Introduction

Salt batteries are emerging as one of the best solutions for energy storage in photovoltaic systems. But not all salt batteries are the same: Heiwit's technology represents a breakthrough compared to older generation models, overcoming the limitations of high operating temperatures. In this article, we will explore how Heiwit's salt batteries for photovoltaic systems can offer a sustainable, safe and highly efficient alternative for those wishing to maximise self-consumption and reduce their dependence on the electricity grid.

1. Why choose salt batteries for a photovoltaic system?

• Maximising self-consumptionWith a photovoltaic system, the aim is to make the most of the solar energy produced. Salt batteries allow the energy generated during the day to be stored and used during the evening or night, reducing the need to purchase energy from the grid.
• Reducing energy costsHaving a storage system means you can cover a significant part of your energy consumption with self-produced energy, reducing your electricity bill. Salt batteries, with their long service life, are a long-term investment offering substantial savings.
• Environmental SustainabilitySalt batteries are made from abundant, non-toxic materials, offering a more environmentally friendly alternative to conventional lithium batteries. This makes them ideal for those looking for an environmentally friendly solution for their photovoltaic system.

2. The new generation of Heiwit salt batteries

• An evolution from traditional models: In the past, salt batteries were considered less practical for domestic or commercial use due to the need to reach an operating temperature of around 250°C to function properly. This required heating and insulation systems, increasing the cost and complexity of installation.
• Heiwit technology: efficiency at room temperatureHeiwit's new salt batteries, on the other hand, represent a true revolution. Thanks to an innovative material formulation and advanced design, these batteries can operate at room temperature, eliminating the need for heating systems. This not only simplifies installation, but also reduces operating costs and improves overall system safety.
• A reliable solution for residential and commercial installations: Heiwit salt batteries are ideal for those who own a residential or commercial photovoltaic system and wish to increase their energy independence. With a capacity of 10 kWh to 150kWh, these batteries can handle a significant portion of daily consumption, making the photovoltaic system even more efficient.

3. Heiwit salt batteries vs. old technology: a comparison

• Operating temperature: Older generation salt batteries required constant heating to function properly, with operating temperatures around 250°C. This resulted in a loss of energy efficiency and increased management complexity. Heiwit batteries, on the other hand, are designed to operate at ambient temperatures, eliminating the need for a heating system.
• Security and stabilityHeiwit salt batteries are inherently safer due to the use of non-flammable solid electrolytes. Unlike lithium batteries, they pose no risk of explosion or fire. This feature, combined with the ability to operate at room temperature, makes them one of the safest options for energy storage.
• Maintenance costs: The new generation salt batteries require minimal maintenance compared to previous models, which needed frequent checks to ensure proper functioning of the heating system. With Heiwit, storage management becomes simple and worry-free.

4. Advantages of Heiwit salt batteries for your photovoltaic system

• Longer service life: Heiwit sodium-ion batteries have a service life of more than 20 years, thanks to their ability to maintain high performance even after thousands of charge and discharge cycles. This makes them an ideal solution for those looking for a long-lasting storage system.
• Charge and discharge efficiency: With high conversion efficiency, Heiwit salt batteries ensure that more of the energy produced by your PV system is actually stored and utilised, reducing energy losses.
• Eco-compatibility and recyclabilityHeiwit salt batteries are fully recyclable, helping to reduce the environmental impact at the end of their life cycle. Opting for these batteries means making a conscious choice for the future of our planet by reducing dependence on critical materials such as lithium.

5. How to integrate Heiwit salt batteries into your photovoltaic system

• Compatibility Requirements: Heiwit batteries can be integrated with most existing photovoltaic systems as long as they are not incentivised by the First Energy Account. This limitation applies to comply with current regulations. On the other hand, there are no problems for installations incentivised by subsequent Energy Accounts or for those not incentivised.
• Modifying the inverter: For the installation of Heiwit batteries, it is necessary to replace the existing inverter with a hybrid inverter, which can handle both the production of the PV system and the storage of energy in the batteries. In addition, a retrofit inverter will need to be added to optimise the operation of the system.
• Bureaucratic Procedures: When installing Heiwit salt batteries, it is necessary to notify the GSE (Gestore dei Servizi Energetici) and E-Distribuzione. This ensures that everything complies with Italian regulations. Your trusted installer can handle this paperwork, or the Heiwit team is ready to assist you.

6. Salt batteries for photovoltaic systems: a worthwhile investment

• Long-term savingsHeiwit salt batteries allow you to make the most of the energy produced by your photovoltaic system, reducing your dependence on the grid and significantly lowering your electricity bill. The financial savings from self-consumption translate into a significant return on investment over the years.
• Reducing CO2 emissionsA photovoltaic system with a storage system helps to reduce CO2 emissions by using renewable energy instead of fossil fuels. Salt batteries, due to their environmentally friendly composition, further amplify this positive effect on the environment.
• Available bonuses and incentives: Although salt batteries cannot be installed on systems incentivised by the First Energy Account, there are various incentives and benefits for those who wish to add a storage system to their photovoltaic system. Contact us to find out what opportunities are available and how to take advantage of them.

7. Contact us about Heiwit salt batteries

• Request a free consultationIf you have a photovoltaic system and would like to find out how our salt batteries can improve your energy efficiency, please do not hesitate to contact us. We offer free consultations to help you understand which solution is best suited to your needs.
• Rely on our certified installersOur network of certified installers is ready to support you during all stages of installation, ensuring a quick and easy process.

Conclusion

Salt batteries for photovoltaic systems from Heiwit represent one of the most advanced and sustainable solutions on the market. Thanks to their ability to operate at room temperature and their long service life, they offer a practical and cost-effective alternative to traditional storage technologies. Find out how Heiwit salt batteries can transform your PV system into a truly independent and sustainable energy source.