Standardizing Solar Quotes
This year at the Intersolar conference, we had the pleasure of having lunch with Guy Snow, a seasoned installer from Las Vegas. As an installer, he works directly with homeowners and, therefore, has agood understanding of where the general public stands on solar education. We talked about what he sees as the major knowledge gaps for homeowners and what installers can do to provide accurate and transparent solar quotes.
System size in DC Stand Test Conditions (STC) kilowatts;
- System size in AC California Energy Commission (CEC) kilowatts;
- What percentage of the current electricity usage the solar power system will replace;
- Total Cost both before and after all rebates;
- Cost per kW in both STC-DC and CEC-AC;
- The annual estimated production of the solar power system in kWh;
- Cost per kWh;
- Solar panels – number, make, model, and rating;
- Inverter – type, size, and efficiency;
- Where all components are manufactured;
- Estimated monthly cost savings;
- Financial metrics – payback period, and return on investment (ROI) and internal rate of return (IRR).
- Monthly lease or PPA payment;
- Annual percentage increase in payments;
- Downpayment options;
- Term of lease or PPA;
- 15-20 year breakdown detailing costs and savings;
- All services included or excluded (i.e., monitoring and maintenance);
- All terms and conditions for early termination of contract, home sale, and end of lease/PPA options.
If you are an installer, let us know what you think of this proposal. What would you add or remove?
By Matthew Ryder-Smith
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