Heatcube: Thermal Energy Storage Solution

Reduce energy costs

Reduce the cost of energy by charging Heatcube when electricity is cheaper at night, and take advantage of competitive prices.

Decarbonize heat production

Use Heatcube to run production without producing CO2. No emissions mean another saving – no additional CO2 taxes.

Secure energy supply

Heat stored means it is available when you need it. With a secure energy supply, fluctuations in the energy market have less impact, leaving pricing margins safe from political influence.

Remove fossil fuels

Charge with electricity from renewables. Being able to charge and discharge Heatcube simultaneously means there is flexibility to accommodate the intermittence of solar and wind power sources.

AI-enabled thermal battery

Kyoto’s DataOps platform brings a new era of operational excellence, reducing operational expenses and offering state-of-the-art preventive and predictive maintenance..

A balancing asset

The advantages of Heatcube: from rapid response times and enhanced grid stability to seamless integration with local renewable energy sources. Unlock its value as a crucial asset in the AFRR and MFRR markets

Heatcube facts and figures

10-30 MW

charging capacity

16-120* MWh

storage capacity (*customization)

up to 20 MW

discharge capacity

135-400 °C

temperature of steam

> 93%

Round-trip efficiency (RTE)

< 90 sec

Charge response time (ramp up time)

~250 kWh/m2

low storage footprint

>25 years

long lifetime

Experience a transformative edge with Kyoto’s Heatcube as we introduce real-time monitoring and control through digital innovation.

Kyoto’s DataOps platform, powered by Cognite Data Fusion®, brings a new era of operational excellence, reducing operational expenses and offering state-of-the-art preventive and predictive maintenance.

This integration not only enhances operational efficiency but also positions Heatcube to align with emerging power market players, providing flexibility and potential new revenue streams for industrial plant owners.

With real-time monitoring and control through digital innovation, Heatcube delivers precise heat storage optimization. Seamlessly integrate with variable renewable sources and respond to demand effectively.

The information shown in the image is based on anticipated accumulated results for our most common Heatcube found in our product brochure.

Phone frame designed by zlatko_plamenov / Freepik

Paper, pulp and print

Heat is used to dry the pulp and heat the calendar rolls. It is also needed for recycled newsprint, specialty papers and packaging.

Chemical and petrochemical

Most of the heat is used for ammonia production by steam reforming of natural gas, steam cracking of naphtha and steam cracking of gas oil.

Food

Cooking, preheating, washing and pasteurization are the main areas for heat demand. A big share of energy is also used for refrigeration.

Iron and steel

Steel production requires very high temperatures to heat and melt iron ore. We can save a lot of energy by pre-heating the production parts.

Non-metallic minerals

Most of the heat demand in the sector comes from cement production and requires temperatures of over 400°C.

Non-ferrous metals

Heat is used almost entirely in specific electrical processes. It is required mostly in the aluminum, copper and zinc production.

This is a very important milestone for the project. It shows the close collaboration between Kyoto and Aalborg CSP to venture into this important market of storing excess electricity into usable heat, which we can use to transform and transition the energy supply for not only Northern Europe but the rest of the world.

Svante Bundgaard, CEO of Aalborg CSP

It is exciting to work together with the young and dynamic team of Kyoto and you can really feel the energy and the eagerness of the entire project team to contribute to a greener future. It gives me personally extra motivation for the entire project.

Magne Ryholt, Høglund Project Manager

We are proud of the smooth and successful introduction of the world’s largest electrical heater for molten salt and are looking forward to the large-scale commercial roll-out of Heatcube as well as the further development of the technology together with Kyoto Group.

Christopher Molnar, Managing Director of Vulcanic, a Spirax Sarco company

The partnership with Kyoto and its Heatcube thermal storage solution is a further step for Iberdrola in its mission to decarbonize the economy through electrification. Storage is one of the major challenges in the energy transition, hence this collaboration with the Norwegian group will be key to our strategy

Fernando Mateo, Global Head of Industrial Decarbonization at Iberdrola

Based on one cycle per day, the round trip efficiency from electricity to steam is minimum 93%.

Heatcube is equipped with a 20 MW steam generation system. The temperature and pressure do depend on the feed water supply and energy storage volume, but our standard configuration (64 MWh storage) delivers more than 12 hours of 7.5 tons per hour at 16 bar(a), with a feedwater temperature of 100°C (equals 5 MWh for 12 hours).

