Your home,
running smarter.
This isn't a load controller,
it's a Demand Automation Computer.
Installed beside your home's main electrical panel, this device intelligently coordinates your largest electrical loads during peak demand periods. The result? Lower demand charges, access to more affordable utility rate plans, and electric bill savings of 30–50%.
Working 24/7. Invisible to you.
How much will you save?
Use the calculator below to see how much you can save over time — and how it compares to solar and other traditional energy products. Just drag the sliders to your average monthly bill and usage, then tap Calculate to watch your savings add up.
See how it works
Stop overpaying for electricity and live in comfort with EnergySentry.
Real homes. Real bills.
"Thirty days later my bill was $266. I could not believe it when I opened the statement."
"Kept the house at 71 all July — kids home all day, pool pump running — and the bill still came in $185 lower."
"Two AC units, a pool pump, and an EV charger. The next bill showed up $310 lighter."
What is demand billing?
Most Arizona utilities now bill residential customers not just for how much electricity they use, but for how much they use at once. Your single highest 15- or 30-minute spike of the month — your peak demand — sets a charge that applies to the entire billing cycle.
That means one afternoon where the AC, water heater, dryer, and EV charger overlap can add hundreds of dollars to your bill — even if your total usage stayed the same.
How the 9388A manages loads
The Energy Sentry 9388A constantly calculates the rate at which your electric use is approaching your demand limit and sheds deferrable loads for minutes at a time — the store/defer principle. Loads like water heaters, ACs, pool pumps, and dryers contain thermal storage, so they can cycle off briefly with zero impact on comfort.
Same kWh consumed. Dramatically lower bill.
Every year you wait costs you thousands.
Find out exactly what your bill should actually be — in two minutes, for free, with zero commitment.
Get your free
savings estimate
Answer a few quick questions — takes about 60 seconds.