amount
amp
billing
budget
business
consume
consumption
cost
counter
efficiency
efficient
electric
electricity
energy
expensive
gage
hard disk
high
home
hour
hours
house
industrial
industry
kilowatt
kwh
lower
measurement
meter
metering
money
office
pay
payment
power
reduced
reducing
reminder
residential
save
saving
solar cell
supply
system
technology
usage
use
utility
voltage
wattage