Winter Storm Generator Prep in Texas
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The 2021 Freeze Changed How Texans Think About Backup Power
Before February 2021, most Greater Houston Area homeowners did not think of winter as an outage risk. Hurricanes, sure. Thunderstorms, sure. But freezing weather? Then the 2021 freeze hit. ERCOT shed load. Millions of Texans lost power for days in sub-freezing temperatures. Pipes froze, homes were damaged, and over 200 people lost their lives statewide. It was a wake-up call about just how vulnerable our grid actually is.
ARK Generators has been helping Greater Houston Area homeowners prepare for winter events ever since. This page covers what we have learned, and what you should know before the next cold front lines up over the Panhandle.
Why the Texas Grid Is Still Vulnerable
The Texas power grid (ERCOT) is under growing strain. Several factors make winter outages more likely now than they were a decade ago:
- Population growth - Houston, Dallas, Austin, and San Antonio keep adding people (and houses) faster than the grid can keep up
- Data center expansion - Large AI and cloud computing build-outs are drawing enormous amounts of power from existing transmission lines
- Limited new transmission - Very few new substations or major transmission projects are coming online to relieve the strain
- Aging generation assets - Some natural gas and coal plants are approaching the end of their service lives
- Winterization gaps - Despite post-2021 requirements, many facilities still struggle in prolonged freezes
In plain terms: the margin for error on Texas winter power is smaller every year. The 2021 freeze was not a one-off.
What a Winter-Ready Generator Setup Looks Like
Cold-Start Reliability
Whole-home standby generators from Generac and Kohler include cold-weather kits (block heaters, battery warmers, oil heaters) that ensure the unit will actually start when it is 20 degrees outside. If your generator is older, make sure the cold-weather kit is installed and functional.
Natural Gas vs. Propane in a Freeze
Natural gas is usually preferred for standby generators in Texas - but in a statewide freeze, gas pressure at residential meters can drop as demand spikes. Propane tanks are unaffected by that risk but have to be topped off ahead of time. During a planning visit we talk through which fuel makes more sense for your specific location.
Freeze-Critical Circuits
When the grid goes down in a freeze, your generator needs to keep at minimum: heat (furnace or heat pump), water pipes (pump, recirculation, pipe heat tape), refrigeration, cooking, and basic lighting. Our load calculation pages covers how to prioritize those during a planning visit.
Pre-Winter Maintenance Checklist
Every October, ARK recommends the following for existing generator owners:
- Full seasonal service visit (oil, filters, plugs, battery, full diagnostic)
- Cold-weather kit inspection and function test
- Fuel supply verification (propane top-off or natural gas meter check)
- Transfer switch test under real load
- Remote monitoring (MobileLink or equivalent) verification
- Walk-around inspection for enclosure damage, pest intrusion, or corrosion
Schedule your pre-winter service on our service and maintenance page.
Do Not Wait for the Next Statewide Event
After 2021, generator demand in the Houston area spiked for months and lead times stretched to 3 months or more. If you want to be ready for next February, now is a good time to call. ARK's office is at 1925 Longmire Rd. in Conroe, TX 77304. Reach us at (936) 441-4ARK or request a free consultation online. See also our hurricane preparedness page for the other half of the year.