Tesla Powerwall
Powerwall 3
Ruled out
Won’t pair with your home’s 3-phase electrical service. Off the table on technical grounds — not preference.
Prepared for Fraser Bullock · Alpine, Utah
When the power goes out, your home won’t notice.
A FranklinWH whole-home battery system for the Bullock Residence — designed, installed, and stood behind by one electrician.
45 kWh
Total capacity
15–18 hrs
Backup runtime
15 yrs
Full warranty
The Recommendation
Why FranklinWH
I went deep on every battery system worth considering for your home, and I’m landing on FranklinWH. Here is the honest reasoning.
EcoFlow OCEAN Pro
Considered closely
Close call
The sleeker product, and the one I showed Ms. Bullock. Impressive hardware — but only 10 months on the market, with an unproven service record.
FranklinWH aPower 2
The system I recommend
Recommended
Five-plus years of installs in the field, US-based service that answers the phone, and a 15-year warranty. Second-generation hardware — the kinks are out.
Two systems were close calls worth explaining.
Tesla won’t work with your 3-phase service. It’s off the table on technical grounds, not preference.
EcoFlow OCEAN Pro is the sleeker product — the one I actually showed Ms. Bullock. The hardware is impressive and the wall-mount look is hard to beat. But it has only been on the market 10 months. When I dug into installer feedback, EcoFlow’s track record on warranty claims and field issues isn’t solid yet. For a system that has to run silently in the background for 15 years and just work when the power goes out, you don’t want to be the customer helping them debug year-three problems.
FranklinWH has 5+ years of installs in the field, a US-based service operation that actually answers the phone, and a 15-year warranty backed by a company that has been refining the same product line since 2019. The aPower 2 is their second generation, and the kinks are out.
The goal here is a system you’ll forget exists until the power goes out — then it quietly does its job and goes back to being invisible.
Coverage
What we’re backing up
Every circuit in both emergency panels stays live — refrigerators and freezers, both furnaces, security, communication, the kitchen, the floral fridges, and Ms. Bullock’s commercial inventory.
Your home was wired for this from the start
Whoever did the original electrical aggregated every critical circuit onto a single 100-amp breaker at the main panel — clearly set up for a generator that was never installed. We tap that exact connection point: a cleaner install, less invasive work, and an architecture that is already correct.
If you’d like the detail, here is every circuit in each panel — open a panel to view it.
Backup Panel A 16 circuits · server / storage room
| Circuit | Breaker | Typical load |
|---|---|---|
| Master Bath | 20A 1P | 200–400 W (intermittent) |
| Pumps Circulation | 20A 1P | 150 W |
| Sump Pump | 20A 1P | 600 W (rare cycle) |
| Water Heater | 20A 1P | 100 W (gas controls) |
| Furnace #1 | 20A 1P | 700 W (cycles) |
| Furnace #2 | 20A 1P | 700 W (cycles) |
| Boiler | 20A 1P | 300 W (cycles) |
| Lutron / Eco | 20A 1P | 150 W (continuous) |
| Theater Fridge | 20A 1P | 150 W (cycles) |
| Master Bedroom | 20A 1P | 300 W (intermittent) |
| Lvl 3 S. Furnace | 20A 1P | 800 W (cycles) |
| Basement Eco | 15A 1P | 100 W |
| Loop 2 Eco 1 | 15A 1P | 75 W |
| Loop 1 Eco 2 | 15A 1P | 75 W |
| Loop 2 Eco 2 | 15A 1P | 75 W |
| Loop 1 Eco 3 | 15A 1P | 75 W |
| Unidentified 50A circuit | 50A 2P | To confirm on site |
Backup Panel B 13 circuits · floral storage room
| Circuit | Breaker | Typical load |
|---|---|---|
| Pantry Freezer | 20A 1P | 200 W (cycles) |
| Furnace | 20A 1P | 700 W (cycles) |
| Security | 20A 1P | 150 W (continuous) |
| Lvl 3 Furnace | 20A 1P | 700 W (cycles) |
| A/V System | 20A 1P | 100 W idle · 500 W active |
| Pantry Fridge | 20A 1P | 150 W |
| Main Kitchen Fridge | 20A 1P | 250 W |
| Main Kitchen Freezer | 20A 1P | 250 W |
| Main Kitchen GFCI | 20A 1P | 0–1500 W (varies) |
| Shade Panels | 20A 1P | 100 W (brief) |
| Commercial / Floral Fridge R | 20A GFCI | 500 W |
| Pantry / Floral Fridge L | 20A GFCI | 500 W |
| Pantry Fridge #3 | 20A 1P | 200 W |
15–18 hrs
Typical-use runtime
Comfortably covers any overnight outage. For the kind of outages Alpine actually sees, you would never come close to draining it.
