Who gains from saving nature
Ledger 1 : 33 — For each dollar financing nature-based solutions in 2023, about $33 financed activities harmful to nature. (UNEP)
Cases / War and military activity · Ukraine · 2022–2026

Chornobyl Exclusion Zone: Russian occupation of 2022 and fires, 2022–2026

Nature's voice · report
About 70 km² of my forest burned in March 2022, according to a satellite study published in 2023.
Did nature suffer? Yes. Harm is on record. Disputed
Recorded
  • Greenpeace measured 7.7 µSv/h at a junction next to my Red Forest and soil caesium-137 from 45,000 Bq/kg to below 500 Bq/kg in areas used by troops in July 2022. Greenpeace International
  • My red deer and red foxes reduced their night-time activity during the 2022 occupation, and my brown hares and red deer became more active at night in response to forest fires, according to camera-trap data published in Science in 2026. University of Freiburg (on Kudrenko et al., Science 392:1282–1286)
  • More than 2,600 hectares of my forest were covered by fire in September 2024, according to Ukraine's Ministry of Environmental Protection. TASS
  • Caesium-137 in the air near an active fire in my Opachychi area measured 680 µBq/m³ on 8 May 2026, according to Ukraine's nuclear regulator. Ukrinform
What the record lacks: 6 none on record · 2 not disclosed · 2 insufficient · 1 not measured · 9 disputed See the gaps
Accounts of the harm differ
Were radiation levels in the zone during the 2022 occupation significant?
  • Government and regulators Russia's Ministry of Defence: “Radiation levels are normal in the NPP area.” (25 February 2022) Interfax (Russia)
  • Government and regulators Ukraine's Prosecutor General's Office: Indicators in the zone had increased 4.6 to 15.7 times compared with the annual average, per the Automated Radiation Control System (4 March 2022). Interfax-Ukraine
  • International bodies IAEA (Rafael Grossi, via AFP and Interfax; and via BASE): “The radiation level, I would say, is normal”, with levels having gone up at times because of heavy equipment (26 April 2022); the rise from vehicle dust was assessed as low (BASE entry of 2 May 2022). Interfax (Russia)
  • Communities and civil society Greenpeace: Its readings were at least three times the IAEA's April 2022 estimates; 7.7 µSv/h at a junction next to the Red Forest. Greenpeace International
How much of the zone burned in 2022?
  • Researchers Hu et al., Scientific Reports (2023): About 70 km² burned in the zone in March 2022; a visual estimate by Protsak et al. of about 74 km². Scientific Reports 13:5236 (Hu et al.)
  • Government and regulators Ukraine's environment minister (Ruslan Strilets): “Almost 12,000 hectares” of the Chornobyl Reserve destroyed by fire (19 May 2022). Ukrinform
What started the 2026 fires?
  • Government and regulators Ukraine's State Emergency Service (Kyiv region), as reported by Ukrinform: The fire of 14 May 2026 was caused by the downing of Russian drones. Ukrinform
  • Government and regulators State Agency of Ukraine on Exclusion Zone Management, as reported by Meduza: The fires of 25 June 2026 were started by crashed Russian drones. Meduza
  • Government and regulators Chornobyl Reserve: The 7 May fire started “as a result of a drone crash”; the post does not name the drone's origin. Kyiv Post
  • Government and regulators Russia: No statement on the fires on record.

Russian forces held the Chornobyl Exclusion Zone from 24 February 2022 until the end of March 2022. Ukrainian agencies reported looted laboratories and lost machinery, and a peer-reviewed satellite study found about 70 km² burned in March 2022; further fires followed in 2024 and 2026.

≈ 70 km² estimateBurned area in the zone, March 2022 (satellite study)
Estimate from satellite imagery (Hu et al., Scientific Reports, 2023). Ukraine's environment minister gave “almost 12,000 hectares” of the Chornobyl Reserve destroyed by fire on 19 May 2022.

Status As of October 2026: fires in the zone in May and June 2026 attributed by Ukrainian agencies to crashed Russian drones; a suspicion notice under Article 438 was issued on 7 February 2025; no court ruling on record.

