LUMA Energy, Puerto Rico

At a glance

Flip is one of the approved aggregators in LUMA Energy's Customer Battery Energy Sharing (CBES) program in Puerto Rico. For the homes it enrolls, Flip handles everything from sign-up to dispatch to customer payments, and those batteries export stored solar energy to the grid when the island runs short of generation.

The challenge

Puerto Rico has one of the most strained grids in the United States. Generation shortfalls regularly force LUMA to shed load, and many homes have installed solar and batteries to ride through outages.

LUMA created CBES to turn those home batteries into grid capacity. The program asks a lot of an aggregator:

• Year-round, on short notice. Events can be called any month and last up to four hours, often triggered by real generation shortages rather than a planned calendar.
• Strict eligibility. Every home must have solar and be enrolled in LUMA's net metering program, verified against LUMA's own account and premise records.
• A mixed fleet. Homes in Puerto Rico run on many different battery and inverter brands, each with its own controls, data and quirks.
• Pay for performance. Performance must be measured and reported to LUMA, which pays aggregators based on what their fleets deliver.
• Homeowner trust. Families depend on these batteries for backup, so every dispatch has to leave them protected for the next outage.

What Flip did

For the homes in its fleet, Flip handles every step, from the homeowner's first click to the incentive payment that reaches them after each season.

Enrollment that checks itself. Homeowners enroll in a few minutes through Flip-powered apps branded for their battery manufacturer. Flip exchanges enrollment files with LUMA daily over a secure, automated connection. Account numbers, premise IDs and net metering status are validated against LUMA's records before a home is ever dispatched.

One platform, many brands. Flip integrated five battery and inverter brands into a single fleet. LUMA sees one aggregator and one consistent set of data, whatever hardware sits in the garage.

Automated dispatch. LUMA's email event notices are ingested automatically and turned into battery commands across every brand. A reserve is held in each battery so homeowners keep backup power when an event ends.

Automatic pre-charging. Before each event, Flip charges every battery to full so it starts the dispatch with the most energy to give, without the homeowner lifting a finger.

Continuous monitoring. Flip watches every battery's telemetry in near real time. Issues that would limit a battery's output are flagged and fixed, including device settings, before they cost capacity in an event.

Performance reporting. Flip measures delivered energy for every event and produces the post-event and quarterly performance reports LUMA uses to verify delivery and calculate incentives.

Customer payments. Flip pays enrolled homeowners their program incentives directly through its Tremendous integration, so LUMA never has to manage payouts for Flip's customers.

Outcomes

Flip's CBES fleet has dispatched since April 2025, through every season, on one of the country's most demanding grids.

• 100+ emergency events since April 2025. Since its first dispatch in April 2025, Flip's fleet has responded to more than 100 LUMA events, almost all at the evening peak. Since mid-2026 they have come nearly every day. Flip turned every notice into battery commands automatically, within seconds of receiving it.
• A new manufacturer live in under three weeks. Flip added Fortress to its CBES offering on July 24, 2026, enrolled existing Fortress customers in Puerto Rico on August 1, and dispatched them in a live LUMA event on August 11.
• 98.5% participation. Homeowners almost never opt out of events, showing they trust Flip to call on their batteries without compromising their backup.

What this proves: Flip can run a complete aggregator operation inside a utility program, covering enrollment, dispatch, reporting and payments, across mixed hardware.

Why it matters for other utilities

Most utilities launching a battery program face the same problems LUMA did: mixed hardware, eligibility rules tied to billing systems, and regulators who want proof of performance. Flip has already solved them in production.

A utility working with Flip gets one accountable partner for enrollment, dispatch, reporting and payments, whatever hardware its customers own. In a multi-aggregator program like CBES, Flip takes the utility's dispatch signal and handles everything downstream. If the utility runs a DERMS, Flip plugs into it.