well thats it, page-4

Been out of cfu for a long time, realised that they didn't seem to have a unit cost reduction strategy that would work, but have still followed. The ''powerwall'' could actually be a saviour as it is designed for temporary load interruption and buffering, not for continual discharge/recharge cycling, a perfect fit for a small but continuous in house generator.
Still don't think it will save cfu but it could be positive (Tesla buy Cfu tech? wishful thinking.)