What?
Russian forces held the Chornobyl Exclusion Zone from 24 February 2022 to the end of March 2022. Ukrainian agencies reported looted laboratories, lost machinery and disputed radiation increases; about 70 km² burned in March 2022 according to a satellite study. Further fires followed in 2024 and 2026. Scientific Reports 13:5236 (Hu et al.)
Where?
Chornobyl Exclusion Zone, Kyiv oblast, Ukraine, including the Chornobyl NPP site, the Red Forest, the Chornobyl Reserve and the Opachychi area. BASE (Federal Office for the Safety of Nuclear Waste Management, Germany)
When?
Occupation from 24 February 2022 until about 31 March 2022; fires in March 2022, September 2024 and May–June 2026. BASE (Federal Office for the Safety of Nuclear Waste Management, Germany)
Who?
Gained
None on record
Lost
  • State Agency of Ukraine on Exclusion Zone Management — Central Analytical Laboratory (valued at EUR 6 million), more than 300 vehicles and, per the EBRD, more than 90 per cent of its specialised firefighting and forestry machinery EBRD
  • Chornobyl NPP and zone enterprises — Estimated looting losses of USD 135 million (company figure, April 2026) Chornobyl NPP (state enterprise)
Harmed
Why?
The Russian Airborne Forces took control of the area on 24 February 2022, according to Russia's Ministry of Defence. The satellite study's authors state that the majority of the burned area detected in northern Ukraine was burned in the course of the Russian invasion; Ukrainian agencies attribute the 2026 fires to crashed Russian drones. Scientific Reports 13:5236 (Hu et al.)
How?
Ukraine's agencies reported heavy military vehicles disturbing contaminated topsoil, trenches in the Red Forest, looting of laboratories and vehicles, and fires that could not be fully extinguished because of mines. The EBRD-managed ICCA funded replacement fire-safety equipment. Rubryka
6 of 6 questions answered from the record

What happened

The record, in order.

Russia's Ministry of Defence said on 25 February 2022 that units of the Russian Airborne Forces had taken full control of the area around the Chornobyl nuclear power plant on 24 February. The plant lost external power on 9 March; Ukraine's Ministry of Energy reported a reconnection on 13 March, the line was disconnected again on 14 March and reconnected on 15 March. According to the German regulator BASE's chronology, Russian troops withdrew from the zone on 31 March 2022, and on 1 April Ukraine said all Russian forces had left the zone and that Russia had confirmed this.

Radiation in the zone was reported differently by the parties. On 25 February 2022 Ukraine's nuclear agency (not named in the article) said gamma radiation had exceeded control levels and attributed it to heavy military vehicles disturbing topsoil; Russia's Ministry of Defence said radiation levels in the plant area were normal. On 4 March Ukraine's Prosecutor General's Office said that, according to the Automated Radiation Control System, indicators in the zone had risen 4.6 to 15.7 times compared with the annual average. The IAEA said on 7 April, according to BASE, that drone footage it cited indicated Russian troops had dug trenches in the contaminated area and that it could not confirm reports of high radiation doses among the troops; BASE recorded on 2 May that the IAEA assessed the rise in radiation from dust raised by military vehicles as low. On 26 April IAEA Director General Rafael Grossi said, as reported by AFP, that the radiation level was normal and that levels had gone up at times because of heavy equipment moved by Russian forces. In July 2022 Greenpeace, with a team led by Greenpeace Germany and the cooperation of Ukraine's zone agency, published readings of 0.18–2.5 µSv/h near the Russian camp at Stantsiya Yanov and 7.7 µSv/h at a junction next to the Red Forest.

Ukraine's State Agency on Exclusion Zone Management (SAEZM) reported on 23 March 2022 that the Central Analytical Laboratory in Chornobyl, valued at EUR 6 million, had been looted and destroyed, and on 10 April that 133 sources of ionizing radiation with a total activity of about 7 million becquerels had been stolen and destroyed. Environment minister Ruslan Strilets said on 19 May 2022 that nearly 100 units of equipment at the laboratory were destroyed, that preliminary damage to the zone was UAH 2.5 billion and that only “several posts” of the radiation monitoring system had been reactivated. On 3 June he gave losses of UAH 2 billion so far. In August 2023 SAEZM's deputy head Maksym Shevchuk put the occupation damage at EUR 100 million, said more than 300 vehicles had been lost, about six hectares of trenches were visible on satellite imagery, and a 10-part recovery plan would cost EUR 200 million. The EBRD said that more than 90 per cent of the zone administration's specialised firefighting and forestry machinery was destroyed or displaced; donors approved a grant of up to EUR 1.1 million to the EBRD-managed International Chernobyl Cooperation Account (ICCA) on 14 November 2022 for fire-safety equipment.

