Why Commercial Buildings Must Electrify Now
Commercial buildings account for 25% of Australia's total electricity consumption and 18% of gas consumption. The CEFC's Commercial Buildings Electrification Roadmap (2026) identifies $4.7 billion in electrification opportunities across the sector — with average returns exceeding 15% IRR.
Three forces are making electrification urgent:
1. Gas price trajectory is permanent. The ACCC confirms wholesale gas prices have risen 67% since 2021. Unlike electricity (which can be generated on-site via solar), gas has no self-supply option. Every year you delay electrification, your operating costs increase.
2. NABERS ratings drive lease value. A 2025 JLL study found that commercial buildings with 5+ star NABERS Energy ratings command 8–12% lease premiums over 3-star equivalents. For a 5,000m² office, that's $200,000–$400,000/year in additional rent. Electrification is the fastest path to higher NABERS ratings.
3. Tenant expectations are shifting. 78% of ASX200 companies now have net-zero commitments. They're actively seeking buildings that support their Scope 2 and Scope 3 reporting. A gas-dependent building is increasingly unleasable to premium tenants.
"We manage 24/7 facilities for data centres and government buildings where uptime is non-negotiable. The same engineering rigour applies to commercial electrification — you can't just swap equipment and hope it works. You need load modelling, redundancy planning, and continuous monitoring. That's what our command centre delivers." — Mark Willis, Head of Renewables & Electrification, Cable Co
The Commercial Electrification Priority Sequence
Priority 1: LED Lighting (Immediate ROI)
Cost: $15–$30/m²
Savings: 50–70% of lighting energy
Payback: 1–2 years
NABERS impact: +0.5–1.0 stars
This is the lowest-hanging fruit. LED retrofits in commercial buildings typically pay for themselves within 18 months through reduced energy consumption and reduced cooling load (LEDs produce 80% less heat than fluorescent, reducing HVAC demand).
Priority 2: Heat Pump HVAC (Largest Single Impact)
Cost: $80–$150/m² (full system replacement)
Savings: 30–50% of HVAC energy + elimination of gas heating
Payback: 5–8 years
NABERS impact: +1.0–2.0 stars
HVAC represents 40–60% of commercial building energy consumption. Replacing gas boilers and inefficient chillers with modern heat pump systems (VRF/VRV) delivers the largest single improvement in building performance.
| System | COP (Heating) | COP (Cooling) | Annual Cost/m² |
|---|---|---|---|
| Gas boiler + chiller (existing) | 0.85 | 3.0 | $18–$28 |
| Heat pump VRF (new) | 4.5 | 5.5 | $8–$14 |
| Savings | — | — | $10–$14/m² |
For a 5,000m² commercial building: annual HVAC savings of $50,000–$70,000.
Priority 3: Heat Pump Hot Water (Quick Win)
Cost: $20–$40/m² (commercial heat pump system)
Savings: 60–75% of hot water energy
Payback: 3–5 years
NABERS impact: +0.3–0.5 stars
Commercial heat pump hot water systems (Sanden, Reclaim, Rheem Commercial) operate at COP 4.0–5.5, producing 4–5.5 units of heat per unit of electricity. When powered by rooftop solar, operating cost approaches zero.
Priority 4: Rooftop and Carpark Solar
Cost: $50–$100/m² of panel area (typically 30–100kW systems)
Savings: $0.25–$0.35/kWh generated (avoided grid purchase)
Payback: 3–5 years
NABERS impact: +0.5–1.5 stars (depending on system size relative to consumption)
Commercial solar systems benefit from higher self-consumption rates than residential (80–95% vs 30–40%) because commercial buildings consume energy primarily during solar generation hours.
| System Size | Annual Generation | Annual Savings | Installed Cost |
|---|---|---|---|
| 30kW | 43,800kWh | $13,100 | $35,000–$45,000 |
| 50kW | 73,000kWh | $21,900 | $55,000–$70,000 |
| 100kW | 146,000kWh | $43,800 | $100,000–$130,000 |
| 200kW | 292,000kWh | $87,600 | $180,000–$240,000 |
Priority 5: EV Charging Infrastructure
Cost: $3,000–$8,000/AC port, $45,000–$120,000/DC charger
Revenue: $2,000–$8,000/port/year (user-pays model)
Payback: 1.5–4 years (with incentives)
NABERS impact: Indirect (supports tenant sustainability goals)
EV charging is increasingly a lease requirement. Install now while government incentives cover 30–50% of costs.
