Here are a few of the figures. (A picture's worth 1,000 words and all that...) Follow the link for the entire report.
http://pubs.acs.org/cgi-bin/sample.cgi/esthag/asap/html/es071763q.html...
Figure 2. Life-cycle emissions from silicon and CdTe PV modules. BOS is the Balance of System (i.e., module supports, cabling, and power conditioning). Conditions: ground-mounted systems, Southern European insolation, 1700 kWh/m2/yr, performance ratio of 0.8, and lifetime of 30 years. Case 1: current electricity mixture in Si production−CrystalClear project and Ecoinvent database. Case 2: Union of the Co-ordination of Transmission of Electricity (UCTE) grid mixture and Ecoinvent database. Case 3: U.S. grid mixture and Franklin database.
Copyright © 2008 American Chemical Society
Figure 3. Life-cycle atmospheric Cd emissions for PV systems from electricity and fuel consumption, normalized for a Southern Europe average insolation of 1700 kWh/m2/yr, performance ratio of 0.8, and lifetime of 30 yrs. Ground-mounted BOS (
18) is assumed for all PV systems; comparisons with other electricity generation options.
Copyright © 2008 American Chemical Society
Figure 4. Life-cycle atmospheric heavy-metal emissions for PV systems (normalized for Southern European average insolation of 1700 kWh/m2/yr, performance ratio of 0.8, and lifetime of 30 yrs). Each PV system is assumed to include a ground-mounted BOS as described by Mason et al. (
18). The four types of PV modules and corresponding efficiencies are ribbon-Si 11.5%, multi-crystalline Si 13.2%, monocrystalline 14%, and CdTe 9%.
Copyright © 2008 American Chemical Society
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