From: Social life-cycle assessment (S-LCA) of residential rooftop solar panels using challenge-derived framework
PSIA value
Value
Level of compliance with PRP
 + 2
1
Ideal performance
 + 1
0.75
Progress beyond compliance
0
0.50
Compliance with PRP
− 1
0.25
Non-compliant to PRP but improving
− 2
Non-compliant and no signs of improving