The Business Case for Commercial Solar in SA
South Australia has some of the highest commercial electricity rates in the country — and some of the best solar irradiance. That combination makes commercial solar and battery energy storage systems (BESS) one of the most straightforward capital investments a facility owner can make.
The numbers have shifted dramatically over the past two years. Panel costs have continued to fall, battery prices have dropped by roughly 30%, and the SA Government's incentive programs have expanded to include larger commercial installations.
Typical ROI by Facility Type
Industrial and Warehouse
- System size: 100–300 kW solar + 100–200 kWh battery
- Annual savings: $45,000–$120,000
- Payback period: 3–4 years
- Key driver: High daytime consumption aligns perfectly with solar generation
Commercial Office
- System size: 30–100 kW solar + 50–100 kWh battery
- Annual savings: $15,000–$45,000
- Payback period: 4–5 years
- Key driver: Battery shifts solar generation to cover afternoon peak tariffs
Cold Storage and Food Production
- System size: 150–500 kW solar + 200–500 kWh battery
- Annual savings: $60,000–$200,000
- Payback period: 3–4 years
- Key driver: Constant refrigeration load means very high self-consumption ratios
Retail and Hospitality
- System size: 20–80 kW solar + 30–80 kWh battery
- Annual savings: $10,000–$35,000
- Payback period: 4–6 years
- Key driver: Demand charge reduction through battery peak shaving
Beyond the Payback Period
Once the system is paid off — typically within 3–5 years — you're generating effectively free electricity for the remaining 20+ year life of the panels. Battery systems typically last 10–15 years before replacement.
Over a 25-year analysis period, a well-designed commercial system can deliver 4–6x return on the initial investment.
What CHS Delivers
Our solar and BESS service covers the full lifecycle:
- Site assessment — roof structural survey, electrical capacity review, shading analysis
- System design — optimised for your specific load profile and tariff structure
- Installation — CEC-accredited installers, all permits and grid connection handled
- Commissioning — performance verification and monitoring system setup
- Ongoing maintenance — panel cleaning, inverter servicing, battery health monitoring
We design systems around your actual consumption data, not generic assumptions. That's the difference between a system that looks good on paper and one that delivers the projected returns.
If you're considering solar or battery storage for your commercial facility, contact our team for a no-obligation site assessment and ROI analysis.