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LED light bulb (L) and a compact florescent (CFL) light bulb

Scott Olson | Getty Images

On Tuesday, the Biden administration put the final nail in the coffin for incandescent light bulbs, the result of a decade-plus-long legislative path.

The journey began in 2007 when the Energy Independence and Security Act passed. That law required the Department of Energy to evaluate whether efficiency standards for light bulbs needed to be set or amended and required a minimum standard of energy efficiency for light bulbs of 45 lumens per watt to be considered.

Lumens are a measure of how much light is coming from a light bulb and is a more modern measure than watts, which measures energy usage, according to the DOE. A rule requiring the minimum standard efficiency of 45 lumens per watt for light bulbs effectively bans halogen and incandescent bulbs.

The 2007 law required that if the DOE determined a new energy efficiency standard was necessary, it should go into effect by January 1, 2017. But politics intervened as the Trump administration appealed those rules.

The Biden administration picked the issue back up. And in April 2022, the Biden administration issued a rule requiring the minimum standard efficiency of 45 lumens per watt, which became effective in July. At that time, the Department of Energy said it would have a gradual transition to the new rule so that stores with inventory would not be stuck with light bulbs they could no longer sell. In Department of Energy lingo, this is called “progressive enforcement.”

Full enforcement of the ban for retailers took effect on Tuesday.

The DOE does not disclose its techniques for enforcing these step-wise implementation of the rule. However, the agency’s new regulations will be enforced in “a fair and equitable manner,” and smaller retailers are advised to reach out to the DOE to speak about existing inventory they may still have on hand, a spokesperson told CNBC.

Enforcing the sale of the more energy-efficient light bulbs will save consumers nearly $3 billion per year on their utility bills, according to DOE estimates, and cut carbon emissions by 222 million metric tons over the next 30 years. That’s about the quantity of emissions that 28 million homes generate in a year, the Department of Energy said.

“By raising energy efficiency standards for lightbulbs, we’re putting $3 billion back in the pockets of American consumers every year and substantially reducing domestic carbon emissions,” Energy Secretary Jennifer Granholm said in a written statement back in April 2022 when the rules were reinstated. “The lighting industry is already embracing more energy efficient products, and this measure will accelerate progress to deliver the best products to American consumers and build a better and brighter future.”

Not all light bulbs are included in the ban. Exceptions include a whole slew of specific light bulb implications, including appliance lamps, black light lamps, bug lamps, colored lamps, general service fluorescent lamps, marine lamps, marine signal service lamps, mine service lamps, sliver bowl lamps, showcase lamps, and traffic signal lamp, to name a few.

Also, while the 45 lumens per watt energy efficiency standard was being phased in, in December the Biden administration kickstarted the process to consider increasing the energy efficiency standard for light bulbs to over 120 lumens per watt for the most common bulbs. That would accelerate the transition away from comapct fluorescent bulbs as well, toward more efficient and long-lasting LED bulbs. If that more restrictive energy efficiency rule were to go into effect for light bulbs, then there would be a timed phase-in, similar to the rule for 45 lumens per watt.

Turning My Home Zero Energy For $48K In Portland, OR

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Alibaba to launch AI-powered glasses creating a Chinese rival to Meta

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Alibaba to launch AI-powered glasses creating a Chinese rival to Meta

Alibaba announced plans to release a pair of smart glasses powered by its AI models. The Quark AI Glasses are Alibaba’s first foray into the smart glasses product category.

Alibaba

Alibaba on Monday unveiled a pair of smart glasses powered by its artificial intelligence models, marking the Chinese firm’s first foray into the product category.

The e-commerce giant said the Quark AI Glasses will be launched in China by the end of 2025 with hardware powered by the firm’s Qwen large language model and its advanced AI assistant called Quark.

The Hangzhou, headquartered company is one of the leaders in China’s AI space, aggressively launching new models with capabilities that compete with Western counterparts like OpenAI.

Many tech companies see wearables, specifically glasses, as the next frontier in computing alongside the smartphone. Quark, which was updated this year, is currently available as an app in China. Alibaba is stepping into the hardware game as a way to distribute the app more widely.

