In 2026, commercial solar decisions will depend on your site’s electricity use, roof or ground space, export limits, network connection requirements and whether battery storage is worthwhile. Eligible systems up to 100 kW may receive Small-scale Technology Certificates, while larger projects may qualify for Large-scale Generation Certificates; eligibility and certificate values can change under the scheme rules. A proposal should account for equipment, installation, maintenance, finance, GST and tax treatment, not just the headline payback period. Compare independent quotes and confirm current incentive and connection requirements with the Clean Energy Regulator, your network and a qualified solar professional.