VIDEO
Why thermal batteries could replace lithium-ion batteries for energy ...
Thermal batteries could transform renewable energy storage and provide a cheaper and scalable alternative to lithium-ion technology.
Lowest-Cost Industrial Heat & Power
The Rondo Heat Battery converts intermittent wind and solar power into a simple, safe, practical, efficient, and affordable supply of continuous industrial heat and power.
Rondo reduces operating costs while eliminating emissions - and is available at scale today.
How it Works
Continuous heat and power from intermittent power. 24 hours a day, 365 days a year. Unlimited cycles and 40+ year life.
Charge 6-8 hours a day
The Rondo Heat Battery charges with intermittent electricity from local wind & solar or from the grid.
Store for hours or days
Electricity powers radiant heaters with zero loss; refractory brick is rapidly and uniformly heated to 1100 - 1500°C, and stores heat for hours or days.
Discharge 24 hours a day
The battery delivers continuous superheated air for use as process heat, steam, or electric power at over 98% efficiency.
98% energy efficient from electricity IN to heat/steam OUT
Rondo’s Investors Include Leading Global Companies
Rondo is the industry leader in Electrified Thermal Energy Storage (ETES), with over 200MWhs of announced projects and 3GWhs of partnerships.
A Rondo Heat Battery is:
Profitable
- Lowest-cost energy storage
- No “Green Premium”
- Reduce energy price volatility risk
Sustainable
- 24/7 Zero-carbon heat
- Eliminate scope 1 & 2 emissions
- No NOx, SOx, or particulate matter
Flexible
- Easy siting, fast time-to-power
- Easy integration, drop-in replacement
- Modular and scalable
Safe
- Non-pressurized system
- Free of hazardous chemicals, gases, liquids
- No risk of fires or explosions
Proven
- Centuries-proven refractory brick storage
- Commercially operating in the field, today
- Backed by world-leading partners
Future-Proof
- Charges from intermittent renewables
- Access the lowest cost power in history
- Unlimited cycles, no storage degradation
Our Customers
Rondo has announced 11 commercial developments, including 8 RHB deployments, more than $160 million in funding, and 4 partnerships, all across 5 different industries: food & beverage, cement, fuel, chemical, and textile production.
Our customers include industry leaders who trust Rondo to deliver low-cost, reliable, zero-carbon industrial heat and power to a wide variety of facilities and applications.
The Rondo Heat Battery comes in two models
Ready to be deployed and scalable to meet the evolving needs of your facility and production goals.
RHB100
- Storage: 100 MWh
- Discharge: 7 MWt
- Charge: Up to 20MWac
- Heat Delivered: Continuously 24/7
- Cycles: Unlimited, 40+ year lifespan
- Emissions: Zero
RHB300
- Storage: 300 MWh
- Discharge: 20 MWt
- Charge: Up to 70MWac
- Heat Delivered: Continuously 24/7
- Cycles: Unlimited, 40+ year lifespan
- Emissions: Zero
News & Announcements
of
Unrelenting quality standards ensure our customers’ status as leaders, no matter their industry.
Aluminum
Cement
Chemicals
Consumer Goods
Direct Air Capture
District Energy
Ethanol
Food & Beverage
General & Specialty Manufacturing
Mining
Paper & Pulp
Petrochemicals
Pharmaceuticals
Steel
Sustainable Aviation Fuels
Textiles
Resources
VIDEO
TED Talk: Can a Simple Brick Be the Next Great Battery? John O'Donnel...
The world relies on manufacturing, and manufacturing relies on heat — a massive contributor to global carbon emissions, responsible for a quarter of the world's fossil fuel use. Energy entrepreneur...
VIDEO
NBC: These bricks can hold as much energy as a Tesla
Once a brick gets hot enough, it effectively becomes a battery to store energy. That’s the low-tech approach by California-based Rondo Energy toward eliminating 15% of global emissions. By using cl...
PODCAST
Catalyst: Solving the conundrum of industrial heat
In this episode, Shayle talks to John O’Donnell, co-founder and CEO of Rondo Energy, a thermal storage startup. (Shayle’s venture capital firm, Energy Impact Partners, has made investments in Rondo...
PODCAST
Why electrifying industrial heat is such a big deal
A full quarter of global energy use goes toward heat that powers industrial processes. To provide clean industrial heat but avoid the variability often associated with renewable energy, a company c...
VIDEO
How 3000 Degree Bricks Will End Battery Storage
Rondo Energy have recently received millions of dollars in investments for their thermal battery which uses superheated bricks. When heating is required, they make much more sense than lithium-ion ...
Download the Rondo Heat Battery Data Sheet
To learn more about the Rondo Heat Battery product line, please download our data sheet here.