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You are right Texas also doesn’t require a fixed percentage of spinning reserves like the East or Western interconnects do so their is nothing backing up wind or solar by mandate only profit based gas turbines and those operators have zero incentive to keep spinning reserves when they only get paid for kWh they sell not as in the other zones where they get paid to spin in reserve. A one or two cents per kWh tarrif on power sold would fund having gas turbines spinning at low power standby ready to ramp up in seconds to full power already synced with reactive power and phase angles to the grid. I am a power professional and see the live real time ercot market day in and day out. Only gas turbines or large stationary diesels which can also be fueled on gas can ramp up in seconds to tens of minutes to cover short falls in demand when wind or solar drops off. Batteries can as well but the cost per kWh is not anywhere close to economical on the grid scale. I am demoing Tesla power walls at my large home they can go from zero to 20,000 watts in 500 milliseconds in phase and freq to the grid or go stands alone mode and run my home for days at a time when the sun sets I also have 15,000 watts dual axis trackers in panels upgraded recently from single axis trackers. My panels have been putting out full power since 7 am this morning and will do so till 815 tonight when the sun sets over the trees to the south. I personally could careless if the grid goes down my home is fully off grid with the click of a button on my inverter app to auto trip the grid breakers on the main 240v ties. I also have a generac 12,000 watt unit tied to both the gas grid and the original 500 gal propane tank before atmos came down the street with pipeline gas.