Home / People / Maryna Ilchuk
Portrait of Image of Maryna Ilchuk

Maryna Ilchuk


CMS Cameron McKenna Nabarro Olswang
6th Floor, 38 Volodymyrska Street
01054 Kyiv
Languages Ukrainian, Russian, English

Maryna Ilchuk is based at the Kyiv office of CMS Cameron McKenna Nabarro Olswang.

Maryna Ilchuk advises domestic and foreign clients operating in the Energy, Oil & Gas sector on a broad range of legal and regulatory issues. She provides full service legal advice on the entire lifecycle of energy companies, with a particular focus on the commercial and technical aspects of the energy industry. 

In the electricity sector, Maryna is involved in cross-border projects (transit, export and import) and advises electricity traders. In the oil and gas sector, Maryna advised a foreign investor on the first ever full-scale Production Enhancement Contract (PEC) in Ukraine, and is actively involved in advising servicing companies on their contracts with largest state production company. She provides advice to gas traders regarding their day-to-day activity and contract relationships with Ukrainian counterparties. Maryna took part in the project on unbundling the state-owned energy company Naftogaz Ukraine, and analysed the possible models of separating and restructuring the fuel and energy market in general. 

Maryna has substantial experience in renewable energy projects, representing both investors, target companies and EPC-contractors, and she leads legal due diligences in acquisition projects. She also advises on various legal issues related to the production and sale of renewable energy. 

Maryna advises industry and the public sector on the implementation of energy efficiency projects. She has supported projects for structuring the relationships of public and private partners, in particular involving the cooperation of foreign investors with state enterprises and authorities. Maryna also has experience in energy disputes.

Maryna has been admitted to the Ukrainian Bar as an advocate since 2019.

Maryna is a recommended lawyer in Energy and Natural Resources by Chambers Europe 2016–2021. She is recommended by Who’s Who Legal 2020, by IFLR rated as a Rising star for Ukraine, ranked as the Best Lawyer in Energy & Natural Resources, Mining and Oil & Gas by Best Lawyers ranking, and is mentioned as a Notable Practitioner by Ukrainian Law Firms Rankings 2016–2020. Clients say: “She always knows about all the changes, and she understands how they influence business”.

Maryna is a Member of the Ukrainian Bar Association, Board Member of the Women’s Energy Club, and is a member of Association of International Petroleum Negotiators (AIPN).

more less

"She always knows about all the changes, she understands how they influence business"

client feedback

Relevant experience

  • Acciona Energía, the biggest global energy company operating exclusively in the renewable energy sector, on:
    • due diligence of a number of solar power projects (in pre-construction phase) for the purpose of further acquisition
    • legal support for the acquisitions and development of the projects
    • full assistance for the client in contract negotiations in relation to its activities in Ukraine
  • Polish oil and gas exploration and production company - on cross-border trading, import, export and storing of natural gas in Ukraine including:
    • on gas trading with Ukrainian counter-parties, storage of gas in Ukraine under customs warehouse regime, various aspects of new gas market legislation and standard contracts with the transmission (storage) system operator, day-to day support on their contracts with Ukrtransgaz and Ukrainian counterparties-traders, operating under customs warehouse regime
  • Schlumberger:
    • providing legal assistance in negotiations with Ukrainian oil and gas company of USD 100 million Coiled Tubing Services Contract, foreseeing in particular provision of high-technology services using CT units and engineering support on various regulatory aspects of the company’s oil & gas activities in Ukraine
  • Halliburton - providing legal advice and full support on regulatory issues related to oil and gas activities that Halliburton intends to undertake in Ukraine
  • Expert Petroleum on Ukrainian law issues of the production enhancement contracts and related legal matters, as well as on supporting the client in the negotiation of the production enhancement contracts as a part of the company’s activities in Ukraine
  • Vermilion on:
    • joint bid advice and submission of the bids for product sharing agreements bids within Ukraine's 2019 Production Sharing Agreement program to be a major new program designed to attract private international and domestic companies to invest in energy production
    • assistance in drafting and negotiations of the product sharing agreements for the production of hydrocarbons
  • EuroCape New Energy Limited – as a borrower and sponsor respectively in relation to equity and senior debt financing, for the construction of a wind farm in Ukraine. CMS acted on all aspects of the project development and financing including the negotiation of all transactional documents, as well as related advice on real estate, banking and finance, energy regulatory issues and due diligence aspects
  • Scatec Solar ASA, a Norway-based solar power producer, on:
    • on due diligence of a solar power project with the capacity of 50 MW in the Kherson region of Ukraine (in pre-construction phase) for the purpose of further acquisition
  • McKinsey: comprehensive study for optimisation and increasing efficiency of underground gas storage facilities in Ukraine
  • Danske Commodities on wholesale and retail gas trading, and gas import & export from/to Ukraine, in negotiations with Ukrainian authorities and energy companies in regard to possible cooperation in transit and/or export of electricity; as well as providing full legal support in contractual issues
  • Akuo Energy on EBRD financing of a 110MW wind farm project in South East Ukraine
more less


