Cambridge residents need to be aware of the Zero Cambridge/Concord Turnpike Tracer Lane Solar Project under review by the Lexington Planning Board. The project is planned in a forestry area next to Lexington conservation land, the drinking water of the Cambridge reservoir and residential property in Waltham and Lincoln. The project would cut down approximately 800 trees over more than 9 acres and build a 4,000-panel solar installation. Imagine the tree loss and wildlife displacement.
The solar panels will be on a steep hill that slopes toward the reservoir, so there could create be runoff issues and soil erosion into the reservoir. Because of the proximity to the reservoir, there will be no foam fire suppression installed or used should there be a fire โย foam could contaminate the water. Should there be a fire, and solar panels do catch fire more frequently than people think, the agreed-upon strategy by responding Lexington and Waltham fire departments is to โlet it burn itself out.โ You cannot fight an electrical fire with water, so all the responding firefighters will do is wet the ground near the abutting homes in hopes the fire will not spread. (It is proposed the panels will have a 50-foot setback from the residential property lines; much of the area between the property line and panel placement will be cleared.) This is the plan!
If there were a fire, the plume of smoke will contain lead and cadmium, carcinogens that would settle on the reservoir and contaminate the water. The smoke could travel for 1.25 miles and leave residue on homes in Lexington, Lincoln and Waltham. The potential for physical risk to firefighters is high. They will be exposed to toxic smoke, working on an extremely slippery and steep incline. The sole entry and exit to this solar field will be 20-foot-wide gravel path installed across a residential Waltham property owned by the developer.
Not usually mentioned: Solar panels deteriorate. They have a potential lifespan of 20 to 30 years. I mention this because due to the extreme slope of the installation, deterioration of the panels and the associated hazardous chemicals that could run off into the Cambridge reservoir. The Cambridge Water Department is aware of the project and is trying to ensure the reservoir is protected, but the Lexington Planning Board is indicating approval of the project.
The developer owns the land to be developed in Lexington, but lives in Cambridge and bought a home in Waltham โ we believe this is solely to access the property in Lexington, which is not accessible because you need to cross protected wetlands or be granted access to use a road next to the Cambridge reservoir.
Waltham residents are not against solar. They have it on their homes. This is not a Nimby opposition. It is just a bad project with multiple problems. People may say solar panels donโt catch fire, and trains donโt get derailed โ until they do. Look at the life and health impacts from that.
Sometimes a proposed project is just too risky, and trading off one hazard for another is never a good thing. The only person who would benefit from this project is the developer, and at the expense of many others.
Information is at WalthamNeighborsForSafeSolar.org.
Ed Sullivan, Waltham
The writer is a core group member of Waltham Neighbors For Safe Solar.




I tried to find some data on fires involving solar panels. One source: https://pv-magazine-usa.com/2019/08/22/there-are-solar-power-fires-per-year/
Sounds like:
* 0.005% of rooftop installations in Japan, over 10 year period (ballparkโmight be a bit higher if there was a lot of growth).
* 0.006% in Germany, over 20 year period.
Love solar, not a fan of clear cutting trees for it. how about just putting it on top of more houses?
Wow, if you think solar panels are a fire hazard, wait until you hear about gasoline!
You must be outraged by the 6 gas stations within about a mile from the Cambridge reservoir. We’d better close all of them down!
The tanker trucks carrying toxic and highly flammable fossil fuels right by the reservoir every day are a much bigger risk to the environment.
And by all means, please prove to us that you’re not a NIMBY anti-environmentalist by installing solar panels on your own rooftop.
But in order to stop global warming, we’re going to need more than just rooftop solar. Even if we installed solar panels on every single roof of every single building in the entire state, that would only provide about 50% of current electric demand. https://www.nrel.gov/docs/fy16osti/65298.pdf
And in order to stop burning fossil fuels in our homes and in our cars, we’re going to have to switch to electric cars and electric heat pumps, which will dramatically drive up grid usage.
We’re going to need a lot more solar farms to stop rising sea levels from swallowing Boston, and this project is a great start.
What @ab said.
The author is worried about what would happen in case of a solar panel fire??!! Fossil fuels are highly toxic and flammable, and they are literally baking the planet.
Your Waltham home with (I presume) manicured lawn is a bad project with multiple problemsโฆ yet there it is.
The tree cutting is definitely a concern in the scheme of things, removing trees on an incline WILL result in soil erosion even if restraining walls are put in place, over time. One above average snow fall winter and the risk to reservoir becomes obvious. How much liability insurance will this developer carry and will it be enough to restore all the neighboring properties (including the city for the reservoir)? What is the state EPA opinion of the project and what if any requirements are They placing on the site?
The real solution is obvious. We just need less people. Covid was a good start but we can do better….for the planet!
ab- I think you could have made your point without the tone, shaming and name – calling. Why is “Nimby” the answer to everything that has questions? The author has a right to bring it to our attention. It is up to us to do the research without sarcasm. In the meantime, have you been reading about batteries exploding on e-bikes and killing people? we have to look at everything.