Phoned around a lot today and it seems you can't get the Tesla Powerwall from any local supplier without the SolarEdge inverter. Also has to be installed by Tesla Powerwall/SolarEdge certified team. The 5kW SolarEdge + Tesla Powerwall will set you back R116k, taking the SolarEdge at R42k, the Tesla is R74k...so not quite R100 Mike. If the exchange was better, this would be a no brainer for me...but the price at the moment is the prohibiting factor, maybe at R10 a dollar it would make some sense...