Wyssam Mansour advises national and international companies and investment funds on their complex M&A, joint venture and private equity transactions, as well as their contractual structures.
He works mainly in the industrial, energy, natural resources and infrastructure sectors (energy, storage, digital infrastructure, mobility, etc.), in which he has significant experience.
Wyssam also puts his expertise to work for clients involved in new technologies and disruptive innovations, particularly deeptech.
Skills
Lawyer since : 2012
Bar. : Paris
Language(s) : French - English
Training :
- LL.M. – International Business Law, London Kings College, 2010
- Master II- Business law and taxation, Université Panthéon-Assas (Paris II), 2009
- Magistère – Economic Activities Law, Université Panthéon-Sorbonne (Paris I), 2009
Member of :
- Association Internationale des Jeunes avocats (AIJA)
- Advised Solvéo Energies in its fundraising of nearly 100 million euros led by Mirova
- Advised Conquest on its investment in E-Totem (a major player in the market for electric vehicle recharging solutions) and E-Totem Infrastructure 2
- Advised Tikehau Capital in its acquisition of Visco, a recognized player in high-precision mechanical machining for leading-edge industries such as defense, aeronautics, space, arms and energy
- Support for Orano in the acquisition by Orano Nuclear Packages and Services (Orano NPS) of Daher’s nuclear activities in Germany and North America
- Support for Orano in the acquisition by Orano Nuclear Packages and Services (Orano NPS) from Geodis of Société de Transports Spéciaux Industriels (STSI), specialized in multimodal transport of sensitive materials, in particular rail and road transport of nuclear materials
- Advised Plenium Partners and SWEN Capital Partners in Smart Energies’ €87 million fund-raising to accelerate its development
- Advised the shareholder of Sicat, a manufacturer of beta silicon carbide and carbon catalyst supports, in connection with the acquisition of a 50.1% stake in its share capital by Saint-Gobain Norpro, a business unit of Saint-Gobain Ceramics
- Advised TSE, a French solar energy company, in its €130 million fundraising with Eurazeo, Bpifrance and a pool of investors from the Crédit Agricole Group
- Support for Orano in its acquisition of KSB Service Energie (KSE) and its subsidiaries KSB Service Cotumer (KSC) and Société de Travaux et d’Ingénierie Industrielle (STII) from the German KSB group, a global player in the manufacture of industrial pumps and valves
Jeantet advises ACACIA in the conclusion of its alliance with EREN to develop, finance and operate more than 500MW of stand-alone BESS (Battery Energy Storage System) in France
Paris, June 6, 2025 – Jeantet advised Acacia, developer of renewable energy and primarily BESS projects in France, in the conclusion of its alliance with Eren to develop, build and operate a portfolio of BESS projects in France of more than 500MW, with nearly 200MW soon to start construction and more than 300MW in advanced […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises KEON on a €40 million bond financing arranged by SIENNA INVESTMENT MANAGERS
Paris, June 2, 2025 – Jeantet advised KEON Group, a leading French player in the biogas sector, on a €40 million bond financing arranged by Sienna Investment Managers. This strategic transaction marks a new milestone in KEON’s development and consolidates its position as a leader in the green gas sector. KEON operates across the entire […]
Paris | BANK-FINANCE-REGULATORY
Jeantet assists SOLVÉO ENERGIES in its fundraising of nearly 100 million euros led by MIROVA
Paris, 27 May 2025 – Jeantet has advised Solvéo Energies, an independent French renewable energy producer, committed to energy transition and firmly established in local territories, in a strategic fundraising of 98 million euros. This operation is led by Mirova, which invests in equity alongside historical investors. Solvéo Energies, an independent French renewable energy producer, […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advised PLENIUM PARTNERS and SWEN CAPITAL PARTNERS in the fundraising of €87 million of SMART ENERGIES to accelerate its development
