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Cecilia Weijden
Partner

Cecilia van der Weijden

Advocaat | Head of Energy & Climate Change, Netherlands

Languages
  • Dutch
  • Italian
  • English
  • German
  • Chinese
Social media

Cecilia van der Weijden is a partner in our Corporate/M&A Practice Group and heads the Dutch energy & climate change team at CMS. She has a strong focus on the energy industry. For more than twenty years she has been dedicated to advising the energy sector on a wide variety of corporate and regulatory issues, including mergers and acquisitions and the development and project financing of (renewable) energy projects. As a transactional lawyer, she got acquainted with the energy sector in the late ‘90s, when a wave of mergers and acquisitions took place in the Dutch energy sector. She then expanded her practice to advice on conventional and renewable energy projects and now has a strong focus on renewable energy (on and offshore wind, solar, biomass and biogas projects) and EV infrastucture.

​Cecilia has advised on a number of pathfinder projects, such as the development the first Dutch offshore wind park (OWEZ), the participation of launching customers in the GATE LNG Terminal, the successful participation of DONG Energy in the first Dutch offshore wind tender, the acquisition, development and project financing of the largest solar PV park and the conclusion of two large corporate PPAs by global tech companies.

She frequently publishes articles on developments in the energy sector and is editor of the CMS Guide for offshore wind in North West Europe.

Awards & Recognitions
01
  • Quote
    "Cecilia van der Weijden did a great job and was very responsive to all our questions. We were very content with the work that she delivered."
    Chambers Europe, 2025
  • Quote
    "Cecilia van der Weijden has a proactive mindset. She is also client-focused and always on top of the matters."
    Chambers Europe, 2025
  • Quote
    "Cecilia van der Weijden is a personable and responsive corporate lawyer."
    Chambers Europe, 2025
  • Quote
    "Cecilia van der Weijden is a prompt contact and coordinates the team well across different issues."
    The Legal 500 EMEA, 2025
  • Quote
    "Femke Stroucken knows real estate inside out. Does not need to raise her voice as she is an unchallenged expert. Cecilia van der Weijden knows the energy market like the back of her hand. Very well connected."
    The Legal 500 EMEA, 2025
  • Quote
    "Cecilia van der Weijden knows her field; she is always a strong lead for our cases."
    Chambers Europe, 2024
  • Quote
    "One of her biggest strengths is that whilst she has a sharp understanding of complex legal issues, she is able to translate them into a relatively straightforward document everyone can understand."
    Chambers Europe, 2024
  • Quote
    "Cecilia is great to work with."
    Chambers Europe, 2023
  • Quote
    "Cecilia van der Weijden stands out because of her professionality, dedication and problem-solving skills."
    The Legal 500 EMEA, 2023
  • Quote
    "Especially Cecilia van der Weijden is one of the best energy lawyers in the market."
    The Legal 500 EMEA, 2023
  • Quote
    "Cecilia van der Weijden’s attitude and composure is apt and professional, always finding a solution no matter the situation, due to her excellent communication skills and professional expertise."
    The Legal 500 EMEA, 2023
  • Quote
    "I appreciate Cecilia’s deep knowledge and experience of the energy industry, and her practical and commercial approach that fits the needs of our business."
    The Legal 500 EMEA, 2022
  • Quote
    "Cecilia has a keen eye for understanding what sort of support is needed."
    Chambers Europe, 2022
  • Quote
    "Stands out due to her in-depth knowledge, her professionalism and her exquisite communication and language skills."
    The Legal 500 EMEA, 2021
  • Quote
    "Very practical and can close a deal in a shorter time than you expect."
    The Legal 500 EMEA, 2021
  • Quote
    "A strong energy lawyer," according to interviewees."
    Chambers Europe, 2021
  • Quote
    "Cecilia van der Weijden is a smart, capable, and considerate M&A lawyer. She knows how to navigate negotiations and eloquently control winning positions. Her management of due diligence processes and promptly staying on top of deal topics demonstrates her decade plus of experience in the Dutch market. She is available for adhoc discussions and provides relevant negotiation tactics. She knows how to trouble shoot if/when issues present themselves."
    The Legal 500 EMEA, 2020
  • Quote
    "Recognised for her experience handling M&A and investments into energy projects, particularly the renewable sector."
    Chambers Europe, 2020
  • Quote
    She addresses client concerns immediately and stays informed on all topics”, adding: "She knows how to see deals through and doesn't waste time.
    Chambers Europe, 2020

