New Jersey homeowners pay some of the highest electricity rates in the United States. PSE&G sends you a monthly bill, and their smart meter will tell you how many kilowatt-hours you used — but it won't tell you where. Is it the old refrigerator in the garage? The EV charger? The basement dehumidifier that runs 24/7? Without circuit-level monitoring, you're guessing.
Home energy monitors change that. They install inside your electrical panel, attach current transformer clamps (CT clamps) to your wiring, and deliver real-time, circuit-by-circuit energy data to an app on your phone. For a one-time hardware investment of $99–$350, most homeowners identify enough waste to pay for the device within the first few months.
How Home Energy Monitors Work
Every home energy monitor works on the same basic principle: CT clamps measure the current flowing through each wire without interrupting the circuit. The monitor reads voltage from the panel and calculates wattage and kilowatt-hours in real time. That data goes to an app via Wi-Fi, where you can see historical trends, set alerts, and track costs against your actual PSE&G rate.
Installation always requires a licensed electrician. The CT clamps install inside the main breaker panel — the same panel where a mistake can cause a service interruption, arc fault, or serious injury. In NJ, any modification inside the panel requires the work be performed by a licensed electrical contractor. This is not a weekend DIY project.
Emporia Vue 3: Best for Whole-Home + Circuit Monitoring
The Emporia Vue 3 is our top recommendation for most NJ homeowners who want comprehensive monitoring. It monitors your whole-home mains (up to 200A) plus up to 16 individual circuits through included CT clamps. A wired Ethernet connection option (in addition to Wi-Fi) makes it more reliable than competitors that are Wi-Fi only — a meaningful advantage in older Hudson County buildings with thick walls and variable Wi-Fi signal at the panel.
The Vue 3 also has built-in solar and net metering support — it tracks what your solar panels produce versus what you draw from the grid on the same dashboard. NJ's net metering program (currently under revision by the BPU) makes this particularly useful for homeowners with rooftop solar who want to verify their utility is crediting them correctly.
At $99–$200 depending on how many circuit sensors you add, the Emporia Vue 3 is the most cost-effective way to get granular circuit data. Most homeowners who find and eliminate energy waste recover the cost within 2–4 months of PSE&G savings.
Sense Home Energy Monitor: AI-Powered Device Detection
The Sense Home Energy Monitor ($299–$349) takes a different approach. Instead of manually labeling which CT clamp is on which circuit, Sense uses machine learning to automatically identify individual appliances by their unique electrical signatures. Within 2–4 weeks, Sense typically recognizes your HVAC system, refrigerator, washer, dryer, EV charger, and major appliances — without any extra sensors per device.
The Solar Edition adds a second set of clamps to simultaneously track solar production. For NJ homeowners with solar who want to understand whether their system is actually performing as promised — and whether their PSE&G net metering credits are accurate — Sense provides a level of visibility that no other device matches at its price point.
The tradeoff: Sense is not as granular as the Emporia for individual circuit monitoring. Its device detection is probabilistic — it may take weeks to identify all your major appliances, and some devices (especially smaller ones with inconsistent signatures) may never be detected. For homeowners who want clean, labeled circuit data from day one, the Emporia Vue 3 is more straightforward.
Circuit-Level Monitoring on a Budget: Shelly EM Mini Gen4
If you're not ready for whole-panel monitoring, the Shelly EM Mini Gen4 ($18–$25 per unit) lets you add monitoring to one specific circuit at a time. Clip it onto the circuit breaker for your EV charger, heat pump, or home office, and it reports real-time wattage, voltage, and daily kilowatt-hours to an app — and works with Apple Home, Google Home, Alexa, and SmartThings via Matter.
This is particularly useful for NJ homeowners who suspect one circuit is responsible for a spike in their PSE&G bill but don't want to monitor their entire panel. At $18–$25 per sensor, it's the lowest-cost way to get real data on a specific circuit. It still requires a licensed electrician to install safely inside the panel, but the labor is minimal.
What to Expect From Installation
A home energy monitor installation typically takes 1–2 hours. The electrician will:
- Turn off the main breaker and install CT clamps on the main service lines and selected branch circuits
- Connect the monitor to a panel-mounted outlet or install a dedicated outlet if needed
- Label the circuit clamps in the app to match your panel directory
- Verify data is transmitting correctly before leaving
No permit is required in most NJ municipalities for installing a monitoring device inside an existing panel (as opposed to modifying circuits). However, if a new outlet is needed inside the panel enclosure, a permit may apply. We'll confirm permit requirements for your specific municipality before scheduling.
What PSE&G's Smart Meter Won't Tell You
PSE&G's smart meters record your total consumption in 15-minute intervals — and through their app, you can see a general usage graph. What you cannot see: which circuits or appliances drove any given spike, real-time wattage by device, or how your usage compares to a specific baseline. A home energy monitor gives you all of that, plus the ability to set alerts when a circuit draws more than expected — useful for catching a failing HVAC motor, a stuck electric water heater element, or a refrigerator that's running too often.
Want to know exactly where your electricity bill is going? Call us at (848) 294-1739 or get a free quote for a home energy monitor installation. We'll recommend the right device for your panel size and goals.