What Is Whole-Home Electrification?
Whole-home electrification means replacing every gas appliance and fossil-fuel dependency in your home with efficient electric alternatives powered by rooftop solar. It is not a single purchase — it is a sequenced infrastructure upgrade that, when done correctly, eliminates your energy bills within 4–7 years and adds $40,000–$80,000 to your property value.
After completing 2,400+ whole-home electrification projects across five states, Cable Co's Renewables Division has refined this process into a repeatable system. We now deliver more than 50 electrification installations per week per state — making us one of Australia's largest residential electrification operations.
"The single biggest mistake homeowners make is treating electrification as a series of disconnected purchases. Solar here, battery later, heat pump eventually. Each decision affects the next. The sequence matters more than the individual product choice." — Mark Willis, Head of Renewables & Electrification, Cable Co
Why 2026 Is the Optimal Year to Electrify
Three converging factors make 2026 the most financially advantageous year in Australian history to electrify your home:
1. Battery prices have fallen 42% since 2023. The Clean Energy Council reports average installed battery costs dropped from $1,400/kWh in 2023 to $810/kWh in 2026. A 10kWh system that cost $14,000 three years ago now costs $8,100.
2. Gas prices are rising permanently. The ACCC's Gas Inquiry 2025-2030 confirms wholesale gas prices have increased 67% since 2021, with residential tariffs now averaging $0.045–$0.065/MJ nationally. The era of cheap gas is over.
3. Federal and state rebates are at their peak. Small-scale Technology Certificates (STCs) for solar, the NSW PDRS for heat pumps, and various state battery incentives are all currently active — but scheduled to reduce or expire between 2027–2030.
| Factor | 2023 | 2026 | Change |
|---|---|---|---|
| 10kWh battery installed | $14,000 | $8,100 | -42% |
| Residential gas ($/MJ) | $0.032 | $0.052 | +63% |
| Solar STCs value (6.6kW) | $2,800 | $2,400 | -14% |
| Heat pump PDRS rebate (NSW) | $0 | $1,200–$2,000 | New |
| Average electricity ($/kWh) | $0.32 | $0.38 | +19% |
The Optimal Electrification Sequence
Order matters. Each component in the sequence amplifies the return of the one before it.
Step 1: Solar Panels (Foundation)
Cost: $4,500–$9,000 (after STCs) for 6.6–13.2kW
Annual savings: $1,800–$3,200
Payback: 2–4 years
Solar is always first because it creates the free energy that powers everything else. Without solar, a battery is just shifting expensive grid electricity from peak to off-peak. Without solar, an EV charger costs $0.38/kWh instead of $0.00/kWh.
What we install: Tier 1 panels (Trina, Jinko, LONGi, Canadian Solar) with Fronius, SolarEdge, or Enphase inverters. System size is determined by roof space, consumption pattern, and planned future loads (battery, EV, heat pump).
Step 2: Heat Pump Hot Water (Highest ROI Single Swap)
Cost: $3,500–$5,500 installed (after STCs + PDRS)
Annual savings: $600–$1,000 vs gas, $400–$700 vs electric
Payback: 3–5 years
Hot water is 25% of the average Australian household's energy bill. A heat pump operates at COP 3.5–5.0, meaning it produces 3.5–5 units of heat for every 1 unit of electricity consumed. When powered by solar, operating cost drops to near zero.
Why second, not third: Heat pumps run primarily during the day (timer-controlled), perfectly matching solar generation. Installing solar + heat pump together captures immediate savings without needing a battery.
| System Type | Annual Running Cost | 10-Year Total Cost | CO₂ (tonnes/yr) |
|---|---|---|---|
| Gas storage (160L) | $850–$1,100 | $12,500–$16,000 | 1.8 |
| Electric resistance | $900–$1,200 | $13,000–$17,000 | 2.4 |
| Heat pump (solar-powered) | $80–$200 | $4,300–$6,500 | 0.2 |
Step 3: Battery Storage (Energy Independence)
Cost: $8,000–$14,000 for 10–15kWh (after rebates where applicable)
Annual savings: $1,200–$2,000 (grid arbitrage + self-consumption boost)
Payback: 5–8 years
A battery transforms your solar system from a daytime-only asset into a 24-hour power station. Self-consumption jumps from 30–40% (solar only) to 70–85% (solar + battery). On time-of-use tariffs, batteries also perform grid arbitrage — charging at $0.16/kWh off-peak and discharging at $0.38–$0.52/kWh peak.
Why third, not second: Without sufficient solar generation, a battery has nothing cheap to store. The optimal battery size depends on your post-solar consumption pattern, which you can only measure after solar is installed and running for 1–3 months.
Step 4: Induction Cooktop + Electric Oven (Gas Disconnection)
Cost: $2,000–$3,500 installed (appliance + electrical work)
Annual savings: $300–$500 (gas supply charge elimination + cooking energy)
Payback: 4–7 years
The real savings here are not in cooking energy (which is minimal) but in eliminating the gas supply charge ($300–$450/year) and the daily gas connection fee. Once hot water and cooking are electric, you can disconnect gas entirely.
Health bonus: The Medical Journal of Australia reports that gas cooktops contribute to 12% of childhood asthma cases in Australia. Induction eliminates indoor NO₂ and formaldehyde exposure entirely.
