ºÃÉ«ÏÈÉúTV

ERCOT offers a distinctive institutional setting for examining how an energy-only electricity market coordinates reliability in real time. With limited forward capacity constructs and increasing penetration of variable generation and battery storage, system reliability depends critically on scarcity pricing mechanisms, ancillary service procurement, and operational flexibility at the margin.

This seminar synthesizes findings from two recent papers. The first, A Day in the Life of ERCOT, reconstructs selected high-volatility operating intervals to analyze the interaction between net load variability, dispatchable generation, storage response, and price formation. Using hourly and sub-hourly system conditions, it evaluates how reliability is achieved operationally -- particularly during periods when reserve margins tighten and scarcity adders are activated.

The second, Rethinking Ancillary Services, examines the evolution of ERCOT’s ancillary service products, including the introduction of ECRS and expanded reserve procurement. It evaluates how layered reliability products interact with energy prices, influence resource revenue stacking, and potentially alter investment and dispatch incentives within an energy-only framework. The analysis considers whether recent procurement levels reflect risk-averse operational adaptation or structural changes in system needs.

Taken together, the discussion explores broader questions relevant to market design and power system economics:

• How effectively do real-time scarcity mechanisms internalize reliability risk?
• What are the incentive effects of expanding ancillary service procurement in energy-only markets?
• Under increasing load growth and variability, how should the boundary between operational prudence and market distortion be evaluated?

Dr. Dean Foreman is Chief Economist for the Texas Oil & Gas Association and a nationally recognized expert on energy economics, market design, and infrastructure strategy. With more than two decades of experience across global energy markets, corporate planning, and regulatory policy, his work spans the full energy value chain—from upstream production and natural gas monetization to LNG exports, refining, power markets, and grid reliability.

Previously, Dr. Foreman held senior economic and strategic roles at ExxonMobil, Talisman Energy, Saudi Aramco, and the American Petroleum Institute, where his analysis informed multi-billion-dollar investment decisions, competitive positioning, and national policy debates. His work is frequently used to evaluate trade-offs among capital allocation, infrastructure constraints, market incentives, and long-run energy security.

Dr. Foreman serves as a trusted advisor to policymakers, executives, and market participants on issues ranging from electricity reliability and wholesale market structure to energy trade, geopolitics, and industrial competitiveness. He is a LinkedIn Top Voice in Energy & Economics and served as 2025 President of the U.S. Association for Energy Economics. His commentary and testimony are widely cited by industry, media, and government, particularly on the economic implications of energy policy for Texas, the U.S., and global markets.