The Quark AI Glasses are Alibaba’s answer to Meta’s smart glasses that were designed in collaboration with Ray-Ban. The Chinese tech giant will also now compete with Chinese consumer electronics player Xiaomi who this year released its own AI glasses.

Why Meta and Snap think AR glasses will be the future of computing

Alibaba said its glasses will support hands-free calling, music streaming, real-time language translation, and meeting transcription. The glasses also feature a built-in camera.

Alibaba owns a range of different services in China from mapping to an online travel agent. Its affiliate company Ant Group also runs the widely-used Alipay mobile service. Alibaba said users will be able to use a navigation service via the glasses, pay with Alipay and compare prices on Taobao, its China e-commerce platform.

The firm has yet to release other details such as the price and technical specifications.

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Samsung Electronics signs $16.5 billion chip-supply contract in boost to foundry business; shares rise

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Samsung Electronics signs .5 billion chip-supply contract in boost to foundry business; shares rise

A Samsung flag flies outside the company office in Seoul, South Korea on February 05, 2024.

Chung Sung-jun | Getty Images News | Getty Images

Samsung Electronics has entered into a $16.5 billion contract for supplying semiconductors to a major company, a regulatory filing by the South Korean company showed Monday.  

The memory chipmaker, which did not name the counterparty, mentioned in its filing that the effective start date of the contract was July 26, 2024 — receipt of orders — and its end date was Dec. 31, 2033.

Samsung declined to comment on details regarding the counterparty.

The company said that details of the deal, including the name of the counterparty, will not be disclosed until the end of 2033, citing a request from the second party “to protect trade secrets,” according to a Google translation of the filing in Korean.

“Since the main contents of the contract have been not been disclosed due to the need to maintain business confidentiality, investors are advised to invest carefully considering the possibility of changes or termination of the contract,” the company said. Its shares were up nearly 3% in early trading.

Local South Korean media outlets have said that American chip firm Qualcomm could potentially place an order for Samsung’s 2 nanometer chips.

While Qualcomm is a possibility, given its potential 2 nanometer project with Samsung, Tesla seems the more probable customer, Ray Wang, research director of semiconductors, supply chain and emerging technology at The Futurum Group, told CNBC

Samsung’s foundry service manufactures chips based on designs provided by other companies. It is the second largest provider of foundry services globally, behind Taiwan Semiconductor Manufacturing Company.

The company said in April that it was aiming for its foundry business to start mass production of its next-generation 2 nanometer and secure major orders for the advanced product. In semiconductor technology, smaller nanometer sizes signify more compact transistor designs, which lead to greater processing power and efficiency.

Samsung, which is set to deliver earnings on Thursday, expects its second-quarter profit to more than halve. An analyst previously told CNBC that the disappointing forecast was due to weak orders for its foundry business and as the company has struggled to capture AI demand for its memory business.

The company has fallen behind competitors SK Hynix and Micron in high-bandwidth memory chips — an advanced type of memory used in AI chipsets.

SK Hynix, the leader in HBM, has become the main supplier of these chips to American AI behemoth Nvidia. While Samsung has reportedly been working to get the latest version of its HBM chips certified by Nvidia, a report from a local outlet suggests these plans have been pushed back to at least September.

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Tesla investors are growing wary of Elon Musk’s futuristic promises

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Tesla investors are growing wary of Elon Musk's futuristic promises

Tesla CEO Elon Musk speaks alongside U.S. President Donald Trump to reporters in the Oval Office of the White House on May 30, 2025 in Washington, DC.

Kevin Dietsch | Getty Images

At Tesla, vehicle sales are slumping, profits are thinning and revenue from regulatory credit sales are poised to dry up due to Republican-led policy changes.

In the past, CEO Elon Musk’s futuristic promises have convinced investors to look past top and bottom line numbers.

Not now.

Following another fairly dismal earnings report this week, Musk told analysts on the call that Tesla’s electric vehicles will soon become driverless, making money for owners while they sleep. He also said Tesla’s robotaxi service, which the company recently started testing in a limited capacity in Austin, Texas, will expand to other states, with a goal of being able to reach half the U.S. population by year-end, “assuming we have regulatory approvals.”

It didn’t matter.

