Rondo Energy is a Heat Battery company founded in 2020 with the goal of lowering carbon industrial heat use. They regard themselves as being the company that delivers one of the world's lowest-cost zero-carbon industrial heat.

Their product is the Rondo Heat Battery which powers industrial processes with renewable electricity, cutting energy costs and emissions. They deliver solutions to large-scale industrial energy needs both as significant capital projects and on a Heat as a Service (HaaS) basis. The Rondo Heat Battery provides temperatures up to 1500°C or 2700°F.

The battery comes in two models, the RHB100 and RHB300:

RHB100

• Storage: 130 MWh
• Discharge: Configurable up to 10MWt
• Charge: Configurable up to 30MWac

RHB300

• Storage: 340 MWh
• Discharge: Configurable up to 30MWt
• Charge: Configurable up to 100MWac

The battery is modular and scalable where each individual heat battery delivers a megawatt of heat and larger installations are built as battery banks.

Rondo’s first pilot project (2MWh) came online early in 2023 and is operating. They have another project scheduled for 2024 which would be a full-scale heat battery system.

Rondo offers Heat as a Service (HaaS) agreements to deliver predictable power costs, without upfront capital. They work with customers to determine different financing structures and terms.

• 24/7 storage: The air used to heat is eventually recycled back through the system, minimizing heat loss. Thousands of tons of bricks are heated directly by thermal radiation, and store energy for hours or days with a claimed heat loss of less than 1% per day
• Optimized Delivery: Heat is delivered whenever it’s needed, on-demand, start-stop, or continuously. The heat delivery rate is adjusted by changing airflow
• AI usage: Heat at the outlet is delivered at the desired temperature via automated AI-patented controls
• Safety: Without fire or thermal runaway concerns, Rondo’s unpressurized system is intrinsically safe to meet or exceed safety standards
• Maintenance: RHBs have high durability, require low annual downtime, are cheap to maintain, and have a 40+ year lifespan
• Output: Heat can be delivered as superheated air or as superheated steam

Rondo’s mission is to help the most energy-intensive industries to reach zero carbon emissions, at a lower cost than fossil fuels.

By powering industrial processes with renewable electricity the company aims to cut energy costs and emissions on hard to decarbonize industries.

Rondo's battery delivers energy in the form needed for more than 90 percent of industrial processes and power needs. Their modular units are designed to serve the unique capacity and temperature requirements of different facilities, and the output is configurable to customer specifications. Some industries where it's useful to implement their technologies are mining, grid energy storage, food & beverage, CHPs, and low carbon fuels, among others.