Does anyone have input on an electric on-demand water heater vs. an electric tank water heater?

This is for a small 800sqft house we are building.

We will eventually hopefully go to solar supplemented water heating, so wanting to stay electric. Also, no access to natural gas and don't like the idea of propane which is fossil fuel, anyways. Some details:

1. live in Seattle area, so going with electric hot water since almost all of energy is hydro or wind, i.e., no fossil fuels

2. hot water use

2.1. daily shower: one shower with 1.5gpm showerhead to run 6 to 12 min; usually 6 to 8 minutes, but 12 to accommodate guests

2.2. daily wash dishes: 1 to 2 gallons of lukewarm water

2.3. grooming: we have non-electric on-use "toggle" devices, so barely any water for brushing teeth, hand washing, etc. MAYBE 1 gallon a day?

2.4. clothes washer: 1 load every other day; about 10 gallons per load on "warm" setting (it's a 24" wide Miele front load)

If on-demand, any experience with Stiebel Eltron (avoiding any made in China items)?

If tank, any recommendations on made in USA or European tank water heaters? HTP water heaters? Not sure about HTP since smallest is 40gallon tank.
Thanks!

John

Marathon by Rheem

Were it that we could all dam up a river and shun fossil fuels!

Sounds like your electrical infrastructure requirements would go up 2 or 3 fold with on demand electric. I'd go with a small electric storage unit.

I faced this choice when I built three years ago and went with a Marathon tank and have been pleased. The on-demand electric tankless units draw too many amps. They shouldn't really be compared to a gas tankless unit.

With a no-fossil-fuel-house in a heating dominated (but quite temperate) climate, how do you intend to heat the place? Your space heating choices may make a difference on what makes sense for heating hot water.

Solar thermal is pretty expensive in a Seattle climate- for the money & maintenance you may get a better R.O.I. with a heat pump water heater and a PV array, depending on how much subsidy (if any) you get locally for each.

We just built a house in Seattle area and used Stiebel for whole house water heating. If I remember correctly, it requires 60 amp. We have two 200 amp panels.
It takes a while to get use to tankless water heater. You need enough flow to trigger the unit and it takes about 10 seconds to get hot water. We haven't run into problem with multiple users. Our house is not big - 1500 sf with two baths (only one finished now).
It does DRAW power. You can see the lights dim when the unit turns on. But light also dims when my husband turn on power tools, or even shop vac.
Most of the tankless WH we have seen are gas or propane. We don't have gas service and have no space for propane, either.