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Group Solar Purchasing. Making Solar Energy More Affordable. Driving down costs will greatly increase addressable market for residential PV. Source: ThinkEquity “Think Greentech ” Feb 2010 . Average Price Residential Fix Mounted System - $/ Watt Installed
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Group Solar Purchasing Making Solar Energy More Affordable
Driving down costs will greatly increase addressable market for residential PV Source: ThinkEquity “Think Greentech” Feb 2010
Average Price Residential Fix Mounted System - $/Watt Installed Systems co funded by Focus on Energy • $4.75 Commercial (50 kW) • $3.25 Utility (1 MW)
Different name, same outcome • “Aggregate purchasing” • “Bulk solar” • “Solarize” • “Group solar” • “Collaborative purchasing”
Why Collaborative Purchasing Works • Efficient • Aggregated development process • Expert + collective experiences • Assurances, safety in numbers • Affordable • Pre-negotiated discounts • Competitive bidding process • Faster Adoption • Limited time offers
Models • Community-based • Fee-based • Solar contractor sponsored
MadiSUN Case Study • 250 homeowners • 100 workshop attendees • 20 participants • 4 installers • Average price: $5.48 per watt • Average savings: 20% • Impact: 78kW, 10% increase in solar PV
Key design considerations(pre-commitment approach) • Level of commitment needed from participants • Decision-making process
Key design considerations (pre-select installer approach) • Selection committee make-up • Weighted value of selection criteria • Expected level of participation • One or multiple installers
Key Lessons Learned • Identify key responsibilities • Sponsor • Project leader • Technical expert • Limited time offer • Index pricing
In the works… • WECC Commercial Group Buy • MREA/Milwaukee Shines • MadiSUN/Willy Street Grocery Cooperative • Marshfield Sustainability Committee
Questions • Bryant Moroder • bryant@madisun.org