(Source: UNSW - The University of New South Wales) OPINION: The future of civilisation and much biodiversity hangs to a large degree on whether we can replace fossil fuels - coal, oil and gas - with clean, safe and affordable energy within several decades. The good news is that renewable energy technologies and energy efficiency measures have advanced with extraordinary speed over the past decade. Energy efficient buildings and appliances, solar hot water, on-shore wind, solar photovoltaic (PV) modules, concentrated solar thermal (CST) power with thermal storage and gas turbines burning a wide range of renewable liquid and gaseous fuels are commercially available on a large scale. The costs...
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