Reduce Demand Charges.
Protect Operations.

Commercial battery energy storage systems (BESS) store solar or off-peak grid power and discharge it during high-cost peak periods, reducing demand charges that can account for 30-50% of a commercial electric bill. For facilities that can’t tolerate downtime, BESS also provides backup power during grid outages, keeping critical operations running when the utility can’t.

NEI designs and installs BESS from 100 kWh to multi-MWh, sized to each facility’s load profile and integrated with existing or new solar systems.

Commercial electricity rates continue to climb nationally, and California currently ranks among the highest in the country according to the U.S. Energy Information Administration, making demand charge reduction an increasingly time-sensitive investment for California facilities.

NEI’s engineering team evaluates each facility’s utility rate structure, peak load history, and site electrical infrastructure before recommending a system size. This site-specific approach, rather than a one-size-fits-all package, is why NEI’s installations are engineered to match actual usage patterns, not estimated averages.

Commercial battery energy storage system container installed at a C&I facility

Built for Performance

NEI’s TruPower battery systems use bi-directional inverters and long-duration battery technology engineered for utility-scale commercial and industrial projects, delivering an efficient, cost-effective storage solution at the site level. Each system is engineered to meet current fire and electrical safety codes for commercial installations, and integrates with existing switchgear and site electrical infrastructure without requiring facility downtime during commissioning.

Integrated with Your Facility’s Energy System

BESS works alongside your commercial solar array, charging during peak solar production and discharging during periods of high grid demand or peak utility rates. The result: lower demand charges, reduced reliance on grid power during costly peak windows, and a more predictable energy cost structure for your facility.

Solar Array on Factory
FEB Batteries

How Commercial BESS Works with Your Energy System

Battery storage rarely operates alone. Most NEI clients pair BESS with commercial solar to maximize stored energy from on-site generation, and facilities with critical uptime requirements often integrate BESS into a broader microgrid and controls system for automatic failover during outages.

For fleet and facility operators, BESS can also offset demand spikes from commercial EV charging infrastructure.

Every BESS project is eligible for federal tax incentives. See our Commercial ITC Benefits page for current credit percentages and requirements.

Frequently Asked Questions

A commercial BESS stores electricity from solar or the grid and discharges it later, typically during peak demand periods. It’s used to lower demand charges, provide backup power, and improve overall facility energy resilience.

Utilities charge commercial customers based on their highest period of electricity use each billing cycle, not just total consumption. A BESS discharges stored energy during those peak-use windows, lowering the facility’s peak demand and reducing that portion of the bill.

System size depends on your facility’s load profile, peak demand patterns, and goals, whether that’s demand charge reduction, backup power, or both. NEI’s engineering team sizes each system individually based on a site assessment.

Yes. BESS can be retrofitted to most existing commercial solar installations, as long as the inverter and electrical infrastructure can support it. NEI evaluates existing systems as part of the site assessment.

Commercial BESS projects are eligible for the federal Investment Tax Credit (ITC), and may qualify for additional bonus depreciation. See NEI’s Commercial ITC Benefits page for current percentages and eligibility requirements.

Timelines vary by system size and site conditions, but most projects move from signed agreement to commissioning within a few months, including permitting, procurement, and utility interconnection.

Let’s Build Your Energy Future

Our team is ready to help you power what’s next sustainably and reliably.