A Piece of Glass Thinner Than a Credit Card Could Solve America’s $25 Billion Energy Problem

Here’s one more thing we owe to the restless mind of Steve Jobs : hyper-efficient, ultra-tough windows for homes.

This new kind of window could save American households billions of dollars in wasted energy each year, while allowing expansive views of the outdoors and making our homes quieter, more comfortable and able to survive even the most violent weather. The key enabling technology is thin panes of glass—sandwiched between thicker standard glass—which exist because of the same manufacturing and chemistry breakthroughs that made possible the light, strong, scratch-resistant screens on our smartphones, tablets and watches.

Typical double-pane windows have hardly changed since their invention a century ago. Filling them with inert gases or adding coatings to reflect or let in heat has made them more effective. But it’s still generally accepted that, all other things being equal, your home’s energy bills will go up or down based on how many windows you have, and how big they are.

“Windows are always viewed as the problem, because windows typically lose 10 to 20 times more energy per square foot than a well-insulated wall,” says Stephen Selkowitz, an affiliate at the Lawrence Berkeley National Laboratory and a dean in the field of building energy efficiency. The Energy Department estimates that U.S. households each waste $200 to $400 a year on energy bills due to drafts, leaks and inefficiencies, for a total of at least $25 billion a year.

These new three- and four-pane windows can be even better insulators than the walls around them, but cost only about 20% more than standard energy-efficient windows. Installing them could bring big energy savings for those ready to retrofit, and could enable the construction of new homes that are so well-insulated that even when the power goes out in a winter storm, they stay warm for days. Another variant of these windows can meet the most stringent hurricane-related building codes in the country, while being significantly lighter than conventional stormproof windows.

The bad news is that Joe and Jane Consumer won’t be able to buy these kinds of windows at the local home-supply store—at least not yet. While the primary manufacturer of this type of window is offering its tech to other window makers, it’s only opened up U.S. production in the past few months, and it’s still scaling up manufacturing.

Bringing the panes

Scientists have long known the key to more efficient windows is similar to the relationship between razorblades and a closer shave: More is better. But it was hard to translate that into a product that could be mass manufactured, at a price that people would be willing to pay, says Selkowitz.

Enter Corning , maker of the thin, tough Gorilla Glass that has helped make possible today’s mobile devices. In order to win over Steve Jobs and land Apple as a client when it first started making iPhones, Corning offered Apple a fresh twist on its existing process for making glass for LCD displays and other applications, which yielded a new kind of chemically strengthened glass.

Traditional glass, called soda-lime glass, is made by floating molten glass on top of molten tin, which is a cheap and effective process but leaves microscopic flaws. With Gorilla Glass, molten glass with different additives than soda-lime glass cascades in a waterfall as thin as half a millimeter, which rapidly cools and is cut to size, yielding glass that is nearly flawless. The glass is also chemically strengthened, making it resistant to scratches and chipping.

As the smartphone industry ramped up, Corning built more factories to meet demand for Gorilla Glass. Some of these factories now use the same process, with a slightly modified chemistry, to create far larger sheets of similarly tough glass, for windows instead of hand-held devices. These sheets of glass are thinner than a credit card, yet they can be bigger than a queen-size mattress, says Ron Verkleeren , senior vice president of Corning’s emerging-innovations group.

This architectural glass doesn’t yet have a compelling name like Gorilla Glass, but they’re working on it, he adds. (“Orangutan Glass” has my vote.)

When three or even four layers of glass are put together, with inert gas in between, only the interior panes are the super-thin Corning panes, and they add little weight to the finished product.

When you go from a single air gap to the two or three that are possible with triple- and quad-pane windows, the insulating ability of a window can skyrocket, says Selkowitz, who has collaborated at the federally funded Lawrence Berkeley lab with Alpen, a Colorado-based maker of specialty windows, to research their capabilities.

Efficiency and more

Alpen’s windows have long been favored by architects who want to build super energy-efficient homes. Corning began collaborating with Alpen about five years ago, and now the company is ready to mass-manufacture reinforced windows at two facilities, one in Colorado and one in Pennsylvania. The first wave will be windows in standard sizes, says Andrew Zech, Alpen’s CEO. Key to keeping costs down are the company’s new automated, high-throughput assembly lines for making the windows, he adds.

David Schleicher, managing director of Kala, a high-performance builder in Kansas City, Mo., has been living with a wall of triple-pane windows comparable to Alpen’s on the south side of his home since 2015. Typically, such a vast expanse of glass—a total of 16 feet by 7—would create an unpleasantly cold patch during the winter. But this glass is so well insulated, it actually creates warmth in his living room: It admits the radiant heat of the low winter sun but prevents conductive heat loss through the window, says Schleicher.