Step 5: EV Charger (Transport Electrification)
Cost: $1,800–$2,800 installed (7kW Level 2)
Annual savings: $1,500–$2,500 (vs petrol at $2.10/L)
Payback: 1–2 years (charger only, excluding vehicle)
An EV charged from solar costs $0.00–$0.04/km. The same EV charged from the grid at off-peak rates costs $0.03–$0.05/km. A petrol car costs $0.12–$0.18/km. The charger pays for itself in fuel savings within 12–18 months.
Why last: An EV charger draws 7–22kW — the single largest load in a home. Installing it before solar and battery means you're drawing that load from the grid at full price. With solar + battery already in place, 70–90% of your EV charging comes from free solar energy.
Real Cost Breakdown: Complete Electrification Package
| Component | Cost Range | After Rebates | Annual Savings |
|---|---|---|---|
| Solar 10kW | $7,500–$10,000 | $5,500–$8,000 | $2,200–$3,000 |
| Heat pump HW | $4,500–$5,500 | $3,000–$4,000 | $700–$1,000 |
| Battery 13.5kWh | $12,000–$14,000 | $10,000–$12,000 | $1,400–$1,800 |
| Induction + oven | $2,500–$3,500 | $2,500–$3,500 | $400–$500 |
| EV charger 7kW | $1,800–$2,800 | $1,800–$2,800 | $1,700–$2,200 |
| Total | $28,300–$35,800 | $22,800–$30,300 | $6,400–$8,500 |
Payback period: 3.5–4.7 years on the total package
10-year net benefit: $41,000–$62,000
Property value increase: $40,000–$80,000 (based on Domain Energy Efficiency Premium Report 2025)
How Cable Co Delivers 50+ Installs Per Week Per State
Scale matters in electrification. Here's why:
Volume purchasing: We install Tier 1 equipment at 15–25% below retail because manufacturers give volume pricing to contractors doing 200+ installs per month.
Integrated crews: A single Cable Co crew handles solar, battery, switchboard, EV charger, and heat pump in one or two visits. Most competitors require 3–4 separate trades and 3–4 separate site visits.
Design engineering: Every system is designed by a CEC-accredited designer (not a salesperson with a sizing app). This means optimal panel placement, correct inverter selection, and future-proofed wiring for battery and EV additions.
24/7 operations centre: Our facilities management command centre monitors every installed system remotely. If your inverter drops offline at 2am, we know before you do.
Rebates and Incentives Available in 2026
| Rebate/Incentive | Value | Eligibility | Expiry |
|---|---|---|---|
| Federal STCs (solar) | $2,000–$4,000 | All residential solar | Reducing annually to 2030 |
| Federal STCs (heat pump) | $800–$1,200 | Replacing gas/electric HW | Reducing annually to 2030 |
| NSW PDRS (heat pump) | $1,200–$2,000 | NSW residents, replacing gas | Ongoing |
| NSW ESS (insulation) | $500–$1,500 | NSW residents | Ongoing |
| VIC Solar Homes battery | $2,950 | VIC residents, income tested | Until funds exhausted |
| QLD Battery Booster | $3,000–$4,000 | QLD residents | Until funds exhausted |
| NSW EV Fleets Kick-start | $5,000/vehicle | Businesses, fleet EVs | Nov 2026 |
The 24/7 Command Centre: Why It Matters for Your Home
Cable Co doesn't just install and disappear. Our 24/7 facilities management command centre — the same infrastructure we use to manage data centres and government buildings — monitors residential solar and battery systems in real time.
What this means for you:
- Inverter faults detected and diagnosed within minutes, not days
- Battery degradation tracked against manufacturer warranty curves
- Solar generation compared against weather-adjusted expected output
- Firmware updates applied remotely without a site visit
- Annual performance reports showing actual vs projected savings
This is the same level of operational oversight we provide to Tier 4 data centres and federal government facilities — now available to residential customers at no additional cost.
Common Questions About Whole-Home Electrification
Can I electrify my home in stages or does it need to be done all at once?
Absolutely stage it. The optimal approach is to follow the sequence above over 12–24 months. Start with solar (immediate savings), add heat pump within 3 months (eliminates gas HW cost), then battery at 6–12 months (once you understand your consumption pattern). EV charger whenever you purchase an EV.
What happens to my gas connection when I go all-electric?
Once all gas appliances are replaced, contact your gas retailer to disconnect. You'll save $300–$450/year in supply charges alone. In NSW, disconnection is free if requested by the homeowner. Your gas meter will be removed within 20 business days.
Is my roof suitable for solar if it faces east or west?
East and west-facing panels produce 10–15% less annual energy than north-facing, but they produce energy at different times of day — which can actually be better for self-consumption. A split east/west array often outperforms a pure north array for households with morning and evening peak usage.
How long do solar panels and batteries actually last?
Solar panels: 25–30 year performance warranty (degradation to 80% output). Real-world data shows Tier 1 panels typically retain 90%+ output at 15 years. Batteries: 10–15 year warranty, typically 70–80% capacity retention at end of warranty. Tesla Powerwall 2 units installed in 2018 are showing 94% capacity retention in 2026.
What's the difference between Cable Co and a solar-only installer?
Most solar companies install panels and leave. Cable Co is a full-service electrical infrastructure company — we handle the switchboard upgrade, the battery wiring, the EV charger circuit, the heat pump electrical connection, and the gas disconnection coordination. One contractor, one project manager, one warranty point. Plus 24/7 monitoring from our command centre.