The Economics of (and Threat to) Rooftop Solar in Southern ArizonaMay 11, 2015

Climate Roulette:Most recent IPCC report gives 50/50 chance of stabilizing climate impacts at 2

degrees warming if we eliminate carbon emissions by 2040

City of Tucson Carbon Emission Reduction Goals(being recommended by the City Climate Change committee)

Slide credit: John Farrell, Institute for Local Self Reliance, 2015

What emissions do we need to find solutions for?

Source: PAG Regional Greenhouse Gas Inventory 2014

Carbon Footprints of Energy Sources

Source: Wikipedia

Desert Adapted Energy Production

Source: Water for Energy: Future Water Needs for Electricity in the Intermountain West. Pacific Institute, November 2011

Tucson’s Cost of Solar PV

Maine Public Utilities Commission

Maine Distributed Solar Valuation StudyMarch 1, 2015

Renewable Energy Storage