I don’t have numbers for brown rice, but when I cook 1c of dry white rice I see
- rice cooker: 226Wh
- 3qt instant pot: 90Wh
The IP also requires less water. Both the energy and water consumption are important in my case because I live in a campervan offgrid.
The IP has decent insulation and doesn’t have to vent pressure to regulate temperature. I think there would be a measurable difference. I don’t have an induction-friendly pressure cooker to test the idea, but it’s interesting to think about.