Five years after February 2021, the question isn’t whether reforms happened — it’s whether they’re enough.
February 2021 was the worst week in the history of the Texas grid. The combination of an extreme arctic event, widespread generation outages, frozen natural gas supply infrastructure, and inadequate weatherization left millions of Texans without power for days. The human and economic toll was staggering, and it set off the most significant overhaul of the Texas electricity market in a generation.
Five years on, it’s worth asking honestly: what actually changed, what’s still vulnerable, and what should every Texas business understand about the current state of winter preparedness?
What Got Fixed
- Weatherization standards became mandatory. The PUC and ERCOT adopted detailed weatherization requirements for both electric generation and natural gas supply infrastructure. Annual inspections, weather preparedness declarations, and enforceable penalties for non-compliance are now part of how the system operates.
- The natural gas supply chain got more attention. A significant portion of the Uri outages traced back to frozen wellheads, processing facilities, and gas compression infrastructure that left power plants without fuel. Coordination between the gas and electric sectors has improved substantially, though it remains an ongoing area of focus.
- ERCOT’s operational posture changed. The grid operator now operates more conservatively — committing more reserves earlier, holding more capacity in reserve during high-risk periods, and being faster to issue advisories. The introduction of ECRS as a new ancillary service product is part of that shift.
- Communications and public awareness improved. TXANS (Texas Advisory and Notification System) was created to deliver clearer, more reliable information to the public and market participants about grid conditions.
- The PUC and ERCOT got new statutory authority. Subsequent legislative sessions gave both agencies new tools — including SB 6 — to plan, regulate, and respond to grid stress events.
What’s Still Vulnerable
- Extreme cold remains the highest-risk weather scenario. Hot summers stress the grid, but they’re predictable — the load curve is well-understood, and battery storage and solar match much of the demand shape. Extreme cold is harder. Heating load can spike dramatically, fuel supply is more brittle, solar contribution is minimal, and wind output during cold snaps can be unreliable.
- The South Texas IROL constraint persists. A specific transmission constraint in South Texas continues to require operational mitigations to avoid the risk of firm load shed under unlikely conditions.
- Load growth is outpacing generation additions. The gap between new generation coming online and new load connecting is the central reliability story for the next several years. Even with everything that’s been done, the system has less margin than it had pre-2021 in absolute reserve terms.
- The retail market structure remains complicated. During Uri, some indexed-price customers received bills in the tens of thousands of dollars for a single week of power. Reforms have addressed some of those structural issues, but customers on certain pass-through products can still see extreme exposure during emergency events.
What Every Texas Business Should Do Before Winter
Five practical steps that take a few hours and can prevent six-figure surprises:
- Read your contract specifically for emergency-event provisions. Look for any language about pass-through of imbalance charges, ancillary service costs during emergency conditions, or capacity scarcity adders. Know what your worst-case monthly bill could look like.
- Verify your facility’s winter readiness. Heat tracing on critical pipes, back-up power for critical processes, freeze protection for water systems. None of this is sexy, but the cost of doing it is trivial compared to the cost of an outage.
- Sign up for TXANS alerts. Free, immediate, accurate. There is no reason a Texas business shouldn’t have these notifications going to their operations team.
- Have an operational playbook. What does your business do when ERCOT issues an Energy Emergency Alert? When rolling outages are called? When the grid restores? Walk through it once before you need it.
- Talk to your retail provider before October. Confirm what your hedging looks like for the winter, what kind of price exposure you’d have during an emergency event, and whether there are contract amendments worth considering before the cold season arrives.
The grid is meaningfully more prepared than it was in February 2021. It is not invincible. The businesses that handle the next severe winter best are the ones that prepared for it before the forecast came out.
Take the Next Step
Want a winter readiness review for your contract and operations? Amerigy Energy can walk through your exposure and help you make the changes that actually matter before the next cold snap. Reach out to get on the calendar before fall.