possible to alter the color of solar power generating cells. This makes them more attractive than conventional PVs and suitable for use on facades and walls. In some formulations, these materials can be made semi-transparent so that they can be used for fenestration.
Related Stories
| Dec 15, 2011
Dayton, Ohio schools saving $2.6 million annually by building to LEED
On average, green schools save about $100,000 a year on operating costs, including energy and water savings.
| Dec 15, 2011
Building to LEED standards can pose new risks for construction workers
Workers on these projects suffer a 24% increase in falls to lower levels during roof work, which researchers attributed to the installation of solar panels, and a few other risks.
| Dec 15, 2011
NRDC charges Maine governor with weakening green wood requirement
The FSC program is administered through the Leadership in Energy and Environmental Design (LEED) and requires wood to be harvested in a sustainable way.
| Dec 15, 2011
Post-tornado, Tuscaloosa seeks to create walkable urban, retail areas
Block sizes initially were limited to a maximum perimeter of 1,750 feet, with no side of the block being longer than 500 feet.
| Dec 15, 2011
Allentown, Pa. city council asked to repeal union-friendly law
The mayor of Allentown, Pa. asked the City Council to repeal a year-old ordinance that forces contractors to hire union workers for large city projects funded with state and federal dollars.
| Dec 13, 2011
LEED-EB outpaces LEED for new construction
The U.S. Green Building Council's (USGBC's) LEED certifications for existing buildings standard is outpacing LEED for new buildings for the first time.
| Dec 13, 2011
Regulators charge pervasive abuse of construction workers in Connecticut
Federal and state regulators say they have uncovered what they call "widespread noncompliance" with minimum wage and overtime laws in Connecticut's construction industry.
| Dec 13, 2011
Philadelphia mayor signs order for project labor agreements
Philadelphia Mayor Michael Nutter signed an executive order establishing project labor agreements for major public works projects in Philadelphia.
| Dec 13, 2011
Improved code requirements for attic ventilation
The Roof Assembly Ventilation Coalition (RAVC) participated in the development of the code.
| Dec 12, 2011
LEED-EB Outpaces LEED for New Construction
The U.S. Green Building Council’s (USGBC’s) LEED certifications for existing buildings standard is outpacing LEED for new buildings for the first time.
