Apartment Buildings Have Peak Demand Charges, Too: A 105-Unit Battery Project

Oct 21

A 105-unit apartment building in Buffalo, New York, is putting battery storage to work on two challenges: managing electricity costs and preparing for outages. For Arizona multifamily owners, the useful question is whether shared building loads create a similar opportunity.

What the Buffalo project includes

On October 20, 2026, Viridi and developer Good Carbon Co. announced a 3.75 megawatt-hour battery installation at Peace Bridge Place. The indoor system is designed to support the fully electrified property during outages, reduce peak grid demand and participate in National Grid demand-response programs. The building also uses geothermal heating and cooling.

The announcement describes planned benefits. It does not report measured annual savings, installed cost or a demonstrated payback. This is an example of how a multifamily battery project is being deployed; another property's economics require a separate analysis.

Why Arizona multifamily owners should pay attention

Apartment properties may have substantial owner-paid loads: common-area cooling, corridor lighting, pool pumps, laundry rooms, offices and EV charging. Where the applicable utility tariff includes demand charges, overlapping equipment loads can increase the property's bill.

Battery storage can be evaluated for discharging during demand peaks or higher-priced energy hours. Whether that makes financial sense depends on the actual APS, SRP, TEP or other utility tariff, interval usage, battery capacity, controls and installed cost. New York program revenue should not be assumed available in Arizona.

Start with the meters and the loads

Determine who pays each meter. A battery serving an owner-paid common-area meter will not automatically reduce separately metered residents' bills. Master-metered properties, separately metered apartments and mixed-use buildings need different evaluations.

Review 12 months of bills and available interval data. Identify when demand peaks occur and compare storage with practical load-management options. Rescheduling equipment may address part of the problem before capital is committed. Solar can also be evaluated against the property's load timing and tariff.

Backup power needs an explicit design

Cost control and outage protection can be goals for the same project, but backup capability must be designed. Define selected loads, required runtime, transfer equipment and operating priorities. Access controls, communications, lighting and selected pumps may deserve consideration. A battery does not automatically provide whole-building backup or replace required emergency systems.

The Buffalo project uses equipment designed for indoor installation. That does not establish that every battery can be installed inside an apartment building. Equipment selection, siting, fire and building requirements, utility interconnection and qualified engineering review remain site-specific.

Five questions to ask before buying equipment

Which loads are on the owner's electricity bill?
What creates the monthly demand peak?
Which operations must continue during an outage, and for how long?
Is suitable space and electrical capacity available?
Do the economics work using verified local rates and conservative assumptions?

Review your Arizona property's starting point

Peak Ready Energy helps Arizona owners and facilities teams organize these questions through commercial energy readiness and time-to-power assessments. Request a free preliminary facility review to identify whether battery storage, solar or load management deserves a closer look.

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