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Energy & Climate Change

With more than 450 energy and climate change lawyers, including over 100 partners, the CMS Energy and Climate Change practice is one of the largest of its kind in the world. Led from its centres of excellence such as London and Aberdeen, the practice works across 75 offices globally. Our early work in designing and implementing modern energy markets and subsequently guiding the sector in the push to decarbonisation means CMS is not only a transactional or project adviser to the sector, but uniquely placed to help shape its present and future.

A key driver of the global economy, the energy and climate change sector is affected by geopolitical, economic and regulatory pressures. You require advisors who understand your industry and work with leaders of energy companies, regulators, governments, industry bodies and investors on the cutting edge of commercial, regulatory and risk issues in the sector. Based across 15 jurisdictions in Central and Eastern Europe, we have been active in CEE since the beginning of the privatisation and liberalisation of the energy and climate change sector across the region. We have helped to shape the sector by advising on the most high-profile and ground-breaking projects and transactions over many years.

Our dedicated energy and climate change lawyers work in every part of the sector, including upstream and downstream oil & gas, electricity, nuclear and renewables. Whether you are a NOC, IOC, independent, electricity company, investor, government or financial institution, we have the energy specialists to meet all your strategic challenges globally. Our multi-disciplinary teams were among the first to advise on ground-breaking global oil and gas M&A and on power projects in Europe, to establish a single electricity market in Northern Ireland and the Republic of Ireland, lead historic electricity industry reform in Mexico, and work on renewable energy projects globally.

In Poland we advise clients on a wide range of investment projects and regulatory issues. We also represent clients before regulators.

Our team has been recognised as the leading energy practice for over 10 years.


The En­ergy Reg­u­la­tion and Mar­kets Re­view – Tenth Edi­tion
Pio­tr Ciołkowski, part­ner and head of the reg­u­la­tion prac­tice for the en­ergy sec­tor at CMS Po­land, and Ada Szon, as­so­ci­ate in the en­ergy and pro­jects prac­tice, have re­cently au­thored the Pol­ish chapter...
CMS ad­vises Green Geni­us on the sale of its next photo­vol­ta­ic pro­ject in...
In­ter­na­tion­al law firm CMS has ad­vised Green Geni­us, part of Lithuania’s Mod­us Group and one of the lead­ing de­velopers in the re­new­able en­ergy sec­tor, on the sale of a 42.3-MW sol­ar pro­ject port­fo­lio...
The Re­new­able En­ergy Law Re­view – Pol­ish chapter
Pio­tr Ciołkowski, part­ner and head of the Reg­u­lat­ory prac­tice for the en­ergy sec­tor at CMS Po­land, and Ada Szon, as­so­ci­ate in the En­ergy and Pro­jects prac­tice, have re­cently au­thored the Pol­ish chapter of the 2021 edi­tion of The Re­new­able En­ergy Law Re­view. The chapter gives a com­pre­hens­ive over­view of the Pol­ish re­new­able en­ergy mar­ket, provid­ing an in-depth look at the policies, leg­al struc­tures and state of play in the re­new­able en­ergy in­dustry in Po­land. It also of­fers a wide-ran­ging guide to the leg­al frame­works and cur­rent status and chal­lenges in struc­tur­ing, fin­an­cing and in­vest­ing in re­new­able en­ergy pro­jects in Po­land.  
Re­ima­gin­ing Trans­port: Hy­dro­gen Trains
In the first in our Re­ima­gin­ing Trans­port series, we look at the po­ten­tial for hy­dro­gen powered trains to be­come a part of the rail net­work’s move to net-zero. Already in op­er­a­tion in se­lect rail lines...
Oil & Gas – You re­ject if you want to, the Product is not for re­jec­tion!
The Com­mer­cial Court has de­cided that a Buy­er un­der the BP Gen­er­al Terms and Con­di­tions for Sales and Pur­chases of Crude Oil and Pet­ro­leum Products 2015 Edi­tion was not en­titled to re­ject off-spec Product...
CMS ad­vises Cin­ven port­fo­lio com­pany on ac­quis­i­tion in Po­land”
CMS has ad­vised Part­ner in Pet Food (PPF), a port­fo­lio com­pany of in­ter­na­tion­al private equity firm Cin­ven, on its ac­quis­i­tion of Mispol S.A., a Pol­ish pet food pro­du­cer. This week PPF an­nounced that...
Fit for 55: A new cli­mate pack­age
On 14 Ju­ly 2021, the European Com­mis­sion pub­lished the largest le­gis­lat­ive pack­age re­lated to the cli­mate and en­ergy: “Fit for 55”. The main as­sump­tion of the new pack­age is a re­duc­tion of 55% in...
CMS ad­vises PKN OR­LEN on Europe's largest pet­ro­chem­ic­al in­vest­ment
CMS law firm ad­vised PKN OR­LEN on the con­struc­tion of the Ol­efins III pet­ro­chem­ic­al com­plex – the largest pet­ro­chem­ic­al in­vest­ment in Europe in the last 20 years and the largest pet­ro­chem­ic­al pro­ject...
What to ex­pect from the European Com­mis­sion’s re­vised Cli­mate, En­ergy and...
On 7 June 2021, the European Com­mis­sion has launched a pub­lic con­sulta­tion in­vit­ing in­ter­ested parties to com­ment on the draft Guidelines on state aid for cli­mate, en­vir­on­ment­al pro­tec­tion and en­ergy...
EDPB ap­proves first EU GDPR Code of Con­duct for Cloud Ser­vice Pro­viders
Fol­low­ing the sub­mis­sion by the Bel­gian Data Pro­tec­tion Au­thor­ity, on May 19 the European Data Pro­tec­tion Board (EDPB) ap­proved the EU Cloud Code of Con­duct with sub­sequent fi­nal ap­prov­al by the Bel­gian...
Road to COP 26: re­ima­gin­ing en­ergy: just trans­ition
As we ap­proach COP 26, there is ex­tens­ive dis­cus­sion of the shift to net zero and how it will be achieved; a large part of this will be the trans­ition from re­li­ance on fossil fuels to a more en­vir­on­ment­ally...
New GDPR Code of Con­duct ap­proved for Cloud In­fra­struc­ture Ser­vice Pro­viders
The European Data Pro­tec­tion Board (EDPB) and the French Data Pro­tec­tion Au­thor­ity (CNIL) ap­proved the CISPE Data Pro­tec­tion Code of Con­duct of Cloud In­fra­struc­ture Ser­vice Pro­viders in Europe (CISPE...