“With the right glass in my house, my heat won’t even be running on a winter day, as long as the sun is shining and it’s coming in the window,” he says. “It is crazy—I will be in shorts and a T-shirt and it’s 20 degrees outside. Meanwhile, my neighbors are paying out the nose in heating and cooling bills.”

Whether or not these innovative new windows take off depends largely on the demand from builders, homeowners and landlords.

Historically, the biggest reason that energy-efficient technologies get adopted is that building codes require them, says Schleicher. Without explicit regulations that enforce minimum standards, builders often seek deals on materials so that they can maximize profits, and businesses and individuals who rent out properties often have little incentive to reduce tenants’ month-to-month energy bills.

Slashing home energy bills is just the next chapter for the tech that brought us smartphone glass.

Miter Brands is producing windows in North Venice, Fla. in which it layers Corning’s tough glass onto windows designed to withstand hurricane-force winds. Previously, the company’s impact-resistant glass doors weighed up to 600 pounds; using Corning thin glass inside has cut the weight by up to 40%, says Dean Ruark, vice president of engineering and innovation at Miter subsidiary PGT Innovations.

Despite being lighter, these new doors can pass the most stringent hurricane testing in the country: Miami Dade’s building codes for hurricane resistance. This involves withstanding air pressure equivalent to a major hurricane, and a two-by-four fired from a cannon at 34 miles an hour…twice.

Reporting season has once again reminded investors that a strong profit does not guarantee a rising share price, and a large loss does not always trigger a sell-off. What matters most is how each result compares with expectations and, increasingly, what management says about the year ahead. During the August 2026 season, companies offering credible turnarounds or unexpectedly strong guidance were rewarded handsomely, while those flagging weaker margins, slowing demand or greater uncertainty were punished.

The following ranking draws on Morningstar’s review of 164 ASX-listed companies and measures each company’s share-price movement on the day it reported. This captures the market’s immediate response to the earnings announcement, before subsequent economic developments, dividends and company-specific news cloud the picture. Here are the five biggest winners, and the five hardest-hit losers, of the season so far.

The five winners

1. Bapcor (ASX:BAP): +41.0%

Bapcor delivered reporting season’s largest relief rally after presenting early evidence that its troubled automotive-parts business was stabilising. Although underlying revenue fell 1.8% to $1.92 billion and underlying NPAT collapsed 85% to $10.8 million, underlying EBITDA of $152.5 million exceeded guidance.

More importantly, working-capital initiatives released $68.5 million in the second half, lifting cash conversion to 109.4% and reducing net debt by 63% to $135 million. The statutory loss was $431.6 million, largely because of non-cash impairments. Investors focused on improving operational momentum, stronger liquidity and management’s expectation of modest FY27 revenue growth.

2. Zip Co (ASX:ZIP): +18.2%

Zip comfortably surpassed its FY26 targets, sending the buy-now-pay-later provider’s shares sharply higher. Transaction volume rose 23% to $16.7 billion, while cash earnings before tax, depreciation and amortisation jumped 58% to a record $268.9 million. Statutory profit climbed 46% to $116.4 million, and the cash operating margin expanded by 4.2 percentage points to 20%.

The strongest signal was guidance for FY27 cash earnings of $340 million—around 26% growth and above analysts’ forecasts. US transaction volume increased 42.5% and now represents three-quarters of group volume, offsetting weaker customer activity in Australia.

3. CSL (ASX:CSL): +17.3%

CSL’s result was hardly spectacular in isolation, but it cleared a market bar that had fallen dramatically following earlier downgrades and restructuring announcements. Underlying NPATA was US$3.1 billion, down 2% in constant-currency terms, while operating cash flow reached US$3.51 billion.

CSL maintained its full-year dividend at US$2.92 per share and completed a A$1 billion buyback. The real catalyst was FY27 guidance for approximately 5% underlying profit growth, compared with market expectations closer to 2%. After an extended period of earnings disappointments, investors interpreted the outlook as evidence that CSL’s core plasma business was approaching a sustainable recovery.

4. Judo Capital (ASX:JDO): +16.9%

Judo Capital demonstrated strong operating leverage as its specialist business-lending franchise expanded. Full-year profit before tax rose 34% to $168.1 million, while pre-provision profit increased 42%. Gross loans and advances grew 18% to $14.7 billion, reaching the top of the bank’s guidance range and comfortably exceeding broader system growth.

