By Heather Clancy
As the global push for decarbonization intersects with the unprecedented energy demands of the artificial intelligence revolution, the organization at the center of the corporate clean energy movement is undergoing a significant transformation. The Corporate Energy Buyers Association (CEBA), formerly known as the Clean Energy Buyers Alliance, has announced a major leadership transition, marking a new chapter in its efforts to bridge the gap between corporate sustainability goals and the realities of the power grid.
Mike Mattera, the director of corporate sustainability for data center giant Akamai Technologies, has been appointed as the new chair of the association. He succeeds Michael Terrell, Google’s head of advanced energy, who has helmed the organization since its independence in 2019. Alongside this leadership change, Emily Williams, vice president of sustainability and clean energy at advisory firm Trio, has been named vice chair, succeeding General Motors’ director of global energy strategy, Rob Threlkeld.
This transition is more than a change of personnel; it represents the maturation of an organization that has grown from a niche group of environmental advocates into a powerhouse of global energy procurement.
The Chronology of an Energy Powerhouse
The roots of CEBA run deep into the early days of corporate climate activism. Originally founded by four environmental nonprofits, the organization—then the Renewable Energy Buyers Alliance (REBA)—was established to solve a fundamental problem: how could large corporations navigate the complex, fragmented, and often opaque landscape of renewable energy procurement?
- 2014–2018: The Foundational Years: Corporate procurement of renewables was in its infancy. The alliance began as a collaborative effort to develop contract structures—such as Power Purchase Agreements (PPAs)—that allowed corporations to bypass traditional utility procurement models.
- 2019: The Independence Milestone: The group separated from its founding nonprofits to become an independent organization. Michael Terrell took the chair, ushering in a period of rapid professionalization.
- 2021: A Broader Mandate: Reflecting a strategic shift toward a wider range of low-carbon technologies beyond just wind and solar, the group rebranded as the Clean Energy Buyers Alliance.
- March 2026: The Strategic Pivot: In a subtle but deliberate move, the "Clean" in its name was swapped for "Corporate," signaling a sharper, more focused alignment with the boardroom priorities of its members.
- 2027: The New Leadership Era: With the appointment of Mike Mattera, the organization is formalizing new governance policies, including strict term limits, to ensure that the board remains dynamic and representative of its rapidly expanding membership base.
Governance and the "Corporate" Identity
The move to rename the organization to the Corporate Energy Buyers Association is far from cosmetic. In the high-stakes environment of executive leadership, terminology matters.
"I think the corporate addition also helps resonate more in boardrooms, as well," explains incoming chair Mike Mattera. "It signals that this organization is highly focused not only on the energy transition but the seriousness of the operational and financial hurdles we all have ahead of us."
This change reflects a broader maturity within the industry. In the early days, "clean energy" was often viewed as a corporate social responsibility initiative—a "nice to have." Today, energy procurement is a core business strategy tied to risk management, regulatory compliance, and the ability to scale infrastructure like AI-ready data centers.
The organization’s governance has also been overhauled. By implementing term limits for its board leadership, CEBA is consciously preventing stagnation. "It’s time to give other folks a voice," noted outgoing chair Michael Terrell. "It’s a sign of organizational health that we can do that." Terrell and Threlkeld will remain on the board, ensuring that the institutional knowledge gained over the last seven years is not lost during the handover.
Supporting Data: The Scale of the Impact
The numbers tell a story of staggering growth. Since 2014, the influence of corporate energy buyers has been nothing short of transformative for the U.S. power grid.
- Cumulative Impact: Corporate buyers have influenced more than 130 gigawatts of clean energy capacity since 2014.
- Annual Velocity: In 2025 alone, corporations signed contracts for more than 27.3 gigawatts of clean energy—a record-breaking figure that underscores the accelerating pace of the transition.
- Diversity of Membership: The organization has grown from a handful of participants to a massive network of over 300 member companies. The board itself is a "who’s who" of the global economy, featuring representatives from Amazon, Cargill, ExxonMobil, GM, Google, Meta, Microsoft, Nucor, Nvidia, Walmart, and The Walt Disney Co.
This data highlights a critical shift: corporate procurement is no longer the domain of a few tech giants. While firms like Amazon, Google, Meta, and Microsoft remain the dominant players in terms of total volume, the breadth of membership now includes heavy industry, retail, and manufacturing sectors.
Official Perspectives: Navigating the AI Boom
The leadership transition comes at a precarious moment for the energy sector. We are witnessing a "blockbuster" environment for energy deals, driven by two primary forces: the impending expiration of various clean energy incentive deadlines and the insatiable power requirements of artificial intelligence.
"We all suspect that this will be another blockbuster year," Mattera said, referencing the frantic pace at which projects are being finalized.
The pressure on the grid is immense. As AI-powered data centers proliferate, the demand for reliable, 24/7, carbon-free energy is outstripping supply in many regions. This has forced companies to move beyond simple PPA structures. They are now engaging in complex discussions regarding grid modernization, battery storage, and even the role of firm, low-carbon baseload power.
Michael Terrell, reflecting on his tenure, expressed confidence in the future direction of the group. "Commitments haven’t wavered," he stated. "The companies of CEBA are still very committed to the ideals that we signed up for many years ago."
Implications: The Road Ahead
As CEBA pivots toward its new leadership, the organization faces three defining challenges that will shape its effectiveness over the coming decade:
1. The Grid Capacity Crisis
The primary hurdle for the next generation of energy buyers is no longer just the cost of renewable energy; it is the physical capacity of the grid. Interconnection queues are clogged, and aging transmission infrastructure is struggling to support the influx of new, massive energy loads from data centers. CEBA’s advocacy for grid modernization will be a key differentiator in its upcoming strategy.
2. The "Firm" Power Requirement
As corporate sustainability targets evolve from "100% renewable energy" to "24/7 carbon-free energy," the market is pivoting toward technologies that provide electricity when the sun isn’t shining and the wind isn’t blowing. The association will likely play a leading role in standardizing how these metrics are measured and reported across industries.
3. Collective Impact vs. Individual Deals
The future of the organization lies in its ability to leverage its 300+ members to influence market dynamics. By aggregating demand, CEBA members can negotiate better terms with utilities, influence policy at the state and federal levels, and catalyze the development of new transmission lines that might otherwise remain on the drawing board.
Conclusion
Under the stewardship of Mike Mattera and Emily Williams, the Corporate Energy Buyers Association is positioning itself to be the primary forum for the world’s largest companies to navigate the most complex energy transition in history. By professionalizing its governance and narrowing its focus to the core economic and operational realities of the "corporate buyer," CEBA is signaling that the era of experimentation is over.
The next phase of the energy transition will be defined by scale, speed, and grid-level integration. With a membership that spans the most influential sectors of the global economy, the association is not just observing the energy transition—it is actively engineering the market mechanisms that will power the next century of industrial growth.
