Comments on: Preparing for a car-2-grid world http://www.cleanbreak.ca/2007/10/06/preparing-for-a-car-2-grid-world/ Trends, happenings and innovations in the clean technology market Mon, 30 Jan 2012 14:28:54 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Anonymous http://www.cleanbreak.ca/2007/10/06/preparing-for-a-car-2-grid-world/comment-page-1/#comment-1388 Anonymous Sat, 13 Oct 2007 15:33:00 +0000 http://www.cleanbreak.ca/2007/10/06/preparing-for-a-car-2-grid-world/#comment-1388 The idea of V2G seems compelling at first, but under closer scrutiny, the benefits do not seem to outweigh the problems. The real benefit is G2V. To sell the power back to the grid, the vehicle would bave to be plugged in somewhere. As most people drive their cars to work during the day, this would require a lot of new infrastructure. This infrastructure would not be justified unless it was used on a regular basis. Selling power back to the grid on a regular basis would reduce the batteries life due to the extra cycling. Additionally, if the grid companies are counting on these baqtteries for backup, what happens when everyone leaves work to go home? What is not onvious at first is that we don't need V2G, we only need G2V. By communicating real time pricing, customers can program their cars to charge at the least expensive time. This concept can be applied to any large cyclical load. For example, cold storage wharehouses can make ice at night, using it to provide the cooling during the day. This is the real potential of grid-vehicle/appliance communication. By smoothing out the load throughout the day, you won't need peak power generators. The idea of V2G seems compelling at first, but under closer scrutiny, the benefits do not seem to outweigh the problems. The real benefit is G2V. To sell the power back to the grid, the vehicle would bave to be plugged in somewhere. As most people drive their cars to work during the day, this would require a lot of new infrastructure. This infrastructure would not be justified unless it was used on a regular basis. Selling power back to the grid on a regular basis would reduce the batteries life due to the extra cycling. Additionally, if the grid companies are counting on these baqtteries for backup, what happens when everyone leaves work to go home?

What is not onvious at first is that we don’t need V2G, we only need G2V. By communicating real time pricing, customers can program their cars to charge at the least expensive time. This concept can be applied to any large cyclical load. For example, cold storage wharehouses can make ice at night, using it to provide the cooling during the day. This is the real potential of grid-vehicle/appliance communication. By smoothing out the load throughout the day, you won’t need peak power generators.

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