As 2026 approaches, the U.S. energy sector is experiencing a defining contradiction: natural gas prices remain near multi-year lows, yet electricity prices have been rising across many ISOs. This widening disconnect signals a market driven less by fuel fundamentals and more by demand expectations, grid constraints, and structural load growth.
In previous cycles, low natural gas prices translated directly into low electricity prices. Today, that relationship has broken down. Power markets are now pricing in the expectation of significantly higher future demand, driven by data center expansion, electrification, and climate-driven load changes. As a result, electricity prices are rising even while the marginal fuel remains relatively cheap.
This shift creates a new risk dynamic: if natural gas prices rebound from current lows, power prices, already elevated, could become substantially worse.
Natural gas prices remain near some of the lowest inflation-adjusted levels of the past decade due to ample production, efficient shale output, and high storage levels. Given that gas-fired generation units set the marginal price of electricity in most competitive markets, this should normally translate into lower power costs.
But that isn’t happening.
Across ISOs such as PJM, ERCOT, MISO, NYISO, and NE-ISO, forward power prices have climbed steadily. Day-ahead and real-time prices are also showing more volatility. Despite low gas prices, the market increasingly reflects long-term structural demand growth rather than short-term fuel savings.
This represents a significant break from historical pricing behavior.
Electricity demand is entering a period of sustained acceleration. The primary drivers of this shift fall into two major categories.
Data centers are the single most important factor pushing electricity prices upward. Unlike traditional load, data center power consumption is:
- Constant (24/7)
- Non-cyclical
- Likely to grow in the near-term
- Highly concentrated geographically
Many regions are looking at multi-gigawatt data centers in their development pipelines. Even before new facilities are built, their expected consumption is reshaping forward markets and driving higher price expectations.
Electric vehicles, industrial heat pumps, and electrified manufacturing processes are steadily increasing baseline electricity demand. As electrification spreads across more sectors, total grid consumption is rising even in areas where per-capita usage is flat.
The Core Risk: When Gas Rebounds, Power Prices Will Likely Get Worse
The most concerning aspect of the current energy landscape is the gap between relatively low natural gas prices and high electricity prices. Power prices are elevated because of demand expectations, not fuel pressure. This means:
Any rebound in natural gas prices will push electricity prices even higher.
Historically, rising gas prices were the main cause of rising power prices. Now, electricity prices are climbing without gas price pressure. If fuel costs move off their current floor:
- Wholesale electricity prices could jump sharply
- Capacity markets could tighten further
- Basis volatility could increase
- Forward curves could steepen dramatically
This risk is magnified by the fact that many ISOs are entering 2026 with tightening reserve margins and long interconnection queues limiting new generation.
Winter 2025/2026: The Biggest Short-Term Risk
The winter of 2025/2026 represents the most significant short-term risk to both natural gas and electricity markets.
Following several mild winters, gas storage is healthy. But a colder-than-normal winter would rapidly change the picture. A severe cold season would:
- Drive up natural gas heating demand
- Reduce storage quickly
- Push natural gas prices sharply higher
- Cause electricity prices to spike, especially in gas-dependent ISOs
Because power prices are already elevated, a cold winter could amplify volatility across the entire first half of 2026.
In this sense, mild weather is currently masking the underlying fragility of the gas–power price relationship.
Based on current conditions and forward expectations, the 2026 outlook features:
- Low natural gas prices, likely temporary
- Rising electricity prices driven by future demand growth
- Tightening capacity and transmission constraints
- Increased reliance on gas-fired peaking units
- Heightened sensitivity to winter weather and gas price shifts
- Growing regional price divergence driven by data center siting
The central theme is clear: electricity markets are stressed even under ideal fuel-cost conditions.
Implications for Businesses
- Expect elevated and potentially volatile electricity prices
- Consider long-term procurement strategies that hedge both demand and fuel risk
- Investigate opportunities to curtail/reduce usage during periods of peak demand
The 2026 energy landscape is defined by a structural mismatch: natural gas is cheap, but electricity is not. Power prices are rising due to fast-growing demand from data centers, and electrification. Because electricity prices are already elevated, any rebound in natural gas prices, or a colder-than-expected winter, could push them even higher.
This new dynamic requires a more vigilant approach to procurement, planning, and infrastructure investment. The era of low gas automatically ensuring low electricity prices has likely come to an end.