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)
