Offer Caps in Markets Operated by Regional Transmission Organizations and Independent System Operators

The Federal Energy Regulatory Commission is revising its regulations to address incremental energy offer caps. We require that each regional transmission organization (RTO) and independent system operator (ISO): Cap each resource's incremental energy offer at the higher of $1,000/megawatt-hour (MWh) or that resource's verified cost- based incremental energy offer; and cap verified cost-based incremental energy offers at $2,000/MWh when calculating locational marginal prices (LMP). Further, we clarify that the verification process for cost-based incremental offers above $1,000/MWh should ensure that a resource's cost-based incremental energy offer reasonably reflects that resource's actual or expected costs. This Final Rule will improve price formation by reducing the likelihood that offer caps will suppress LMPs below the marginal cost of production, while compensating resources for the costs they incur to serve load, by enabling RTOs/ISOs to dispatch the most efficient set of resources when short-run marginal costs exceed $1,000/ MWh, by encouraging resources to offer supply to the market when it is most needed, and by reducing the potential for seams issues.