For millions of Americans living along the Gulf Coast and Atlantic seaboard, hurricane season isn't a distant possibility — it's an annual reality. From June 1 through November 30, families in Florida, Texas, Louisiana, the Carolinas, and beyond face the threat of storms that can knock out power for days, sometimes weeks.

In 2024 alone, Hurricanes Debby, Helene, and Milton left over 3.4 million customers without power across Florida. Some communities waited more than a week for restoration. Gas stations couldn't pump fuel. Refrigerators spoiled. Medical devices ran out of charge.

This guide walks through how to prepare your home's energy system before the next storm — from sizing your backup capacity to activating your iHEMS® backup mode.

Understanding Hurricane-Related Power Outages

Hurricanes cause outages through multiple mechanisms, each with different restoration timelines: 

The key takeaway: plan for at least 3–7 days of independent power, especially if you rely on electricity for medical equipment, well water, or refrigeration.

Sizing Your Backup System: Inverter and Battery Capacity

A properly sized backup system has two critical components: an inverter with enough output power to start and run your essential loads, and a battery with enough capacity to sustain them.

Step 1: Identify Your Essential Loads

Not everything needs backup power. Focus on what keeps your family safe:

Step 2: Calculate Required Inverter Size

Add the running wattage of everything you want to power simultaneously, then add the largest surge load: 

• Example: Refrigerator (300W) + lights (150W) + well pump (800W) + window AC (800W) + router (50W) = 2,100W running

• Add largest surge: Well pump surge (2,000W) minus well pump running (800W) = +1,200W

• Minimum inverter capacity: 2,100 + 1,200 = 3,300W → Round up to a 6 kW inverter for headroom

Step 3: Calculate Required Battery Capacity

Multiply daily essential load by the number of days you want to sustain:

• Essential daily consumption: ~7,000–10,000 Wh (from the table above)

• 3-day target: 21,000–30,000 Wh (21–30 kWh)

• Add 20% depth-of-discharge margin: 25–36 kWh usable capacity

With solar panels: If your roof survives the storm, panels can recharge the battery during daylight hours. A 6 kW array can generate 20–30 kWh per day in post-storm sunny conditions — enough to fully recharge a 20 kWh battery.

How iHEMS® Backup Mode Works During an Outage

When the grid drops, every second counts. Here's how iHEMS® manages the transition:

You don't need to flip a switch, start a generator, or run extension cords. The system handles it all — and you can monitor everything from the iHEMS® app.

Installation Timeline: When to Act

Don't wait for a hurricane watch to start planning. By the time a storm enters the forecast cone, installers are fully booked and equipment lead times can stretch beyond the storm's arrival.

Pre-Hurricane Energy Checklist

· ☐ Battery charged to 100%; iHEMS® Backup Reserve mode tested

· ☐ Inverter firmware updated to latest version

· ☐ Solar panels inspected for loose mounts or damaged wiring

· ☐ App credentials saved on phone with offline access

· ☐ Essential load priorities configured (fridge, medical, comms first)

· ☐ Surge protectors on sensitive electronics

· ☐ Emergency contact for installer saved

· ☐ CO detectors with fresh batteries (if using fuel-based generator)

Be Ready Before the Storm

Hurricane season is predictable — power outages are its most common consequence. With a properly sized inverter, adequate battery capacity, and iHEMS® managing the transition, your home can weather the storm with lights on and family safe.

Explore backup-ready systems at candlon.com — hybrid inverters, battery modules, and the iHEMS® platform configured for hurricane-zone reliability.

Want help sizing your backup system? Our U.S.-based team can walk you through a load assessment and recommend the right inverter and battery combination. Contact us today — before the next storm is on the radar.

Smart Energy Modes, Time-of-Use Optimization, and VPP-Ready capabilities depend on equipment configuration, local utility programs, and regional availability. Candlon is a distribution platform and does not manufacture the products featured on this site.