Relevant experience

  • Advised Nuveen Infrastructure (previously named Glennmont Partners) on its acquisition of a 15% interest in Dutch operational offshore wind park Borselle III & IV from Partners Group.
  • Advised Venterra on the acquisition Cape Holland, a supply company to the offshore sector that provides offshore Vibro piling solutions.
  • Advised EPEX SPOT SE, EEG AG and Powernext SA on the merger with APX Group and the integration of their businesses to form a power exchange for Central Western Europe and the UK.
  • Advised Cheung Kong Infrastructure Holdings Ltd. (CKI) on the acquisition of waste-to -energy company AVR (EUR 943.7 million).
  • Advised a joint venture of WIRCON et al on the development of Solarpark Valgenweg and the partial sale of its shares in Solarpark Valgenweg to its co-shareholder Bronnen Van Ons.
  • Advised multiple bidders on their participation in controlled auctions of offshore and onshore wind projects and solar PV projects.
  • Advised multiple national and international solar PV developers and investors (confidential) on the  development and project financing of solar PV plants in the Netherlands, including on the drafting and negotiation of project agreements such as PPAs, grid connection agreements and agreements to secure property rights.
  • Advised Microsoft on a Power Purchase Agreement (PPA) with Vattenfall to source ITS Dutch datacenters with wind energy from new to be built windpark Wieringermeer.
  • Advised a global tech company (confidential) on a Power Purchase Agreement (PPA) with ENECO to source its Dutch facilities with renewable energy.
  • Advised Nederlandse Spoorwegen (Dutch Railways) and other Dutch rail operators on the purchase of renewable electricity and the associated guarantees of origin for their rail operations during the period 2025-2027.
  • Advised 85 Degrees Renewable Holding in relation to two geothermal heat projects, located in the Province of Groningen for the supply of geothermal heat to horticultural companies, including on the heat supply agreements, the connection and transport agreements and the operating agreements.
  • Advised Aroundtown to achieve sustainability for its Dutch real estate portfolio through rooftop solar photovoltaic (PV) installations and the development and operation of an aquifer thermal energy storage (ATES) system for the supply of heat and cooling.
  • Advised Allego with the expansion of its business, which consists of the development and operation of charging points for electric vehicles, in and beyond the countries where it currently operates.
  • Advised NeuConnect (a joint venture formed by Meridiam, Allianz Capital Partners, and Kansai Electric Power) on the regulatory issues involved in the development, construction, and operation of the NeuConnect Interconnector.
  • Advised National Grid Plc on the drafting and negotiating of a joint development agreement, to realise, in collaboration with Dutch TSO TenneT BV, a multi-purpose interconnector (the so-called LionLink) between the Netherlands and the UK with a capacity of 1.8 GW.
  • Advised multiple parties (including distribution centers, data centers and battery storage developers) on congestion management and capacity limitation agreements with grid operators.

Memberships & Roles

  • Member of the Dutch Association for Energy Law (NEvER)
  • Member of the Dutch Association for Wind Energy (NWEA)

Awards & Rankings

  • Chambers Europe, 2025, Ranked in Energy & Natural Resources: Transactional
  • Chambers Europe, 2025, Ranked in Energy & Natural Resources: Regulatory
  • The Legal 500 EMEA, 2025, Cecilia van der Weijden is Recommended
  • Who's Who Legal, 2023, Global Leader in Energy - Oil & Gas
  • Women in Business Law Award EMEA, 2020, Best in Energy, Natural Resources, and Mining Lawyer of the Year

Education

  • International Relations (int. economy and law), Johns Hopkins University, Bologna, Italy
  • Dutch Law (Commercial and Private Law), University of Amsterdam
  • Chinese Language, Xiamen University, China
  • Sinology, Leiden University