On 12 March 2019 the Selectboard of Norwich, Vermont, voted 4 to 1 in favour of a revised outdoor lighting ordinance. The vote followed eighteen months of work by a five-person citizens' committee and three public hearings. The vote passed with two abstentions noted in the minutes.
Norwich is a town of 3,414 residents (2020 census) on the east bank of the Connecticut River, directly across from Hanover, New Hampshire, and the campus of Dartmouth College. The town has no traffic lights and one general store, Dan and Whit's, which has been at the same intersection since 1891.
The 2019 ordinance is, by the standards of American municipal lighting law, unusually strict. It limits all new exterior lighting to fully shielded, downward-directed fixtures with a correlated colour temperature of 2700 Kelvin or lower. It caps the total exterior lumen output for any new residential property at 8,000 lumens.
It also requires that all non-essential exterior lighting be extinguished between 22:00 and 06:00. Essential, in the ordinance's definition, means lighting that is necessary for active safety purposes or for an actively occupied entrance.
The motion was introduced by Steffen Parratt, who chaired the citizens' committee and who has lived in Norwich since 1994. Parratt, an electrical engineer by training, told Last Light in March 2026 that the ordinance had been drafted with three concerns in mind: night-sky visibility, ecological impact on insect populations, and the documented health effects of blue-rich light at night.
Norwich is not certified as a dark-sky community by the International Dark-Sky Association. The town's planners considered the certification and decided against pursuing it formally. The reasoning, according to current planning director Rebecca Castle, was that the certification process required ongoing reporting that the town did not have staff to maintain.
What it does have is data. The town's lister and the planning office have, since 2020, kept a record of every new exterior lighting permit issued and every complaint received. As of January 2026, the office had issued 197 permits under the new ordinance and received 14 formal complaints.
Of those 14 complaints, 11 were resolved by retrofit or shielding modifications. Two were resolved by removal of the offending fixture. One remains in mediation.
Compliance, Castle said, has been higher than the committee initially expected. The principal reason, she believes, is that LED fixtures meeting the ordinance's specifications are now both affordable and widely available. In 2019, that was less obviously the case.
The committee took advice from John Barentine, then with the International Dark-Sky Association, during the drafting phase. Barentine, who now runs an independent consulting practice, told Last Light by phone that Norwich's ordinance is among the cleanest he has reviewed at the municipal level.
What makes it clean, in his view, is that it sets numerical limits rather than aspirations. The 8,000-lumen residential cap, the 2700K colour temperature limit, the curfew window — all are testable. A code-enforcement officer can measure them with a handheld meter.
Most American municipal dark-sky ordinances, Barentine said, fail at the testability step. They invoke principles without setting numbers, or they set numbers without an enforcement mechanism. Norwich avoided both pitfalls.
The ordinance is not without critics. At the third public hearing in February 2019, two residents argued that the curfew window was paternalistic and that property owners should be free to light their property as they wished. The argument did not carry.
A third resident raised concerns about safety, specifically the safety of late-night walkers and drivers. The committee responded with a study of accident statistics from comparable Vermont towns, which suggested no correlation between exterior residential lighting and pedestrian or vehicular safety.
Whether the ordinance has measurably darkened the local sky is a harder question. The town does not have a long-term SQM monitoring programme. Anecdotal observations from a small group of amateur astronomers in the area, including the Norwich Astronomy Club's three regular observers, suggest a modest improvement.
The Norwich club's regular observing site is at the Montshire Museum of Science, which sits at the river. Readings taken irregularly between 2016 and 2025 show a range of 20.8 to 21.3 magnitudes per square arcsecond. The high end has improved by perhaps 0.2 magnitudes over the period.
That is a small number. It is also, in a part of the country where almost every other municipal sky has measurably brightened over the same period, a significant one.
Norwich's ordinance has been the model for two other Vermont towns. Thetford adopted a similar measure in 2022. Strafford passed a closely modelled version in 2024. Both are small. Both border Norwich.
Parratt, asked what advice he would give to another small town considering a similar ordinance, said the most important step was the citizens' committee phase. The Selectboard, he said, will pass what the citizens have written if the citizens have done their homework. Skip the citizens' committee, he said, and the ordinance will not pass at all.
He also said that the work of the committee, in retrospect, had been the most enjoyable civic work he had ever done. Eighteen months, five people, a quiet room above the Tracy Hall meeting space. They had argued about colour temperature for three meetings running. He missed it.
