Our underused natural gas capacity could almost completely replace our current coal-generated energy, argues Sean Casten, President & CEO of Recycled Energy Development.
"Two interesting observations:
1. 50% of U.S. power generation (in MWh) comes from coal, while only 20% comes from natural gas.
2. 32% of total U.S. power generation capacity (in MW) is coal-fired, while 42% is gas-fired.
When it runs, the natural gas fleet emits just 50% of the CO2 of the coal fleet, which raises a rather interesting question: what would we have to do to make it run harder? And how big a difference would that make in our national CO2 footprint?
So why, if we have more natural gas generation capacity, do we get more of our power from coal?
Simple: we have a lot of gas-fired generation (449 GW, as of 2007), it doesn't run very often. The coal fleet is comparatively smaller (336 GW), but runs a lot more frequently. It is as if our vehicle fleet were dominated by Priuses, but they stayed parked while we drove our Escalades to work.
We have a huge resource that is already built that could massively lower CO2 emissions. Taking a page from the NRA, what if the problem isn't that we need to build more low-carbon generation, but that we just need to make better use of what we have?"
FULL STORY: How to shut down 93% of coal without building new plants or reducing power supply

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Appalachian Highlands Housing Partners
Gallatin County Department of Planning & Community Development
Heyer Gruel & Associates PA
Mpact (founded as Rail~Volution)
City of Camden Redevelopment Agency
City of Astoria
City of Portland
City of Laramie