Home Battery Backup Installation in Lynnwood, WA
Never Lose Power Again — Install a Home Battery System Today
Power outages are more common than ever — and waiting in the dark isn’t an option. With a home battery backup system professionally installed by McCarthy Electric, your home stays powered when the grid goes down.
We install Tesla Powerwall 3 and FranklinWH energy storage systems, trusted brands that deliver clean, quiet, and reliable backup power for homes across Lynnwood, Lake Stevens, Everett, Marysville, and beyond.
Why More Homeowners Are Choosing Battery Backup
Unlike generators, battery backup systems are whisper-quiet, require no fuel, and switch on instantly during an outage.
- Keeps your lights, fridge, internet, HVAC & more running
- Stores power from the grid or solar
- Save on electric bills during peak hours
- Control it all with a mobile app
- Future-proofed for EVs and full electrification
Call now to schedule your free consultation.
Serving Lynnwood, Everett, Lake Stevens, Marysville & nearby
Which Backup System Is Right for You?
Tesla Powerwall 3
- Whole-home or partial backup
- 13.5 kWh energy storage
- Automatically switches on during outages
- Pairs with solar or charges from the grid
- 10-year warranty
- Smart app for monitoring & control
FranklinWH Energy Storage
- Great performance & price value
- High efficiency & flexible setup
- Expandable for larger homes
- Seamless integration with solar & generators
We’ll help you compare options, calculate your home’s load, and design a system that fits your home — and budget.
Get your FREE backup battery system estimate today.
Tesla-Certified Technicians | Work Guaranteed | 25+ Years Experience
Installation Options
Whether you’re starting fresh or already have solar or a generator, we offer customized solutions:
- Battery-only systems (no solar or generator required)
- Solar + battery storage combos
- Battery + generator hybrid for extra redundancy
- Smart load balancing for EV charger + HVAC use
Not sure which setup you need? Let’s chat — we’ll guide you through it.
Why Choose McCarthy Electric?
- Tesla-certified battery backup installers
- Serving Snohomish & North King County
- In-depth load analysis + custom design
- Seamless, code-compliant install — no mess
- Available 24/7 for emergency service
- 100% satisfaction guarantee
- Locally owned and trusted since 2001
Call 425-877-5572 or request your estimate online. Or Schedule Your Free Estimate Now
Ready for Uninterrupted Power?
Call 425-877-5572 now to book your FREE backup battery consultation
Or click here to schedule your estimate online — zero pressure, no obligation.
“With over 25 years of experience and Tesla-certified technicians, McCarthy Electric delivers power you can count on — even when the grid can’t.”
Serving Lynnwood and Beyond
We proudly install battery backup systems in:
And surrounding areas in Snohomish and North King County.
FAQs
Can I install a battery backup system without solar?
Yes — both Tesla Powerwall and FranklinWH systems can charge from the grid and supply power during an outage or when electricity prices spike.
What can a backup battery power?
Essentials like lights, fridge, outlets, internet, garage, and more. We’ll help you size the right number of batteries for your needs.
What’s better — a generator or a battery backup?
Battery systems are silent, require no fuel, switch automatically, and can be monitored from your phone. They’re cleaner, safer, and low maintenance.
How long does installation take?
Most installations take 1–2 days once equipment is onsite and permits are approved.