Recommended Free Tools
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Yes—CERN is using heat from the Large Hadron Collider’s cooling system to supply a local district-heating network in Ferney-Voltaire, France. The system, which began delivering heat in mid-January 2026, captures warmth that would otherwise be released through cooling towers; it does not use particle beams to heat homes.
How does the LHC heat homes?
The Large Hadron Collider (LHC) is a 27-kilometre accelerator with eight surface points. Near Ferney-Voltaire, at Point 8, equipment produces hot water as part of its cooling process. Ordinarily, that water would pass through cooling towers, releasing heat to the atmosphere before the cooled water returned to the equipment.
CERN’s new system routes the hot water through two heat exchangers rated at 5 megawatts (MW) each. The exchangers transfer thermal energy to the town’s district-heating network, which distributes hot water to buildings. The heat comes from the accelerator’s cooling infrastructure, not directly from particle collisions. CERN’s 28 January 2026 report describes the system and its operation.
Where does the heat go, and how much can it supply?
The connection serves a new residential and commercial area in Ferney-Voltaire, France, close to LHC Point 8. CERN says the network is expected to supply heat equivalent to several thousand homes. That is an approximate equivalence, not a count of homes individually connected or a guarantee that every home receives LHC heat year-round.
#1 Best Overall
- CENTRAL AC EFFICIENCY: Transform your existing central air conditioning system into a highly efficient mini-split setup with our state-of-the-art variable speed compressor featuring Inverter Technology. Say goodbye to old, inefficient central air conditioner units.
- POWERFUL CENTRAL AIR CONDITIONING: Experience superior cooling with our 36,000 BTU unit designed to quickly and efficiently cool large spaces up to 2,000 square feet. Ideal for homes and commercial areas needing robust central air conditioning solutions.
- UNBEATABLE CENTRAL AIR HEATING: Don't let extreme cold compromise your comfort. Our Inverter Heat Pump technology delivers reliable and efficient heating, providing warmth even in conditions as low as -22F/-30C, making it a perfect complement to your central air conditioner system.
- DURABLE AND RELIABLE CENTRAL AC: Crafted with premium materials and robust construction, this unit is built to last. We offer a 10-year warranty on the compressor and a 5-year warranty on parts, providing long-term peace of mind for your central air conditioning investment.
- REPLACE YOU EXISITING CENTRAL AC SYSTEM: Recommended for professionals. Installation of this central air conditioning system requires a licensed professional. It is not suitable for DIY installation.
Ferney-Voltaire is currently using up to 5 MW from the system. CERN says output could theoretically double when both exchangers are used and the accelerators are fully operational. The two exchangers’ 5-MW ratings describe their equipment capacity; the reported current use and potential output depend on operating conditions and should not be read as continuous delivery at maximum capacity.
What happens during an LHC shutdown?
The system is designed to keep supplying heat during most of CERN’s multi-year Long Shutdown 3 (LS3). CERN expects the Point 8 installation to provide between 1 and 5 MW during the shutdown, apart from five months spread across that period. Some installations at Point 8 still need cooling even when the accelerator is not operating normally, leaving heat available for recovery.
Rank #2
- CERTIFIED ACiQ SELLERS: Everything you need for reliable HVAC solutions!
- HEATING & COOLING: This Packaged Heat Pump Unit combines efficient air conditioning and dependable heating in a single system, ideal for residential or commercial use applications.
- ENERGY EFFICIENT: 13.4 SEER2 rating and R32 refrigerant provide efficient heating and cooling while helping reduce energy consumption, delivering reliable year-round comfort with low sound operation.
- CONVENIENT CONTROLS: Non-programmable 2 Heat / 1 Cool thermostat with memory retention, compressor protection, and adjustable limits for simple and effective temperature management.
- DURABLE BUILD: Heavy-gauge galvanized steel cabinet, enhanced coil protection, and fully insulated blower compartment for reliable operation and easier maintenance.
Supply will therefore vary with the shutdown schedule and the cooling needs of equipment. CERN’s figures do not establish uninterrupted delivery at a fixed rate throughout LS3; the district network’s other heat sources and backup arrangements are not detailed in the cited report.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →What environmental benefit does CERN expect?
By replacing traditional heat sources such as gas, the project is expected to avoid thousands of tonnes of CO2 emissions. CERN presents the Ferney-Voltaire connection as one part of broader energy-recovery work, rather than a stand-alone measure of the laboratory’s overall emissions or energy use.
Rank #3
- Made from top quality and durable Materiasl
Other CERN initiatives include heat recovery at the Prévessin Data Centre, inaugurated in 2024, with a system intended to warm most buildings on that site from winter 2026/2027. CERN also describes a future plan to recover heat from cooling towers at LHC Point 1 for buildings on the Meyrin site. CERN expects these combined recovery initiatives to save 25–30 GWh per year from 2027; that is a forecast for the combined initiatives, not the Ferney-Voltaire project alone.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can waste heat from particle accelerators be reused elsewhere?
Potentially, but a project’s usefulness depends on the match between the heat source and local heating demand. Relevant considerations include how hot and reliable the recovered heat is, how much capacity can be captured, the distance to a district-heating network, seasonal demand, and what supplies heat when the source is unavailable. The recovery system also needs to coexist with the accelerator’s primary research and cooling requirements.
Rank #4
- Alexa Enabled Mini Split AC/Heating System: Integrate with voice control or app, allowing you to adjust your mini split air conditioner from anywhere. Set routines for temperature changes.
- Versatile 4-in-1 Mini Split: All-season solution with air conditioning, heat pump (functional up to 5F/-15C), dehumidifier, fan, and turbo function. Includes a DC Inverter that's UL Listed, AHRI Certified, and works with Alexa.
- Stylish & Functional Mini Split AC: Suitable for both home and business. Provides performance without compromising aesthetics. Ideal for bedrooms, living areas, stores, eateries, and warehouses.
- Installation Package Included: Includes indoor air handler, outdoor condenser, remote control, and installation kit with a 16ft. line set and communication wire. Pre-loaded with refrigerant for up to 25 ft. Note: Professional installation required.
- 5 Year Manufacturer's Warranty: Includes 5 years on parts replacement and 5 years on the compressor. Senville offers complimentary technical assistance. Labor not included.
Ferney-Voltaire has a nearby district-heating network and a Point 8 heat source. CERN’s report shows that this particular connection can provide a meaningful local supply, while its variable operating figures illustrate why output depends on accelerator and facility conditions.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallQuick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
