---
title: "Energy workers restore external power supply to Zaporizhzhia NPP after weeks of running on diesel generators"
description: "Ukrainian energy workers have restored the external power supply to the temporarily occupied Zaporizhzhia NPP, which had been disconnected from the Unified Energy System since August 20. The plant is again connected to the grid, with its consumption at 11 MW."
date: 2026-09-07T23:58:00.000Z
lang: en
url: https://xab.info/en/posts/energy-workers-restore-external-power-supply-to-zaporizhzhia-npp
tags: [zaporizhzhia-npp, nuclear-safety, energoatom, ukraine, energy-supply, iaea]
publisher: "XAB.info"
---

# Energy workers restore external power supply to Zaporizhzhia NPP after weeks of running on diesel generators

![Entry arch of the Zaporizhzhia Nuclear Power Plant with military vehicles and personnel amid the restoration of external power supply](https://xab.info/media/2026/09/08/energetiki-vosstanovili-vneshnee-elektrosnabzhenie-zaporojskoj-aes/energetiki-vosstanovili-vneshnee-elektrosnabzhenie-zaporojskoj-aes-1.webp)

## 🎯 Key Points

- Ukrainian energy workers restored the external power supply line to the temporarily occupied Zaporizhzhia NPP and reconnected the plant to the Unified Energy System of Ukraine.
- Since August 20, the ZNPP had been operating without external power, with critical systems supplied by diesel generators; the plant's current consumption is 11 MW.
- Repair of the damaged line was made possible by an agreed local ceasefire.
- Energoatom states that full nuclear and radiation safety is possible only after deoccupation and handover of the plant to the legitimate operator.
- The IAEA and Ukrainian media record repeated external power outages (a third time in a week, twice in a day), underscoring the instability of the plant's power supply.

Ukrainian energy workers have resumed operation of the line supplying external power to the temporarily occupied Zaporizhzhia nuclear power plant. According to Energoatom, the plant was successfully reconnected to the Unified Energy System of Ukraine after a period during which its critical systems had been running solely on diesel generators. On the evening of the previous day, the ZNPP's own needs were powered from the restored line, and the plant's current consumption, according to the company, stands at 11 MW.

### Repair conditions: local ceasefire

Energoatom emphasized that restoring the external power supply was made possible by the joint work of Ukrainian energy workers and an agreed local ceasefire, which created the necessary conditions for carrying out repair work on the damaged line. Ukrainian specialists, however, carried out their tasks under serious threat posed by the unpredictable actions of Russian occupiers, with constant risks to personnel safety.

### Risks to nuclear and radiation safety

According to Energoatom, the Zaporizhzhia NPP had been without external power supply since August 20, and throughout this period the plant's critical systems were powered by diesel generators. The company noted that this mode created additional risks to the nuclear and radiation safety of Europe's largest nuclear power plant. It had previously been indicated that prolonged use of backup systems increases the risk of common-cause equipment failure — a scenario considered among the most dangerous threats to nuclear safety.

### Contradictory data

The timeline of the outages is presented differently across sources. Energoatom's statement describes the restoration as the end of a single period of operation without external power that began on August 20. At the same time, according to IAEA data, the Zaporizhzhia NPP lost external power for the third time in a week, while a number of Ukrainian media outlets recorded two external power outages within a single day. Thus, one side emphasizes the successful restoration after a prolonged outage, whereas international monitoring and Ukrainian media highlight the chronic instability and repeated nature of the failures, indicating the extremely vulnerable state of the plant's power supply.

### Energoatom's position: safety only after deoccupation

Energoatom states that full nuclear and radiation safety at the Zaporizhzhia NPP can be ensured only after its deoccupation, return under Ukrainian control, and handover to the sole legitimate operator — Energoatom. According to the Ukrainian side, after the plant's seizure, Russian military forces use its territory for military purposes: weapons and equipment are deployed on the site, and strike drones are launched from it, which, according to Kyiv, creates additional risks to nuclear safety.

## 🔍 Fact-Check Verification

- [Energy workers resume external power supply to Zaporizhzhia NPP, - Energoatom](https://www.rbc.ua/ukr/news/energetiki-vidnovili-zovnishne-zhivlennya-1788824902.html) - Подтверждает возобновление внешнего питания ЗАЭС, подключение к Объединённой энергосистеме, потребление 11 МВт и роль локального прекращения огня для ремонта линии.
- [Zaporizhzhia NPP loses external power supply](https://www.rbc.ru/rbcfreenews/6a869c0d9a79474eb44a76de) - Фиксирует факт потери внешнего энергоснабжения станцией, что согласуется с периодом работы на дизель-генераторах до восстановления.
- [IAEA: Zaporizhzhia NPP loses external power for the third time in a week](https://www.kp.ru/online/news/7112827/) - Свидетельствует о многократности отключений (третий раз за неделю), что вносит оговорку в нарратив единого продолжительного отключения.
- [ZNPP loses external power twice in a day](https://korrespondent.net/ukraine/4901220-zaes-dvazhdy-za-den-teriala-vneshnee-pytanye) - Указывает на два отключения внешнего питания за один день, подчёркивая хроническую нестабильность энергоснабжения станции.

## ❓ FAQ

### Q: What happened to the external power supply of the Zaporizhzhia NPP?
**A:** Ukrainian energy workers restored the external power supply line and reconnected the temporarily occupied ZNPP to the Unified Energy System of Ukraine. Before that, the plant had been operating without external power since August 20, with critical systems supplied by diesel generators. The plant's current consumption is 11 MW.

### Q: Why was the line repair possible?
**A:** According to Energoatom, the repair of the damaged line was carried out thanks to an agreed local ceasefire, which created the necessary conditions for the work of Ukrainian energy workers, who operated under constant security risks.

### Q: How stable is the plant's power supply?
**A:** The power supply remains unstable: the IAEA reported that the ZNPP lost external power for the third time in a week, while Ukrainian media recorded two outages in a single day. Energoatom emphasizes that full nuclear and radiation safety is possible only after deoccupation and handover of the plant to the legitimate operator.