"I tried adding solar to a house. Hands down the most difficult thing I’ve ever done
I volunteered to make an energy-efficient home for my darling grandchildren. What could go wrong"
Article isn't about solar as per the headlines. It is about home renovations and needing pole, switchboard and wire upgrades.
Picking a instantaneous electric Hot water isn't efficient. It requires large currents to heat the water, which would have been the reason for wiring upgrades
An electric instantaneous hot water normally requires 3 phase power as well as high currents. It is basically a kettle that boils in a few seconds.
Other options heatpump hotwater, where you are using heat from the surrounding air. You are just using electricity to pump the liquid around rather than heating, same as a fridge
Downside is might be a bit more plumbing to replace gas instant unit and needs more space.
Or evacuated tubes and use the sun to heat the water and store until needed.
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