Ambrosia Energy wants to build power plants in less than 12 months while undercutting natural gas. It hopes to build gigawatts' worth by 2030.

The net zero economy is booming, so claims that prosperity depends on oil and gas are bunkum – unless you’re a Reform backer with fossil fuel interests, of course

Really? You want to destroy a million jobs? Vote Reform UK for mass unemployment: is that your pitch? Hammer these questions home whenever you meet a supporter of the party. Or, for that matter, a Conservative, as their party now takes an almost identical line.

The figures are stark. They were compiled not by Just Stop Oil or the Green party, but by that bastion of conservatism, the Confederation of British Industry. They show that the net zero economy now directly employs more than 300,000 full-time workers, while supporting the jobs of 1.1 million. The net zero sector is worth £100bn to the UK already, and is likely to grow by hundreds of billions more. The rest of the green economy directly employs a further 600,000.

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© Photograph: Tolga Akmen/EPA

© Photograph: Tolga Akmen/EPA

© Photograph: Tolga Akmen/EPA

The 700 projects include wind and solar farms, battery storage, gas and hydro plans

More than half the renewable energy projects needed to meet the government’s clean power targets by 2030 are now able to plug into the electricity grid after years of delay, according to the system operator.

The National Energy System Operator (Neso) has offered more than 700 clean energy projects in Great Britain a grid connection date since the start of the year, after a two-year process to unblock a bottleneck that threatened to delay projects into the 2030s.

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© Photograph: Murdo MacLeod/The Guardian

© Photograph: Murdo MacLeod/The Guardian

© Photograph: Murdo MacLeod/The Guardian

Australia leads world in residential solar per capita with 22GW installed but commercial and industrial sector has deployed only a quarter of that

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Australia’s revolution in rooftop solar has left behind commercial and industrial buildings, where installations have lagged far behind homes, according to new analysis.

Australia leads the world in residential solar on per capita terms, with 22GW installed as of last December. But businesses have only installed about a quarter of that – 5.6GW – despite consuming more electricity than households, a report from the Institute for Energy Economics and Financial Analysis (IEEFA) has found.

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© Photograph: Bloomberg/Getty Images

© Photograph: Bloomberg/Getty Images

© Photograph: Bloomberg/Getty Images

Australians are world leaders in rooftop solar and home batteries - but greater energy efficiency could make them a triple threat

• Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint

• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

For David and Ruth Hudspeth, the process of turning their 1950s brick veneer house in Melbourne’s eastern suburbs into a cosy, efficient and fully electric home took several years.

They started with insulation in the ceiling and replacing an old and “pretty dangerous” gas heater. They swapped their leaky hot water system for a heat pump, and built a roof over the outdoor deck for shade and extra solar panels, later adding an electric car and a home battery into the mix.

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© Photograph: Getty Images

© Photograph: Getty Images

© Photograph: Getty Images

How to change the energy market from within. Plus: Is Iran Trump’s Vietnam?

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Last week, as the war in Iran continued to choke global oil supplies, the UK government announced a 13% increase in the cap on energy prices. But it was another related story on the other side of the world that caught my eye.

In Australia, the energy minister announced a fall of up to 10% in the benchmark electricity price in parts of the country, driven by record levels of renewables and batteries in the power grid.

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© Illustration: Guardian Design

© Illustration: Guardian Design

© Illustration: Guardian Design

Maxwell Chikumbutso's claim of a "free energy" vehicle powered by radio frequency energy, contradicts established physics, particularly the laws of thermodynamics. All forms of energy involve costs. Chikumbutso provides no evidence to support his "free energy" from radio-waves claim. It is foolish to believe in unverified revolutionary energy solutions.

The generation and evolution of electricity is discussed, highlighting significant milestones from early static electricity experiments to modern AC power generation techniques. Dirty electricity, characterized by high-frequency electrical noise, can lead to health issues. There is a strong need for more research on this electromagnetic pollution and its health impacts.

Nour Haydar speaks with Christopher Knaus about the BHP files – the cache of internal documents leaked to the Guardian and the ABC’s Four Corners – which show that the world’s biggest miner has war-gamed ways to massively delay decarbonisation

Additional audio in this episode was sourced by Financial Times Live

Read more:

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© Composite: Victoria Hart/Guardian

© Composite: Victoria Hart/Guardian

© Composite: Victoria Hart/Guardian

Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies

The timing was rich with symbolism. As intense heatwaves pummelled Europe and Asia, and oil markets around the world leapt and sputtered, the two big chimneys of one of Australia’s largest power stations were being demolished. Meanwhile, the Australian energy minister was holding a media conference to hail a fall of up to 10% in the benchmark electricity price in parts of the country.

