MISO has become a majority summer capacity market, with summer's share of annual revenue rising from 38% to 85% in three years
Seasonal contribution to annualized PRA clearing price, MISO N/C
Summer
Fall
Winter
Spring
Source: MISO 2026 Planning Resource Auction Results Posting (April 2026), Modo Energy
Each segment is the season's clearing price weighted by season length (Summer 92, Fall 91, Winter 90, Spring 92 days).
MODOENERGY