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The future of heating: Thermal energy storage

Writer's picture: Melchior KrijgsmanMelchior Krijgsman

Updated: 1 day ago

Antora's energy storage uses carbon blocks and promises to reach temperatures up to 1800°C

The whole world is betting on low-cost renewable energy, so factories should as well. Thermal Energy Storage (TES) will be the game changer by enabling efficient energy storage and use. By leveraging TES, industries can store and use renewable energy efficiently, cutting emissions and costs while ensuring reliable operations. See what Entropic can do for you. Click here

The Game-Changer: Why TES is the Future

TES isn’t just another technology; it’s the best bet for industries embracing renewable energy. Here’s why:

  • Eliminates Waste: Captures and reuses heat that would otherwise be lost.

  • Boosts Sustainability: Enables 24/7 use of renewable energy.

  • Saves Costs: Reduces reliance on expensive on-demand energy.

  • Enhances Grid Stability: Acts as a buffer, smoothing out energy supply and demand.

TES turns the challenge of intermittency in renewables into a competitive advantage for industries.

Industrial Applications: TES in Action

TES transforms how industries use energy, especially in heat-intensive processes. Here are its most impactful applications:

  1. High-Temperature Processes: Steel, cement, and chemical industries use TES to maintain consistent high heat levels, slashing fossil fuel dependency.

  2. Waste Heat Recovery: Captures excess heat from industrial systems and repurposes it for processes like preheating or steam generation.

  3. Renewable Energy Integration: Stores renewable energy as heat, ensuring uninterrupted industrial operations.

  4. Energy Cost Optimization: Shifts energy use to off-peak times, significantly reducing costs.


Breaking Down TES: Types and Temperature Ranges

Thermal Energy Storage comes in three main flavors, each tailored for specific industrial needs:

1. Sensible Heat Storage

  • How it Works: Stores heat by increasing the temperature of materials like water, molten salts, or concrete.

  • Temperature Range: Up to 1500°C.

  • Best For: Industrial heat recovery, solar thermal applications, and district heating.


2. Latent Heat Storage

  • How it Works: Uses phase change materials (PCMs) to store energy during melting or solidifying.

  • Temperature Range: -100°C to 1000°C.

  • Best For: Medium-temperature industrial processes, air conditioning, and cold storage.


3. Thermochemical Storage

  • How it Works: Leverages reversible chemical reactions to store and release heat.

  • Temperature Range: 100°C to 1800°C.

  • Best For: High-temperature applications, seasonal storage, and hydrogen production.


Each TES type offers unique advantages, making it possible to customize solutions for a wide array of industrial processes.


Who’s Leading the TES Revolution?

To help industries adopt TES, leading suppliers are stepping up with innovative solutions. Here’s a snapshot of the top players:

Supplier

TES Type

Temperature Range

Sizing

Technology Readiness Level (TRL)

Calmac

Latent (Ice Storage)

-10°C to 0°C

100 kWh to 10 MWh

TRL 9

Sunamp

Latent (PCM)

Up to 120°C

Residential to Modular

TRL 8

SaltX

Thermochemical (Salt)

200°C to 500°C

Modular

TRL 7

EnergyNest

Sensible (Concrete)

Up to 400°C

Industrial-scale

TRL 9

BrabeTech

Sensible (Molten Salt)

Up to 450°C

Industrial-scale

TRL 7

Azelio

Latent (Aluminum Alloy)

Up to 600°C

Modular, 13 kWh

TRL 9

Lumenion

Sensible (Steel Core)

Up to 650°C

Modular, 40 MWh

TRL 8

Echogen

Thermochemical (CO2 Cycle)

Up to 700°C

Medium to Large-scale

TRL 6

Stiesdal Storage

Sensible (Crushed Rocks)

Up to 800°C

Large-scale

TRL 7

Rondo Energy

Sensible (Brick-based)

Up to 1500°C

Industrial-scale

TRL 8

Steam Accumulator

Sensible (Steam)

Up to 300°C

Customizable

TRL 9

Antora Energy

Sensible (Solid Carbon)

Up to 1800°C

Modular

TRL 7

Kraftblock

Sensible (Synthetic Pellets)

Up to 1300°C

Modular

TRL 7


What TES solutions will fit within your factory?

Industrial leaders have a golden opportunity to turn TES into a cornerstone of their energy strategy. By adopting this technology, they can decarbonize operations, cut costs, and future-proof their business. Thermal Energy Storage isn’t just the heating solution of the future—it’s the smart solution for today. Simulating how a TES system would function in your facility and integrate with existing equipment is crucial. See how Entropic can help you and plan a meeting HERE.

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