MARSTEK Launches Next-Gen VENUS Energy Storage Systems at EnerGaïa 2025 Forum

MARSTEK Unveils Next-Generation VENUS Energy Storage Systems at the EnerGaïa Forum 2025

On December 10, 2025, MARSTEK, a prominent name in the energy storage industry, showcased its latest innovations at the EnerGaïa renewable energy forum held in Montpellier, France. The highlight of their presentation was the introduction of the new VENUS energy storage systems, designed to meet the evolving needs of energy management in homes and businesses.

The VENUS G is a groundbreaking system that operates at 500V with a powerful 5kW output. It is engineered for residential energy management and offers several significant features, including a peak output capability of 10kW and support for 7.5kW input from photovoltaic (PV) systems. This flexibility allows it to integrate seamlessly with notable brands such as Enphase and SolarEdge, making it a versatile choice for consumers.

One of the standout aspects of the VENUS G is its expandable battery capacity, which ranges from 5kWh to an impressive 30kWh. Thanks to the innovative 500V V-Boost technology, each battery unit operates independently to prevent imbalance, thus ensuring optimal performance. In addition, the backup switching time is remarkably quick at less than 10 milliseconds, which is crucial for users seeking uninterrupted service during outages. The unit's installation is simplified with Wirelite wiring, and users can conveniently monitor their energy usage through a smart app.

Another notable product introduced by MARSTEK is the 7kW single-phase EV charger, designed to pair effectively with the MARS I PLUS system. This EV charger is not only adaptable, offering adjustable power settings from 1.4kW to 7.4kW but also includes features for safe and efficient use both indoors and outdoors, thanks to its IP54 and IK10 ratings. The design includes a single-cable connection and comes with ISO 15118 hardware readiness, setting the stage for future-proof EV integration.

The VENUS D, also featured at the forum, is an AC version of MARSTEK's stackable energy storage solutions. With a compact design, the VENUS D offers bidirectional on-grid power capabilities of 2.5kW as well as backup capabilities. Each module stores 2.56kWh and can be expanded to a total capacity of 15.36kWh, making it a viable option for varying energy needs. The unit is engineered to be fully compatible with existing solar systems and utilizes AI-driven forecasting and optimization strategies for managing energy costs effectively.

Visitors to the EnerGaïa forum were invited to explore these new products at MARSTEK's booth, B29, in Hall B3. Alongside the new VENUS range, the company also showcased its Balcony ESS solutions and residential ESS offerings, including the MARS I PLUS system.

Established in 2009, MARSTEK has positioned itself as a leader in the energy storage landscape by blending research and development with manufacturing to deliver integrated solutions. Their product line is extensive, including residential and balcony energy storage solutions, portable power stations, power banks, and rechargeable batteries. The company’s commitment to providing smart, affordable energy solutions is evident as it seeks to empower every household with access to intelligent energy management.

For eco-conscious consumers and those looking to optimize their energy usage, the recent advancements by MARSTEK at the EnerGaïa Forum reinforce the company’s dedication to paving the way in the renewable energy sector. As energy storage technology continues to evolve, MARSTEK remains at the forefront, with a clear vision for a sustainable and energy-efficient future.