HYDROGEN AND FUEL CELLS:
A COMPREHENSIVE SOLUTION IN THE FIGHT AGAINST GLOBAL WARMING
May 16, 2007
By John Shears Research Coordinator
Center for Energy Efficiency and Renewable Technologies (CEERT) rd 1100 Eleventh Street * 3 Floor * Sacramento CA 95814 * (916) 442‐7785 www.ceert.org
HYDROGEN AND FUEL CELLS: A COMPREHENSIVE SOLUTION IN THE FIGHT AGAINST GLOBAL WARMING
INTRODUCTION The world’s leading climate experts have now declared that human activities — predominantly due to our use of fossil fuels 1 — are unequivocally accelerating global warming. They also warn that, in order to avoid the most devastating consequences ...view middle of the document...
To help position hydrogen and fuel cells in the discussion, this discussionbrief provides an overview of some of the major approaches and the role that each can play in achieving maximum longterm GHG emissions reductions. OPTIONS TO REDUCE CARBON FOOTPRINT OF VEHICLES The diverse options being pursued to reduce GHGs from vehicles include low carbon biofuels; flexible fuel vehicles; compressed natural gas vehicles; hybrid electric vehicles (HEV); plugin hybrid electric vehicles (PHEV); allbattery electric vehicles (BEV or EV); and hydrogen fuel cell vehicles (FCV). Each has a role to play but only one appears poised to provide a comprehensive solution for the longterm stabilization and reduction of GHGs.
Modified From: Pacala,S. and R. Socolow, AUGUST 13, 2004. Stabilization Wedges: Solving the Climate Problem for the Next 50 Years with Current Technologies., Science Volume 305, pp 968972 (Part of the Special Section on the Hydrogen Economy).
Greenhouse Gas Emissions Wedges: A Slice of the Global Warming Pie.
(A) GHG emissions under business as usual (BAU – green area) are projected to double from 7 billion tons per year (GtC/y) today to 14 billion tons per year by midcentury. Climate scientists are urging that CO2 emissions must be stabilized if concentrations are not to exceed 500 ppm (blue area) in order to avoid dangerous climate change. (B) A schematic representation of (A). The increased emissions are represented as a triangle ...