Solar

Elon Musk Says Solar Will Crush Other Energy Sources — What Texas Data Actually Shows

Musk says solar goes exponential until other sources are <<0.1%. ERCOT data: solar past nuclear, capacity boom, batteries firming evenings. What that means for Australian rooftop + home battery independence.

Luke CoveLightning Energy18 September 2026 · 6 min read

Texas — Here's what just lit up the energy feed. Elon Musk doubled down on solar on X, writing that the solar power exponential will continue until all other energy sources are <<0.1%, after venture capitalist Chamath Palihapitiya flagged accelerating deployment. Reacting to a Texas chart showing solar’s climb past nuclear, Musk added: "Solar is so obviously the future."

Did you know the Texas numbers back a real boom — without proving Musk’s 99.9%-plus endgame? ERCOT data shows solar already past nuclear on share, capacity up by orders of magnitude, and batteries stacking into evening firming. The homeowner stake is simpler: a grid solar boom is not an automatic bill win at your meter.

Invest in your independence where the meter still answers to you. Stake your claim on rooftop solar plus a compliant home battery — while Texas argues gigawatts.

Source: Benzinga via Yahoo Finance, 17 Sep 2026 UTC / 18 Sep Melb (https://finance.yahoo.com/energy/articles/elon-musk-predicts-solar-crush-220019461.html).

## What Musk actually said — and what the chart was showing

Per Benzinga via Yahoo, Musk’s posts landed after Chamath highlighted accelerating solar. The claim is blunt: keep the exponential going until every other source is far below one-tenth of one percent.

Separately, Musk reacted to a chart of solar rising past nuclear generation in Texas with the line that solar is so obviously the future.

That is a thesis, not a forecast model. The article is clear that ERCOT’s published mix does not project anything close to Musk’s 99.9%-plus scenario. What the data does show is a steep, measurable climb — worth reading without the hype filter.

Short heat: Musk bets solar crushes everything. Texas shows solar already beating nuclear on share — and still climbing.

## What Texas data actually shows (ERCOT + EIA)

ERCOT solar past nuclear capacity climb batteries firm evenings
ERCOT solar past nuclear; capacity climb and batteries firm evenings
Homeowner takeaway rooftop plus home battery evening independence Australia
Homeowner takeaway: rooftop solar plus a compliant home battery for evening independence

ERCOT generation mix (2024), per the Yahoo/Benzinga roundup: Wind — 24.2%; Solar — 10.4%; Nuclear — 8.4%. Solar overtook nuclear on annual share. Wind remains the larger renewable slice.

Installed solar capacity (ERCOT): 698 MW in 2016; 37,443 MW in 2025. That is the capacity climb behind the “obvious future” chart — not a vibe.

EIA on ERCOT solar share and output: Solar’s share of ERCOT generation rose from 4% in 2021 to 12% in 2025. In the first nine months of 2025, utility-scale solar generated 45 TWh, up 50% year over year. Wind plus solar together met 36% of grid demand in that window.

EIA May forecast — the coal crossover: utility-scale solar in ERCOT projected at 78 billion kWh in 2026; coal projected at 60 billion kWh. This is the first time solar tops coal on an annual basis in ERCOT.

Natural gas remains the largest ERCOT source in the broader picture — the boom is real; “everything else at <<0.1%” is still Musk’s horizon, not today’s meter.

## Batteries, prices, and the buildout Musk is funding

Solar without storage is midday power. The Yahoo/Benzinga piece ties evening firming to batteries.

Per Reuters (cited as July last year in the roundup): ERCOT added nearly 5 GW of storage across summer 2024 through July 2025. Texas wholesale/retail price context in that reporting window: electricity prices roughly 24% below the US average then. Treat that as a timed Reuters snapshot — not a permanent discount promise for every bill.

On the corporate side, as facts reported: Tesla is considering a $10.1 billion vertically integrated solar-cell plant in Fort Bend County, Texas. Musk said Tesla and SpaceX are each pushing toward 100 GW per year of solar-production capacity. He acknowledged natural gas will still be needed to supplement and bootstrap solar for a period. None of that ships a wall unit to an Australian garage. It does show where capital and factories are pointing: more panels, more cells, more firming kit on grids that can take them.

## What this changes — and does not — at an Australian meter

A Texas capacity chart will not automatically cut your dinner peak. Retail tariffs, export limits, and your evening load still decide the statement.

Grid solar boom does not equal automatic bill win. Utility farms and rooftop systems are different jobs. ERCOT’s share climb is grid physics and wholesale mix. Your independence still starts on the roof and in the garage.

What a Texas-style solar plus storage story does reinforce for Australian homeowners: midday solar is cheap to generate; evening power is still the expensive problem. Batteries firm the hours after sunset — on the grid and at the meter. Big builds such as NSW’s Waratah Super Battery and SA’s Reeves Plains module stack absorb wholesale stress; they do not replace a compliant home battery for your circuits.

What you can still own: roof solar sized to your load and export limits; a compliant home battery matched to evening and overnight circuits; an electrification sequence that does not amplify the dinner rush; and docs and monitoring so the next price spike is data, not panic.

Federal Cheaper Home Batteries support can take around / up to ~30% off eligible home battery systems when you qualify. Eligibility depends on property and current rules. Never invent dollar savings off a Musk tweet or a Texas chart.

## Stake your claim where the gigawatts won’t

Musk’s line is clear: solar’s exponential until everything else is <<0.1%, and Texas makes the future “obvious.” The published ERCOT and EIA numbers make a different, tighter case — solar past nuclear on 2024 share, capacity from 698 MW to 37,443 MW, utility solar on track to top coal annually in 2026, batteries stacking into evenings, and factories chasing cell-scale ambition.

Your independence still starts at the meter. If Texas headlines have you staring at a residential quote, bring the scope line by line — modules, inverter, battery, network rules — and size for the dinner peak you actually live. Own your evening power. The chart will keep climbing either way.

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