On Tue, May 14, 2019 at 10:54 AM Nicklas Karlsson < nicklas.karlsso...@gmail.com> wrote:
> I have done calculations there storage cost for generated energy where > higher than buying new electricity. > I depends on if you have time of use metering. Here where I live the utilty price depends on the time of day. It used to be power was cheapest at night and highers in mid afternoon when all the airconditional loads were active. But solar power has changed this and now power is chear when the sun is out. Batteries if they are cheap enough like the Tesla units can ppay for them selfs if yo buy power when it is lowset and used it when the price is high. But you need very good quality batteries to break even. One interresting solution is to use an electric car. Let's say you know you nedd to drive to work in the moring. But "work" is only 20 miles round trip. You can get there on a 10% charge. So you charge the car durring the day and then use the car to power the house while beibg carfule to leave about 10% still inthe battery so you can get to work in the moring. This works if you already own an electric car. lastly, in 10 to 20 years there will be an over supply of used electric car batteries that are no longer suitable for use in tha car. A dozen of these used battries would be perfect for a house Tesla is selling 500K cars per year now and VW is building a factory to make 600K and Tesla is planning a second factory. We shall soon see over a million per years. Then in 10 years we will have that many old batteries to salvageevery year. They will be cheap Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
