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Sigenergy AC EV Charger 22kW

Strengths

  • ✓ Open OCPP 1.6 - configurable to any backend including Home Assistant
  • ✓ Solar integration - CT clamp, any inverter brand
  • ✓ Load management - switchboard monitoring
  • ✓ 22kW 3-phase - maximum AC home charging
  • ✓ IP65 - better than Fronius (IP55) or Wallbox (IP54)
  • ✓ $1,400 - $400 cheaper than Fronius Wattpilot with equivalent features
  • ✓ V2H compatible in Sigenergy ecosystem

Watch out for

  • ✗ Newer Australian brand - service and installer network still developing
  • ✗ Socket-only - no tethered cable
  • ✗ Requires Sigenergy aGate module for V2H functionality
  • ✗ Limited independent Australian user reviews

Sigenergy

AC EV Charger 22kW

22 kW 3-phase Level 2 EV charger (untethered socket)

$1,700 AUD

Model

AC EV Charger 7kW — $1,500 AC EV Charger 22kW

Cable option

Our Verdict

The Sigenergy AC EV Charger 22kW combines open OCPP, solar integration, and load management in a 22kW unit at $1,400 - $400 cheaper than the Fronius Wattpilot with equivalent features and better IP65 weatherproofing. In the Sigenergy energy ecosystem, it enables V2H (Vehicle-to-Home) bidirectional charging. The brand is newer to Australia than Fronius or myenergi, with a service network still building. On specification per dollar, it is the strongest 22kW smart charger on the market.

22 kW3-phaseType 2UntetheredIP65
Check install cost Compare all
Key Features
Max Output 22 kW
Phases 3-phase
Smart Charging Yes
Solar Integration Yes
App Control Yes
OCPP Yes
Specifications
Type
Level2-22kW
Max Output
22 kW
Phases
3-phase
Connector
Type 2
Tethered Cable
No (socket)
Smart Charging
Yes
App Control
Yes
Solar Integration
Yes
Scheduling
Yes
Load Management
Yes
OCPP
Yes
IP Rating
IP65
Warranty
3 years
Installation
Licensed electrician
Compatible Vehicles
All Type 2 EVs
Warranty & Installation
✓

3-year warranty — contact the manufacturer or installer for full warranty terms.

✓

Professional installation required — must be installed by a licensed electrician under Australian wiring rules.

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Sigenergy AC EV Charger 7kW

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AC EV Charger 7kW

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7 kW1-phase
Ocular IQ Wallbox 7kW

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IQ Wallbox 7kW

$1,700

7 kW1-phase
Fronius Wattpilot Home 22J

Fronius

Wattpilot Home 22J

$1,800

22 kW3-phase

Overview

The Sigenergy AC EV Charger 22kW is the 3-phase version of Sigenergy’s EV charger lineup - and at $1,400, it is the most competitively priced full-feature 22kW smart charger in Australia.

The Fronius Wattpilot Home 22J ($1,800) is the direct competitor. Both offer OCPP, solar integration, and load management on a 22kW platform. The Sigenergy is $400 cheaper and has better IP and warranty. The Fronius has deeper native integration for Fronius inverter households and a longer Australian service history.

The $400 gap: what you get for less

Sigenergy 22kWFronius Wattpilot 22J
Price$1,400$1,800
OCPPOpen 1.6Open 1.6
SolarCT clamp, any inverterFronius native API + CT clamp
Load managementYesYes
IPIP65IP55
Warranty3yr2yr
V2HYes (with aGate)No
CableSocket onlySocket only

The Sigenergy saves $400, has better IP65 vs IP55, and adds V2H capability. The Fronius counterpoint is the native Fronius Solar.web API integration - reading live inverter data directly rather than through CT clamp estimation. For Fronius households who want that tighter integration, the Wattpilot’s premium is justified. For everyone else, Sigenergy represents the better value.

V2H in the Sigenergy ecosystem

V2H (Vehicle-to-Home) allows a compatible EV to supply power to the home - essentially using the car battery as a home battery during grid outages or peak tariff periods. This requires:

  1. The Sigenergy AC EV Charger (AC interface)
  2. The Sigenergy aGate module (bidirectional power conversion)
  3. A V2H-capable vehicle (selected BYD models and others)
  4. Compatible Sigenergy inverter/gateway

For buyers planning a full Sigenergy energy management system, the 22kW charger is the EV charging component of a V2H-capable setup. This is a genuinely differentiated feature - the Fronius Wattpilot doesn’t support V2H, nor do most other residential chargers in Australia.

Who should buy the Sigenergy AC EV Charger 22kW

Best for:

  • Three-phase households wanting OCPP, solar, and load management at the best price
  • Sigenergy ecosystem buyers planning V2H capability
  • Buyers comparing directly to the Fronius Wattpilot - Sigenergy is $400 cheaper with better spec
  • Home Assistant users wanting open OCPP at 22kW with solar integration

Skip if:

  • You have a Fronius inverter and want native Solar.web integration - the Wattpilot’s API advantage is real
  • Established brand service network is essential - Fronius and myenergi have more Australian history
  • Single-phase only - the cheaper Sigenergy 7kW or Zappi 7kW are better matched

Frequently Asked Questions

01 How does the Sigenergy 22kW compare to the Fronius Wattpilot Home 22J?

Sigenergy 22kW ($1,400): open OCPP, solar (CT clamp), load management, IP65, 3yr warranty. Fronius Wattpilot ($1,800): open OCPP, solar (Fronius native API + CT clamp), load management, IP55, 2yr warranty. Sigenergy is $400 cheaper with better IP and warranty. Fronius has deeper native integration for Fronius inverter households and a longer established AU track record. For non-Fronius households, Sigenergy is the rational value choice. For Fronius households wanting native ecosystem integration, the Wattpilot's API advantage justifies the premium.

02 What is the total installed cost of the Sigenergy 22kW?

Supply price $1,400 plus professional installation (3-phase wiring, CT clamp) of $600–$1,000. Total all-in approximately $2,000–$2,400. Add $80–$120 for a Type 2 cable. This compares to $2,450–$2,900 for the Fronius Wattpilot installed.

03 Does the Sigenergy 22kW support V2H?

V2H requires the Sigenergy aGate module in addition to the AC charger, plus a V2H-capable vehicle and compatible inverter. The 22kW charger provides the AC interface; the aGate enables bidirectional power flow. Compatible V2H vehicles include selected BYD models and others - check Sigenergy's current compatibility list.

04 Does the Sigenergy 22kW work with non-Sigenergy solar inverters?

Yes. The CT clamp solar integration works with any grid-connect inverter. Open OCPP works with any compatible backend. You don't need Sigenergy hardware for any of these features - though the full V2H bidirectional capability requires the Sigenergy ecosystem.

05 Is the Sigenergy AC EV Charger 22kW tethered or socket-only?

Socket-only. You need a separate Type 2 Mode 3 cable (32A rated, typically 6m) available from EV accessory suppliers for $80–$120.

06 What charging speed does the Sigenergy 22kW actually deliver at home?

On single-phase supply: 7.4kW maximum (regardless of 22kW nameplate). On three-phase supply: up to 11kW for vehicles with 11kW OBCs (Tesla Model 3/Y, IONIQ 5/6, VW ID.4, MG4). The 22kW capability is only realisable with a vehicle that has a 22kW AC OBC - no current consumer EV in Australia has this.

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