PV Retrofit

Add Battery to Existing Solar System Without Replacing Inverter

Many European households already have rooftop solar systems, but a large part of the energy is still exported to the grid instead of being used at home.

A plug-in battery allows you to upgrade your existing PV system with storage — without replacing the inverter.

The Challenge

Excess solar energy is wasted during the day
Feed-in tariffs are decreasing
Electricity prices are higher in the evening
Traditional battery solutions require inverter replacement

The Solution

An AC-coupled plug-in battery can be added directly to your system:

No changes to the existing PV installation
Works with micro and string inverters
Simple and fast installation
Suitable for residential retrofit

How It Works

The system monitors household consumption through a smart meter.

When solar production exceeds demand, energy is stored in the battery.
When needed, stored energy is used to supply the home.

Typical Scenario

A household with rooftop solar adds a plug-in battery to store excess daytime energy and use it in the evening, reducing grid dependency.

Key Benefits

No inverter replacement
Lower upgrade cost
Higher self-consumption
Faster return

Recommended Setup

Plug-in Battery + Smart Meter
→ Standard retrofit solution

Plug-in Battery + P1 Integration
→ For Netherlands and similar markets

FAQ

Can I add a battery to an existing system?

Yes, it is designed for retrofit.

Do I need to replace the inverter?

No.

Get Started

Looking to upgrade your solar system with storage?
👉 Get a Quote:https://www.solar-xds.com/contact-us/