they are billions trainer 0.8.1 full version

And we all know the story of the great bubble that's bursting out right now. The difficulty of the problem is evident if we consider what happened during the past decade, when the 'financial system' poured gigantic amounts of money into the shale gas and oil industry. Why Joe The Plumber Doesn't Want Renewable Energy And I was surprised by the remarkable optimism that resulted from the poll But some 70 people responded out of a total of 167 members so I think these results have a certain value in telling us how the experts feel in this field. It was a very informal poll not meant to have statistical value. I am reporting here the results of a small survey that I carried out last week among the members of a discussion forum mainly experts in renewable energy. Here, he intervenes in the recent debate on the EROI of photovoltaic systemsĪ 100% Renewable World Is Possible? A Poll Among Experts He is now emeritus and still active in research among other things as chief editor of the new Springer journal: 'Biophysical Economics and Resource Quality, BERQ. The Real EROI Of Photovoltaic Systems: Professor Charles Hall Weighs InĬharles Hall is known for his multiple and important contributions in the field of sustainability, and in particular for having introduced the concept of Energy Return on Energy Investment, EROI or EROEI. As it turns out, a closer look at this single figure is enough to disprove the hypothesis of PV being an energy sink in Switzerland However, from this study a number immediately stands out: average lifetime energy yield of 106 kWh/m2/a.

Such a figure naturally made the delight of those campaigning against renewable energy, who take at face value any hints of negative performance. The end result is a remarkably low figure of 0.8:1, well below any EROEI assessments ever conducted on this energy technology. Photo-Voltaics Is Not An Energy Sink In SwitzerlandĮnergy Policy recently published a study conducted on the EROEI of Photo-Voltaics (PV) technologies installed in Switzerland.

They are billions trainer 0.8.1 full version