Summer Intern to Chief of Staff, External Affairs & Growth; Washington

As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute.

Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, with the generating capacity to power the equivalent of 27 million homes.
Our culture and employee experience make it clear:
We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our people are the driving force behind our success. At Constellation, you can build a fulfilling career with opportunities to learn, grow and make an impact. By doing our best work and meeting new challenges, we can accomplish great things. Join us in meeting the country's energy needs today and tomorrow.

Support the Chief of Staff to the Chief External Affairs & Growth Officer through policy and business research, executive briefing preparation, project coordination, and tracking of organizational priorities. The intern will synthesize complex information into clear, actionable materials and support internal and external engagements involving energy, regulatory, legislative, political, and market issues. Constellation's 2027 Summer Intern Program will run approximately 10 weeks, from June 7, 2027, through August 13, 2027.

This internship offers a unique opportunity to see how strategy, public policy, legal, communications, sustainability, advocacy, and development come together. The intern will work directly with the Chief of Staff and support projects that cut across the External Affairs & Growth organization, gaining exposure to senior leaders, enterprise priorities, and the processes behind executive decision-making.

A significant part of this work is policy-focused and centers on preparing the Chief External Affairs & Growth Officer for both internal and external engagements. The intern will help research the energy, regulatory, legislative, and political issues that shape Constellation’s business, and turn that research into the briefings, talking points, and background materials.

This is a great opportunity for someone interested in the intersection of energy, public policy, politics, corporate strategy, communications, and organizational leadership who wants hands‑on experience seeing how a large, complex organization turns priorities into action.

External Affairs & Growth brings together teams responsible for Legal;
Public Policy;
Sustainability & Policy Analysis;
Strategy, Corporate Affairs & Public Advocacy; and Development. The organization works across a wide range of issues affecting Constellation and the energy industry, bringing together different functions and perspectives to advance shared priorities.

• Conduct research on energy, public policy, legislative, regulatory, political, and market issues and summarize relevant findings for executive decision-making and engagements.

• Draft and edit briefing materials, issue summaries, stakeholder profiles, talking points, presentations, meeting materials, and other executive communications.

• Support preparation for leadership meetings and external engagements by developing agendas and materials, documenting decisions and action items, and coordinating follow-up.

• Assist with cross-functional projects by organizing information, maintaining project plans and trackers, monitoring timelines…