ITALIAN ENERGY STORAGE COMPANY
Sodium-ion batteries for photovoltaics
HEIWIT develops and manufactures sodium-ion energy storage systems for residential, commercial and industrial solar PV systems, and sells them to the Heiwit installer network.
No lithium, no cobalt. Even with a three-phase inverter.
Artificial intelligence
Heiwit AI-Care
The Smart Energy Manager that controls your home's energy: more self-consumption, protected batteries, energy sold when it's most valuable.
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The benefits of evolving energy
Security
Batteries with high
thermal stability.
Efficiency
Energy efficiency above 95 per cent.
Duration
Over 6,500 estimated cycles at 90% DoD with 70% residual capacity (NA-48V210Ah, layered-oxide cells).
Materials
No lithium or cobalt, designed for recovery at end of life.
Technology
Heiwit innovation
Sodium ion batteries employ an advanced electrochemical process to store and release energy, for a constant and reliable energy supply. These batteries are designed to operate over a wide temperature range: discharging from -25 to +60 °C, charging from 0 to +60 °C.
Artificial intelligence
Heiwit AI-Care
The Smart Energy Manager that controls your home's energy: more self-consumption, protected batteries, energy sold when its value is highest.
The ideal choice for applications that demand high reliability and safety
High thermal stability
The sodium-ion technology used by HEIWIT is designed for stationary energy storage applications, where safety and thermal stability are key parameters.
Recyclability
Wide operating range
The HEIWIT systems are designed to operate over a wide temperature range, including under particularly severe conditions, in accordance with the product specifications.
Lithium-free and cobalt-free
The sodium-ion chemistry used in HEIWIT systems does not use lithium or cobalt, relying instead on more abundant raw materials.
Long cycle life
Sodium-ion technology is particularly suited to stationary energy storage, where lifespan, safety and thermal behaviour matter more than weight and volume.
resources
Applications of 10 kWh Sodium Ion Batteries
Our numbers
Choosing Heiwit is a data-driven decision: here are the numbers of our system.
6500+ estimated cycles at 90% DoD with 70% residual capacity (NA-48V210Ah)
10 kWh storage capacity
10 ms UPS response time
5000W Power Maximum
95% Energy efficiency rating
10 years Heiwit warranty on battery and inverter (for the battery, or 25 MWh delivered if sooner), service in Italy
Remote production monitoring
Mobile application
Thanks to our 6 kW hybrid inverter, production and battery charge data can be consulted in real time.
Optimising consumption
You can decide whether to prioritise self-consumption or battery energy storage according to your needs
Testimonies and installations
What they say about Sodium ion batteries
Find out more
Learn more about the potential of our sodium ion batteries and discover how they can revolutionise your approach to energy.
blog
Our Guides
Fotovoltaico e accumulo al sodio: due installazioni Heiwit firmate Tony e Ale Impianti
A San Giuliano Milanese e Canegrate, in provincia di Milano, Tony e Ale...
Inverter Virgo e accumulo al sodio Heiwit per l’impianto di Chianti Energy a Montespertoli
A Poppiano, nel comune di Montespertoli (Firenze), Chianti Energy ha...
pv magazine Italia interviews Heiwit: the NFPP battery arriving in 2027 and the planned factory in Lombardy
pv magazine Italia's interview with Heiwit: NFPP cells rated for 9,000 cycles at 95% DoD with 70% residual capacity, a 2,500 m² plant in the province of Varese from 2027, and the stated limits of sodium.
The energy that fuels tomorrow
The future of energy is the reality we are building, one ray of sunshine at a time.
Any questions?Contact us!
We are here to help you with any questions or doubts you may have.
Please do not hesitate to contact us at any time.
Are you looking for information on prices or do you want to buy a battery?
Heiwit does not sell directly to private customers. Our sodium-ion batteries are installed exclusively by the Heiwit network of installers, who will support you from the initial consultation through to installation.
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