A new report from the U.S. National Renewable Energy Laboratory (NREL) says PV module lifetime extensions should be prioritized over closed-loop recycling to reduce demand for new materials.
Researchers assessed the impact on new material demand with different module lifetimes from 15 to 50 years. They also examined closed-loop recycling, and assumed that the U.S. will have 1.75 terawatts of cumulative PV installed capacity by 2050.
Modules with 50-year lifetimes could reduce new material demand by 3% through lower deployment, compared to a 35-year baseline scenario. Fifteen-year modules would require an additional 1.2 TW of replacement modules, which would increase new material demand and waste unless over 95% of the module mass was closed-loop recycled.
To date, no PV technology has reached near the 95% level of closed-loop recycling for all component materials. Thus, manufacturing longer-lasting PVs is the more eco-friendly choice.
Related Stories
Sponsored | Green | Jan 26, 2015
Shopping centers set their sight on solar
As part of its pledge to environmentally sound practices, real estate investment trust Macerich is implementing solar across its portfolio of 85-plus properties in 19 states.
| Jan 21, 2015
Tesla Motors starts construction on $5 billion battery plant in Nevada
Tesla Motors’ “gigafactory,” a $5 billion project on 980 acres in Sparks, Nev., could annually produce enough power for 500,000 electric cars.
| Dec 29, 2014
Leo A Daly's minimally invasive approach to remote field site design [BD+C's 2014 Great Solutions Report]
For the past six years, Leo A Daly has been designing sites for remote field stations with near-zero ecological disturbance. The firm's environmentally delicate work was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 28, 2014
Using energy modeling to increase project value [AIA course]
This course, worth 1.0 AIA LU/HSW, explores how to increase project value through energy modeling, as well as how to conduct quick payback and net present value studies to identify which energy strategies are most viable for the project.
| Dec 23, 2014
5 tech trends transforming BIM/VDC
From energy modeling on the fly to prefabrication of building systems, these advancements are potential game changers for AEC firms that are serious about building information modeling.
| Dec 19, 2014
Zaha Hadid unveils dune-shaped HQ for Emirati environmental management company
Zaha Hadid Architects released designs for the new headquarters of Emirati environmental management company Bee’ah, revealing a structure that references the shape and motion of a sand dune.
| Dec 18, 2014
International Parking Institute and Green Parking Council collaborate with GBCI
The new collaboration recognizes importance of sustainable parking facility design and management to the built environment.
| Dec 17, 2014
USGBC announces 2014 Best of Green Schools honorees
Houston's Monarch School was named the K-12 school of the year, and Western Michigan University was honored as the top higher-ed institution, based on environmental programs and education efforts.
| Nov 25, 2014
Behnisch Architekten unveils design for energy-positive building in Boston
The multi-use building for Artists For Humanity that is slated to be the largest energy positive commercial building in New England.
| Nov 21, 2014
STEP Foundation, Green Building Initiative Team to Promote Building Sustainability
The STEP Foundation, a nonprofit organization dedicated to providing technology industry benchmarks for sustainability practices in the built environment, and the Green Building Initiative, a nonprofit organization committed to accelerating the adoption of sustainable building practices, have signed a Memorandum of Understanding.
