Vermont solar leads

Sunlight on a Burlington array

Burlington is Vermont’s largest city in the Census Bureau’s July 1, 2025 estimates. The PVWatts calculator, an NREL tool now operated by the National Laboratory of the Rockies, returns 4.32 kWh per square meter per day of solar radiation on an array in Burlington (checked October 9, 2026).

The figure comes from the calculator’s version 8 default setup: a fixed, open-rack array facing south at a 20-degree tilt, placed at Burlington’s Census gazetteer coordinates and run with a typical weather year from the National Solar Radiation Database. Hill towns, river valleys and steeper roofs give other readings, so this is a common reference value and not an estimate for a particular home.

Vermont net metering under Rule 5.100

Vermont’s Public Utility Commission regulates how net metering systems are built and run and approves each utility’s net metering tariff. Its current rule is Rule 5.100, effective March 1, 2024 (checked October 9, 2026). Under Rule 5.105, roof-mounted photovoltaic systems of any size up to 500 kW, and ground-mounted ones up to 15 kW, use a registration rather than a full application: the certificate of public good is deemed issued and construction may start on the 15th day after the form is filed. For systems up to 15 kW, the registration also serves as the interconnection application; larger systems need the utility’s interconnection approval first.

Compensation is updated every two years. In its order of May 29, 2026 in Case 26-0291-INV, the commission explains that a customer’s bill credit is built from three parts: a blended residential rate, a renewable energy credit adjustor that reduces compensation when the customer keeps the credits, and a siting adjustor that differs by system size and site. The order raised the blended rate for existing and new systems from August 1, 2026, kept the credit adjustors and lowered the siting adjustor for new Category I (up to 15 kW) and Category II systems. The new adjustors apply to systems whose complete application was filed on or after August 1, 2026.

Shared projects have narrowed. The Department of Public Service reports that Act 179 of 2024 ended virtual group net metering for all applications after December 31, 2024, with one exception for developers of affordable housing (checked October 9, 2026). For a buyer, this closes the shared-project route for most new net metering customers.

Vermont houses and the people who own them

Two in three Vermont homes are detached houses. The Census Bureau’s table B25024 (ACS 5-year 2020-2024) counts 228,189 single-family detached homes among 339,042 housing units, 67.3%, a higher share than in 31 other states. In table B25032, 168,864 of the 200,079 owner-occupied homes are detached houses, or 84.4%.

Housing age and values are on Vermont window replacement leads, and heating fuels, including the role of oil, propane and wood, are on Vermont HVAC leads; neither is repeated here.

Reading the Vermont numbers for a solar campaign

Together, the facts above describe a state of owner-occupied houses with fast-rising small-scale solar figures and a net metering program the commission revisits every two years. Three points follow for a buyer planning Vermont coverage:

• The rules change on a schedule. The May 29, 2026 order set new adjustors for applications filed from August 1, 2026, so the filing date of a homeowner’s project matters to how it is credited.
• Group projects are largely closed. Virtual group net metering ended for applications after December 31, 2024, apart from affordable housing developers (Department of Public Service), so new net metering projects are mostly systems at a single home or site.
• Houses dominate outside Burlington. Every county in the 2020-2024 ACS table except Chittenden has a detached share of owner homes above 85%.

These points describe housing, installed solar and state rules. They do not say how many solar leads exist in Vermont or where they would come from.

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