A peer-reviewed satellite study (Hu et al., Scientific Reports, 31 March 2023) found about 0.4 km² burned in the zone in February 2022 and about 70 km² in March 2022; it cited a visual estimate of about 74 km² by Protsak et al. and did not measure radiation. Ukraine's parliament reported seven fires covering over 2 km² on 22 March 2022. Later fires followed. Ukraine's Ministry of Environmental Protection said on 7 September 2024 that more than 2,600 hectares had been covered by fire and that the radiation background was normal. On 7–8 May 2026 a forest fire started in the Opachychi area “as a result of a drone crash”, according to the Chornobyl Reserve; Ukraine's State Emergency Service gave more than 1,100 ha and the IAEA, according to BASE, about 1,100 ha with no abnormal radiation. Ukraine's State Nuclear Regulatory Inspectorate reported caesium-137 in near-surface air of 680 µBq/m³ on 8 May 2026, 30–150 m from the active fire. A further fire from 14 May exceeded 412 ha by 20 May, and new fires on 25 June 2026 were attributed by the zone agency to crashed Russian drones.

A Science paper (Kudrenko et al., 2026), based on camera traps, found that red deer and red foxes reduced night-time activity during the 2022 occupation and that brown hares and red deer became more active at night in response to thermal anomalies, mainly conflict-related forest fires. On 4 March 2022 Ukraine's Prosecutor General's Office opened proceedings that cite Article 441 (ecocide) of the Criminal Code over the seizure of the Chornobyl and Zaporizhzhia plants. On 7 February 2025 it notified a suspicion under Article 438 (violation of the laws and customs of war) to a Russian major general over the looting and destruction of property of Chornobyl enterprises between 24 February and 31 March 2022, with damage stated as over UAH 1.038 billion; no conviction is on record.

  1. 2022Russian forces take control of the plant and zone (24 Feb); Ukraine's Prosecutor General opens proceedings (4 Mar); power lost (9 Mar); seven fires over 2 km² reported (22 Mar); laboratory looting reported (23 Mar); Russian troops withdraw (31 Mar); Greenpeace readings published (20 Jul); ICCA grant of up to EUR 1.1m approved for fire-safety equipment (14 Nov)
  2. 2023Satellite study of 2022 burned area published (31 Mar); zone agency puts occupation damage at EUR 100m (Aug)
  3. 2024Fire covers more than 2,600 ha (7 Sep, Ministry of Environmental Protection)
  4. 2025Suspicion notified to a Russian major general under Article 438 (7 Feb)
  5. 2026Fire from 7 May, about 1,100 ha; caesium-137 in air measured 8 May; new fire 14 May, over 412 ha by 20 May; fires of 25 June; Chornobyl NPP puts looting losses at USD 135m (13 Apr); university release on the Science wildlife study (19 Jun)

What was said

Claims, in the words of those who made them.

“units of the Russian Airborne Forces took full control of the area around the Chernobyl NPP”

Russia's Ministry of Defence (Igor Konashenkov), as reported by Interfax · 25 February 2022 · translated from Russian · Interfax (Russia)

“Radiation levels are normal in the NPP area.”

Russia's Ministry of Defence · 25 February 2022 · translated from Russian · Interfax (Russia)

“the indicators in the exclusion zone have increased from 4.6 to 15.7 times compared to the annual average.”

Ukraine's Prosecutor General's Office, citing the Automated Radiation Control System · 4 March 2022 · translated from Ukrainian · Interfax-Ukraine

“The enemy creates threats of an ecocatastrophe in Ukraine and Europe.”

