On September 26, 2025, MARSTEK successfully hosted its new product launch event in France, where several flagship energy storage solutions made their debut. As a leading brand in the residential energy storage sector, MARSTEK upholds the product philosophy of “Plug in. WireLite.” and introduced a new lineup of products and solutions tailored to the French market. The event highlighted the VENUS A, VENUS D, VENUS E 3.0, VENUS X, and MARS I PLUS, underscoring MARSTEK’s commitment to delivering innovative and practical energy solutions for French households.

Watch the highlights of the MARSTEK France Launch Event on YouTube and relive the unveiling of our latest energy storage innovations.

Watch on YouTube

[Product Overview]

VENUS A: An all-in-one 2.4 kW balcony energy storage system with 4 MPPT and 1.2 kW AC coupling. Designed with plug-and-play functionality, integration, and modularity, its capacity can be flexibly expanded from 2.12 kWh to 12.72 kWh. It supports 2.4 kW PV input across four channels, 2.2 kW AC coupling, 1.2 kW bidirectional grid connectivity, and up to 1.44 kW backup power. Equipped with AI-based energy management, it maximizes efficiency and optimizes household electricity costs. At this launch event, VENUS A stood out as one of France’s most cost-effective balcony energy storage systems, with a retail price of €599.

VENUS D: A 4 kW balcony energy storage system with 4 MPPT and 2.2 kW AC coupling. Designed for plug-and-play integration with existing PV systems, it supports up to 4 kW PV input, 2.2 kW bidirectional AC coupling, and 2.2 kW off-grid output (peaking at 2.5 kW). Its stackable design allows flexible capacity expansion from 2.56 kWh to 15.36 kWh. Paired with smart meters and AI-based energy management, it helps households lower electricity costs and reduce carbon emissions.

VENUS E Gen 3.0: A plug-in AC battery energy storage system adopting AC coupling technology, with 2.5 kW bidirectional grid connection. Fully compatible with existing photovoltaic systems, it offers a single-unit capacity of 5.12 kWh and supports parallel connection of up to 9 units—meeting the backup power needs of an entire household. Paired with a smart electricity meter, it achieves zero feed-in, while its LAN interface ensures stable connectivity. With a compact, refined design, it delivers true plug-and-play functionality.

VENUS X: An all-in-one 6 kW AC-coupled energy storage system with a base capacity of 10 kWh, expandable up to 60 kWh. Featuring lightweight AC-coupling wiring, it supports 6 kW high-power bidirectional grid connection and 6 kW PV input, meeting the high-capacity electricity demands of households. With AI-driven intelligent management, it optimizes electricity costs, enables zero feed-in when paired with smart meters, and supports third-party EMS system integration with multi-mode communication.

MARS I PLUS: A 7-in-1 three-phase residential energy storage system featuring 1000V V-Boost technology and a 12 kW hybrid inverter. It supports 24 kW PV input with 4 MPPT, 12 kW AC output, 25 kW DC EV charging, and 12 kW V2X bidirectional power supply. Its stackable design enables flexible capacity expansion from 5.12 kWh to 30.72 kWh, delivering a comprehensive and future-ready energy solution for households.

[Event Highlights]

Against the backdrop of the Eiffel Tower, attending guests and the MARSTEK team engaged in in-depth discussions centered on the core values of the company’s products. 

From flexible balcony energy storage to efficient whole-home energy management, MARSTEK is breaking barriers in residential energy storage with its philosophy of “Plug in. WireLite.” —bringing convenient, accessible energy solutions to households. Looking ahead, MARSTEK will continue to focus on its vision of “Energy Everywhere, Power Anytime,” advancing energy storage technologies, delivering better home energy solutions worldwide, and contributing to the global “dual carbon” goals to build a clean, low-carbon, safe, and efficient energy system.