---
title: "Hundreds of thousands left without power: massive emergency outages in Sumy and Chernihiv regions"
description: "On August 20, massive emergency power outages occurred in the Sumy and Chernihiv regions. In the Chernihiv region, about 200,000 subscribers were left without light, while in Sumy, the disconnection of the water utility caused water supply disruptions."
date: 2026-08-20T12:40:02.000Z
lang: en
url: https://xab.info/en/posts/emergency-power-outages-in-sumy-and-chernihiv-regions
tags: [power-outage, sumy, chernihiv, ukraine, energy, water-supply, ukrenenergo]
publisher: "XAB.info"
---

# Hundreds of thousands left without power: massive emergency outages in Sumy and Chernihiv regions

![Portable generator on a city street serving as backup power during large-scale emergency power outages in Sumy and Chernihiv regions](https://xab.info/media/2026/08/21/avaryinye-otklyucheniya-sveta-v-sumskoy-i-chernihivskoy-oblastyah/avaryinye-otklyucheniya-sveta-v-sumskoy-i-chernihivskoy-oblastyah-1.webp)

## 🎯 Key Points

- On August 20, massive emergency power outages occurred in the Sumy and Chernihiv regions.
- In the Chernihiv region, about 200,000 subscribers were left without light in four districts; the cause is cited as malfunctions in the networks of NEK “Ukrenergo”.
- In Sumy, from 14:07, facilities of JSC “Horvodokanal” were disconnected due to power failure, causing temporary water supply disruptions.
- Emergency crews in both regions are carrying out work to restore power supply; consumers have been provided with call center and dispatch center phone numbers.

On August 20, massive emergency power outages were recorded in two regions of Ukraine — Sumy and Chernihiv oblasts. According to data cited by RBC-Ukraine from official publications of “Chernihivoblenergo”, “Sumyoblenergo”, and the Sumy City Council’s JSC “Horvodokanal”, the consequences of the accident affected both household consumers and municipal infrastructure facilities. In the Chernihiv region, about 200,000 subscribers were left without electricity, while in Sumy, the power outage at the water utility caused temporary water supply disruptions. Emergency crews in both regions are already working to restore normal power supply.

### Scale of outages in the Chernihiv region

In the Chernihiv region, power supply ceased in four districts at once — Koriukivka, Novhorod-Siverskyi, Nizhyn, and Chernihiv. According to energy experts, about 200,000 subscribers were left without electricity as a result of the accident. This is one of the largest incidents in terms of coverage in the region in recent times: the outage affected a significant part of residential buildings and socially significant facilities. Representatives of “Chernihivoblenergo” confirmed that emergency crews have been sent to the sites of the malfunctions and are carrying out work to restore electricity distribution.

### Sumy: without light and water

In the Sumy region, a large-scale emergency power outage was also recorded, and energy experts from “Sumyoblenergo” are working to restore power supply. The situation in the city was made particularly acute by water supply problems: due to power outages on August 20 at 14:07, the facilities of JSC “Horvodokanal” were disconnected. The enterprise asked residents to understand the temporary inconveniences and promised to return water supply to normal mode after the situation stabilizes. The current status of the water utility is reported separately.

### Causes and work of emergency crews

According to energy experts, the cause of the outages in the Chernihiv region was emergency malfunctions in the networks of NEK “Ukrenergo”. For the Sumy region, the cause is described more generally in the provided materials — as a large-scale accident in the networks, without detailing the specific section. In both regions, emergency crews have already begun restoration work, and normalization of the power supply regime is expected as damages are eliminated. Consumers are advised to monitor the official channels of operators to receive up-to-date data on restoration deadlines.

### Contradictory data

There is a difference in the level of detail regarding the causes of the incident in the provided materials. For the Chernihiv region, a specific cause was officially named — emergency malfunctions in the networks of NEK “Ukrenergo”, whereas for the Sumy region, the same sources only state a “large-scale emergency outage” without disclosing the technical nature of the damage. Additionally, it is mentioned in the context that the Government of Ukraine has canceled power restriction schedules for industrial and commercial consumers that provide at least 80% of their energy consumption through imports or own generation. Formally, this decision does not cancel emergency outages, however, for some readers, it may create confusion between scheduled schedules and unscheduled accidents, so both versions are presented openly.

### How to get information and contact dispatch centers

Residents of the Sumy region can find out about the reasons for the outage at a specific address through the E-Svitlo personal cabinet, in the “Outages” section on the website of JSC “Sumyoblenergo”, as well as by calling the call center: 0 800 300 247 and 0542 659 659. Regarding water supply in Sumy, the dispatch center of JSC “Horvodokanal” is available at: 050 407-81-10 and 067 548-21-12. Energy experts in both regions urge consumers to rely on official publications and not to spread unconfirmed information about the terms of power supply restoration.

## 🔍 Fact-Check Verification

- [Hundreds of thousands of subscribers left without light: emergency outages occurred in two regions](https://www.rbc.ua/ukr/news/svitla-sotni-tisyach-abonentiv-dvoh-oblastyah-1787229476.html) - Основной источник: датировка 20 августа, масштаб отключений в Сумской и Черниговской областях, ~200 тыс. абонентов на Черниговщине, обесточивание горводоканала Сум с 14:07, телефоны колл-центров.
- [Emergency outages occurred in two regions](https://korrespondent.net/ukraine/4904701-v-dvukh-oblastiakh-proyzoshly-avaryinye-otkluichenyia) - Подтверждает факт аварийных отключений в двух областях и согласуется с версией РБК-Украина.
- [Outage schedules are returning: when there will be no power on April 8](https://www.unian.net/economics/energetics/grafiki-otklyucheniya-sveta-8-aprelya-kogda-ne-budet-elektroenergii-segodnya-13341954.html) - Используется лишь как контекст по теме графиков/ограничений электроэнергии; не относится непосредственно к событию 20 августа.
- [Power will be cut off in Ukraine on Friday: who will be left without electricity](https://www.unian.net/economics/energetics/grafik-otklyucheniya-sveta-10-aprelya-kogda-i-gde-ne-budet-elektrichestva-13344042.html) - Используется лишь как контекст по теме графиков/ограничений электроэнергии; не относится непосредственно к событию 20 августа.

## ❓ FAQ

### Q: In which districts of the Chernihiv region did the electricity go out?
**A:** According to energy experts, power supply ceased in the Koriukivka, Novhorod-Siverskyi, Nizhyn, and Chernihiv districts; about 200,000 subscribers were left without light.

### Q: What happened to the water supply in Sumy?
**A:** Due to the emergency power outage on August 20 at 14:07, the facilities of JSC “Horvodokanal” were disconnected, which caused temporary water disruptions. After stabilization, the situation should return to normal mode.

### Q: What is the officially stated cause of the outages?
**A:** For the Chernihiv region, the cause is cited as emergency malfunctions in the networks of NEK “Ukrenergo”. For the Sumy region, the materials only state a large-scale accident without detailing the specific cause.

### Q: Where to turn for information about the outage?
**A:** In the Sumy region — through the E-Svitlo personal cabinet, the “Outages” section on the website of JSC “Sumyoblenergo”, and by calling 0 800 300 247 and 0542 659 659. For water in Sumy — the dispatch center of JSC “Horvodokanal”: 050 407-81-10 and 067 548-21-12.