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A new Oxford University study found air source heat pumps to be more efficient than oil and gas heating in cold and subzero temperatures.

Heat pumps are a cost-effective, efficient, and low-emissions way to cool and warm households, with global sales increasing 11% in 2022 and US sales outpacing those of gas furnaces for the first time the same year. But misinformation and misunderstandings persist about the ability of air source heat pumps to perform in below-freezing temperatures.

New research from researchers at Oxford University and the Regulatory Assistance Project (RAP) found that not only do heat pumps have superior efficiency compared to oil and gas systems, but they also perform reliably in temperatures well below 0°C (32°F).

Mild cold climate results

The researchers write in the journal Joule about heat pumps’ coefficient of performance (COP), which is the ratio of the useful heat outputted to energy consumed:

Typical COP values for heat pumps lie in the range of 3 to 6, indicating that 3 to 6 units of heat are created from each unit of electricity used. A year-round average COP of 3-4 is common for household applications.

The researchers looked at air-source heat pump performance in mild cold climates in Canada, China, Germany, Switzerland, the US, and the UK. They plotted average COP measurements versus external temperature collected from seven field-testing studies in five countries. A trend line calculated using a locally weighted scatterplot smoothing is shown in the below chart:

They concluded:

When the outside temperature was between 5C and −10C, the mean COP across all systems was 2.74 and the median was 2.62, sufficient to meet heating loads at much higher efficiency than fossil heating and electric resistance heat alternatives.

In climates that stay above -10C (14F), the air source heat pump is more than able to do the job on its own – in a cheaper, much cleaner way than fossil-fuel-powered heating. No oil or gas backup is needed, asserts the scientists.

Extreme cold climate results

The team also tested specially engineered “cold-climate heat pumps” in extreme cold in Minnesota, Alaska, and Finland. They found that those units “can operate with a COP between 1.5 and 2. However, considering the related increase in heating demand and decrease in device efficiency, some form of backup heating may be required.”

The researchers concluded that “backup heating was typically only engaged when the outside temperature dropped past −10C (14F) or lower. Above −10C (14F), heat pumps were able to provide the required heat at relatively high efficiency.”

Electrek’s Take

If you have a gas or oil heating system in your home, it’s worth getting a heat pump. And if you live in a very cold climate, you’ll be able to use your heat pump most of the time and just tap into your old system as backup if extreme cold strikes.

Having a heat pump is going to reduce your heating costs as well as your household’s emissions. And as temperatures continue to rise overall, the heat pump will cool down your home in the warmer months as well.

Read more: This US company’s heat pump works below -22F


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$14B in EV, renewable projects scrapped as tax credit fears grow

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B in EV, renewable projects scrapped as tax credit fears grow

More than $14 billion in US renewable and EV investments and 10,000 new jobs have been scrapped or put on hold since January, according to a new analysis from E2 and the Clean Economy Tracker. The reason: growing fears that the Republican-majority Congress will pull the plug on federal clean energy tax credits.

In April alone, companies backed out of $4.5 billion in battery, EV, and wind projects right before the House passed a sweeping tax and spending bill that would gut the federal tax incentives fueling the clean energy boom. E2 also found another $1.5 billion in previously unreported project cancellations from earlier in the year.

Now, with the Senate preparing to take up the so-called “One Big Beautiful Bill Act,” E2 says over 10,000 clean energy jobs have already vanished.

“If the tax plan passed by the House last week becomes law, expect to see construction and investments stopping in states across the country as more projects and jobs are cancelled,” said Michael Timberlake, E2’s communications director. “Businesses are now counting on Congress to come to its senses and stop this costly attack on an industry that is essential to meeting America’s growing energy demand and that’s driving unprecedented economic growth in every part of the country.”

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Ironically, it’s Republican-led congressional districts – the biggest beneficiaries of the Biden administration’s clean energy tax credits passed in 2022 – that are feeling the most pain. So far, more than $12 billion in investments and over 13,000 jobs have been canceled in GOP districts.

Through April, 61% of all clean energy projects, 72% of jobs, and 82% of investments have been in Republican districts.

Despite the rising number of cancellations, some companies are still forging ahead. In April, businesses announced nearly $500 million in new clean energy investments across six states. That includes a $400 million expansion by Corning in Michigan to make solar wafers, which is expected to create at least 400 jobs, and a $9.3 million investment from a Canadian solar equipment company in North Carolina.

If completed, the seven projects announced last month could create nearly 3,000 permanent jobs.

To date, E2 has tracked 390 major clean energy projects across 42 states and Puerto Rico since the Inflation Reduction Act passed in August 2022. In total, companies plan to invest $132 billion and hire 123,000 permanent workers.

But the report warns that momentum could grind to a halt if the House tax plan becomes law. Since the clean energy tax credits were signed into law, 45 announced projects have been canceled, downsized, or closed entirely, wiping out nearly 20,000 jobs and $16.7 billion in investments.

