OR HB3966

Requires solar energy contractors and installers to hold appropriate licenses from the Department of Consumer and Business Services for electrical or limited renewable energy work

Mandates detailed written disclosures before selling, leasing, or entering power purchase agreements for residential solar systems, including purchase price, dealer fees, estimated energy production, warranty information, and federal tax credit eligibility warnings

Requires installation contracts exceeding $1,000 to include itemized costs, payment schedules, component specifications, financing terms, energy production estimates using industry-standard methodology, and mandatory customer acknowledgment notices

Grants customers a three-day rescission period after signing installation contracts, during which contractors cannot collect payments, charge cancellation fees, or begin work

Classifies violations of these requirements as unlawful trade practices under ORS 646.608, making contractors liable for actual damages and subject to enforcement under Oregon's Unlawful Trade Practices Act