U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Free Light Bulb Swap and LED Popup Store!


5 Callender St., at the Cambridge Winter Farmer's Market inside the gym of the Cambridge Community Center

Get directions


  • City Wide


Jessica Nahigian


Calendar event image

Bring up to 3 of your old light bulbs to the Cambridge Winter Farmer's Market and swap them for free LED replacements! This bulb swap is part of the City of Cambridge's 100% LED Campaign, which encourages residents to change all of their incandescent and CFL bulbs over to LEDs, which use six times less energy. Please note that only incandescent and CFL light bulbs can be swapped during this exchange.

Residents can also buy all of the other bulbs they need to go 100% LED at a popup store. Not sure which bulbs to get? Bring your current bulbs and staff can help you pick out the right replacements.

For more information about the 100% LED campaign, please visit cambridgema.gov/LED or contact:

Page was last modified on 7/24/2023 11:02 PM
Contact Us

How can we help?

Please provide as much detail below as possible so City staff can respond to your inquiry:

As a governmental entity, the Massachusetts Public Records Law applies to records made or received by the City. Any information received through use of this site is subject to the same provisions as information provided on paper.

Read our complete privacy statement

Service Requests

Enter a service request via SeeClickFix for things like missed trash pickups, potholes, etc.