I did change it. Some things were incremental (bomber air sealing and insulation) and some were quantum leapy (house wide heat recovery ventilation with smoke and particulate filtering, which was necessitated by the incremental advances).

The other quantum leaps are multiple electrical appliances participating in demand response programs that are helping to balance the electric grid from the demand side.

What I wish I could do (constrained by space, finances, or technology)

- Geothermal heat pump

- Vertical modularity

- Neighborhood microgrid

- Rainwater capture