Ukraine's Prosecutor General's Office · 4 March 2022 · translated from Ukrainian · Interfax-Ukraine

“The radiation level, I would say, is normal”

Rafael Grossi, IAEA Director General (via AFP, reported by Interfax) · 26 April 2022 · Interfax (Russia)

“The Russian occupiers looted and destroyed the modern Central Analytical Laboratory in Chornobyl”

State Agency of Ukraine on Exclusion Zone Management · 23 March 2022 · translated from Ukrainian · Ukrinform

“The occupiers stole and destroyed 133 sources with a total activity of about 7 million becquerels”

State Agency of Ukraine on Exclusion Zone Management · 10 April 2022 · translated from Ukrainian · LB.ua

“The Russian military occupation of the Chernobyl nuclear power plant site left a trail of devastation.”

Balthasar Lindauer, EBRD · 14 November 2022 · EBRD

“decided not to make an effort to fully investigate”

“Now, there is no access to 25-30% of the territory because mines are scattered there”

Maksym Shevchuk, deputy head of the State Agency of Ukraine on Exclusion Zone Management · August 2023 · translated from Ukrainian · Rubryka

“It was impossible to enter the forest to extinguish the center of this fire”

Denys Vishnevskyi, scientist at the Chornobyl Reserve · August 2023 · translated from Ukrainian · Rubryka

“We are sure that Rosatom must be held accountable as must Russia as a whole.”

“The radiation background in the area is normal.”

Ukraine's Ministry of Environmental Protection, as reported by TASS · 7 September 2024 · translated from Ukrainian · TASS

“The measured value exceeds the control levels established for these territories”

State Nuclear Regulatory Inspectorate of Ukraine, as reported by Ukrinform · 9 May 2026 · translated from Ukrainian · Ukrinform

“In some forest sectors, firefighting operations are temporarily suspended due to the threat of explosive objects.”

State Emergency Service of Ukraine, as reported by Kyiv Post · May 2026 · translated from Ukrainian · Kyiv Post

“This doesn't mean radiation is good for wildlife.”

Where accounts differ

Each party's account, side by side, with its source. The record does not settle these points; it shows them.

Were radiation levels in the zone during the 2022 occupation significant?
Government and regulators
Russia's Ministry of Defence

“Radiation levels are normal in the NPP area.” (25 February 2022)

Interfax (Russia)
Government and regulators
Ukraine's Prosecutor General's Office

Indicators in the zone had increased 4.6 to 15.7 times compared with the annual average, per the Automated Radiation Control System (4 March 2022).

Interfax-Ukraine
International bodies
IAEA (Rafael Grossi, via AFP and Interfax; and via BASE)

“The radiation level, I would say, is normal”, with levels having gone up at times because of heavy equipment (26 April 2022); the rise from vehicle dust was assessed as low (BASE entry of 2 May 2022).

Interfax (Russia)
Communities and civil society
Greenpeace

Its readings were at least three times the IAEA's April 2022 estimates; 7.7 µSv/h at a junction next to the Red Forest.

Greenpeace International
What was the total damage from the occupation?
Government and regulators
Ukraine's environment minister (Ruslan Strilets)

UAH 2.5 billion preliminary damage (19 May 2022); UAH 2 billion losses so far (3 June 2022).

Ukrinform
Government and regulators
State Agency of Ukraine on Exclusion Zone Management

Occupation damage of EUR 100 million; recovery plan of EUR 200 million (August 2023).

Rubryka
Company or project
Chornobyl NPP

USD 135 million estimated looting losses across zone enterprises (April 2026).

Chornobyl NPP (state enterprise)
Government and regulators
Ukraine's Prosecutor General's Office

Damage of over UAH 1.038 billion in the criminal case (7 February 2025).

ArmyInform (Ukraine Ministry of Defence news agency, relaying the Prosecutor General's Office)
How much of the zone burned in 2022?
Researchers
Hu et al., Scientific Reports (2023)

About 70 km² burned in the zone in March 2022; a visual estimate by Protsak et al. of about 74 km².

Scientific Reports 13:5236 (Hu et al.)
Government and regulators
Ukraine's environment minister (Ruslan Strilets)

“Almost 12,000 hectares” of the Chornobyl Reserve destroyed by fire (19 May 2022).