45 kWh
Total capacity
Roughly three Tesla Powerwalls. Plenty of headroom for the essential loads — and expandable on the same controller if you ever want more.
The System
What gets installed
Three batteries and one intelligent controller — a complete system, designed for your home.
- FranklinWH aPower 2 Battery
- 3 units × 15 kWh — 45 kWh of total storage
- FranklinWH aGate Controller
- The intelligent controller — automatic transfer and whole-system management
- Backup coverage
- Emergency Panels A & B — every circuit
- Grid transfer
- Automatic, in under one second — no flicker, no dropout
- Monitoring
- The FranklinWH app — live status from your phone, iPhone or Android
Install location
The garage nook by the pump cart — three aPower 2 batteries and the aGate controller, wall-mounted on the right-hand wall as shown below.
When It Matters
What an outage looks like
No generator to start. No fuel to manage. No monthly exercise run.
The grid goes down
A storm, a line fault, a planned shutoff — the power on your street stops.
Under 1 second
The battery takes over
Fast enough that the lights don’t flicker and the WiFi doesn’t drop. Both emergency panels stay live — you would notice only because the neighbor’s house went dark.
The grid returns
The system switches back automatically and recharges itself. You can watch it all from the app — though most people stop checking after the first few weeks.
Investment
The investment
Engineering, equipment, permitting, and installation — the complete project, one price.
Complete Battery Backup System
FranklinWH aPower 2 × 3 + aGate controller, installed
$52,000
What’s included
Electrical engineering and complete system design
Permit drawings and submittal to the city
All hardware — batteries, controller, and balance-of-system
All conduit, conductors, mounting, and anchoring
Installation by BYOP Electric
Commissioning, testing, and a full walkthrough
15-year manufacturer warranty from FranklinWH
15-year BYOP Electric support and service
Timeline
Step 1
3–4 wks
Permit
In parallel
2–3 wks
Equipment delivery
Step 2
3 days
Installation on-site
Step 3
Same day
Commissioning & walkthrough
From contract to power-on: about four to six weeks.
Why BYOP Electric
You’ll work with me directly
B.S. Electrical Engineering, BYU
Two years at Rocky Mountain Power
Utah Master Electrician
I started BYOP Electric to help homeowners reach true power independence — the kind that quietly works year after year, through outages, grid problems, and whatever comes next. What it really comes down to: every home and every situation is different, so every system gets built for that — and then we install it right. Backup is what we specialize in, and we know what works best for what.
You will be working with me directly through design, install, and the next 15 years of service. Not a sales rep, not a call center, not a national chain.
15 years, fully covered
15 yrs
FranklinWH manufacturer warranty
aPower 2 batteries and the aGate controller.
15 yrs
BYOP Electric support & service
Direct support from the electrician who designed and installed it.
Next Step
If this looks right, I’ll take it from here.
Let me know and I’ll send the contract and start the permit. I’m glad to walk through any part of it first — whatever is easiest for you.
Bat Ariun-Erdene
BYOP Electric · Master Electrician