The 10 Best Electricity Usage Monitors

Updated December 20, 2017 by Brett Dvoretz

10 Best Electricity Usage Monitors
Best High-End
Best Mid-Range
Best Inexpensive
If you know your watts from your amps and want to monitor and control the electricity consumption in your home or office, check out these electricity usage meters. They will give you all the data you need for an energy audit of individual devices or your whole house or business, so you can keep your power bill as low as possible and reduce your carbon footprint. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best electricity usage monitor on Amazon.

10. WiTenergy E100SG

The WiTenergy E100SG is a smart Bluetooth-enabled option that users can control using their Android or iOS smartphone or tablet via a free app. It has a handy overload alert feature that allows you to set energy usage limits so you know when you are using too much power.
  • auto-cutoff when usage is too high
  • can also be used as a timer
  • can't turn itself on after blackouts
Brand WiT
Model E100S
Weight 6.4 ounces
Rating 4.0 / 5.0

9. Floureon HP1101

The Floureon HP1101 is perfect if your're on a budget. All you have to do is plug it into the wall then plug your appliance into the unit and read the results. It can measure a variety of parameters, including kWh, amps, voltage and more.
  • backed by a one-year warranty
  • easy to move from device to device
  • lcd is a bit dim
Brand Floureon
Model pending
Weight 6.4 ounces
Rating 3.7 / 5.0

8. Eyedro EHWEM1

The Eyedro EHWEM1 allows you to monitor the cost of multiple appliances and get detailed reads and kilowatt clarity at any time via their free cloud-based web service. It is available in both a wireless and wired model to fit any need.
  • sensors install at the breaker
  • helps uncover your energy habits
  • app responsiveness is inconsistent
Brand Eyedro
Model EHWEM1
Weight 1.5 pounds
Rating 4.0 / 5.0

7. Ensupra PM002

The Ensupra PM002 will help you save money all around. It costs less than $20, making it a very affordable option, and accurately tracks energy consumption of a single device. In addition, it also shows how much CO2 was produced to create the amount of energy used.
  • shows kw hours and monetary cost
  • can set single and dual rate tariffs
  • short backup battery life
Brand Ensupra
Model PM002
Weight 3.2 ounces
Rating 4.0 / 5.0

6. Blue Line Innovations BLI 28000ER

Keep tabs on your electricity use with the Blue Line Innovations BLI 28000ER. It gathers its data directly from your home's electric meter so there is no question as to its accuracy. By alerting you to current usage, it makes it easier to cut back when possible.
  • takes less than 30 minutes to set up
  • sends data to receiver wirelessly
  • not compatible with all meters
Brand Blue Line Innovations
Model BLI-28000ER
Weight 2.3 pounds
Rating 4.4 / 5.0

5. Efergy Elite 4.0

The Efergy Elite 4.0 provides you with energy usage updates every 10 seconds, so you can see if it suddenly spikes and figure out the cause. It also displays a daily average of power use, which makes it easier to spot trends and adjust things as necessary.
  • measures whole house energy use
  • quickly clamps onto breaker cables
  • wireless connection can be spotty
Brand Efergy
Model Elite 2.0
Weight 1.6 pounds
Rating 3.9 / 5.0

4. P3 International Kill A Watt EZ

The P3 International Kill A Watt EZ counts consumption by the kilowatt-hour, just as the local utility company does, making it extremely accurate. At the touch of just a few buttons, you can calculate a device's daily, monthly, or yearly energy costs.
  • retains settings when unplugged
  • large easy to read lcd
  • setup is very simple
Brand P3
Model P4460
Weight 5.6 ounces
Rating 3.9 / 5.0

3. Owl CM160

The Owl CM160 is a wireless model that can be used anywhere in your home or business, and it acts in real time. It allows you to easily monitor and track your usage daily, monthly, and annually for numerous devices, and it can display 2 years of historical data.
  • shows the current temperature too
  • compact and unobtrusive design
  • intuitive interface
Brand Owl
Model TSE004-001
Weight 1.6 pounds
Rating 4.9 / 5.0

2. Belkin Conserve Insight

The Belkin Conserve Insight has a tracking feature that projects a device's energy usage into a dollar impact on your electric bill. This makes it easier to determine if something isn't energy efficient enough and would be better off replaced or turned off more regularly.
  • 6 foot cord for convenient reading
  • can set your electricity rate
  • estimates carbon emissions
Brand Belkin
Model F7C005Q
Weight 9.9 ounces
Rating 4.6 / 5.0

