The power companies will always screw you over my mum has a 3kw system but is getting 84c and is always In credit.

  When we installed our system it was worked out on our average kilowatt usage + line charges etc and what size system we would need to cover everything.  

   So our 6kw system will hopefully cover out power bill and gas bill no matter what price the electricity goes to because we are covering the kw we use.  The price can go up but we still only use ---kw if price goes up we save more but still only use the same.

   So far they already owe us $300+ which is better than is owing them $700+ each quarter

not been a fan, sceptical of return on investment but could be wrong. How many kw can you use to break even on 6kw system?