  • 2011 – Master degree in law, National university of Kyiv-Mohyla Academy, Kyiv
  • 2010 – Specialist, National university of Kyiv-Mohyla Academy, Kyiv
  • 2009 – Bachelor, National university of Kyiv-Mohyla Academy, Kyiv
more less


War dam­age in Ukraine: all you need to know to ob­tain com­pens­a­tion
Ac­cord­ing to a re­port on 2 May 2022 pre­pared by the Pres­id­ent’s Of­fice, the gov­ern­ment and the Ky­iv School of Eco­nom­ics In­sti­tute, Ukraine had already suffered losses of USD 600bn due to the war. In...
Ukrain­i­an en­ergy sys­tem joins uni­fied European elec­tri­city sys­tem ENTSO-E
On 16 March 2022, Ukraine joined the uni­fied con­tin­ent­al European elec­tri­city sys­tem ENTSO-E and com­pleted an emer­gency syn­chron­isa­tion of its power grids with the ENTSO-E in re­sponse to Rus­si­a's in­va­sion...
Ukraine sim­pli­fies li­cens­ing and per­mit­ting pro­ced­ures dur­ing mar­tial law
On 18 March 2022, the Cab­in­et of Min­is­ters of Ukraine ad­op­ted Res­ol­u­tion No. 314 “On Cer­tain Mat­ters for En­sur­ing Busi­ness Activ­ity Dur­ing Mar­tial Law”. For the dur­a­tion of mar­tial law, the Res­ol­u­tion...
Busi­ness dur­ing the Mar­tial law in Ukraine
In an ef­fort to help busi­nesses nav­ig­ate these ex­treme and chal­len­ging times, CMS has pre­pared an over­view of the key is­sues the busi­ness sec­tor is cur­rently fa­cing. This over­view cov­ers the leg­al im­plic­a­tions...
Ukraine ad­opts new en­ergy ef­fi­ciency le­gis­la­tion
On 13 Novem­ber 2021, Law of Ukraine "On En­ergy Ef­fi­ciency" No. 1818-IX came in­to force(“Law”). The Law sets a leg­al frame­work for im­ple­ment­ing state en­ergy ef­fi­ciency policies ac­cord­ing to European...
Ukraine: Na­tion­al Com­mis­sion for State Reg­u­la­tion of En­ergy and Pub­lic...
On 17 Decem­ber 2021, the Na­tion­al Com­mis­sion for State Reg­u­la­tion of En­ergy and Pub­lic Util­it­ies of Ukraine (NEURC) is­sued its fi­nal de­cision on the cer­ti­fic­a­tion of the Joint Stock Com­pany Na­tion­al Power...
Hy­dro­gen law and reg­u­la­tion in Ukraine
1. Cur­rent state of hy­dro­gen pro­jects in Ukraine Hy­dro­gen is gain­ing in­creased re­cog­ni­tion in Ukraine as a pro­spect­ive en­ergy source that will as­sist the coun­try to meet its de­car­bon­isa­tion tar­gets...
Ukraine de­vel­ops draft le­gis­la­tion reg­u­lat­ing en­ergy stor­age
On 17 Septem­ber 2021, the Ukrain­i­an par­lia­ment re­gistered the Draft Law “On Amend­ment of Cer­tain Laws of Ukraine Re­gard­ing En­ergy Stor­age Sys­tems” No. 5436-д dated 17 Septem­ber 2021 (ESS Draft Law)...
Changes to Ukrain­i­an elec­tri­city mar­ket: Im­ple­ment­a­tion of new PSO mech­an­ism...
On 11 Au­gust 2021, the Cab­in­et of Min­is­ters of Ukraine ap­proved its Res­ol­u­tion No. 859 (PSO Res­ol­u­tion), which im­ple­ments a new mech­an­ism of pub­lic ser­vice ob­lig­a­tions (PSOs) in re­la­tion to the sup­ply...
Ukraine to in­tro­duce reg­u­la­tion of bio­meth­ane
On 9 Septem­ber 2021 the Draft Law No. 5464 dated 5 May 2021 was ad­op­ted in the first read­ing , which, if ad­op­ted in full, will es­tab­lish reg­u­la­tion on bio­meth­ane in Ukraine. In or­der to enter in­to force...
CMS ad­vises CWP on wind pro­ject ac­quis­i­tion in Ukraine
CMS Camer­on McK­enna Nabarro Olswang in Ky­iv has ad­vised CWP Europe (CWP) on the ac­quis­i­tion of 73MW wind pro­ject in de­vel­op­ment. The ac­quis­i­tion marks CWP’s first in­vest­ment in Ukraine.CWP Europe is...
Ukraine in­tro­duces draft laws fa­cil­it­at­ing use of elec­tric vehicles and...
In Ju­ly 2021, the Ukrain­i­an par­lia­ment ad­op­ted amend­ments to the Tax Code of Ukraine, which provide for cer­tain tax ex­emp­tions for im­ple­ment­a­tion of elec­tric vehicles (EVs) in Ukraine (EV Tax Amend­ments)...