Deposits increased 24% to $12.2 billion, return on equity improved by 1.1 percentage points to 6.4%, and earnings per share rose 29% to 9.9 cents. Reaffirmation of the FY27 outlook gave investors confidence that loan growth could continue without sacrificing margins or credit quality.

5. Super Retail Group (ASX:SUL): +15.8%

The owner of Supercheap Auto, rebel, BCF and Macpac reported record sales of $4.2 billion, up 3.2%, despite cautious discretionary spending. Profitability went backwards: normalised profit before tax fell 7% to $306 million and normalised NPAT declined 2.8% to $226 million as transformation spending weighed on margins. Nevertheless, the result exceeded subdued expectations, online sales grew 5.3% and membership across the group’s loyalty programs reached 13.1 million. Investors were also encouraged by positive early FY27 trading, stable gross margins and continued market-share gains. A fully franked 33-cent final dividend added to the appeal.

The five losers

1. Hansen Technologies (ASX:HSN): –21.2%

Hansen’s historic result met expectations, but investors recoiled from its outlook. The utility and communications software provider achieved an underlying EBITDA margin of 31%, exceeding its 30% target, while generating strong cash flow. However, management designated FY27 an “investment and transition year”, signalling a roughly five-percentage-point margin contraction as spending on products, sales capabilities and organisational changes increased.

Revenue had already been broadly flat, leaving investors concerned that the investment program would depress earnings before new growth appeared. Leadership changes, including the chief executive’s departure, added uncertainty. Management expects revenue growth and margins above 30% to return in FY28, but the market was unwilling to wait.

2. Life360 (ASX:360): –19.4%

Life360’s headline growth was impressive: quarterly revenue rose 38% to US$159 million, subscription revenue increased 31%, and adjusted EBITDA climbed 53% to US$31.1 million. Monthly active users reached 102.4 million and paying circles grew 27% to 3.2 million. The sell-off reflected expectations rather than a collapsing business.

Net income fell 18%, the net margin contracted from 6% to 3%, hardware shipments dropped 18%, and full-year EBITDA guidance was merely maintained. After a strong valuation run, investors wanted a larger upgrade and clearer evidence that heavy investment in advertising, international expansion and artificial intelligence would generate additional earnings.

3. PEXA Group (ASX:PXA): –17.0%

PEXA reported a 7% increase in continuing-operations revenue and 12% EBITDA growth to $152 million, accompanied by a two-percentage-point margin expansion. Free cash flow increased 39%, suggesting the core Australian electronic-conveyancing platform remained highly profitable. Investors instead concentrated on management’s warning that property-transfer volumes could decline, alongside regulatory uncertainty surrounding the fees PEXA can charge.

The company is also continuing to invest heavily in its loss-making international expansion. Morningstar considered the market reaction excessive, arguing that structural transfer-volume assumptions had not materially changed, but the combination of softer near-term activity and regulatory risk overwhelmed the respectable headline numbers.

4. SEEK (ASX:SEK): –14.3%

SEEK produced solid FY26 figures, including 10% revenue growth to $1.20 billion, a 15% rise in EBITDA and 28% growth in adjusted earnings per share. It also lifted its fully franked annual dividend by 13% to a record 52 cents. Those achievements were overshadowed by falling paid job-ad volumes and cautious FY27 assumptions.

The statutory accounts included a $201 million loss from the SEEK Growth Fund and $377 million of significant items, making the headline result considerably less attractive. Investors were particularly concerned that economic weakness could limit volumes while the company continued investing in platform integration and artificial-intelligence products.

5. JB Hi-Fi (ASX:JBH): –12.3%

JB Hi-Fi’s full-year result was broadly respectable, with group sales rising 5% to $11.1 billion and underlying earnings per share increasing 6% to $4.48. The damage came from its current-trading update. Australian sales were almost flat during the June quarter and deteriorated further in July, while earnings in the core Australian electronics business fell 3.6%.

Housing-related categories were particularly weak as higher living costs and interest rates constrained household budgets. With JB Hi-Fi entering the season on a demanding valuation, an in-line historic result was not sufficient: the loss of sales momentum prompted investors to rapidly reduce their expectations for FY27.

Overall, the season showed that share prices react less to whether profits rose or fell than to the gap between results and expectations. Bapcor was rewarded for being less troubled than feared, while several fundamentally profitable companies were punished because their outlooks failed to justify elevated valuations.