Powerwall on FPL’s flat rate: the honest answer is backup

In plain English: FPL’s standard flat residential rate — the same price every hour of every day.

Florida’s flat ~12¢ rate with 1:1 net metering is the plan where most battery apps quietly invent savings. The truth: cycling earns nothing here — and that’s fine, because in Florida the battery has a better job.

The plan at a glance

Flat rate with 1:1 net metering credit for exports. Rates come from the published tariff as reflected in SolDial's rate database in mid-2026 — always verify current numbers with your utility.

What this plan means for a Powerwall

Run the math without wishful thinking: on a flat rate, a kWh costs the same at 2 AM and 6 PM, and with 1:1 net metering an exported solar kWh earns exactly what a self-consumed one saves. Time-shifting through the battery just pays the ~10% round-trip loss for the privilege of moving energy between identical prices. Cycling on this plan loses money. Any app showing you arbitrage dollars on FPL flat is making them up — SolDial’s estimates are computed from your actual tariff, and here they’ll honestly read near zero.

So give the battery its real Florida job: keep it full. Backup reserve high (80–100%), Self-Powered or Backup-only, exports flowing 1:1, and 13.5 kWh standing ready for hurricane season. The Powerwall’s value on FPL is measured in outage nights, not cents.

The automations worth having

Storm watch that verifies the hold; an alert if anything drops the reserve; and grid-outage notifications with backup-time estimates. Boring by design — hurricane insurance should be boring.

Does this apply to my exact situation?

Plans vary by zone, season, and enrollment vintage, and utilities revise rates. SolDial matches your account to the actual published schedule from ~50,000 tariffs and recomputes the strategy — and the honest savings math — from your windows, not a blog’s snapshot. If your plan differs from this page, the app follows your plan.