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Altelaw&Sempra is a Ukrainian boutique law firm with leading expertise in Energy, Construction, and Government Relations.

With over 14 years of market presence, the firm has established a reputation as a trusted legal advisor capable of guiding complex, innovative, and strategic projects within the energy sector.

Following a merger in September 2025, the firm expanded its practices and strengthened its team to provide businesses with comprehensive solutions — ranging from the legal structuring of energy projects to supporting large-scale initiatives for Ukraine’s reconstruction.

The team offers legal support both for specific client matters and for full-cycle, “turnkey” project implementation. Specifically, Altelaw&Sempra’s track record covers the legal aspects of project development and due diligence, construction of energy facilities, privatization, licensing, and tariff setting support. The firm also handles the negotiation of essential market agreements, fundraising and investment acquisition, credit financing, M&A transactions for energy enterprises, and the legal structuring of trading and supply operations, as well as dispute resolution and defense during regulatory inspections.

Altelaw&Sempra is dedicated to advancing renewable energy, decentralized generation, and providing legal support for Ukraine’s energy transition.

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Membership and partnership

Odesenergomontazh LLC The “Oсean” Plant Notus Energy SEMIKS BETON Ingenieursozietät Prof. Katzenbach GmbH Horizon Capital MOSTY UKRAINE 1 LLC ERU Dentons ACCIONA Energy PRYKARPATTYA ALTERNATIVE POWER LLC Chemlaborreaktiv LLC Business in Wind Altelaw&Sempra Dragon Capital Trancom YUZHMASH МЦ Баухемі Віндкрафт Україна Baker McKenzie  Gresa Group TAD Stable Energy UN Global Compact Ukraine FRIENDLY WINDTECHNOLOGY КСП-ПРОЕКТ Nordex Group MCL ENERGY TRADE GROUP (ETG.UA) WPD CMS Legiontrans Metropoliya science and technology company LLC LLC “Scientific Ecological Center ‘Green Square” UKEP LLC GEO-NET ENERCON ENERPROF Group Bureau Veritas State Agency on Energy Efficiency Kinstellar Sika New Energy Development Institute of International Relations CWP Ukraine LLC ETR Renewable Power s.r.o. Sayenko Kharenko Ukrgasbank Dnipro Polytechnic UA RENERGY Deutsche WindGuard Ternopil Ivan Puluj National Technical University UDP Renewables JSC “WEST FINANCE AND CREDIT BANK” GE Vernova DWS DENZAI Wind Power LLC VOLTAGE GROUP Dealex Transport Ukraine Cemark та Astor Acquis Law Firm Huawei EuroCape ТОВ «Керуюча компанія «Вітряні парки України» National Aviation University Fenix Repower Green Power Denmark Electroservice-Yug LLC  Green Power Sweden Ukrainian Bar Association VIKOS CKS Elementum Energy Atlas Global Energy Южне Енерджі CHESM Gattowind UA Siemens Energy The CLEAR ENERGY KENK SPP Development Ukraine Arzinger Public Union “All-Ukrainian Energy Assembly” EnerLoop International Online Platform INIKTI Emergy AS JSC “Energy Company of Ukraine” Singa Energies Vitry Khmelnychchyny WIND FARM ODESKRANSERVICE S POWER LCF Niras CRANE UKRAINE EVERLEGAL Negabarit-Service Katwind Enerji Rystad Energy LLC “Sit in Set International Co” OVERSIZE s.r.o.  KPMG TUSIB GREEN SYSTEM Zolin LLC STRUCTUM LLC VITAGRO ENERGY AdviRES ІКNЕТ INTEGRITES Eco-Optima Naftogaz Bioenergy COWI MHP Institute of General Energy of NAS of Ukraine Bureau “VINK” LLC Navitas Renewables FACTOR Asters NedZero Güriş The Institute of Renewable energy of the NAS of Ukraine Chervonohrad Lyceum Hareket KNESS UTA (Urban Technology Alliance) Ukrhydroenergo Vestas Greenville Energy

Members and partners of UWEA can be national and international companies and organizations that share the statutory goals and vision of the association, and are also ready to contribute to the development of the national wind energy market on the basis of honest partnership and mutual assistance.