Tesla Powerwall
Home Energy Storage
Store solar energy, keep your home running during outages, and reduce peak-time electricity costs. Gulfstar Electric installs Powerwall throughout Tampa Bay — residential and light commercial.
Licensed & insured · Tesla-authorized · Serving all of Tampa Bay
Energy Independence for Your Home
Tesla Powerwall is a rechargeable lithium-ion battery that stores energy from solar panels or the grid. It delivers that energy back to your home on demand — during outages, peak pricing periods, or whenever you choose.
With 13.5 kWh of usable capacity per unit and the ability to stack up to 10 units, Powerwall scales from a single-family home to a small commercial building. The integrated inverter means installation is clean and compact.
Managed through the Tesla app, Powerwall gives you real-time visibility into your home's energy flow — solar production, battery state, grid usage, and home consumption all on one screen.
Powerwall 3
13.5 kWh · 11.5 kW peak · 97.5% round-trip efficiency
Backup Power
When the grid goes down, Powerwall detects the outage and switches to battery power in milliseconds — keeping your lights, refrigerator, HVAC, and devices running without interruption.
Solar Self-Consumption
Store excess solar energy produced during the day and use it at night instead of paying full grid rates. Maximize the return on your solar investment with seamless Powerwall integration.
Load Shifting
Program Powerwall to charge during off-peak hours when electricity is cheapest, then power your home during expensive peak periods. Reduce your monthly bill without changing your lifestyle.
Whole-Home Backup
Unlike a generator that powers only a few circuits, Powerwall can back up your entire electrical panel. Multiple units can be stacked for even larger homes or longer backup duration.
Storm Season Protection
Florida's hurricane season makes backup power essential. Powerwall provides silent, emissions-free backup — no fuel to store, no exhaust fumes, no noise ordinance concerns.
Automatic Operation
Powerwall is fully automated — it learns your energy patterns, monitors grid conditions, and manages charge/discharge cycles without any manual input from you.
Powerwall 3 Specifications
Industry-leading capacity, efficiency, and durability — engineered by Tesla to perform in any climate and at any scale.
| Specification | Value |
|---|---|
| Usable Energy Capacity | 13.5 kWh |
| Peak Power Output | 11.5 kW |
| Continuous Power Output | 7.6 kW |
| Round-Trip Efficiency | 97.5% |
| Depth of Discharge | 100% |
| Dimensions (H×W×D) | 45.8 × 29.6 × 5.75" |
| Weight | 287 lbs |
| Operating Temperature | -4°F to 122°F |
| IP Rating | IP67 |
| Connectivity | Wi-Fi, Ethernet, Cellular |
| Warranty | 10 years |
| Compatible Inverters | Tesla Solar Inverter / Third-party AC |
* Specifications reflect Powerwall 3. Earlier Powerwall+ and Powerwall 2 specs differ. Ask our team which model is right for your home.
Your Home's Complete Energy Cycle
Powerwall works seamlessly with solar panels and your existing electrical system — intelligently moving energy where it's needed, when it's needed.
Solar Panels Produce Power
During daylight hours, your solar panels generate more electricity than your home typically uses. Without Powerwall, this surplus is exported to the grid at a low feed-in tariff.
Powerwall Stores the Surplus
Instead of selling excess energy back for cents on the dollar, Powerwall captures it. The battery charges throughout the day, building up a reserve for evening and nighttime use.
Powers Your Home at Night
After sunset, Powerwall discharges stored energy to power your home — keeping your lights, appliances, and devices running on clean, solar-generated electricity you produced yourself.
Backup During Outages
If the grid fails, Powerwall's internal transfer switch activates in under 20 milliseconds — before most devices even register a flicker. Your home continues running on stored battery power.
No Solar? Powerwall Still Works for You
Even without solar panels, Powerwall provides valuable backup protection and load-shifting benefits. Charge from the grid during off-peak hours and discharge during expensive peak periods to reduce your monthly electricity bill.
Plan Your SystemHow Many Powerwalls Do You Need?
The right number depends on your home's square footage, critical loads, and backup duration goals. Use this guide as a starting point — our team will right-size your system during a free consultation.
1 Powerwall
Essential Backup
Small to medium homes (1,500-2,500 sq ft)
12-20 hours typical backup
- Lights and outlets
- Refrigerator and freezer
- Wi-Fi and charging devices
- Critical appliances
2-3 Powerwalls
Whole-Home Comfort
Larger homes (2,500-4,000 sq ft)
1-3 days full backup
- Everything in Essential
- Central AC (during outage)
- EV charging capability
- Home office / media
4-10 Powerwalls
Extended / Commercial
Large homes, light commercial
Multi-day extended backup
- Everything in Whole-Home
- Full commercial loads
- EV fleet charging support
- Peak demand reduction
Installation Requirements
Not sure if your home qualifies? Our electricians conduct a free site assessment and identify any upgrades needed before providing a quote.
Your Local Powerwall Experts
Choosing the right installer matters as much as choosing the right product. Gulfstar brings Tesla authorization, local expertise, and a track record of clean, code-compliant installations.
300+
Powerwalls Installed
4.9★
Average Rating
30%
Federal Tax Credit
10yr
Product Warranty
Tesla-Authorized Powerwall Installer
Gulfstar Electric meets Tesla's standards for Powerwall installation — including product knowledge, electrical expertise, and customer service. You're covered under the full Tesla warranty.
Federal Tax Credit Assistance
The Inflation Reduction Act provides a 30% federal tax credit on Powerwall when installed with solar. We help you document the installation correctly so you get every dollar you're owed.
Integrated Wall Connector Pairing
Combine Powerwall with a Tesla Wall Connector for a complete home energy system. Your EV charges from solar storage overnight — reducing your charging cost to near zero.
Permit-Ready, Code-Compliant
Every Powerwall installation includes all permits, inspection coordination, and AHJ sign-off. We follow NEC, Florida Building Code, and Tesla's own installation standards.
5-Star Rated Across Tampa Bay
From Tampa to Clearwater, Sarasota to Wesley Chapel — homeowners trust Gulfstar for Powerwall installs. Our reviews reflect our commitment to doing the job right the first time.
Local Experts, Not a National Chain
We live and work in Tampa Bay. When you call us after the install, you reach a local team who knows your home, not a national call center scheduling a sub-contractor.
Explore Related Services
Free site assessment included. No obligation.
Frequently Asked Questions
Your most common Powerwall questions — answered by Gulfstar's installation experts.
Still have questions about Powerwall for your home?
Talk to a Powerwall Expert