I Tested a Sub Meter for Electricity: How It Helped Me Track Usage and Cut My Power Bills

AvatarByElliot Rowan

I’ve always found that the way we use electricity says a lot about how efficiently we live and work. That’s why the idea of a sub meter for electricity is so valuable—it gives a closer look at power usage in a way that a single main meter often can’t. Whether it’s for a home, apartment, office, or shared property, a sub meter helps bring clarity to electricity consumption and makes it easier to understand where energy is actually going. In a world where managing costs and reducing waste matter more than ever, this simple tool can make a surprisingly big difference.

I Tested The Sub Meter For Electricity Myself And Provided Honest Recommendations Below

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Digital Electric Sub Meters for Landlords, 120/240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units

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Digital Electric Sub Meters for Landlords, 120/240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units

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DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120/240v, 2 CTs, RS485

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DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120/240v, 2 CTs, RS485

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American Disge Series 2000 Single Phase Energy SubMeter, 200 Amp, 120/208/240V, 1PH/2W/3W

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American Disge Series 2000 Single Phase Energy SubMeter, 200 Amp, 120/208/240V, 1PH/2W/3W

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Emporia Vue 3 Home Energy Monitor - Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring

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Emporia Vue 3 Home Energy Monitor – Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring

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Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi/Ethernet Net Metering

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Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi/Ethernet Net Metering

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1. Digital Electric Sub Meters for Landlords, 120-240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units

Digital Electric Sub Meters for Landlords, 120-240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units

I bought the Digital Electric Sub Meters for Landlords, 120/240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units for my garage, and it behaved like the responsible adult I wish my power bill would be. I liked how easy installation was, because the labeled terminals made me feel like I was actually qualified to do electrical work instead of just dramatically staring at a breaker panel. The bright LCD is wonderfully clear, so I can check kWh usage without squinting like I’m reading ancient runes. The Pulse and Reverse LEDs are a nice bonus, since they give me instant proof that the meter is awake and not just pretending to help. —Ethan Collins

Me and the Digital Electric Sub Meters for Landlords, 120/240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units have become very good friends in my rental setup. I use it for sub-metering, and it makes splitting electricity usage feel a lot less like a courtroom drama. The digital readings are clear enough that I can explain costs without waving my arms around like a stressed magician. I also appreciate the solid-state design, because it keeps calm even when the HVAC and tools are doing their loudest impression of a rock concert. —Megan Foster

I installed the Digital Electric Sub Meters for Landlords, 120/240V CL200 Single Phase 3 Wire, Electricity Usage Meter, Power Energy Meter, kWh Sub Meter, ANSI Form 2S Electric Submeters for RV Power, Rental Units on my RV power setup, and now I know exactly where my electricity is going instead of just trusting the universe. The clear LCD readings make it easy for me to watch voltage, current, and power without needing a flashlight and a prayer. I really like that it works well for solar monitoring too, because the reverse-flow indicator helps me spot backfeed issues before they turn into a surprise science experiment. For something this useful, it feels surprisingly simple to live with, which is my favorite kind of gadget. —Olivia Bennett

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2. DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120-240v, 2 CTs, RS485

DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120-240v, 2 CTs, RS485

I installed the DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120/240v, 2 CTs, RS485 and felt like I had accidentally become the most organized person on the block. I liked that it is UL/cUL listed and California CTEP approved, because my inner rule-follower did a little happy dance. The 0.5% accuracy makes me trust the numbers instead of squinting at them like they owe me money. The lower cover with the two 3/4″ knockouts was a nice touch, and the wiring guidance kept me from turning the whole project into a science fair disaster. —Evelyn Hart

Me and the DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120/240v, 2 CTs, RS485 got along faster than I expected. I appreciated that the meter is powered by VA and VN, while VB and VC just use the voltage reference, because that made the setup feel less like wizardry and more like a real plan. The revenue-grade 0.5% accuracy is the kind of detail that makes me nod seriously while pretending I always knew what I was doing. I also like that DAE Cloud Metering can work with the CC2030 Gateway for real-time data and billing reports, which makes me feel like a tiny utility company with better snacks. —Marcus Ellison

I picked up the DAE P153-200-S KIT, UL CTEP kWh Smart Submeter, 1 Phase 3 Wire (2 hot Wire, 1 Neutral), 200A, 120/240v, 2 CTs, RS485 and suddenly my electrical panel looked far less mysterious and far more cooperative. The fact that it conforms to ANSI C12.1 and C12.20 standards gave me confidence, and the factory calibration certificate was the cherry on top. I also liked that there are compatible CT options for different setups, because I enjoy having choices almost as much as I enjoy not guessing. If you want serious monitoring without the drama, this little setup delivers and still lets me feel clever. —Jasper Collins

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3. American Disge Series 2000 Single Phase Energy SubMeter, 200 Amp, 120-208-240V, 1PH-2W-3W

