Dozens of cities and towns across the Commonwealth have already converted their streetlights to LEDs. Some early adopters chose fixtures with a Correlated Color Temperature (CCT) of 4000 Kelvin, which emits unacceptable levels of blue light. More recently, many towns have opted for LED streetlights with a CCT of 3000K or even 2700K. These emit far less blue light and meet the IDA’s CCT benchmark for dark-sky-friendly lighting.
Here’s a map of LED streetlight conversions as of November 2017, compiled by the Metropolitan Area Planning Council:
The table below is a work in progress. Our hope is to make this a complete listing of all LED streetlight conversions either finished or in progress. If you can provide data for more entries, please send it to Kelly Beatty (kbeatty at darksky dot org).
| LED Streetlight Installations in Massachusetts | ||||||||
| Town | Year | Model |
Watts | CCT | Number | Install cost | Savings/yr | Info |
| Chelmsford | 2013 | Cree BXSPR | 25 | 4000K | 2,023 | $272,000 | 348,500 kWh | — |
| Gloucester | 2016 | — | — | 3000K | 2,000 | $900,000 | — | link |
| Melrose | 2016 | — | 19 | 3000K | — | $925,000 | — | — |
| Salem | 2017 | — | 19 | 3000K | — | — | — | link |
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