| I think that B2G tech in a marina is a great idea. I could imagine a model that has some potential for my marina. My current marina has individual meters at each dock box. We pay the hefty commercial rate for power. I want to say 17 cents per kWH. We don't pay the utility company though. We pay the marina for power and they are the ones who pay the utility company bill. Suppose we have a little grid tied inverter which dumps power into the marina's power grid only when your own personal battery bank is topped off. This will simply result in your own meter spinning backwards for a while, and if you do put in more power than you take, the marina just knocks that off your berthing bill. We already have a person at our marina that goes and checks each meter every month. I don't see this as being a big change in their routine. Just a little subtraction from the monthly bill instead of addition. I don't think that any battery cycling is needed because it is doubtful that at any time the marina will be on the whole returning energy to the grid. On the final balance sheet it will be like selling power to your more power hungry neighbor. There are several boats in my marina which can probably top off their battery banks from dead in one or two two days from solar and wind. If you go out sailing twice a month during the sailing season and drain your batteries completely that gives a lot of days at the dock to pump a little juice back into the grid. I am for any strategy which makes energy production and management more "free market". For the most part we rely on a state run utility of some sort. Kevin P. makes good practical points about focusing on "common sense" strategies for outfitting an e-boat or dealing with any boat for that matter. Usually less is more. Alas, I am one of those suckers who works on the boat more than I sail it. I spend countless hours and chunks of paychecks on gizmos to try out on the boat, but I would probably make time and space for this one more gizmo. By the way, my marina is applying for some kind of "green marina certification" I think there is probably a state subsidy behind this so they may have motivation. Hans --- On Tue, 3/2/10, Kevin Pemberton <pembertonkevin@
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