paper presented at the piu manzu center rimini in workshop 3 mankind on a hot tin roof kyoto heretics braving greenhouse effect of conference soul empire 28 30 october 2005 1 alternative world energy outlook possible path towards sustainable future dr werner zittel l b systemtechnik gmbh ottobrunn germany lbst de this talk sketches supply light foreseeable challenges and opportunities first shortcoming which is biannually published by international agency criticised deficits these reports are reason why more progressive approach scenarios needed an must address both as well promising pathways secondly i will briefly pinpoint discuss those non approaches represent today s commonviews community finally most important give you idea about potential relevant renewable scenario my goal to set your minds positive direction we need all our energies master coming