
At Integrites, lead partner Oleksiy Feliv is a recognised expert in renewable energy, which is the firm’s strongest focus in the energy market, though it also handles transactions and disputes in the oil and gas sector. The firm ‘excels in its deep expertise and innovative approach’, and clients appreciate Feliv’s ’international development experience coupled with in-depth local knowledge’. The firm has a seven-partner climate change task force, in which Oleh Zahnitko provides regulatory and finance advice on energy transactions. The firm recently hired real estate and construction specialist Anna Pogrebna from CMS.
Testimonials
Collated independently by Legal 500 research team.
‘The firm covers all the disciplines needed in order to operate in Ukraine. A very strong renewables practice. Well-connected to policy makers. Ability to influence policy and law-making.’
‘Olekiy Feliv is the top renewables expert in Ukraine. International development experience coupled with in-depth local knowledge, and a strong network in country. ’
‘INTEGRITES' energy practice stands out for its deep expertise in the energy sector, especially in renewable energy and energy transition projects. The team is highly specialised and well-versed in navigating both the regulatory and commercial landscapes of energy law. One of their strengths is the ability to handle complex, large-scale projects while remaining flexible and responsive to client needs.'
- 'Their ability to adapt to legislative changes, particularly in renewable energy, makes them an essential partner for businesses seeking to thrive in this sector.’
‘Oleksii Feliv, managing partner, is a standout leader and a key reason for the firm’s success in the energy sector. He brings exceptional insight into the regulatory framework governing energy projects, particularly in renewable energy and infrastructure. His leadership style is characterised by a strong vision, strategic foresight and a deep commitment to innovation. What distinguishes Oleksii from his peers is his ability to foresee industry trends and provide clients with proactive solutions. We have particularly valued his pragmatic approach, his ability to simplify complex legal challenges and his unwavering dedication to client success.’
‘Integrites is the go-to firm for energy projects in Ukraine, especially for renewable energy and the energy transition. Its commitment to Ukraine's green recovery is underscored by its creation of a dedicated Climate Change Task Force. This is a dedicated group of lawyers committed to the sector.'
- 'Integrites has the deepest renewable energy experience in Ukraine having acted on over 2 GW of renewable energy in Ukraine. It is particularly strong in onshore wind.'
‘Serhii Datsiv is growing into a highly effective lawyer in the renewables sector. He is presents advice in a commercial and user-friendly manner.'
Key clients
- PJSC NPC 'Ukrenergo'
- Wärtsilä Corporation OU and Wärtsilä Finland OY
- NJSC 'Naftogaz of Ukraine'
- Notus Energy
- Emergy AS (Zophia project)
- Emergy AS (Syvash project)
- Eurocape Ukraine Lviv
Work highlights
- Advising the Supervisory Board of NJSC 'Naftogaz of Ukraine', an oil and gas company, on the matters related to the activities of the supervisory board of the company and its committees.
Advising Wärtsilä Corporation OU and Wärtsilä Finland OY on modelling, origination, finance and security documentation of approximately EUR 500 mln project on modernization of the district heating in several regions of Ukraine.
Advising Notus Energy, a German solar and wind developer, on a portfolio of projects in Ukraine with the total capacity of 1.3 GW, including the development of the 120 MW Libental wind farm in Odesa Region, Ukraine.
Lawyers

Practice head
The lawyer(s) leading their teams.
Oleksiy Feliv