---
title: I have a weak grid and I want to have a backup genset​
description: "The [next inverter/charger series](https://studer-innotec.com/products) can be configured with two AC sources (grid + genset). The **AC flex** input port can be used for the connection of a genset as backup. The [xtender inverter/charger](https://studer-innotec.com/products/#xtender) series can also manage two sources with…"
url: "https://studer-innotec.com/support/faq/next-inverter-chargers-series/dimensioning/i-have-a-weak-grid-and-i-want-to-have-a-backup-genset/"
updated: "2026-06-25"
category: Dimensioning
tags:
  - energy management
  - genset
  - grid
---

# I have a weak grid and I want to have a backup genset​

The [next inverter/charger series](https://studer-innotec.com/products) can be configured with two AC sources (grid + genset). The **AC flex** input port can be used for the connection of a genset as backup. The [xtender inverter/charger](https://studer-innotec.com/products/#xtender) series can also manage two sources with an external ATS.​