Quietly, and with surprisingly little fanfare from the rest of the world, Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies. The country was already one of the global leaders in domestic solar power, with panels on one in three homes. It also remains, however, a major contributor to the climate crisis through its vast fossil fuel exports. But it is batteries that are giving Australia a new burst of speed.

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© Photograph: Hollie Adams/Reuters

© Photograph: Hollie Adams/Reuters

© Photograph: Hollie Adams/Reuters

More than 400,000 batteries have been installed under the cheaper home batteries scheme. Here’s how to get the best bang for your buck

• Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint

• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

If Australians love solar, they are head over heels for home batteries. More than 400,000 batteries have been installed under the government’s subsidy scheme.

Here’s what you need to consider if you’re looking at getting one installed.

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© Composite: Getty Images

© Composite: Getty Images

© Composite: Getty Images

Energy specialists say abandoning net zero and increasing oil and gas drilling would cause more instability for Britons

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Abandoning net zero and drilling for more oil and gas in the North Sea would be a massive setback for the UK and would not help the economy, leading experts have said in response to claims by the former prime minister Tony Blair.

“This is a bizarre intervention to make during the worst May heatwave on record and when the Iran crisis is providing yet more evidence of the enormous costs of oil and gas,” said Ed Matthew, the UK programme director at the E3G thinktank. “Clean energy is cheaper energy – it protects our bills from prices skyrocketing, its running costs are virtually zero, and it doesn’t cause climate change which threatens economic collapse ... The government should ignore Blair’s ideological nonsense and focus on what works.”

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© Photograph: Christopher Furlong/Getty Images

© Photograph: Christopher Furlong/Getty Images

© Photograph: Christopher Furlong/Getty Images

More Americans are using small solar panels in their back yards or balconies as a clean way to cut their electric bills

If you feel like your electricity bill just keeps climbing, you aren’t imagining it. Since 2020, US residential energy prices have surged by about 30%, making power the largest household energy expense behind gasoline, according to the US Energy Information Administration.

But for residents like Alex Curtis, the days of feeling powerless against rising costs are coming to an end. Curtis is waging a war on his electric bill, and his new weapon of choice is a lightweight, thin-film solar panel.

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© Photograph: Climate Central

© Photograph: Climate Central

© Photograph: Climate Central

Property owners’ lack of motivation due to ‘split incentive’ is main reason rental properties are missing out on energy upgrades, research finds

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Renters make up nearly a third of Australian households yet many are missing out on energy upgrades – such as insulation, appliances and rooftop solar – that could slash their power bills and improve home comfort.

The problem, according to the Institute for Energy Economics and Financial Analysis (IEEFA), is landlords’ lack of motivation.

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© Photograph: David Mariuz/AAP

© Photograph: David Mariuz/AAP

© Photograph: David Mariuz/AAP

Exclusive: Cache of internal documents leaked to the Guardian and the ABC’s Four Corners show multinational has war-gamed ways to massively delay decarbonisation

• Revealed: the internal BHP memo that slammed the brakes on world’s biggest miner’s climate push

• Read more from the BHP files investigation here

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The world’s biggest miner has halted or delayed projects to cut vast amounts of emissions and has quietly war-gamed options to push major climate investments in its Western Australian iron ore operations into the next two decades, internal documents show.

An exclusive investigation based on documents leaked to the Guardian and the ABC’s Four Corners can reveal that BHP, one of Australia’s biggest historic emitters, has dumped plans for a facility that could have significantly reduced emissions and has put on ice renewable projects designed to power its iron ore operations in the vast, resource-rich Pilbara region.

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© Illustration: Guardian Design

© Illustration: Guardian Design

© Illustration: Guardian Design

Exclusive: BHP once dubbed climate change an ‘existential’ threat. But leaked documents show it has backtracked on decarbonisation at a vast network of mines

• Read more from the BHP files investigation here

In the middle of 2019, London was sweltering through a heatwave.

Temperature records tumbled. Frail, ill and elderly people died in their hundreds.

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© Composite: Guardian

© Composite: Guardian

© Composite: Guardian