The 24/7 Command Centre Approach to Commercial Electrification
Cable Co doesn't just install equipment and leave. Our facilities management command centre — the same infrastructure managing Tier 4 data centres and federal government buildings — provides continuous operational oversight for every commercial electrification project.
What this means for building owners:
| Service | What We Monitor | Response Time |
|---|---|---|
| HVAC performance | COP, runtime, fault codes, refrigerant pressure | <15 minutes |
| Solar generation | Output vs expected, inverter faults, panel degradation | <5 minutes |
| Battery cycling | State of charge, degradation curve, cell balance | Continuous |
| EV chargers | Availability, fault detection, usage analytics | <15 minutes |
| Energy consumption | Real-time vs baseline, anomaly detection | Continuous |
| NABERS tracking | Live rating estimation, improvement recommendations | Monthly report |
Why this matters: A commercial heat pump system that develops a refrigerant leak loses 20–40% efficiency before anyone notices on a quarterly energy bill. Our command centre detects the performance drop within hours and dispatches a technician before the energy waste compounds.
Compliance and Regulatory Framework
NABERS (National Australian Built Environment Rating System)
NABERS Energy ratings are now effectively mandatory for commercial buildings over 1,000m² (CBD disclosure requirements). Electrification is the most cost-effective path to higher ratings.
| Current Rating | Target Rating | Typical Investment | Annual Savings | Lease Premium |
|---|---|---|---|---|
| 2.5 stars | 4.0 stars | $120–$200/m² | $8–$14/m² | 4–6% |
| 3.0 stars | 4.5 stars | $80–$150/m² | $6–$10/m² | 6–8% |
| 3.5 stars | 5.0 stars | $60–$120/m² | $4–$8/m² | 8–10% |
| 4.0 stars | 5.5 stars | $40–$80/m² | $3–$5/m² | 10–12% |
Section J (NCC 2022) — Energy Efficiency Requirements
All new commercial buildings and major renovations must comply with Section J of the National Construction Code. Key requirements:
- Maximum glazing-to-wall ratios
- Minimum insulation R-values
- HVAC system efficiency minimums
- Lighting power density limits
- Renewable energy provisions (NCC 2025 update)
Commercial Building Disclosure (CBD) Program
Buildings over 1,000m² must disclose NABERS ratings to prospective tenants and buyers. Poor ratings directly impact leasing outcomes and property valuations.
Financial Modelling: Complete Electrification of a 5,000m² Office
Building: 5,000m² Grade B office, built 1995, gas HVAC + HW, current NABERS 3.0 stars
| Upgrade | Cost | Annual Savings | Payback |
|---|---|---|---|
| LED lighting retrofit | $100,000 | $55,000 | 1.8 years |
| Heat pump VRF HVAC | $500,000 | $65,000 | 7.7 years |
| Heat pump hot water | $120,000 | $28,000 | 4.3 years |
| 100kW rooftop solar | $120,000 | $43,800 | 2.7 years |
| 30-port EV charging | $150,000 | $36,000 | 4.2 years |
| BMS upgrade + monitoring | $80,000 | $20,000 | 4.0 years |
| Total | $1,070,000 | $247,800 | 4.3 years |
Additional value:
- NABERS improvement: 3.0 → 5.0 stars
- Lease premium (10%): +$400,000/year
- Gas supply elimination: $15,000/year saved
- Total annual benefit: $662,800
- True payback: 1.6 years (including lease premium)
Cable Co's Commercial Electrification Capability
Scale: We deliver 50+ electrification installations per week across SA, ACT, QLD, NSW, and WA — spanning residential, commercial, and industrial sectors.
24/7 operations: Our facilities management command centre runs around the clock, managing critical infrastructure for data centres and government clients. The same monitoring and response capability is available for commercial electrification projects.
Integrated delivery: Electrical infrastructure, solar, battery, HVAC, EV charging, and BMS — all under one contractor. No coordination between 5 different trades.
Compliance expertise: ASP Level 1 accredited, NECA member, ISO certified. We handle NABERS assessments, Section J compliance, network distributor applications, and council approvals.
Ongoing management: Post-installation, our command centre provides continuous performance monitoring, preventive maintenance scheduling, and NABERS rating tracking — ensuring your investment delivers its projected returns year after year.