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Year 7 is an educational year group in schools in many countries including England, Wales, Australia and New Zealand. It is the seventh full year (or eighth in Australia and England) of compulsory education and is roughly equivalent to grade 6 in the United States and Canada (or to grade 7 for the Australian Year 7). Children in this year are ...
The National Renewable Energy Laboratory projects that the levelized cost of wind power will decline about 25% from 2012 to 2030. [16] In fiscal year 2020, congressional appropriations for the Department of Energy contained $464.3 million for NREL. This total included the following amounts for its renewable energy technology programs: [17]
From December 2006, a quarter-scale version of the OE12 was tested at the Ocean Energy Test Site in Galway Bay, near Spiddal. [4] It was moored on site on Christmas day, and survived waves of up to 8.2 metres (27 ft) during a force 11 storm on New Year's Eve. [2]
Energy Star 5.0 became effective on July 1, 2009. [20] Energy Star 6.1 became effective on September 10, 2014. Energy Star 7.1 became effective on November 16, 2018. [21] The Version 8.0 specification for computers was finalized on October 15, 2019 and became effective on October 15, 2020. [22]
A 2015 review assessed the energy payback time and EROI of solar photovoltaics. In this meta study, which uses an insolation of 1,700 kWh/m 2 /year and a system lifetime of 30 years, mean harmonized EROIs between 8.7 and 34.2 were found. Mean harmonized energy payback time varied from 1.0 to 4.1 years. [35]
80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.
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