Maine was the second state in the country to legalize plug-in solar — and the first to write UL 3700 directly into its law. But passing LD 1730 was only the beginning. With some of the highest electricity rates in the nation, a housing stock that is among the oldest in the country, and a deeply rural geography that makes electricians hard to find, Maine's advocates knew that getting the law right was only half the battle. The real test would be making it work on the ground.

In this episode of our Behind the Bill series, we go deep on the story of Maine's LD 1730 with three people who built it from the grassroots up. Representative Gary Friedmann, who sponsored the bill in the legislature, explains why plug-in solar is an affordability tool first and a climate tool second. Amy Eshoo of Maine Climate Action Now describes the coalition-building process and why she's urging consumers to wait until the market is ready. And Beth Woolfolk of A Climate to Thrive and the Post Road Foundation explains the bulk-purchase model she's developing to solve the rural electrician problem — and why legal access doesn't automatically mean practical access.

Maine's two-tier system — DIY for systems under 420 watts, licensed electrician required for systems up to 1,200 watts — is one of the most thoughtful safety frameworks any state has enacted. But it also creates real barriers for the people who need this technology most: renters in old buildings, residents of rural communities, and lower-income households who can't easily afford an electrician visit. This episode is the honest story of what happens after a law passes.

Chapter Markers (Timestamps)

• 00:00 – Intro: The Law Passed. Now the Real Work Begins.
• 02:14 – Segment 1: From Germany to Utah to Maine — The Origin Story
• 04:35 – Segment 2: Affordability, Access, and Energy Democracy
• 07:02 – Segment 3: The Safety Compromise — Two Tiers, One Goal
• 09:53 – Segment 4: Utilities, UL 3700, and the Notification Distinction
• 11:51 – Segment 5: Implementation Is the Real Test
• 14:55 – Segment 6: Renters, Old Houses, and the Battery Question
• 17:49 – Segment 7: A Small System, A Larger Future — Five Lessons for Every State
• 21:27 – The Bottom Line & Outro

Key Takeaways

• A law is only the beginning. Maine proved that passing the bill is just step one. The real work is implementation — finding UL 3700-compliant products, training electricians, and creating consumer education materials that ordinary people can actually understand and act on.
• Safety requires compromise. Maine advocates started with a pure plug-and-play vision, but after engaging with electricians and utilities, they created a two-tier system. Under 420 watts is DIY. Over 420 watts requires a licensed electrician on a dedicated circuit. It adds cost and complexity, but it ensures the rollout is safe and credible.
• Legal access doesn't always equal practical access. Maine's old housing stock means many renters may not have the outdoor outlets they need. Policymakers have to think about the physical reality of the buildings people live in — not just the text of the law.

Links & Resources

• Read the full article: Behind the Bill: How Maine Built a Plug-In Solar Law — and Now Has to Make It Work
• Track plug-in solar legislation in your state: PluginSolarUS State Tracker
• Estimate your savings with Maine's 27.9¢/kWh rate: PluginSolarUS Savings Calculator
• Learn more about plug-in solar safety and UL 3700: How Plug-In Solar Works

Plug-In Solar, Explained is the simple way to understand plug-in solar, home energy, and the policies shaping America's next consumer energy movement.

Learn more at PluginSolarUS.com.