Heatcube is supplied with a Battery Management System (BMS), which can be connected with the local Energy Management System (EMS) using a standard industry interface. The storage tanks do not require any preventive or periodic maintenance. The auxiliary systems (pumps, valves, etc) require minimal ongoing maintenance and training will be provided.

For an industrial facility with steam demand covered by an electric boiler, the energy cost is directly related to the average and/or peak power prices in the region it is located. With Heatcube, we can offer significant energy savings by load-shifting the electricity demand from high-priced to low-priced hours in the power market.

The increasing share of intermittent renewable power production together with decommissioning of fossil-based power generation creates more price volatility in the power markets. In the hours with high wind and solar power output and low demand, the power prices become very low, while in hours with less wind and solar, the power prices are consequently very high. With Heatcube, we are utilizing the increasing price volatility in the power markets to store energy in hours with high renewable production and low prices. When charging Heatcube with cheap electricity from excess renewable power production, we can deliver renewable heat whenever needed at a very low cost. At the same time, we are replacing fossil fuels with renewable electricity as the energy source for heat production, and so removing close to all carbon emissions associated with the industrial heat demand.

Heatcube is designed with a steam temperature range from 135°C to 400°C and can generate up to 20MW of discharge capacity. The saturated steam temperature is between 135°C and 212°C, with a steam pressure between 8 and 20 bar(a). To achieve 400°C with a pressure 3 - 40 bar(a) (superheated steam) a superheater can be added to Heatcube steam generator.

Tim de Haas

Chief Commercial Officer (CCO)
Get in touch

Pedro Montoro Sánchez

Commercial Director Iberia
Get in touch

Elena Davydova

Business Support Associate
Get in touch

Lars Martinussen

Commercial Director Northern Europe
Get in touch

FEATURES IN PUBLICATIONS

Kyoto in the news

Heatcube

The Thermal Battery for our future

Providing high volume, stable, electrified heat to industry – the missing link between renewable energy and heat demand.

Reliable green energy at low cost

Reduce energy costs

Decarbonize heat production

Secure energy supply

Remove fossil fuels

AI-enabled thermal battery

A balancing asset

Heatcube facts and figures

Inside Heatcube

Converting green energy into stable heat production.

Renewable energy sources, like wind and solar, are intermittent suppliers. Heatcube is the solution to stabilizing this supply to meet mass industrial demand.

Digitization with Kyoto’s DataOps platform

INDUSTRIES

Who is Heatcube for?

All industries that need low-cost, reliable heat are Heatcube industries.

Paper, pulp and print

Chemical and petrochemical

Food

Iron and steel

Non-metallic minerals

Non-ferrous metals

Does it pay off to switch to renewable heat?

Find out how much you can save with Heatcube.

Your Heatcube options

Product or service: Heatcube how you need it

Heat as a Product (HaaP) or Heat as a Service (HaaS).

Heat as a Product (HaaP)

Heat as a Service (HaaS)

Research & reports

Heatcube in print: facts & figures

The green energy landscape is constantly shifting. Read about how Heatcube fits into industrial decarbonization

Heatcube at a Glance

Heating the way forward - how to effectively decarbonize process heat

How to start using renewable resources – and stop wasting your own

FAQs

Answers to the most common customer questions about Heatcube.

How efficient is Heatcube?

How much steam can a Heatcube generate?

How do you operate Heatcube?

How can you generate savings for an industrial facility with an electric boiler?

How do you decarbonize industrial heat demand in a cost competitive way?

What is the steam temperature range of Heatcube?

Do you want to know more?

Get in touch with our commercial experts:

Tim de Haas

Pedro Montoro Sánchez

Elena Davydova

Lars Martinussen

Heatcube chronicle

Inspiration through Stories

Join Heatcube journey through our stories

Kyoto Group: Annual report 2023 and business update

Kyoto Group and Energy Partner jointly sign term sheet for Heat Purchase Agreement with global leading consumer goods company in Europe

Connect with Kyoto

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FEATURES IN PUBLICATIONS

Kyoto in the news

Forbes

Finansavisen

Teknisk Ukeblad

DN.se

Energy Monitor

Energi & Miljö