Manufactures adsorption chillers (Cold Engine) that generate grid-independent cooling and ice from solar or waste heat.

FrostForge SA

Vessy (Geneva), SwitzerlandNew on Amplifa

2024Founded

SA (joint-stock company, Switzerland),Legal form

−30 °CLaboratory operation of the first Cold Engine

90–120 °COperating temperature of the heat source

About FrostForge

FrostForge SA is a Swiss company founded in 2024 in Vessy near Geneva that develops and manufactures refrigeration machines based on the adsorption principle. The so-called Cold Engine converts solar or waste heat at 90 to 120 °C directly into cooling – without a compressor, without combustion and without a grid connection. The cooling produced is stored as chilled water or as ice and supplied depending on the application at temperatures of +7 °C (comfort cooling), +2 to +8 °C (medical/pharma), 0 °C (fresh goods) or −18 °C (frozen food). In the laboratory, the first machine built already reaches −30 °C. The technology is marketed, among other things, as a Cold-as-a-Service model in which cooling is billed per kWh; the first paying pilot customer is an energy utility. Design, development and manufacturing take place in Switzerland; a heat exchanger protected by a patent application (WO 2026/171993) is the core of the technology.

Site: Vessy
Processes: Manufacture of adsorption chillers (Cold Engine / chiller), Cold-as-a-Service (cooling as a service, billing per kWh), Development of adsorption chillers (Cold Engine), Ice storage / cold storage, Refrigerated food storage, Building cooling (in development)
Materials: Metal (heat exchanger)
Founded: 2024
Industries: Food / cold storage warehouses, Medical/pharma (cold chain +2 to +8 °C), Data centers, Building air conditioning, Energy utilities

01
Engineering & Development (CAD, heat exchangers)
02
Manufacturing of assemblies (including heat exchangers, pressure vessels with
03
Assembly of the Cold Engine
04
Commissioning & pilot operation
05
Cold-as-a-Service (billing per kWh)

Technology & Processes

Metall

Metal (heat exchanger)

Material of the heat exchanger assemblies; exact specification not published.

Locations

Vessy

Headquarters, development and manufacturing

Materials: Metal (heat exchanger)

Cold Engine prototype construction
Laboratory for functional proofs

Inside the production

Urban application fields for grid-independent cooling (illustration)

Cooling generation without a grid – concept illustration

Industries

Food / cold storage warehousesMedical/pharma (cold chain +2 to +8 °C)Data centersBuilding air conditioningEnergy utilities

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Manufacture of adsorption chillers (Cold Engine / chiller)Assembly	–	–	–	–	Metal (heat exchanger, not further specified)

Additional services

Cold-as-a-Service (cooling as a service, billing per kWh)Development of adsorption chillers (Cold Engine)Ice storage / cold storageRefrigerated food storageBuilding cooling (in development)

Reference customers

An energy utility company (paying pilot, name not disclosed)

History

2024
FrostForge SA founded in Geneva (whiteboard idea; Supported Startup Stage 1)
2024-11
Ice produced in the laboratory for the first time – functional proof of the Cold Engine principle
2025
First Cold Engine built; reaches −30 °C in the laboratory
2026-08
International patent application WO 2026/171993 (heat exchanger) published
2026
First paying pilot with an energy utility (Cold-as-a-Service model)