Matching surplus solar to hot water or other loads

what technologies have you come across that can help households use their surplus solar? Here’s one to get us started: https://www.catchpower.com.au/

Solar for Apartments Slightly different. This is the technology you need if you are going to split solar in apartments between all the apartments. I haven’t worked out the technical trick behind that btw but a number of projects claim to have used allume so we could find out

https://beatenergy.com.au/ again - slightly different. The tech used by this retailer allows landlords to install solar and repay it using cheaper-but-not-zero pricing when the tenant is using solar energy. A gadget on the kitchen bench tells them what tariff they’re using. CORENA partnered with Anglicare to do 13 low income homes 50. Believe Housing Australia/Anglicare, SA - CORENA - Citizens' Own Renewable Energy Network Australia

https://village.energy/ found thanks to this hilarious story on one step off the grid (How my solar battery is battling coal on the open market – and the score so far - One Step Off The Grid)