1. Energy Detective Pro

Perfect for the high tech consumer, the Energy Detective Pro allows for remote monitoring of your home's electricity usage via your smart device or computer. It's the ideal way to perform periodic energy audits to determine if you are being as efficient as possible.
  • shows real-time statistics
  • can monitor individual breakers
  • translates energy usage into dollars
Brand The Energy Detective
Model Pro Home
Weight 2.1 pounds
Rating 4.9 / 5.0

How Electricity Usage Monitors Work

Electricity usage monitors are a smart purchase for anyone who is looking to cut back on power consumption, whether for environmental or monetary purposes. These monitors can help one identify which devices are using up the most power. They also display the consumption in the same measurements the electricity company does, making it easy to predict the cost of future bill.

If using a lot of power is simply not an option, many models allow the user to set a kilowatt limit. When a device is getting near that limit, the monitor sounds an alarm so people in the house know to turn it off. Electricity usage monitors can show useful information like the total power consumed by a device per day, keeping track in real time, and resetting every 24 hours.

Many monitors can connect to several devices around your home, letting you navigate the control screen, checking on each one individually. People who travel a lot appreciate units that can be used remotely. Bluetooth compatible monitors not only allow the user to check on their in-home power use when they’re away, but also to turn on devices remotely.

Many monitors plug directly into a wall socket, so a person can easily use these in their home or office. Some let the user plug a device directly into them, to get an immediate, real-time read on that item’s power consumption. Advanced models have cloud computing technology that lets a person check on their home’s power consumption from any Internet-connected device, and save data for the user so they can track their habits.

Top Energy Wasting Habits

In addition to using an electricity monitor, there are a number of other habits one can adopt to conserve energy in their home. There are several things that can be done differently around the kitchen to save power, like deciding what to eat before opening the refrigerator. People spend an average of 10.4 hours per year staring into their open refrigerator, wasting the electricity used to turn the light on, and to cool it back down when shut. And the refrigerator isn’t even the most expensive appliance in the home.

Using the oven is uncomfortable enough during the summer months, but it can also be costly. Air conditioner units work overtime when an oven is turned on, to compensate for the added heat in the room, so baking on hot days is irresponsible. Many often leave the oven preheating for longer than necessary while they work on other food preparation tasks.

Fans should only be on in rooms occupied by humans. Fans do not cool down an empty room. They simply cool down the object they are facing and if that’s a wall, that’s a waste of energy. Failing to set a thermostat is financially and electrically neglectful. Most people who turn on their air conditioner with the idea of turning it off when the home feels cool enough often forget to shut it off. A thermostat can prevent hours of wasted air conditioning power.

In the entertainment room, items like DVD players, speakers and cable boxes do not need to be left on all day. Most people only use these items for a few hours at night, and yet they leave them plugged in all day while they’re at work, and all night while they’re asleep. Many of these devices drain small amounts of power even when not in operation. It's known as a vampire drain and it happens in many common household electronics. Falling asleep in front of the television can also be a major electricity-waster, especially if it’s a person’s nightly habit.

The Most Energy Efficient Cities

Some cities make energy efficiency a top priority, and doing so can improve their economy and their environment. Considering that cities consume 75 percent of the world’s natural resources, it’s imperative that officials consider ways to cut back on power consumption.

Reykjavik, Iceland gets all of its heat, electricity, and hot water from renewable hydropower and geothermal plants. In the mid-2000s, the city replaced most of its public transportation with hydrogen-fueled buses, which only emit pure water into the atmosphere.

Portland, Oregon replaced its old streetlights with LED models that consume less energy. The city has always been environmentally conscious: in the 1970s, it removed a six-lane highway to make room for a waterfront park. Portland’s power-conscious citizens use bicycles as one of their main forms of transportation as well.

Vancouver, Canada is another city that boasts clean air. It has the lowest per capita carbon emissions of any major city in North America and receives 90 percent of its energy from hydroelectric power. Vancouver gets its other 10 percent of energy from renewable sources like wind, solar, and wave power.

Oslo, Norway, with its distinct four season weather, uses intelligent lights on their streets. These lights adjust their electrical output depending on the weather and traffic conditions. The city also powers most of its heating systems with biomethane, a renewable energy source retrieved from their waste product. Scandinavia is home to another highly energy efficient city, Copenhagen, Denmark. Over one-third of the city’s residents ride bicycles every day, and the city grows several rooftop gardens, which help insulate buildings.

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Last updated on December 20, 2017 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.

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