How it Works

Seasonal Thermal Energy Storage is the most energy efficient solution for the heating of buildings. It can be deployed from small to large scale and allows the heat production to be located close to where it is needed. 

How Does Seasonal Thermal Energy Storage Work?

The cycle begins in spring when the sun heats solar collectors. This heat is used to heat the building and provide hot water. If more heat is needed, the heat pump is fed with warm water ensuring it maintains maximum efficiency during operation. Any excess heat produced during spring will be used to begin the charge of the BTES.

During summer, the charging rate increases, with heat only going to the building when needed. The arrival of colder autumn days will trigger the beginning of the discharge phase. Heat from the BTES will be used directly for heating, or passed to the heat pump when needed.

Other sources of heat can also be utilised with seasonal thermal energy storage, such as industrial waste heat, waste heat from energy production or excess district heating. These forms of waste heat are often dumped as they are not useful without having a storage solution available. They are generally free of charge and can replace the need to pay for oil and gas for heating purposes. If an additional heat stream is connected, the smart controller will utilise that heat in the most efficient way possible.

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The Components

Heliostorage provides the technology needed to implement a full seasonal thermal energy storage solution. This includes solar thermal collectors, a smart thermal controller and our unique borehole thermal energy storage (BTES). The heat pump is an optional component.

Solar Thermal Collectors

Our solar collectors have a patented profile that allows maximum capture of heat during the entire day. The heat can be sent directly to the buildings hot water tank or to thermal storage for later use.

Solar Thermal Roof
Borehole Thermal Energy Storage

Borehole Thermal Energy Storage

The BTES receives heat and utilises that heat to warm the surrounding soil converting the earth into a thermal battery. The core of the BTES remains hot year round and is discharged when needed.

Heat Pump (Optional)

The heat pump is an optional component in the solution that can be used when the solar plus BTES combination does not meet the full heating demand. We can utilise an existing heat pump or provide one from a number of leading manufacturers.

Smart Controller

Smart Controller

Our smart controller is the brain of the system. It monitors all heat flows and directs heat as necessary. The controllers algorithms ensure the system maintains optimal efficiency throughout the year.

Solar Thermal Collectors

Our solar collectors have a patented profile that allows maximum capture of heat during the entire day. The heat can be sent directly to the buildings hot water tank or to thermal storage for later use.

Solar Thermal Roof

Borehole Thermal Energy Storage

The BTES receives heat and utilises that heat to warm the surrounding soil converting the earth into a thermal battery. The core of the BTES remains hot year round and is discharged when needed.

Borehole Thermal Energy Storage

Heat Pump (Optional)

The heat pump is an optional component in the solution that can be used when the solar plus BTES combination does not meet the full heating demand. We can utilise an existing heat pump or provide one from a number of leading manufacturers.

Smart Controller

Our smart controller is the brain of the system. It monitors all heat flows and directs heat as necessary. The controllers algorithms ensure the system maintains optimal efficiency throughout the year.

Smart Controller

Applications

The Heliostorage solution is ideally suited to a number of different heating applications. The first being commercial heating for business premises. The second is for industrial processes, where industrial waste heat can be saved and utilised later when needed. Lastly for district heating networks, where the solution can be distributed throughout the district heating network to store excess heat for later use.

Click on the boxes below to find out more about these applications.

Commercial Heating

Industrial Waste Heat

Distributed District Heating

Commercial Heating

Industrial Waste Heat

Distributed District Heating

Looking for an Alternative Heating Solution?

If you have a heating demand in excess of 300 MWh and would like to see if Heliostorage could help you to lower your energy bill, complete the questionnaire and we will get back to you shortly.