Rembrandt Foundation Inc.

The Constellation Foundation (Rembrandt Foundation Inc.) is a corporate foundation tied directly to Constellation Energy Corporation, the nation's largest producer of carbon-free energy. Unlike independent foundations with broad mandates, this foundation's grantmaking is tightly aligned with Constellation's corporate priorities: STEM/clean energy education, environmental stewardship in nuclear plant communities, and workforce development.

Your first move is determining which program fits your work. E2 Energy to Educate is the flagship — if you are an educator or institution with a STEM/energy project for students grades 6 through college, this is your entry point. The CLEAN Awards are for nonprofits doing environmental work specifically in communities near Constellation nuclear facilities. Community Champions is a micro-grant channel for Constellation customers.

For E2, the application window is tight: open in August, due October 1. Projects must align with one of three innovation themes. Past winners include hydrogen fuel cell training programs, mobile STEM labs, wind/solar design competitions, and nuclear technology scholarships. The strongest applications demonstrate direct student impact, career pathway development, and alignment with clean energy workforce needs.

For CLEAN Awards, geographic proximity to a Constellation nuclear plant is a hard requirement. Focus areas include biodiversity, climate adaptation, ecosystem protection, and environmental education. Grants range from $4,000 to $125,000.

The foundation's rapid asset growth ($19.5M to $51.8M in four years) and the launch of the CLEAN Awards as a second major program suggest this is a foundation in expansion mode. Proposal writers should frame projects around the energy transition narrative that Constellation Energy uses in its corporate communications — clean energy, nuclear innovation, decarbonization, and equitable access to STEM careers.

The Constellation Foundation has undergone dramatic financial transformation since Constellation Energy's February 2022 spinoff from Exelon Corporation.

Total assets grew from $19.5 million in 2020 to $51.8 million in 2024 — a 165% increase driven primarily by corporate contributions. In FY2024, the foundation received $10 million in contributions (83.7% of total revenue), supplemented by $1.6 million in dividend income and $344K from asset sales.

Annual giving has tracked upward but remains modest relative to asset base: $1.01 million in 2020, approximately $2.37 million in 2024. This represents a payout rate of roughly 4.6% of assets — close to the IRS minimum for private foundations, suggesting room for increased distributions.

Grant activity by year: - 2020: 18 awards, $1.01M total - 2021: 12 awards across 8 states - 2022: 2 awards only (IL, MD) — the spinoff transition year - 2023: 15 awards across CT, IL, MD, NY, PA, VA - 2024: $2.37M across E2 ($500K), CLEAN ($1M+), and general grants - 2025: E2 ($500K+ across 24 projects), CLEAN ($1.1M across 46 projects)

The typical grant range spans $4,000 to $260,000, with E2 grants clustered at $25,000-$50,000 and CLEAN Awards ranging $4,000-$125,000. The foundation has zero liabilities and all officers serve without compensation, keeping administrative overhead minimal.

The foundation's financial trajectory strongly suggests continued growth in annual giving as the asset base stabilizes and Constellation Energy's post-spinoff corporate identity solidifies.

The Constellation Foundation competes in the corporate energy foundation space, where it is a mid-tier player by assets but a smaller giver relative to peers.

Key differentiators: Constellation Foundation's $2.4M annual giving is the smallest among major energy company foundations, but its asset base ($51.8M) is competitive with Exelon. The foundation's grantmaking is more narrowly focused on STEM/clean energy education and environmental stewardship than peers. The E2 Energy to Educate program ($6.5M cumulative, 300K+ students) is a distinctive competitive advantage — no peer foundation operates a comparable dedicated STEM education program. The CLEAN Awards represent a unique environmental stewardship program tied directly to nuclear plant communities.

Note: Constellation spun off from Exelon in February 2022, explaining the low 2022 grant activity and suggesting the foundation is still building toward its full grantmaking capacity.

The Constellation Foundation entered 2025-2026 with significant momentum across both of its major grant programs.

In November 2025, the E2 Energy to Educate program awarded more than $500,000 across 24 projects in nine states, reaching 31,000+ students — a substantial increase from 2024's 20 projects reaching 12,000 students. Winning projects included building solar-powered vehicles, designing renewable energy systems, exploring battery and inverter technologies, and advanced nuclear training.

In October 2025, the second annual CLEAN Awards distributed nearly $1.1 million to 46 environmental stewardship projects operated by 34 nonprofits across Constellation's nuclear plant communities in Illinois, Maryland, New York, Pennsylvania, and Texas. Projects ranged from installing living shorelines and restoring native habitats to supporting aquatic recovery centers and advancing environmental education, with grants from $4,000 to $125,000.

The foundation's FY2024 financials showed total revenue of $11.9 million — up significantly from prior years, driven by a $10 million corporate contribution from Constellation Energy. Total charitable disbursements reached $2.37 million, with assets growing to $51.8 million.

Leadership changes in 2024 saw Kathleen Barron named Chair and David Dardis named President, reflecting post-spinoff executive realignment at Constellation Energy.

1. Choose the right program. E2 Energy to Educate is for educators and students (grades 6 through college) doing hands-on STEM and energy projects. CLEAN Awards are for nonprofits near Constellation nuclear plants doing environmental stewardship. Community Champions is for Constellation customers seeking micro-grants up to $500.

2. Know the E2 timeline. Applications open in August, deadline is October 1 annually. Winners announced during American Education Week in November. This is a tight window — begin drafting in July.

3. Align with innovation themes. E2 applications must map to one of three themes: (a) Access in Energy — strategies to engage underserved populations in STEM/energy careers; (b) Sustainability Amidst Growing Energy Needs — addressing electrification, AI, and decarbonization; (c) Nuclear Technology & Clean Energy — leveraging nuclear and emissions-free generation.

4. Quantify student impact. Past winners consistently demonstrate large-scale student engagement. The 2025 cohort reached 31,000+ students across 24 projects. Structure your budget and implementation plan to maximize student reach per grant dollar.

5. For CLEAN Awards, verify geographic eligibility. Your organization must serve communities near Constellation nuclear generating stations in Illinois, Maryland, New York, Pennsylvania, or Texas. This is a hard requirement.

6. Reference the energy transition narrative. The foundation is deeply tied to Constellation Energy's corporate identity as the nation's largest clean energy producer. Frame your work within the broader clean energy transition, nuclear innovation, or decarbonization context.

7. Access program information through constellationenergy.com. The legal entity's website (rembrandtfoundation.org) is non-functional. All applications and program details are on the Constellation Energy community impact page.