Ukrinform
What started the 2026 fires?
Government and regulators
Ukraine's State Emergency Service (Kyiv region), as reported by Ukrinform

The fire of 14 May 2026 was caused by the downing of Russian drones.

Ukrinform
Government and regulators
State Agency of Ukraine on Exclusion Zone Management, as reported by Meduza

The fires of 25 June 2026 were started by crashed Russian drones.

Meduza
Government and regulators
Chornobyl Reserve

The 7 May fire started “as a result of a drone crash”; the post does not name the drone's origin.

Kyiv Post
Government and regulators
Russia

No statement on the fires on record.

How it looked

What was shown, beside what was recorded.

Shown

  • Reports that Russian vehicles raised radiation levels in the zone, with figures of 4.6 to 15.7 times the annual average
    Ukraine's Prosecutor General's Office · Interfax-Ukraine
  • A statement that radiation levels in the plant area were normal
    Russia's Ministry of Defence · Interfax (Russia)
  • Reports of looted laboratories, 133 stolen radiation sources and more than 300 lost vehicles
    State Agency of Ukraine on Exclusion Zone Management · Rubryka
  • Radiation readings near areas used by Russian troops, described as at least three times the IAEA's April 2022 estimates
  • Attribution of the May and June 2026 fires to crashed Russian drones
    Ukrainian agencies (State Emergency Service, zone agency) · Ukrinform

Recorded

  • Satellite study: about 0.4 km² burned in the zone in February 2022 and about 70 km² in March 2022; the authors state that the majority of the burned area detected was burned in the course of the Russian invasion, and the study measured no radiation.
  • The EBRD recorded that the April 2020 fires, before the war, destroyed about 50,000 ha, roughly 20% of the zone.
  • The IAEA could not confirm reports of high radiation doses among Russian troops (7 April 2022, according to BASE).
  • The IAEA assessed the rise in radiation levels from dust raised by military vehicles as low, and the power loss of 9 March 2022 as having no safety-relevant effects (BASE entry of 2 May 2022).
  • Zone radiation monitoring: only “several posts” reactivated by 19 May 2022 (environment minister); IAEA safeguards remote data from Chornobyl were cut in March 2022 and fully restored on 11 May 2022 (BASE).
  • Greenpeace reported soil caesium-137 from 45,000 Bq/kg to below 500 Bq/kg in areas used by troops, and said the trench material qualified as low-level nuclear waste.
  • Pre-war census (Current Biology, 2015): no sign that radiation reduced mammal abundance; wolves about seven times more numerous than in nearby uncontaminated reserves; elk, roe deer and wild boar numbers rising in the decade after 1986.
  • Camera-trap study (Science, 2026; 11 species, 2022 data 19 January–6 May against 19 January–21 March 2021): roe deer detections declined as daily conflict intensity rose, while red deer detections increased.
  • Regulator, May 2026: caesium-137 in air 680 µBq/m³ (0.00068 Bq/m³) against a national limit of 0.8 Bq/m³; the redistribution “does not create additional risks that would require intervention measures”.
  • Reserve, May 2026: background in the fire area 0.19–0.35 µSv/h.
  • June 2026: the Ukrainian Hydrometeorological Institute said the fires worsened air quality in Kyiv and Kyiv-region districts on 27–28 June; Sentinel-5P showed plumes up to 170 km with elevated carbon monoxide and particulate matter.

Who gained

Money that reached nature, beside money that stayed elsewhere.

Reached nature or the ground

Not published
Preliminary damage to the exclusion zone (UAH, Ukraine's environment minister)2.5bn
Window: 19 May 2022
UAH 2.5 billion; the same minister gave UAH 2 billion on 3 June 2022. Ukrainian official estimate; no reconciled total.
Losses of Chornobyl NPP and the zone “so far” (UAH, Ukraine's environment minister)2bn
Window: 3 June 2022
UAH 2 billion; a “much higher” final figure expected.
Occupation damage (EUR, deputy head of the zone agency)100m
Window: August 2023
Estimate by the zone agency.
Looting losses across zone enterprises (USD, Chornobyl NPP)135m
Window: April 2026
Estimate by the state enterprise.
Damage stated in the Prosecutor General's criminal case (UAH)1bn
Window: February 2025
UAH 1.038 billion; prosecutors' figure at suspicion stage.

