better understanding the LSM's

here's a LSM Calculator

most of the points come from electrical appliances
and other energy consuming devices, although
for instance 'heated water' could be 'solar heated'
and cars could be efficient or gas guzzlers.

I ranked high 10 and I use public transport
many of my friends who sit in about the same
category do too, so i don't know if LSM is
really the defining factor in our target market