Recently, we shared a video from Cleve Hill, the first large-scale solar farm to come online, highlighting the stark differences between small-scale and large-scale solar. Beyond the enormous east–west facing panels, security fencing and CCTV, what stood out most was the noise, which some of you commented on.
In case you missed it, here’s the video: Cleve Hill Solar Farm.
At 5:09-5:48 in the video, the speaker says: “The one thing that really strikes me…is that the ringing, the buzz or whirr or singing if you like is so loud…It’s going to be a constant ringing in your ears like tinnitus. That’s quite worrying.”
Solar energy is often promoted as the clean, green solution to climate change, but for rural communities like ours in South Cambridgeshire, the arrival of large-scale solar farms can bring unexpected challenges. While small rooftop panels operate quietly, massive developments such as Kingsway, Sunnica and East Park raise serious concerns, particularly around noise pollution.
Why does this matter?
Chronic noise: More than a nuisance
A 2025 study published in Nature shows that chronic noise from traffic, industry or other sources can harm mental health by disrupting sleep, raising stress hormones, and triggering brain inflammation and oxidative stress, increasing the risk of anxiety, depression and suicide as well as behavioural problems in children and adolescents.
This is supported by research from the American Public Health Association, the University of California and Harvard, which links chronic low-level noise to cardiovascular disease, stress-related heart conditions and cognitive or emotional disorders in children and adolescents. In particular, researchers linked cardiovascular deaths to noise at night as well as during the day and found a stronger association in women.
According to the World Health Organization, the effects of persistent noise go far beyond hearing loss. It can disrupt sleep, raise blood pressure and heart rate and increase cognitive stress. Over time, this can amplify social, educational and workplace challenges, particularly in quieter rural areas where ambient noise levels are generally low.
Solar farms DO make a noise
Solar energy is often seen as a quiet, green alternative to fossil fuels. Unlike wind turbines, solar panels have no moving parts and don’t produce any sound. But the size of the equipment for large-scale solar farms, such as inverters and transformers, can generate noticeable noise.
Solar panels work by generating direct current (DC) electricity, which must be converted to alternating current (AC) by inverters to feed the grid. This conversion process creates a low-frequency “hum” at 120 Hz and its harmonics. Transformers, which step up voltage for the grid, add more hum through electromagnetic forces, and cooling fans contribute additional broadband noise. While much of this equipment can be sited away from residents, noise barriers or enclosures are often needed to reduce impact.
The article also states that: “One thing in favor of solar facilities is that most of them only operate during the day.” However, some facilities with battery energy storage systems (BESS) could result in transformer and inverter operation during the night, and that changes everything. There is a real need for acoustic evaluation and noise control with respect to nighttime operations of solar energy components
For rural communities where background noise is normally low, even a low level of sound can be noticeable and disruptive. Listen here: https://www.youtube.com/watch?v=a2KGnYxNeG8
The Legal Angle
The law provides some protection. Statutory nuisance rules and precautionary injunctions allow local authorities, or even residents, to challenge noise before it causes harm. Recent Planning Inspectorate decisions, such as the dismissal of a solar appeal at Alfreton in Derbyshire, have acknowledged the impacts of “a dominant industrial installation with associated noise from inverters” and the resulting change in landscape character.
A more balanced approach to green energy
CPRE supports renewable energy, but they believe solar panels belong on rooftops and other underused areas, not productive farmland.
Proper planning, siting and noise mitigation can make large-scale solar farms quieter, but awareness of the issue is key for protecting communities and rural life.
If you’d like to get involved in the Kingsway Solar Community Action group, please contact us.
