amp
analog
bill
charge
circle
circuit
cover
current
device
dial
display
electric
electricity
energy
gage
glass
green
grid
industrial
instrument
isolate
isolated
kilowatt
measure
measurement
meter
monitor
needle
numbers
power
price
rate
readings
readout
round
save
scale
scientific
spin
technology
test
tool
volt
voltage
voltmeter
watt
wattage
white