What’s more, Trump’s Department of Energy announced today that it was killing more than $3.7 billion in funding for carbon capture and sequestration (CCS) and decarbonization initiatives. Eighteen out of 24 projects were awarded through DOE’s Industrial Demonstrations Program (IDP), which was made law in the Inflation Reduction Act. It aimed to strengthen the economic competitiveness of US manufacturers in global markets demanding lower carbon emissions, while supporting US manufacturing jobs and communities.

Executive Director Jason Walsh of the BlueGreen Alliance said in a statement in response to today’s DOE announcement:   

The awarded projects that DOE is seeking to kill are concentrated in rural areas and red states. American manufacturers are hungry to partner with the federal government to bolster US industry. The IDP saw $60 billion worth of applications during the program selection process, a ten-times oversubscription. 

President Trump claims to be a champion of American manufacturing, but today’s announcement is further evidence that he and his Secretary of Energy are liars.

Read more: Global energy giant RWE halts US offshore wind because of Trump


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Tesla prototype spotted at factory – sparking speculation

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Tesla prototype spotted at factory – sparking speculation

A Tesla prototype was spotted at the Fremont factory in California, sparking speculation that it’s the new “cheaper Tesla”, but it looks like a regular Model Y.

A drone operator flew over the Fremont factory this week and spotted a Tesla prototype with light camouflage on the front and back ends.

The vehicle is making a lot of people talk on social media and the media as many think it could be a new “affordable model” coming to Tesla.

Other than the camouflage, the vehicle looks just like a regular Model Y:

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It’s likely one of two things: a new “stripped-down Model Y” or a Model Y Performance.

Model Y Performance is the only version that Tesla hasn’t launched since the design changeover earlier this year.

The “stripped-down Model Y” is what will replace Tesla’s upcoming “affordable models.”

We have been reporting on this new vehicle program from Tesla for a while now.

It came to life just over a year ago as a pivot for Tesla after CEO Elon Musk canceled two cheaper vehicles that Tesla was working on, commonly referred as “the $25,000 Tesla”. Those vehicles were codenamed NV91 and NV92, and they were based on the new vehicle platform that Tesla is now reserving for the Cybercab.

Instead, Musk saw that Tesla’s Model 3 and Model Y production lines were starting to be underutilized as Tesla faced demand issues. Therefore, Tesla canceled the vehicles program based on the new platform and decided to build new vehicles on Model 3/Y platform using the same production lines.

We previously reported that these electric vehicles will likely look very similar to Model 3 and Model Y.

In recent months, several other media reports reinforced that, and Tesla all but confirmed it during its latest earnings call.

Considering this looks like a regular Model Y, it could be the new cheaper and less feature rich Model Y:

Some people are claiming that this vehicle looks smaller than the Model Y, but it’s difficult to tell as the black camouflage on the ends can confuse the eye.

It looks like a very similar size when it passes near other Tesla vehicles:

What do you think it is? Let us know in the comment section below.

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Lumina hopes this 32-ton dozer makes them the Tesla of heavy equipment [video]

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Lumina hopes this 32-ton dozer makes them the Tesla of heavy equipment [video]

San Francisco-based founder Ahmed Shubber wants to emulate Elon Musk’s success in the electric construction equipment world – and he hopes his new, 32-ton electric bulldozer is enough to make the world sit up and take notice.

Since launching his company, Lumina, in 2021, Shubber has raised more than $8 million and grown the company’s global (!?) headcount to 26 people. That fruit of that team’s labor is the machine seen here. Dubbed “Moonlander,” the first-of-its-kind prototype occupies the physical footprint of something like a Caterpillar D6, but packs the blade and performance of the larger, more powerful Cat D9.

“A D6 could not push that blade,” David Wright, Lumina’s head of UK operations, told the assembled media at the Moonlander’s launch last week. “We can have that blade full of material, full dozing seven to nine cubic meters of material, for eight to 10 hours.”

Moving all that mass takes a lot of power – but getting that power back into the Moonlander’s batteries won’t take a lot of time, thanks to the machine’s 300 kW charging capability.

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“Even if you spend all morning heavy dozing and you’re a bit worried about how much juice you’ve used — well, your operators are going to take a union-mandated lunch break, right?” asks Wright. “Plug it in, and in 30 minutes, you’ve put 50% of power back in again.”

Shubber says Lumina is working to raise from $20-40 million for its Series A round to develop the company’s next electric equipment asset: a 100-ton electric excavator called Blade Runner. And, in a truly Tesla-like fashion, Shubber says he’s on track to hit an ambitious $100 million revenue target sometime in the next 24 months.

And, of course, the Blade Runner will feature state-of-the-art autonomous operating technology (because: of course it will).

We’ll see how that unfolds in 2 year’s time, I guess. In the meantime, check out this Lumina promo video for Moonlander, below, then let us know what you think of Shuber’s take on an electric job site in the comments.

Lumina ML6 electric dozer video


SOURCE | IMAGES: Lumina; via Business Insider, Earthmovers Magazine.


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