In 1993, the company developed its own CPU Architecture, ETRAX CRIS, for microprocessors used in embedded devices. In 1991, Axis Communications introduced a multi-protocol print server supporting both TCP/IP and NetWare. We make recommendations to further improve the environmental impact profile of this turbine tree.Axis 5600/5800 Print Server was the type of product that made inroads to a strong expansion of Axis business in the 1990s and early 2000s. Location changes mitigated impacts most, followed by design, transportation, and then materials. Greenhouse gas and energy payback times were 28.61 and 54.77 years, and 6.50 and 12.50 years for Surat Thani and Chiang Mai, respectively, with only the Chiang Mai times being less than the turbine’s estimated lifetime. The tower and generator were majority contributors to impacts (average 69%). End-of-life treatments reduced impacts by an average of 11%. A total of 9 out of 11 impacts were less than the grid values at Chiang Mai, but at Surat Thani, 9 of 11 impacts were more than the grid values. The results showed that Chiang Mai had a C F = 7.58% and Surat Thani had a C F = 1.68%. The relative magnitudes of impacts were compared with environmental prices protocol, and we investigated reductions in impacts using three mitigative scenarios: changes to design, transportation and materials. Energy and greenhouse gas payback times were estimated for both locations. Impact profiles were calculated using wind data collected over two years at Surat Thani, and from wind data from a higher capacity factor ( C F) site at Chiang Mai, Thailand. Comparisons to the Thai grid mix were made, using both with and without end-of-life treatments. Situated at a test site in Surat Thani, Thailand, SimaPro software was used to evaluate the environmental impact profile of the tree. Are small-scale wind turbines green? In this study, we perform a ‘cradle to grave’ life cycle assessment of a novel domestic-scale 10 kW vertical axis wind turbine tree which uses combined Savonius and H-Darrieus blades.
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