'power usage' is correct and can be used in written English.
For example, you could use it in the sentence: "We must reduce our power usage in order to lower our carbon footprint."
▶ Install voltage reduction device to cut power usage.
In emergencies, Con Ed has the authority to demand that some businesses reduce their power usage.
The traditional measure of data center efficiency is power usage effectiveness, or P.U.E.
It would be something if it also reshaped our power usage for the better.
Power usage is high, though, and it doesn't come with an HDMI cable.
Nobody can stop consumers from giving data about their power usage to non-utilities, for instance.
However, when you hear that power usage, train freight and property markets are showing signs of improvement, domestic traders listen".
Power usage in the city for the day was the third highest on record, the utility said.
The company's computers monitor power usage and can control when certain appliances are switched on or off.
The Public Art Fund is working in close collaboration with Consolidated Edison, which monitors power usage in the city.
"We needed a way — how can we save the most money on our power usage?" Igdalsky said.
