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ESAC home storage for maximum savings
The Marstek Venus-E GEN 3.0 is a compact, AC-coupled home storage system with a 5,12 kWh LiFePO₄ battery that integrates seamlessly into existing PV systems. Featuring plug-and-play installation, intelligent AI-driven energy management, flexible expandability up to 7,5 kW/15,36 kWh, reliable backup power, and a robust IP65 enclosure, it offers high efficiency, maximum savings, and future-proof flexibility for modern households.
Elegant, space-saving design – Venus-E GEN 3.0
The Venus-E GEN 3.0 boasts a completely redesigned chassis, making it Marstek's most compact storage solution to date. With clean lines, smooth edges, and a modern look, it blends seamlessly into any environment—from the utility room to the living room.
Thanks to 38,5% less volume compared to its predecessor, the Venus-E offers more performance in less space and combines aesthetic design with maximum functionality for demanding households.
Marstek Venus-E GEN 3.0
Plug & Play with existing PV system
Simply connect – ready for use without inverter replacement or modifications
Compact design with 38,5% less volume
38,5% less volume for unobtrusive integration
Smart & compatible
Control via app, smart meter & open interfaces
Quick start thanks to plug & play
The Venus Gen 3.0 is ready to use in just 5 seconds – simply connect it via AC cable, without any tools, configuration or waiting time.
Reliable communication with LAN connection
In addition to Wi-Fi and Bluetooth, the Venus Gen 3.0 now also offers a LAN port for stable, interference-free communication – ideal for thick walls or multiple radio signals.
Marstek Venus E Gen 3.0 Questions & Answers
Q&A on the Marstek Venus E Gen 3.0
What is the Marstek Venus-E GEN 3.0 and what is it used for?
The Marstek Venus-E GEN 3.0 is an AC-coupled home storage system with a 5,12 kWh LiFePO₄ battery. It optimizes the self-consumption of your existing photovoltaic system – without replacing the inverter or making any changes to the solar system.
How easy is it to install the Venus-E GEN 3.0?
Thanks to plug-and-play technology, the system is ready to use in just a few minutes. Installation is tool-free and requires only one cable – plug in, start, and you're done.
What savings does the Marstek Venus-E GEN 3.0 offer?
The combination of self-consumption optimization and dynamic electricity tariffs can result in annual savings of up to €1.257 – while simultaneously relieving the strain on the electricity grid.
How powerful is the Venus-E GEN 3.0 in daily use?
The unit offers 2,5 kW AC input and output power and can be expanded to 2,5 kW feed-in. If required, up to three units can be cascaded – for up to 3 kW / 7,5 kWh.
Can the Venus-E GEN 3.0 provide power in an emergency?
Yes. The system provides 2,5 kW of emergency power via a dedicated backup output—reliable in the event of power outages or grid problems.
Which operating modes are available?
The Venus-E GEN 3.0 can be conveniently controlled via the MARSTEK app. It offers an AI-based automatic mode, self-consumption mode, and manual mode – for maximum control.
Is the Venus-E GEN 3.0 compatible with smart meters?
Yes, it supports leading smart meters, enabling precise consumption measurement, zero feed-in, and adaptive energy distribution—ideal for modern energy management systems.
How durable and quiet is the system?
With an IP65 protection rating, whisper-quiet operation below 30 dB, and over 6.000 charging cycles at 80% remaining capacity, the Venus-E GEN 3.0 is designed for long-term, quiet use.
What connection and integration options does the Venus-E GEN 3.0 offer?
The unit features Wi-Fi, LAN, RS485, and an open API/Modbus – perfect for integration into smart home systems such as Home Assistant or ioBroker.
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