One caveat: Toto toilets waste stupid amounts of power. With the heater off, I measure 40-50W at idle across multiple different models. With a heated seat that’s active or with the water heater on, it’s much higher. (A lot of Toto models have a small tank that is kept hot — only the higher end models have an on-demand flow tankless heater.)
Just tested this out and mine uses 6w at idle. This is with the seat heater and water heater turned on - but given that it's June there probably isn't much heating needed to bring them up to comfortable temps.
For reference here is the model I have. I don’t remember the exact price, but I think it was a fairly mid-range model that cost less than ¥200,000 ($2,000) at the time.
Edit: just had a look at current prices, and it looks like the MSRP for the same model is about 3x more expensive in the US than Japan. For example, the Neorest RS1 has a list price of ¥317,000 ($2,200) in Japan vs $6,315 in the US. So possibly a midrange model in Japan could be considered high end in the US.
You’ll either need a remarkably good in-brain integrator or something that measures energy instead of power. The data is noisy.
I just pulled the data from a US model Neorest, and I see a bit over 600Wh in a day. So better than 40W, but not amazing. It does drop below 1W for short periods, so it’s not actually the electronics wasting power at idle.
