At the time your utility approves your interconnection, an installation commonly lasts one to a few days for residential rooftop; longer for ground mount. Regional Rebates and Incentives: Some local utilities and municipalities offer supplemental rebates and incentives for solar installations. It’s well worth checking with your local utility supplier https://100kwsolarsystemsperth.blogspot.com/2025/03/total-solars-solar-excellence-in.html