You know the old adage: "If you don't like the weather here, wait five minutes." Texas weather is not just unpredictable; it can be downright bipolar. I don't need to remind you of the knockout punch Old Man Winter delivered last February, even to parts of the state where hard freezes are few and a "snow event" usually amounts to a dusting. It will be a long time before Texans forget spending a week without power in single-digit temperatures — huddled together in their homes under mountains of blankets — with no heat, no way to bathe or cook, and no escape.

The massive power outages of Valentine's Day week spurred public outrage and a full-throated demand that state leaders take decisive steps to make Texas' electric grid sustainable. The legislature was only a month into its 140-day regular session at the time, but still failed to do anything substantial to fix the grid before adjourning May 31.

Now — well ahead of the hottest days of summer — Texans are wondering why the Electric Reliability Council of Texas (ERCOT) is already asking them to set their thermostats at 78 degrees, turn off lights, avoid using their ovens or doing laundry in the evenings, and otherwise conserve energy. It was ERCOT's second such call since April. Some local energy companies have recommended setting thermostats even higher, and local rolling blackouts have continued in Dallas, Houston, and elsewhere in the state throughout the months of June and July. That may be fine for some people during Texas' scorching summer heat, but for others, it is untenable. For the elderly or infirmed, it could be deadly.

Experts have warned the grid is unreliable, the system is strained, and homeowners and businesses hover at near-constant risk for blackouts, unless the state does more to weatherize the grid, bring more generators back online, and provide more emergency backup power. Meanwhile, when temperatures hit triple digits and stay there for days, the blackout risks will skyrocket.

But there is one obvious solution to grid instability that will enable Texans to keep their homes and businesses comfortably cool during the hot summer months ahead, without setting their thermostats higher or timing their activities to government guidelines. Widespread distributed generation of solar energy, instead of the current emphasis on remotely located utility-scale solar, would provide a highly effective, long-term solution to decreasing strain on the ERCOT power grid.

That means dramatically increasing the number of solar installations on residential and commercial properties statewide. Consider the distance and infrastructure required to bring power from a West Texas solar farm to the state's big cities. That's not only a costly undertaking, it exposes the system to many vulnerabilities along the way. It makes more sense to install solar panels on-site, behind the meter, and pair them with storage for backup power.

The logic is simple: Increasing the number of homes and businesses with on-site solar power would decrease the burden on the grid and help insulate it against failure. Further, by installing home batteries such as the Tesla Powerwall for backup power, residents can control their own power supply and ensure its reliability, even during extreme weather events—summer or winter.

These technologies are cost-efficient and readily available today. A few months ago, Congress extended the 26 percent federal solar investment tax credit (ITC) — which also applies to batteries paired with solar — through 2021 (dropping to 22 percent in 2022), making the move to solar and backup power even more sensible.

State leaders have tried to lay the blame for last winter's power outages on renewable energy. But failures of natural gas power plants, not renewable generators, caused the grid failures that led to those deadly blackouts.

On July 6, months after declaring "everything that needed to be done was done to fix the power grid in Texas," Governor Abbott ordered the PUC to take steps to overhaul the state's electric system. But the solutions he's offering—like constructing new coal, gas, and nuclear power plants and building their transmission lines faster—are giveaways to the fossil fuel industry and will take a long time to complete. Texas needs reliable power NOW.

Meanwhile, state officials are increasingly emphasizing conserving power during extreme temperatures, which suggests they don't even believe their assurances that no more blackouts lie ahead. On-site solar power is the obvious solution, both today and for the long-term health of our rapidly growing state and rapidly warming planet.

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Bret Biggart is CEO of Austin-based Freedom Solar, the leading turnkey solar energy installer in Texas, providing high-quality, cost-effective, reliable solar solutions for the residential and commercial markets.