Marstek Venus E 3.0 vs. 2.0 – A comparison of the solar storage generations

1. Introduction

The demands on modern energy storage solutions are increasing – both in the private and commercial sectors. With the new Marstek Venus E 3.0 a powerful successor to the proven Marstek Venus E 2.0 launched. The new generation promises not only more efficient energy use, but also improved connectivity, a more compact design, and an overall more user-friendly solution for off-grid power supply. In the following article, we present the most important differences between the two models ( Marstek Venus E 3.0 vs 2.0 ) and evaluate whether switching to the new system is worthwhile.

Marstek Venus-E Gen 3.0

5,12kWh AC Coupled All-In-One Storage System

€ 2.199 € 1.499

with the code
VENUSSEP
secure yourself € 250 Discount!

• ⭐ €1310 annual savings with AI
• ⭐ 100% PV system compatibility
• ⭐ Up to 2500W AC input and output power
• ⭐ Expandable to 15,36 kWh with smart meter
  

Discover now →

2. Design and housing – more compact and efficient

The first noticeable difference is in the external appearance. Marstek Venus E 3.0 features a high-quality die-cast aluminum housing, which not only looks more modern, but also contributes to better heat dissipation. Compared to the Venus E 2.0, ( Marstek Venus E 2.0 vs 3.0 ) which was still equipped with a classic sheet steel case, the new model is around 38,5% more compact and about 7,4% lighter, which makes assembly and installation much easier – especially in confined installation environments such as technical rooms or garages.

3. Technical developments – more performance with less effort

In addition to the revised housing, the Venus E 3.0 vs 2.0 The internal structure has also been optimized. By using modern printed circuit board technology, the internal cabling has been reduced by about 50%. This not only simplifies maintenance but also increases system stability. Efficiency has been increased by 5% compared to its predecessor, meaning more of the solar energy generated can actually be stored and used.

4. Comparison at a glance – Venus E 3.0 vs. 2.0

The following table provides a compact overview of the most important differences between the Marstek Venus E 2.0 vs 3.0 and his predecessor:

5. Networking and integration – ready for smart energy

A particularly forward-looking feature of the Venus E 3.0 is the advanced connectivityIn addition to two RJ45 ports for easy daisy-chaining, an RS485 interface is also integrated for connection to modern energy management systems. Of particular note is the new LAN/Ethernet port, which allows stable communication without dependence on WLAN – a plus point for all those who value uninterrupted monitoring.

6. Flexible installation and scalability

Both models rely on a user-friendly Plug & Play system via a standard 230V household socket. This makes installation quick and easy – without any specialist personnel. This solution offers maximum flexibility, especially in urban areas or for retrofitted balcony power plants. The modular expansion remains the same even when Venus E 3.0 receive: Up to three battery modules per phase can be combined with each other, resulting in a maximum storage capacity of up to 138kWh for three-phase use.

7. Conclusion –  Venus E 3.0 vs. 2.0, a clear development

Marstek Venus-E Gen 3.0

5,12kWh AC Coupled All-In-One Storage System

€ 2.199 € 1.499

with the code
VENUSSEP
secure yourself € 250 Discount!

• ⭐ €1310 annual savings with AI
• ⭐ 100% PV system compatibility
• ⭐ Up to 2500W AC input and output power
• ⭐ Expandable to 15,36 kWh with smart meter
  

Discover now →

The Marstek Venus E 3.0 represents a consistent further development of the Venus E 2.0. With its improved efficiency, optimized housing design, expanded connection options, and continued ease of commissioning, it offers real added value for anyone relying on sustainable and flexible energy storage. Combined with its future-proof design, the Venus E 3.0 particularly interesting for users who want to make their energy supply efficient and intelligent in the long term. Venus E 2.0 vs 3.0, 3.0 emerged as the winner.