I'm now one step closer to going completely off grid, yesterday I planted a lemon tree.
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
Might be much cheaper and clean to get a lot of free energy from the sun at thermal solar than loose in conversion to battery packs like tesla wall, etc.
I invested in my a few kW CSP and I believe it will cost small percentage thatn this:
http://gizmodo.com/australia-is-the-first-country-to-get-teslas-powerwall-1731786085
They wrote on this page:
It can also allow users to utilise their own stored power at night, rather than losing out with the current electricity rates and feed-in-tariff system.
Yep, do not loose out with the current electricity rates, but loose $es to Tesla
![Blah :blah:](https://www.eevblog.com/forum/Smileys/default/blah.gif.pagespeed.ce.iJS9qlFEPg.gif)
Anyway, I will run soon my few kW flywheel energy storage system and... it will be winner for me
![Popcorn :popcorn:](https://www.eevblog.com/forum/Smileys/default/EatingPopcorn.jpg.pagespeed.ce.yJ6TmC5fSa.jpg)
I need more and more high power multi phase synchronous rectifier drivers and I will manufacture soon them - not in China ... at home in Europe
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
BTW: What is estimated cost of this 7kW tesla wall and how long time it can keep at least 5kW with baterries degraded in time-just to estimate ROI?