Paris, 7 June, 2024 – Jeantet advised Plenium Partners’ and SWEN Capital Partners’ funds in their investment in Smart Energies, a French leading solar IPP, alongside the long-standing historical shareholders of Smart Energies, and RGREEN INVEST, which has supported the group since 2022. The capital increase amounts to €87 million and will accelerate the deployment […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises banking pool in connection with a new financing transaction for a portfolio of 331 photovoltaic power plants
Paris, April 3, 2024 – Jeantet assisted the banking pool, made up of BPIFrance, CIC and Unifergie, with a new project financing package developed by Tenergie. The transaction, valued at over one hundred million euros, involves the financing of a portfolio of 331 photovoltaic power plants located in France, installed on building roofs, on the […]
Paris | FINANCING
Jeantet assists the banking pool in connection with the financing of the Tenergie project
Paris, July 28, 2023 – Jeantet has advised the banking pool (CIC, BPCE Energéco and BPI France) in connection with the project financing transaction for Tenergie, a French developer and producer of renewable energies. The €78 million global financing transaction covers the funding of a varied portfolio of photovoltaic power plants: roofs on existing buildings, […]
Paris | BANK-FINANCE-REGULATORY
Jeantet advises Susi Partners in the acquisition of a majority stake in french renewable energy developer Apal MW
Paris, on July 18, 2023, Jeantet advises SUSI Partners in the acquisition, through the SUSI Energy Transition Fund, of a majority stake in newly formed APAL MW (APAL), a French clean energy development company born out of the merger of French wind and solar developers 3N Développement and L’Agence de Développement des ENR (ADE). By […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advises the banking pool on the financing of the Falcon Project
Paris, June 30, 2023 – Jeantet has assisted the banking pool, made up of the Crédit Agricole group under the aegis of Unifergie, a subsidiary of Crédit Agricole Leasing & Factoring, the Caisse Régionale Sud Rhône Alpes and six other regional branches, in financing the Falcon project developed by Q Energy. The deal, valued at […]
Paris | BANK-FINANCE-REGULATORY | FINANCING | CORPORATE – M&A – PRIVATE EQUITY | ENERGY
Jeantet advised the shareholder of Sicat, a manufacture of beta silicon carbide and carbon catalyst supports, in the acquisition of 50,1% stake in its share capital by Saint-Gobain Norpro, a business unit of Saint-Gobain Ceramics
Paris, on May 17, 2023, Jeantet advised the shareholder of SICAT, a manufacturer of beta silicon carbide and carbon catalyst supports, in the acquisition of a 50.1% stake in its share capital by Saint- Gobain NORPRO, a business unit of Saint-Gobain Ceramics. SICAT manufactures highly technical catalyst support products with unique chemical, thermal and mechanical […]
Paris | CORPORATE – M&A – PRIVATE EQUITY | EMPLOYMENT
Jeantet assists TSE in its €130 million fundraising to strengthen its position as a major in the energy transition in France
Paris, April 20, 2023 – Jeantet has advised TSE, a French solar energy company, in a €130 million fundraising from three major operators in the energy transition sector: Eurazeo, which is leading this round, Bpifrance and a pool of investors from the Crédit Agricole group, represented in particular by IDIA Capital Investissement and Amundi. With […]
Paris | CORPORATE – M&A – PRIVATE EQUITY | RENEWABLE ENERGY – RE | ENERGY AND NATURAL RESOURCES LAW
Jeantet assists Conquest in connection with its investment in E-Totem and E-Totem Infrastructure 2
Paris, March 28, 2023 – Jeantet has advised Conquest, an independent asset manager recognized for investing in real assets in the infrastructure and energy transition sectors in Europe, in (i) its investment, alongside Bpifrance, in the capital of E-Totem, and (ii) in its investment in E-Totem Infrastructure 2 In order to support the growth of […]
Paris | CORPORATE – M&A – PRIVATE EQUITY
Jeantet advised Tikheau Investment Management in refinancing the acquisition of Visco and the entry of minority investors in Visco’s capital
Paris, March 3, 2023, following the acquisition of Visco by Tikehau Investment Management in July 2022, Jeantet has assisted Tikehau Investment Management, the private equity business of Tikehau Capital, in the entry, as minority investors, of investment vehicles represented by Crédit Agricole Régions Investissement (Carvest) in the capital of Visco, a recognized operator in high-precision […]
Paris | CORPORATE – M&A – PRIVATE EQUITY | BANK-FINANCE-REGULATORY | TAX