Ben, After 10 years of daily full-cycling, I am presuming that the value of the pack and the 10-year old electronics is approaching zero, so you have invested $10k upfront and after 10 years you have accumulated almost $10k of savings.... If that were my 401k, I would simply put my money into something else.
Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: Ben Goren [mailto:[email protected]] Sent: Monday, May 04, 2015 4:26 PM To: Cor van de Water; Electric Vehicle Discussion List Subject: Re: [EVDL] virtual power plant On May 4, 2015, at 4:15 PM, Cor van de Water via EV <[email protected]> wrote: > Again, the most optimal case would be that you can shift the full > 10kWh each day, which would yield $2.60 per day or $950 per year. > In 10 years that would give you $9,500 which is about the money you > invested in a 10kW system, 10 years earlier so this would give you a > zero-percent investment with risks. Not good. Actually...a ten-year payoff is about a 7% annual rate of return, which is really rather good. https://en.wikipedia.org/wiki/Rule_of_72 A ten-year payoff means that you've doubled your money over the course of ten years. 70 / 10 = 7%. (That of course assumes the battery is still worth $10K at the end, and so on. I've still found the Rule of 70 to be a rather useful tool for doing this kind of financial analysis...anything with a ten-year or better payoff is almost always something you should seriously consider leaping at, if you've got the capital to spare. You'll have less money in your pocket, yes, but your expenses will be dramatically lowered giving you a lot more financial flexibility and security.) b& _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