Tesla shares plummeted 8% on Thursday as investors focused on the immediate challenges facing the company, including the rapid rise of lower-cost EV competitors, particularly in China, and a political backlash against Musk that harmed Tesla’s brand in the U.S. and Europe.

Automotive sales declined 16% year-over-year in the second quarter for the EV maker, with weak sales numbers continuing in Europe and California. Musk said there could be a “few rough quarters” ahead because of the EV credits expiring and President Donald Trump’s tariffs.

The stock bounced back some on Friday, gaining 3.5%, but still ended the week down and has now fallen 22% this year, the worst performance among tech’s megacaps. The Nasdaq rose 1% for the week and is up more than 9% in 2025, closing at a record on Friday.

“Look, we love robotaxis. And robots,” wrote analysts at Canaccord Genuity, who recommend buying Tesla’s stock, in a note after the earnings report. “Over time, Tesla is well positioned to benefit from these future-forward opportunities.”

The analysts, however, said that they’re focused on the profit and loss statement, writing: “But we love growth too, in the here and now. We need the P&L dynamics to turn.”

Analysts at Jefferies described the earnings update as “a bit dull.” And Goldman Sachs said Tesla’s robotaxi effort is “still small” with limited technical data points.

Tesla didn’t respond to a request for comment.

Canaccord Genuity's Gianarikas: We may have seen the bottom for Tesla, positive acceleration to come

Musk, who has previously called himself “pathologically optimistic,” has been able to sway shareholders and send the stock soaring at times with promises of self-driving cars, humanoid robots and more affordable EVs.

But after a decade of missed self-imposed deadlines on autonomous driving, Wall Street is watching Tesla fall behind Alphabet’s Waymo in the U.S. and Baidu’s Apollo Go in China.

In Tesla’s shareholder deck, the company said the second quarter marked the start of its “transition from leading the electric vehicle and renewable energy industries to also becoming a leader in AI, robotics and related services.” The company didn’t offer any new guidance for growth or profits for the year ahead.

Regulatory hurdles

Business Insider reported on Friday that Tesla told staff its robotaxi service could launch in the San Francisco Bay Area as soon as this weekend.

But Tesla hasn’t applied for permits that would be required to run a driverless ridehailing service in California, CNBC confirmed. The company would first need authorizations from the state’s Department of Motor Vehicles and the California Public Utilities Commission (CPUC).

The CPUC told CNBC on Friday, that under existing permits, Tesla can only operate a human-driven chartered vehicle service, not carry passengers in robotaxis.

Waymo driverless vehicles wait at a traffic light in Santa Monica, California, on May 30, 2025.

Daniel Cole | Reuters

On the earnings call, Musk and other Tesla execs claimed the company was working on regulatory approvals to launch in Nevada, Arizona, Florida and other markets, in addition to San Francisco, but offered no details about what would be required.

Within Austin, the company said its robotaxi service had driven 7,000 miles, and that Tesla has been restricting its robotaxis’ to roads with a speed limit of 40 miles per hour. The Austin service involves a small fleet of about 10 to 20 Model Y vehicles equipped with the company’s latest self-driving systems.

The Tesla robotaxis rely on remote supervision by employees in a customer service center, and a human safety supervisor in the front passenger seat, ready to intervene if needed.

Compare that to what Alphabet said on its second-quarter earnings call the same day as Tesla’s results.

“The Waymo Driver has now autonomously driven over 100 million miles on public roads, and the team is testing across more than 10 cities this year, including New York and Philadelphia,” Alphabet said. Meanwhile, Waymo has become significant enough that Alphabet added a category to its Other Bets revenue description in its latest quarterly filing.

“Revenues from Other Bets are generated primarily from the sale of autonomous transportation services, healthcare-related services and internet services,” the filing said. The Other Bets segment remains relatively small, with revenue coming in at $373 million in the quarter. 

Regardless of investor skepticism, Musk is more bullish than ever.

On Friday, the world’s richest person posted on his social network X that he thinks Tesla will someday be worth $20 trillion. On the earnings call earlier in the week, he said that when it comes to AI for cars and robots, “Tesla is actually much better than Google by far” and “much better than anyone at real world AI.”

CORRECTION: The Waymo Driver has now autonomously driven over 100 million miles on public roads, according to Alphabet. A previous version misstated the number of miles.

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