How V2H works in three steps

The Sigenergy SigenStor system is installed at your home. From that point on, your EV and your house work as one energy system.

Rick installs the system

A Sigenergy 9kWh buffer battery and 25kW bidirectional DC charger go into your garage or utility space. Your electrical panel is connected through a transfer switch that isolates your home from the grid during outages. One AHJ permit. Typical install: one to two days.

Xcel cuts power

The moment the grid goes down, the system switches to battery in 0 milliseconds. Your lights don't flicker. Your refrigerator doesn't restart. Your heat pump keeps running. If your EV is plugged in — truck, SUV, or crossover — the system automatically draws from your vehicle's battery for hours or days of additional backup.

You own it all

No lease. No 25-year contract. No corporation named on your insurance policy. No Xcel application, no interconnection agreement, no waiting months for utility approval. The system is yours the day I finish the install. You control when it charges and discharges.

Does my vehicle qualify?

These vehicles have been confirmed compatible with the Sigenergy EVDC 25kW bidirectional charger. If your vehicle is on this list, call us — we can have you backed up within days of your permit approval.

FORD
F-150 Lightning
98–131 kWh battery · 9.6kW output · Up to 10 days home backup at moderate use · CCS1 connector
Confirmed compatible
RIVIAN
R1T & R1S
135–149 kWh · Largest EV battery on the market · CCS1 connector · Sigenergy field-tested August 2025
Sigenergy field-tested
CHEVROLET
Silverado EV & Equinox EV & Blazer EV
GM Ultium platform · V2H via GM Energy PowerShift · CCS1 connector
Confirmed compatible
GMC
Sierra EV
GM Ultium platform · CCS1 connector · Full whole-home backup capability
Confirmed compatible
HYUNDAI
Ioniq 5 & Ioniq 6
77 kWh · CCS1 (2022–2024 models) · NACS on newer 2025+ models
Confirmed compatible
KIA
EV6 & EV9
77–99 kWh · CCS1 (older models) · NACS on newer 2025+ models
Confirmed compatible
VOLKSWAGEN
ID.4
77–82 kWh · CCS1 connector · Confirmed in Sigenergy compatibility list
Confirmed compatible
FORD
Mustang Mach-E
75 kWh · CCS1 connector · Compatible in community testing — call us to verify your year and trim
— Verify your year first
Not sure which connector your vehicle uses? Call or text 720-850-7888. We carry both the CCS1 and NACS versions of the Sigenergy charger and will confirm compatibility before you commit to anything.

V2H vs Tesla Powerwall.
Same protection. Half the fine print.

A single Powerwall 3 stores 13.5kWh. A compatible EV stores 77–149kWh — up to 10x more backup. Here's the full picture.

Tesla Powerwall 3 · Installed 2026
$14,500–$18,000
13.5 kWh storage only — powers a typical home for 10–12 hours
Requires Xcel Energy interconnection application — weeks of waiting
Does not use your EV battery — two separate systems
Panel upgrade often required ($1,500–$3,500 extra)
Always works regardless of whether car is home
Sigenergy V2H · Installed by Rick
$15,000
9kWh always-on buffer + 77–149kWh in your EV — trucks, SUVs, and crossovers all supported
AHJ permit only — no Xcel application, no interconnection agreement
Charges your EV at 25kW DC — faster than any Level 2 home charger
Works with or without solar panels — no solar required
You own it. No lease, no lien, no 25-year contract
Note: If your vehicle isn't compatible with V2H, or you need backup power when your car isn't home, we also install Tesla Powerwall and Sigenergy standalone battery systems. Call us and we'll tell you honestly which option makes sense for your home.

Why V2H doesn't need Xcel's permission

Most battery systems require a utility interconnection agreement — a process that can take 4–12 weeks and requires Xcel Energy to inspect and approve your installation before it can operate.

V2H is different. Because the system never exports power to the grid, it follows the same electrical code as a standby generator — not the same rules as rooftop solar.

NEC Article 702 — Optional Standby Systems
V2H operates in islanded mode, disconnected
from the utility during discharge. No IEEE 1547
interconnection required. AHJ permit only.
  • 01
    Rick pulls the permit from your local AHJ
    In Boulder County and Summit County, this is a standard electrical permit from the building department — the same permit required for a new subpanel or generator. Typical approval: 2–5 business days.
  • 02
    Installation — typically one to two days
    No waiting months for Xcel to schedule an interconnection inspection. Rick installs the Sigenergy system, wires the transfer switch, and commissions the system — all in one job visit.
  • 03
    AHJ inspection and sign-off
    Your local building inspector signs off on the installation. Done. Xcel is never involved. Your system is live and protecting your home — weeks before any Powerwall customer gets utility approval.

Find out if your vehicle qualifies

No obligation. Rick will verify your vehicle, walk through the install process, and give you a straight price — no pressure, no lease pitch, no commission-driven sales tactics.

720-850-7888

Call or text Rick directly. He picks up.

  • Licensed Colorado Electrical Contractor — not a solar sales company
  • Serving Boulder County, Summit County, and Denver metro
  • All work fully permitted and inspected — never a cut corner
  • No leases, no dealer fees, no 25-year contracts — you own your system from day one
  • Rick answers the phone. The person you call is the person who shows up to do the work