MARSTEK Venus E Gen 3.0 is a modern home energy storage system that allows you to store surplus energy (e.g. from a photovoltaic installation) and use it when it is most profitable or needed. The device is compatible with existing PV systems – it does not require inverter replacement. It works perfectly both for daily electricity bill reduction and as a backup power source during outages.

If the energy storage is to be used exclusively for self-consumption, a dedicated meter must be installed to precisely manage energy flow.

With its IP65 protection rating, the device is resistant to dust and water, allowing safe installation both indoors and outdoors.

This is a solution for people who want to increase their home’s energy independence, optimize energy use, and prepare for dynamic tariffs or rising electricity prices.

Key product features:

• Unit capacity: 5.12 kWh
• Output power: up to 2500 W
• IP65 protection class
• Expandable up to 3 units (total 15.36 kWh and 7.5 kW)
• Backup power function
• Compatible with existing PV installations
• Operating modes: AI, automatic, manual
• LiFePO₄ battery technology (>6000 cycles)
• IP65 protection – indoor and outdoor operation
• Very quiet operation (<30 dB)
• 10-year manufacturer’s warranty
• App control, integration with smart meter

Energy storage is a modern way to increase energy independence and reduce electricity bills. Combined with a photovoltaic installation, it allows you to store surplus solar energy and use it when production is low – for example, in the evening or at night.

The key benefit is self-consumption – maximizing the use of self-produced energy for your own needs. This reduces the amount of electricity fed into the grid and avoids losses related to prosumer settlements.

Modern solutions such as the MARSTEK Venus E Gen 3.0 allow even more efficient energy management – from automatic and AI modes to backup power in case of outages.

This is the perfect solution in times of rising energy prices and dynamic tariffs. The MARSTEK energy storage system not only increases self-consumption but also ensures the energy security of your home or business.

Integration with VPP ENIGA (ENIGA Ready)

As an ENIGA Ready device, Venus E can be part of the VPP ENIGA virtual power plant – an intelligent energy management system on a national scale. This means the possibility of:

• actively participating in the energy market,
• earning from energy flexibility (e.g. system services),
• and improving PV and storage system efficiency.

Smarter energy management with AI and dynamic tariffs

The AI mode in Venus E Gen 3.0 automatically schedules charging based on current electricity prices in your region, using platforms like Nord Pool, Tibber, or Octopus Energy. The system learns your energy consumption patterns, analyzes battery levels and weather forecasts, and continuously adjusts when and how much to charge — helping to reduce costs and maximize energy savings without your intervention.

Zero feed-in to the grid with a smart meter

Thanks to real-time integration with a smart meter and adaptive control, Venus E Gen 3.0 ensures that solar energy surpluses are not sent to the grid. This solution is ideal in regions with export restrictions or low feed-in tariffs.

Reliable operation even at -20°C | IP65 protection

Venus E Gen 3.0 ensures stable performance even in freezing temperatures down to -20°C, and its IP65-rated housing protects against rain, dust, and harsh environmental conditions.

Open API for seamless EMS platform integration

Venus E Gen 3.0 supports Open API integration with leading EMS platforms such as Home Assistant or IoBroker, providing access to device data and control capabilities. This allows for flexible automation and customization within your smart energy ecosystem.

Ultra-quiet operation — below 30 dB

It operates so quietly that it blends into its surroundings, ensuring comfort without noise disturbance.