Overview
As wind energy scales across modern power grids, wind farm owners face two main risks: unpredictable wind speed due to changing weather patterns and falling electricity prices. Since wind power costs almost nothing in marginal operating expenses, shifts in weather patterns drive how much power turbines generate and wholesale prices on the grid. Stacking ERCOT Wind Index futures with ERCOT Power futures creates a complete cross-asset hedge that transforms weather and pricing uncertainty into locked-in benchmark revenue.
Case study: A renewable power producer in West Texas projects May wind generation of 95,000 MWh (95 GWh). They seek to secure a benchmark revenue target of $6,650,000 based on an expected wholesale price of $70.00/MWh.
To insulate cash flows against both low wind resource density and falling power market clearing prices, the producer enters a two-legged financial hedge:
Leg 1 (volumetric hedge): Short 350[1] May ERCOT Wind Power Index contracts (product code WPE) at 9,500 points ($9,500 per contract value).
Leg 2 (price risk hedge): Short ERCOT West 345KV Real-Time Peak Monthly 1 MW futures (product code WTP) covering 95,000 MWh at a fixed rate of $70.00/MWh
During May, a persistent high-pressure system sweeps across Central Texas, reducing regional hub-height wind speeds impacting power production. Physical generation falls to 78,000 MWh (17 GWh atmospheric deficit). Simultaneously, mild shoulder-season temperatures depress cooling demand across major metropolitan load centers, lowering wholesale real-time locational marginal prices (LMPs) to $35.00/MWh.
|
Portfolio component |
Benchmark / target |
Realized market level |
Realized cash flow |
|---|---|---|---|
|
Physical spot revenue |
95,000 MWh @ $70.00/MWh |
78,000 MWh @ $35.00/MWh |
$2,730,000 |
|
Wind Index futures (volume) |
95 GWh index points |
78 GWh index points |
+$595,000 |
|
Power futures (price) |
$70.00/MWh |
$35.00/MWh real-time LMP |
+$3,325,000 |
|
Total net-realized portfolio |
$6,650,000 expected |
Fully hedged revenue |
$6,650,000 |
Physical spot revenue: 78,000 MWh generated X $35.00/MWh = $2,730,000
Wind index hedge gain: ($9,500 - $7,800) X 350 contracts = $595,000 cash gain
Power futures hedge gain: $95,000 x ($70 - $35) MWh = $3,325,000
Combining Weather Index derivatives and Power Price futures provides an effective dual-leg hedge against both volume and price risks. By mitigating atmospheric variability and regional market shifts, this strategy secures predictable cash flows, supporting capital optimization and asset valuation.
To access detailed contract specs and market resources, visit:
https://www.cmegroup.com/markets/weather/wind
Resources
[1] Assume the trader uses meteorological forecast models to project that a shoulder season wind drought will clear real time power at $35/MWh. Because each wind futures contract provides $0.10 of payout per MWh of generation shortfall, dividing the forecast $35/MWh rate by the $0.10 contract sensitivity dictates exactly 350 contracts ($35 / 0.10$)
All examples in this report are hypothetical interpretations of situations and are used for explanation purposes only. The views in this report reflect solely those of the author and not necessarily those of CME Group or its affiliated institutions. This report and the information herein should not be considered legal advice, investment advice or the results of actual market experience. Where regulatory matters are summarized, they represent CME Group’s good faith understanding of the applicable requirements.