Gained elsewhere

Not totalled
Central Analytical Laboratory, value stated by the zone agency (EUR)6m
Window: March 2022
ICCA grant approved for fire-safety equipment (EUR)1.1m
Window: 14 November 2022
Cost of the zone agency's 10-part recovery plan (EUR)200m
Window: August 2023
Currency: Mixed (see each line) · Window: Mixed — see each line. Figures cover different periods and are not compared as a ratio. * Estimate built from cited figures.

Responses on record

  • russia-ministry-defence (25 February 2022): “Radiation levels are normal in the NPP area.” · Interfax (Russia)
  • iaea (April–May 2022): Could not confirm reports of high radiation doses among Russian troops (7 April 2022, according to BASE); assessed the rise in radiation from dust raised by vehicles as low (BASE entry of 2 May 2022). · BASE (Federal Office for the Safety of Nuclear Waste Management, Germany)
  • ebrd (14 November 2022): “The Russian military occupation of the Chernobyl nuclear power plant site left a trail of devastation.” · EBRD
  • greenpeace-international (20 July 2022): The IAEA “decided not to make an effort to fully investigate”. · Greenpeace International

In court and with insurers

Every proceeding and every insurer decision on record.

Lawsuits and rulings

  1. 2022–No defendant left
    Ukraine Prosecutor General's proceedings over the seizure of the Chornobyl and Zaporizhzhia plants
    Prosecutor General's Office of Ukraine (pre-trial investigation) · Criminal · Prosecutor General's Office of Ukraine → No defendant named

    On 4 March 2022 the Prosecutor General's Office said it had opened proceedings over the seizure of the Chornobyl and Zaporizhzhia plants, citing Part 2 of Article 28, Article 441 (ecocide) and Part 2 of Article 258 (terrorist act) of Ukraine's Criminal Code. The status is investigation; no court ruling is on record. Interfax-Ukraine

  2. 2025–OngoingUAH 1.04bn damage stated by prosecutors (over)
    Suspicion notice to a Russian major general over property of Chornobyl enterprises
    Prosecutor General's Office of Ukraine · Criminal · Prosecutor General's Office of Ukraine → A Russian major general, deputy chief of Russia's Radiation, Chemical and Biological Protection Troops (armament and research work)

    On 7 February 2025 the Prosecutor General's Office notified a suspicion under Part 2 of Article 28 and Part 1 of Article 438 (violation of the laws and customs of war) for participating in the looting and destruction of property of SSE Chornobyl NPP, the Chornobyl Radiation and Ecological Biosphere Reserve, SSE Pivnichna Pushcha, SSE Ecocentre and SSE Central Enterprise for Radioactive Waste Management between 24 February and 31 March 2022, with damage of over UAH 1.038 billion. The status is a notified suspicion; no conviction is on record. ArmyInform (Ukraine Ministry of Defence news agency, relaying the Prosecutor General's Office)

Insurers

No insurer decision on record.

What nature saw

Outcomes measured on the ground, and nature's note.

Nature's report opens this page. Below: further outcomes measured on the ground.

Burned, March 2022
≈ 70 km²
Satellite study of the zone; minister gave almost 12,000 ha for the Reserve
Specialised machinery destroyed or displaced
> 90%
Zone administration's firefighting and forestry machinery (EBRD)
Radiation near Red Forest junction
7.7 µSv/h
Greenpeace reading, July 2022
Caesium-137 in air near fire
680 µBq/m³
8 May 2026; national limit 0.8 Bq/m³

What we don't know

Undisclosed, unproven, untried: recorded as data.

Nature

  • Disputed Were radiation levels in the zone during the 2022 occupation significant?
  • Disputed How much of the zone burned in 2022?
  • Disputed What started the 2026 fires?

Accounts

  • Disputed What was the total damage from the occupation?
  • None on record Russia: No statement on the fires on record.

