What it is: Natural gas prices represent the cost of the primary fuel used for many power plants. Gas price movement directly influences electricity generation costs and wholesale power prices.
Why it matters: Electric generators dispatch gas-fired units depending on fuel costs. Sustained high gas prices can drive up power prices, shift generation to coal or renewables, and compress spark spreads. Low gas prices often lead to cheaper power but may signal oversupply conditions.
How to read the signal:
- Green – Stable & Low: Henry Hub prices are steady or trending lower; gas supply is ample relative to demand. Indicates benign fuel costs and favourable conditions for power buyers.
- Yellow – Rising: Gas prices are moving higher due to seasonal demand or supply constraints. Watch for potential power price impacts; hedging may be prudent.
- Red – High & Volatile: Gas prices are elevated or spiking due to severe weather, supply disruptions, or geopolitical events. Signals high risk for power price spikes and potential need for mitigation.
Sources: Henry Hub spot and futures price data (e.g., EIA, CME), industry reports on gas fundamentals, ISO fuel cost indices.
