About us

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Italian manufacturer of sodium-ion energy storage systems

HEIWIT S.p.A. is an Italian manufacturer of sodium-ion storage systems for residential, commercial and industrial photovoltaic installations. We develop, assemble and commission our systems in Italy, with our registered office at Varese and our operational headquarters at Caronno Pertusella.

A clarification that we feel is necessary: Heiwit manufactures the energy storage system — the battery pack, BMS, control electronics and integration with the inverter — but not the electrochemical cell, which we purchase from qualified sodium-ion cell suppliers. It is the same distinction that exists in the lithium world between those who manufacture the cells and those who manufacture residential storage systems.

We drive the energy transition, offering innovative and sustainable solutions. Find out more about who we are and how we contribute to a greener future.

• HEIWIT is registered with ARERA as an energy producer and seller.
• HEIWIT is an innovative start-up company registered in chamber of commerce
• HEIWIT is associated with CONFINDUSTRIA VARESE
• HEIWIT is a member of SOLAR ITALY, the only association in Italy dedicated exclusively to photovoltaics and technology integration for intelligent energy management
• HEIWIT is a member of the Lombardy Energy Cleantech Cluster (LE2C). Visit our profile

Heiwit S.p.A.
Via Carlo Robbioni, 2 21100 Varese (VA)
P.I. 03980400125 REA VA-393186
pec: [email protected] Unique Code USAL8PV
Telephone 0332.1730555 r.a.

What we do

Heiwit is an innovative start-up born with the clear vision of contributing to the decarbonisation of the energy system by focusing on an alternative, safe and economically sustainable technology: the sodium ion batteries.

We are dedicated to the development, production and marketing of energy storage systems based on this emerging technology, suitable for both industrial and residential use. Our batteries offer a real alternative to lithium-based solutions, eliminating the critical issues of raw material sourcing and ensuring high performance, safety and sustainability.

We are a green project perfectly aligned to the objectives of the directive Energy-Climate 2030 of the European Union, with the aim of making energy storage affordable, safe and environmentally friendly.

Vision and mission

Our philosophy is based on’energy independence and optimal integration with production from renewable sources, without relying on government incentives.

La mission of Heiwit is to accelerate the transition to a decentralised and sustainable energy model by offering sodium ion batteries designed for durability, safety, economy and environmental friendliness.

We believe in a European storage technology supply chain, free of Asian dependence and centred on more readily available and recyclable materials.

Benefits for our customers

For companies, our sodium batteries offer a concrete opportunity to reduce energy costs, increase self-consumption from renewable sources and improve one's ESG profile, without compromising security or availability.

For the residential market, we offer affordable solutions that make energy self-sufficiency a reality, even for those who do not have high budgets or concerns about the safety of traditional batteries.

For qualified investors, Heiwit represents a opportunities with a high environmental and technological impactan investment in the future of clean energy. With our industrial expansion plan and the growing demand for storage, we offer competitive returns while contributing to the protection of the planet.

The numbers of the transition