The next-generation heat battery

Heat your home, not the planet

Store heat, use it only when you need it

The transition from fossil fuels to renewable energy presents a new issue: the mismatch between supply and demand. Storage is the answer! The Borg stores sustainably generated energy in a buffer tank underground. In your garden. It's a sensible and elegant solution: at times of lots of sun and wind, you store sustainable energy in your buffer. When it's dark and dull, you use the heat from the buffer to heat your home and hot water. Good for the environment plus it will save you money!

Beat the energy game, right in your own home!

The Borg T4: innovative, underground heat storage for individual homes. Sustainable heat storage in plain water, future-proof and produced with maximum consideration for the environment. It won't come as a surprise that we are raving about this product. Now it's up to you to check out the benefits and judge for yourself!

Large storage capacity, low footprint

The buffer tank is low-tech and filled with water. The climate impact of production is many times smaller compared to an electric battery.

Real impact

Heating is the biggest energy consumer in our homes. Sustainability in this department makes a real difference.

Cost-effectiveness

Storing energy as heat is more efficient and economical than storing it in an electric battery.

Saves space

The buffer tank is placed underground. This means you possess a huge storage capacity that doesn't take up any space in your home!

User-friendly

Everything works automatically. You only need to set the desired temperature of your living room or your shower.

Always sustainable heating

Always heat your home sustainably, even in times without plenty of sun and wind.

Developed in collaboration with TNO & Delft University of Technology

Developed in collaboration with TNO, Dreamhûs, and Delft University of Technology and engineered to last for at least 50 years.

Large capacity, tiny footprint

The buffer tank is low-tech. Water is essentially the main component which means the climate impact of production is many times smaller than in the case of electric batteries. The heat battery is placed under the ground. This can be under the driveway, under the house (under the foundation in the case of new-build houses), or in the garden. Fortunately, therefore, it does not take up space in your home.

True impact

Heating is the biggest energy consumer in our homes. Sustainability in this department makes a real difference. For you and the generations after you. Contribute to a cleaner and environmentally friendly future.

Relieves the power grid

The Borg controls energy consumption in your home in a smart manner. It chooses the most favorable moments to buy and/or the moment when the CO2 footprint is the lowest. By optimizing the supply and demand of energy, we relieve the grid.

Retail

Storage of heat underground. No complicated procedures at the neighborhood level. You only have to deal with your garden or home! Your heat storage. Good for the environment and your wallet.

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Real Estate Professionals

Heat storage in an underground buffer tank of 4,000 liters of water. Sustainable and cost-saving. A new product in a new market that is for grabs. Curious about the opportunities for your project?

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Green Innovators; narratives of change

"We have been looking for a while for a fitting solution to make our home more sustainable. The gardens around our house are important to us. Therefore, it is vital that the solution is aesthetically pleasing. Initially, the thought of having everything overturned when installing a Borg worried us a bit. By now we are completely convinced. The Borg team thinks along with us, taking our feelings into account. We are proud that we will hopefully be one of the first Borg owners and users!"

Bart Veldman Green Innovator from the early days

"Storage is critical in the transition to a more sustainable energy mix. We are impressed with Borg's technology and software integration, which is actually relatively simple and robust. We look forward to the day when energy storage becomes the standard within the built environment."

Eduard Meijer CEO Navus Ventures

"In these times of change, it is important to speed up the energy transition. Borg has a smart solution to store sustainable heat. We are proud to help Borg take the next step in bringing this solution to the market."

Ian de Graaff Investment Manager OostNL

"Energy storage is an essential part of the transition to a sustainable energy supply. The clever technology that Borg has developed offers many opportunities to store large quantities of the type of energy most consumed in households - namely heat - safely and affordably. We are happy to contribute to this company."

Stefan van Eijk Fund Manager ifund Foundation

"As a rental company with social aspirations, we view sustainable housing projects as one of our biggest challenges. In our DreamHûs - three homes from the 1970s at The Green Village - we challenge innovators to test innovations that are affordable, scalable, and applicable. We have successfully tested the Borg in the DreamHûs. We are now exploring if it can also succeed in our homes in Friesland."

Joris Hoeksema Coordinator Innovation WoonFriesland