Soldato
As long as you have a battery, a big enough array (at least 8kw), and you're avergae daily usage isn't too high (about 8kw), yes I think so, maybe even more than halved. November through to January were the worst months.Now is the perfect time to reap the rewards of solar panels but come winter time, can peoples bill be at least halved ?
Right now you can in theory live off the grid in the summer times..
As usual there are always a lot of variables.