forward power curve

A projection of electricity prices for delivery at future dates, based on current market trading.

A forward power curve represents the market price of electricity contracts for delivery at various points in the future. Because electricity cannot be easily stored in large quantities, its pricing is highly sensitive to the exact timing and location of delivery. The curve is constructed by aggregating bids, offers, and transaction data from wholesale electricity futures, over-the-counter (OTC) clearinghouses, and regional transmission organizations. Investors and analysts monitor forward power curves to gauge the future revenue potential and financial health of merchant power generators and utilities. A rising forward curve suggests tightening supply, rising fuel costs (such as natural gas), or growing demand, which can boost future earnings for power producers. Conversely, a declining curve indicates expected oversupply, falling fuel costs, or weakening demand, which can squeeze margins. When analyzing these curves, investors must be aware of liquidity constraints. While contracts for the upcoming months or quarters are heavily traded and highly reliable, contracts extending several years into the future are often thinly traded. These longer-dated points on the curve may reflect wide bid-ask spreads or model-based estimates rather than actual transaction prices, making them less reliable for long-term forecasting.

An analyst evaluates a merchant power generator's outlook in the ERCOT region. Last month, August contracts for the next year traded at $50/MWh. This month, due to rising natural gas futures, the forward power curve shows August contracts trading at $60/MWh. For a generator selling 100,000 MWh of forward capacity, the implied revenue for that month increases from $5,000,000 ($50 100,000) to $6,000,000 ($60 100,000), a $1,000,000 upward shift in expected revenue.