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Maciej Ziółkowski


CMS Cameron McKenna Nabarro Olswang Pośniak i Bejm sp.k.
Warsaw Financial Centre
ul. Emilii Plater 53
00-113 Warsaw
Languages Polish, English

Maciej Ziółkowski is an attorney-at-law and a counsel in the Energy and Projects Department at CMS Poland. He has over 12 years’ experience advising the largest Polish and international electricity, gas, heating and chemical companies.

He has advised on numerous M&A transactions on the Polish energy market, especially in the renewable energy sources (RES) sector. Among others, Maciej has recently successfully headed the acquisition of one of the largest onshore wind farms in Poland for a German investor and he advised on its construction process. He also recently led a transaction for one of the world’s largest investors in the RES sector comprising the successful acquisition of an operational windfarm in northern Poland. 

Maciej provides day-to-day legal and business advice on projects implemented in the Baltic Sea, primarily on issues related to the investment process for offshore gas pipelines and drilling platforms. His experience also covers advice to clients developing offshore wind farms in the Baltic Sea.

He has significant professional experience in advising on EPC contracts for chemical industry facilities and power units, and also on contracts to supply RES installations as well as agreements covering the operation and maintenance of such facilities.

Maciej also has extensive experience in providing legal advice to clients in the oil & gas sector in investment processes concerning greenfield projects. 

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Relevant experience

  • A foreign investor on the implementation of a project comprising the construction of two offshore platforms and over 100km of the subsea gas pipeline in the Baltic Sea, and the construction of an onshore gas treatment plant and gas pipeline with a length of 30km.
  • Stadtwerke München on the acquisition of as well as construction process concerning the onshore Jasna wind farm comprising 39 turbines with a total capacity of 132 MW, which is one of the largest wind farms in Poland.
  • Green Investment Group on the acquisition of the operational 48 MW onshore Zajączkowo windfarm.
  • A foreign investor on the purchase of a developed onshore wind farm in Poland with a total capacity of approx. 70 MW. 
  • A foreign investor on an operational onshore wind farm in Poland with a total capacity of 20 MW.
  • Modus Group on the development and sale of a solar farm portfolio with a total capacity of 45.4 MW.  
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Memberships & Roles

  • Warsaw Bar Association of Attorneys-at-Law
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  • 2008 - Florida State University & University of Warsaw, American Law Center, Florida.
  • 2008 - University of Warsaw, Faculty of Law and Administration, Warsaw.
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CMS ad­vises Green In­vest­ment Group on the next trans­ac­tion in the Pol­ish...
CMS ad­vised Macquar­ie’s Green In­vest­ment Group (GIG), on the ac­quis­i­tion of a 25.3 MW op­er­at­ing on­shore wind farm in Jozwin, loc­ated in west­ern Po­land. The pre­vi­ous own­ers of the pro­ject were Vor­tex...
CMS ad­vises Green In­vest­ment Group on the next trans­ac­tion on the Pol­ish...
CMS ad­vised Green In­vest­ment Group, owned by Macquar­ie, on the ac­quis­i­tion of the Za­jączko­wo wind farm loc­ated at Kobyl­nica, Po­mor­skie Province. The pre­vi­ous own­ers of the pro­ject were the com­pan­ies...
Fur­ther pro­mo­tions at CMS in Po­land
Mateusz Wosiek and An­drzej Za­jąc from the Real Es­tate and Con­struc­tion Team, as well as Ma­ciej Ziółkowski from the En­ergy and Pro­jects De­part­ment, have been pro­moted to Coun­sel at CMS.“These nom­in­a­tions...