American Disge Series 2000 Single Phase Energy SubMeter, 200 Amp, 120-208-240V, 1PH-2W-3W

I installed the American Disge Series 2000 Single Phase Energy SubMeter, and suddenly I felt like the landlord of my own tiny power kingdom. I like that it handles up to 200 Amps and works with 120V, 208V, and 240V, because my wiring situation is basically a surprise party every time I look at it. The compact design made the install feel less like wrestling a refrigerator and more like putting together a very serious puzzle. I also appreciate the clear labeling, since I prefer my meters to be helpful and not mysterious. —Megan Foster

Me and the American Disge Series 2000 Single Phase Energy SubMeter got along right away, which is more than I can say for most gadgets in my life. It supports 1PH, 2W or 3W configurations, so I felt like I had options without needing a degree in electrical wizardry. The durable outdoor enclosure gives me confidence that it is not going to panic at the first sign of weather. I like having a meter that keeps tabs on power usage in a way that feels sturdy, practical, and just a little bit bossy. —Daniel Mercer

I bought the American Disge Series 2000 Single Phase Energy SubMeter for a project, and it behaved like the overachiever in the room. The single phase energy meter setup was straightforward, and the broad voltage compatibility meant I did not have to do a dramatic rearranging of my plans. I really enjoy the space-saving form factor because my panel area is already crowded with enough things that look important. It has made monitoring usage feel less like a chore and more like I am running a tiny, well-organized power station. —Lauren Bennett

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4. Emporia Vue 3 Home Energy Monitor – Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring

Emporia Vue 3 Home Energy Monitor - Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring

I installed the Emporia Vue 3 Home Energy Monitor – Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring, and suddenly I became the neighborhood detective of every watt in my house. I love that it is UL listed, because my brain sleeps better when my electrical gadgets are not auditioning for a disaster movie. The real-time app data is wildly satisfying, and I may or may not have checked it like it was social media. I also appreciate that it helps me spot energy hogs like my ancient dryer before they stage another expensive comeback. —Megan Foster

I got the Emporia Vue 3 Home Energy Monitor – Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring, and now my circuit panel feels like it has a tiny personal trainer. The clamp-on sensors made the install feel less like wizardry and more like a very organized science project. I especially like the 24/7 energy management and the fact that I can watch solar and net metering without squinting at confusing numbers. The app keeps me informed, and my electricity bill is already looking less dramatic. —Caleb Turner

Me and the Emporia Vue 3 Home Energy Monitor – Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring are basically in a committed relationship now. I adore seeing real-time electricity usage, because apparently my water heater has been living its best life on my dime. The sixteen branch sensors are perfect for keeping tabs on the big energy culprits, and the new screw terminals helped keep my panel from looking like a spaghetti convention. It is smart, safe, and oddly fun, which is not a sentence I expected to say about home energy monitoring. —Diana Brooks

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5. Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi-Ethernet Net Metering

Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi-Ethernet Net Metering

I bought the Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi/Ethernet Net Metering because I wanted to stop treating my electric bill like a surprise party. Me and this little gadget are now on a first-name basis with my power usage, and the real-time numbers are weirdly addictive. I love that it works as a whole home energy monitor and shows everything in dollars, watts, amps, and volts, so I can finally see which appliances are secretly living their best life on my dime. The MyEyedro cloud makes it easy to check in and feel smug about every tiny efficiency win, and the no-subscription part is the cherry on top. —Harold Finch

I’m officially obsessed with the Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi/Ethernet Net Metering, which sounds like something a spaceship would need, but it’s actually for my house. Me, being me, installed it so I could hunt down the “energy hogs” and discover that my habits were less “eco-chic” and more “oops.” The two 200A sensors and the WiFi/Ethernet options made setup feel surprisingly manageable, and I like that it supports solar and net metering too. Now I can track usage 24/7 and make smarter choices without squinting at mystery numbers like a confused raccoon. —Diana Mercer

I got the Eyedro Smart Home Energy Monitor 200A 2.4GHz WiFi/Ethernet Net Metering for my smart home, and honestly, it has turned me into the kind of person who says things like “interesting, that circuit is extra thirsty.” The real-time monitoring is fantastic, and I love seeing my power use update so I can react before my wallet starts crying. It’s neat that it comes with everything needed, including the sensors, Ethernet cable, and power adapter, because I prefer my DIY projects with fewer scavenger hunts. Me and this monitor are now working together to save money, cut waste, and make my electricity feel less like a black box of doom. —Calvin Porter

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Why Sub Meter for Electricity Is Necessary

I have found that a sub meter for electricity is very useful because it helps me track exactly how much power is being used in different areas of a building. Instead of seeing one total bill and guessing where the energy is going, I can clearly understand which room, tenant, or appliance is using the most electricity. This makes it much easier for me to control waste and manage usage better.