Record

  • Disputed Figures differ: Ukrainian officials gave UAH 2.5 billion (19 May 2022) and UAH 2 billion (3 June 2022) for losses at the zone; the zone agency's deputy head gave EUR 100 million (August 2023); Chornobyl NPP gave USD 135 million for looting losses across zone enterprises (April 2026); the Prosecutor General's case cites over UAH 1.038 billion. Scopes and dates differ, and no reconciled total is on record.
  • Disputed Figures differ: the 2022 satellite study gives about 70 km² burned in March 2022 (a visual estimate cited in it: about 74 km²); Ukraine's environment minister gave almost 12,000 hectares of the Chornobyl Reserve destroyed by fire (19 May 2022).
  • Disputed Figures differ: the occupation is dated as ending on 31 March 2022 (Ukraine's Prosecutor General's Office, BASE) or 1 April 2022 (Ukraine's statement that all forces had left); other sources give a later date.
  • Disputed Figures differ: the area of the May 2026 fire was given as more than 1,100 ha (State Emergency Service; IAEA via BASE), and other outlets gave 1,180 ha and 1,200 ha; the Chernihiv regional governor gave up to 40 km².
  • None on record None on record: a burned-area figure for the zone for 2023 or 2025.
  • None on record None on record: a cumulative burned-area figure for 2022–2026 from an official or satellite source.
  • None on record None on record: a cost figure for firefighting operations in the zone in 2024–2026.
  • None on record None on record: a court ruling in the proceedings Ukraine's Prosecutor General's Office opened on 4 March 2022 citing Article 441, or a conviction in the Article 438 case.
  • None on record None on record: a statement by Russia on the 2026 fires.
  • Not measured Not measured: radiation in the 2023 satellite burned-area study, which did not include radiation measurements.
  • Insufficient Insufficient: the IAEA said it could not confirm reports of high radiation doses among Russian troops (7 April 2022, according to BASE).
  • Insufficient Insufficient: the zone agency's deputy head said in 2023 that 25–30% of the zone was inaccessible because of mines.
  • Not disclosed Not disclosed: the cause of the September 2024 fire, which the ministry's statement did not give.
  • Not disclosed Not disclosed: whose drone started the fire of 7 May 2026; neither the Chornobyl Reserve's post nor Kyiv Post says.
  • Disputed Disputed: whether radiation levels in the zone during the occupation were significant. Russia's Ministry of Defence and the IAEA (via BASE and Interfax) described levels as normal or the rise as low; Ukraine's Prosecutor General's Office cited increases of 4.6 to 15.7 times; Greenpeace measured readings at least three times the IAEA's April 2022 estimates. The instruments, places and dates differ.

Did the harm stop?

Russian troops withdrew from the zone on 31 March 2022 (BASE chronology). Fires in the zone recurred in September 2024 and in May and June 2026.

Who paid?

Donors, through the EBRD-managed ICCA, approved up to EUR 1.1 million for fire-safety equipment on 14 November 2022. None on record: compensation paid by a party held responsible.

Sources

Voices on record: ✓ Company or project✓ Government and regulators— Courts✓ Press and investigations✓ Communities and civil society✓ Researchers✓ International bodies

Company or project

  1. ChNPP Director General: the IAEA should punish Rosatom…
    Chornobyl NPP (state enterprise) · 2026-04-13

Government and regulators

  1. On the current situation in Ukraine
    BASE (Federal Office for the Safety of Nuclear Waste Management, Germany) · 2022–2026 (running chronology)

Communities and civil society

Researchers

  1. Wildlife in Chornobyl is changing its behaviour during Russian invasion
    University of Freiburg (on Kudrenko et al., Science 392:1282–1286) · 2026-06-19
  2. Long-term census data reveal abundant wildlife populations at Chernobyl
    University of Portsmouth research portal (Current Biology 25(19)) · 2015-10-05
  3. International research team finds thriving wildlife populations in Chernobyl
    University of Georgia Savannah River Ecology Laboratory · 2015-10-05

Connected cases

Related matters, and cases linked to this one through the same organisations, with the role each played in both.

Science and environment

Groundwater
Water held underground in soil and rock, drawn through wells.
Hectare (ha)
A unit of area equal to 10,000 square metres, about 2.5 acres. 100 hectares make one square kilometre.

Bonds and banking

Arranger
The bank that structures and sells a bond or loan deal, usually for a fee.
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