How Would You Make Buildings Better Idea.

Sometime in the future....."I live in a retrofitted old building in the inner city which can effectively operate off grid. The hydroelectric plumbing captures the potential energy stored in shower heads, kitchen sinks and bathroom systems to generate power. The heating system uses nearby waste heat from industrial processes. Incinerators, smelters, large ovens and nuclear waste heat water which is pumped through the buildings existing boiler system. My daily exercise regime involves charging my phone and other electronic devices from my exercise bike. I collect herbs from my window box garden which also generates electricity using green wall and semi transparent solar panel technology in the same way as the original prototype at the Cambridge Botanic gardens. These herbs are added to stews boiling on my biogas powered stove uses biogas from the nearest sewage treatment plant."