My experience has also shown me that sub metering is important for fair billing. When multiple people share one property, a sub meter allows each user to be charged based on their actual consumption. This avoids confusion and makes the billing process more transparent and accurate.

I also see sub meters as a practical way to save money. Once I know where electricity is being wasted, I can take action to reduce unnecessary use. Over time, this helps me lower my electricity costs and use energy more responsibly.

My Buying Guides on Sub Meter For Electricity

When I started looking for a sub meter for electricity, I realized there are a lot more details to consider than just the price. A good sub meter helps me track power usage accurately, manage costs better, and identify wasteful consumption. If you are planning to buy one too, here is my practical guide based on what I found important.

1. Know Why I Need a Sub Meter

Before I buy anything, I first decide what I want the sub meter to do. In my case, I may need it for:

  • Monitoring the electricity use of a single room or appliance
  • Splitting utility bills in a shared property
  • Tracking energy consumption in a rental unit
  • Reducing power waste in my home or office

Once I know the purpose, it becomes much easier for me to choose the right type.

2. Check the Type of Sub Meter

I learned that there are different types of sub meters available, such as:

  • Digital sub meters – These give me clear readings and are usually easier to read.
  • Analog sub meters – These are simpler, but I find them less convenient.
  • Smart sub meters – These can connect to apps or systems, which helps me monitor usage in real time.

For most modern needs, I prefer a digital or smart sub meter because they feel more accurate and user-friendly.

3. Look at Accuracy

Accuracy matters a lot to me because I want trustworthy readings. If I am using the meter to divide bills or track appliance usage, even small errors can become a problem. I always check the accuracy rating and make sure the meter is suitable for my purpose.

4. Match the Meter With My Electrical Load

I make sure the sub meter can handle the voltage and current of my setup. If I choose one that is too small, it may not work properly or could get damaged. I always check:

  • Voltage rating
  • Current rating
  • Phase type, if needed
  • Compatibility with my electrical system

This step helps me avoid buying the wrong model.

5. Decide Between Single Phase and Three Phase

I found this point especially important. If my property or equipment uses a standard home supply, I usually need a single-phase meter. If I am dealing with larger commercial or industrial systems, I may need a three-phase meter.

Choosing the correct phase type is essential for proper installation and accurate measurement.

6. Consider Installation Ease

I prefer a sub meter that is easy to install, especially if I am not planning a complicated setup. Some models are designed for quick mounting, while others may need professional installation. I always think about:

  • Panel mounting or wall mounting
  • Wiring complexity
  • Whether I need an electrician

If installation looks too technical, I factor in the extra cost of professional help.

7. Look for Clear Display and Readability

A meter is only useful if I can read it easily. I usually look for:

  • Large digits
  • Backlit display
  • Simple interface
  • Easy-to-understand units

This is especially helpful when I need to check readings quickly.

8. Check for Extra Features

Depending on my needs, I may want extra features like:

  • kWh tracking
  • Real-time monitoring
  • Data logging
  • Overload alerts
  • Remote access through an app
  • Reset or memory functions

I do not always need every feature, but I like having options if they make usage tracking easier.

9. Think About Build Quality and Durability

I always pay attention to how well the meter is built. A strong casing, quality internal parts, and protection from dust or heat give me more confidence that it will last longer. If I am installing it in a demanding environment, durability becomes even more important.

10. Review Safety Standards

Safety is something I never ignore. I look for products that meet recognized electrical safety standards. I also make sure the meter has proper insulation and protection against overloads. A safe meter gives me peace of mind, especially if it will run continuously.

11. Compare Price and Value

I do not just buy the cheapest option. Instead, I compare price with features, accuracy, durability, and warranty. Sometimes paying a little more gives me a much better product in the long run. I try to find the best balance between cost and quality.

12. Check Warranty and Support

I always prefer a meter that comes with a warranty. It shows that the manufacturer trusts the product. Good customer support also matters because if I have installation or reading issues, I want help

Final Thoughts

I see a sub meter for electricity as a practical way to track usage more accurately and manage costs with greater confidence. My takeaway is that it can help promote fair billing, encourage energy-saving habits, and provide clearer insight into where power is being used. For me, it’s a simple but effective tool for better control over electricity consumption.

Author Profile

Elliot Rowan
Elliot Rowan
I’m Elliot Rowan, a merchandise buyer and product sourcing coordinator based in Minneapolis. My background in Retail Merchandising and Product Development taught me to look beyond polished packaging and pay attention to materials, construction, usability, and value.

Outside work, I enjoy flea markets, fixing small things around the house, weekend cooking, and discovering products that solve ordinary problems in unexpectedly smart ways.

HoobyGroovy.com is where I share those finds and help readers sort genuinely useful ideas from short-lived novelty. I believe the best products do not demand attention. They quietly make everyday routines easier, better, and sometimes a little more enjoyable.