The Rondo Heat Battery
Low-cost, zero-emission industrial heat and power.
Zero-carbon wind and solar electricity are now lower cost than fossil fuels in many regions of the world - when the wind is blowing or the sun is out.
The Rondo Heat Battery uses electric heating elements, like those in a toaster or oven, to turn power when it’s available into high-temperature heat.
Electrical heaters (Joule heaters) convert
electrical energy into heat at 100% efficiency, and interact smoothly with grid and off-grid generation.
Low-cost, intermittent electricity turns into heat.
When power is available, the electrical heaters glow brightly and warm objects around them rapidly.
Thousands of tons of brick are heated directly by this thermal radiation, and store energy for hours or days with very low loss (less than 1% per day).
Rondo’s Heat Battery stores heat the way it’s been stored for centuries. Millions of tons of this kind of brick have been used around the world for centuries to store high-temperature heat.
Thermal radiation warms bricks at temperatures up to 1,500°C, storing heat.
Heat is delivered whenever it’s needed, on demand, start-stop or continuously.
When heat is wanted, air flows up through the brick stack and is superheated to over 1000°C. The heat delivery rate is adjusted easily by changing air flow.
Heat at the outlet is delivered at exactly the desired temperature via automated controls.
The air is eventually recycled back through the system, minimizing heat loss and maximizing efficiency.
Heat is delivered as superheated air or as superheated steam.
Rondo delivers heat at the exact temperature and pressure to meet facility demands.
The heat battery easily integrates into existing infrastructure.
The system is a drop-in, zero-emission, boiler replacement.
Air and/or steam is delivered to any industrial process 24/7
The Rondo Heat Battery is modular, scalable, and energy dense. Each individual Heat Battery delivers megawatts of heat, and larger installations are built as a battery bank.
The Rondo Heat Battery is designed to drop into existing facilities or power new-builds, and offers a fast, low-cost pathway to decarbonization and reduced operating costs.
Continuous heat from intermittent power.
24 hours a day, 365 days a year.
Unlimited cycles and 50-year life.
From calcining to cogeneration, from food processing to fuel production, Rondo’s Heat Battery delivers energy in the form needed for more than 90 percent of industrial process and power needs. Our modular units are designed to serve the unique capacity and temperature requirements of each facility, and the output is configurable to customers’ specifications.
Industries & Applications
Steel
Cement
Chemicals & Pharmaceuticals
Low-Carbon Fuels & H2
Grid Energy Storage
Power Plant Conversion Refiring for 24/7 Clean Power
Mining
CCS & DAC
Food & Beverage
District Heating
Paper & Pulp
Alumina
STEAM FOR PROCESSES OR POWER
Rondo Heat Battery can deliver dispatch-able saturated or superheated steam that matches existing infrastructure for drop in installation.
PROCESS HEAT FOR DRYING, CALCINATING, EVAPORATION ETC.
Rondo Heat Battery can directly deliver hot air at high temperatures, or a variety of other gas streams, to replace fossil fuels in direct -and indirect - fired processes.
24/7 RENEWABLE COMBINED HEAT AND POWER
Rondo Heat Battery can operate in a Combined Heat and Power (CHP) setup with a steam turbine to deliver clean heat and baseload electricity supply.
Key Benefits
The Rondo Heat Battery is a core climate solution and offers unparalleled value to the world’s most energy-intensive industries.
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Charged by intermittent renewable energy.
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Renewable energy is cheaper than status-quo fossil fuel.
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Maximize uptime by charging and delivering heat simultaneously.
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Decades-proven materials and technology utilizing modern technology advancements.
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Scale up or down to meet evolving facility needs and energy goals.
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A drop-in replacement for status-quo boilers, with a similar footprint.
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Abundant, low-cost, decades-proven materials.
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No thermal runaway, no moving parts, no flammable materials.
Products and Purchasing Options
Capital Purchase
Customers can purchase the Rondo Heat Battery for their facilities. This allows customers to capture all of the economic benefits of producing their own heat and power for less than the price of fossil fuels.
Heat as a Service Agreement
Rondo offers Heat as a Service (HaaS) agreements to deliver low and predictable power costs, without upfront capital. We work with each customer to determine the best financing structure and terms to meet their needs.