(1/3) Loop 1.0 +Length 3
  conventional renovation no retrofit opportunity +>  unretrofitted buildings leaving good condition
  unretrofitted buildings leaving good condition +>  renovation
  renovation +>  conventional renovation no retrofit opportunity

(2/3) Loop 2.0 +Length 3
  conventional renovation retrofit opportunity loss +>  unretrofitted buildings leaving good condition
  unretrofitted buildings leaving good condition +>  renovation
  renovation +>  conventional renovation retrofit opportunity loss

(3/3) Loop 3.0 +Length 3
  energy retrofit +>  retrofitted buildings leaving good condition
  retrofitted buildings leaving good condition +>  renovation
  renovation +>  energy retrofit