The Benefits of Electrical Submetering for Multifamily Properties

If your multifamily property has individual HVAC systems, electricity is almost certainly your highest-cost utility. And unlike water — where consumption is relatively predictable — electric usage swings wildly from unit to unit based on thermostat habits, window orientation, and whether your resident runs the AC at 68 or 78.

That variance is exactly why electrical submetering pays for itself faster than any other utility meter you can install.

In our general submetering overview, we covered the broad case for individual metering across all utilities. This post focuses specifically on electric — why it matters most, what the hardware looks like, and what operators are actually seeing in recovery and ROI.

Electric Is the Expensive One

For properties with individual HVAC, electricity typically accounts for 40-60% of total utility costs. That makes it the single biggest line item on the utility side of your operating budget.

Here's the problem: when electric is bundled into rent or split via RUBS, residents have zero incentive to moderate their HVAC usage. The resident who keeps the apartment at 65 degrees all summer pays the same as the one who opens a window. That's not fair billing — it's a hidden subsidy.

HVAC Drives the Biggest Variance

Water consumption across similar-sized units tends to cluster within a relatively narrow range. Electric is different. HVAC usage alone can create a 2-3x consumption difference between units in the same building — same square footage, same number of bedrooms, dramatically different electric bills.

The drivers are predictable:

• Thermostat set points — a 10-degree difference in cooling set point can double energy consumption
• Unit orientation — south- and west-facing units absorb significantly more solar heat
• Window habits — open windows during cooling season waste enormous amounts of energy
• Supplemental heating — space heaters in winter are invisible consumption spikes
• Appliance load — gaming setups, aquariums, and cryptocurrency mining rigs are more common than you'd think

Without submetering, all of that variance gets averaged across every unit. The conservative resident subsidizes the wasteful one. Submetering makes it visible — and billable.

CT Installation Is Less Disruptive Than You Think

One of the biggest advantages of electrical submetering over water submetering is installation. Water submetering requires cutting into plumbing, shutting off water to units, and dealing with the mess that comes with it. Electrical submetering using current transformers (CTs) is a completely different experience.

CT-based meters clamp around existing wiring in the electrical panel. No cutting, no splicing, no service interruption. A licensed electrician can typically install 8-12 CT meters per day in an existing building, compared to 4-6 water meters that require plumbing shutdowns.

Demand Charge Management

Here's something most operators overlook entirely: demand charges. Commercial electric rates typically include both a consumption charge (per kWh) and a demand charge based on your property's peak load during the billing period. Demand charges can represent 30-50% of your total electric bill — and they're driven by what happens in a single 15-minute window each month.

Electrical submetering gives you the data to actually manage demand. When you can see which units and systems are driving peak load, you can:

• Identify peak contributors — which buildings or units spike consumption simultaneously
• Implement demand response — stagger HVAC start times to flatten the peak curve
• Negotiate better rates — armed with load profile data, you have leverage with your utility provider
• Set consumption alerts — notify property staff when demand approaches the billing threshold

Even a 10-15% reduction in peak demand translates directly to lower demand charges — savings that flow straight to NOI without changing a single resident's bill.

Real-Time Monitoring and Anomaly Detection

Unlike traditional read-once-a-month meters, modern electric submeters with AMI (automated metering infrastructure) transmit data in near real-time. That changes what's possible.

Anomaly detection becomes automatic. A unit that normally draws 30 kWh/day suddenly pulling 80 kWh/day triggers an alert. That could be a malfunctioning HVAC compressor, a stuck relay, or a space heater someone forgot about. Without submetering, you wouldn't know until the master meter bill arrives — 30 days of waste later.

Real-time data also enables:

• Vacant unit monitoring — a vacant unit consuming power means something is wrong
• Maintenance prioritization — HVAC systems losing efficiency show up as gradual consumption increases before they fail completely
• Seasonal benchmarking — compare unit-level consumption year-over-year to identify degrading building envelope performance
• Resident usage insights — give residents access to their own data and watch conservation improve by 10-15% from awareness alone

Ready to see what your properties are actually consuming?

Vitality connects to your submeters and turns raw data into actionable billing and energy insights — starting at $0.50 per unit.

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The ROI Math

Electrical submetering has the fastest payback of any utility meter type because of the combination of lower installation cost and higher utility cost recovery.

For a 200-unit property spending $240,000/year on electricity (master-metered):

That's not a typo. When you stack recovery improvement, conservation reduction, and demand charge management, electrical submetering often pays for itself within the first year — sometimes within six months for properties with high electric spend.

Electric Meter Types

Choosing the right meter depends on your building's electrical configuration and what you need from the data.

Getting Started

If you're master-metered on electric and running RUBS — or worse, including electric in rent — submetering is the single highest-ROI improvement you can make to your utility operation. The installation is minimally disruptive, the payback is fast, and the ongoing data transforms how you manage your properties.

Start with your highest-cost properties. Look at your electric bills, identify the buildings where HVAC drives the most variance, and run the math. If you need help with that, check out our meter solutions page or talk to our team — we'll walk through the numbers with you.

For the broader comparison of billing methods, see our RUBS vs. Submetering guide. And if you're considering submetering water as well, our water submetering post covers the specifics for that utility type.

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