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Bitcoin Energy Consumption drives debate on blockchain mining, proof-of-work, carbon footprint, and emissions, with CCAF estimates in terawatt hours highlighting electricity demand, fossil fuel reliance, and sustainability concerns for data centers and cryptocurrency networks.

Key Points

Electricity used by Bitcoin proof-of-work mining, often fossil-fueled, estimated by CCAF in terawatt hours.

✅ CCAF: 40-445 TWh, central estimate ~130 TWh

✅ ~66% of mining electricity sourced from fossil fuels

✅ Proof-of-work increases hash rate, energy, and emissions

The University of Cambridge Centre for Alternative Finance (CCAF) studies the burgeoning business of cryptocurrencies.

It calculates that Bitcoin's total energy consumption is somewhere between 40 and 445 annualised terawatt hours (TWh), with a central estimate of about 130 terawatt hours.

The UK's electricity consumption is a little over 300 TWh a year, while Argentina uses around the same amount of power as the CCAF's best guess for Bitcoin, as countries like New Zealand's electricity future are debated to balance demand.

And the electricity the Bitcoin miners use overwhelmingly comes from polluting sources, with the U.S. grid not 100% renewable underscoring broader energy mix challenges worldwide.

The CCAF team surveys the people who manage the Bitcoin network around the world on their energy use and found that about two-thirds of it is from fossil fuels, and some regions are weighing curbs like Russia's proposed mining ban amid electricity deficits.

Huge computing power - and therefore energy use - is built into the way the blockchain technology that underpins the cryptocurrency has been designed.

It relies on a vast decentralised network of computers.

These are the so-called Bitcoin "miners" who enable new Bitcoins to be created, but also independently verify and record every transaction made in the currency.

In fact, the Bitcoins are the reward miners get for maintaining this record accurately.

It works like a lottery that runs every 10 minutes, explains Gina Pieters, an economics professor at the University of Chicago and a research fellow with the CCAF team.

Data processing centres around the world, including hotspots such as Iceland's mining strain, race to compile and submit this record of transactions in a way that is acceptable to the system.

They also have to guess a random number.

The first to submit the record and the correct number wins the prize - this becomes the next block in the blockchain.

Estimates for bitcoin's electricity consumption
At the moment, they are rewarded with six-and-a-quarter Bitcoins, valued at about $50,000 each.

As soon as one lottery is over, a new number is generated, and the whole process starts again.

The higher the price, says Prof Pieters, the more miners want to get into the game, and utilities like BC Hydro suspending new crypto connections highlight grid pressures.

"They want to get that revenue," she tells me, "and that's what's going to encourage them to introduce more and more powerful machines in order to guess this random number, and therefore you will see an increase in energy consumption," she says.

And there is another factor that drives Bitcoin's increasing energy consumption.

The software ensures it always takes 10 minutes for the puzzle to be solved, so if the number of miners is increasing, the puzzle gets harder and the more computing power needs to be thrown at it.

Bitcoin is therefore actually designed to encourage increased computing effort.

The idea is that the more computers that compete to maintain the blockchain, the safer it becomes, because anyone who might want to try and undermine the currency must control and operate at least as much computing power as the rest of the miners put together.

What this means is that, as Bitcoin gets more valuable, the computing effort expended on creating and maintaining it - and therefore the energy consumed - inevitably increases.

We can track how much effort miners are making to create the currency.

They are currently reckoned to be making 160 quintillion calculations every second - that's 160,000,000,000,000,000,000, in case you were wondering.

And this vast computational effort is the cryptocurrency's Achilles heel, says Alex de Vries, the founder of the Digiconomist website and an expert on Bitcoin.

All the millions of trillions of calculations it takes to keep the system running aren't really doing any useful work.

"They're computations that serve no other purpose," says de Vries, "they're just immediately discarded again. Right now we're using a whole lot of energy to produce those calculations, but also the majority of that is sourced from fossil energy, and clean energy's 'dirty secret' complicates substitution."

The vast effort it requires also makes Bitcoin inherently difficult to scale, he argues.

"If Bitcoin were to be adopted as a global reserve currency," he speculates, "the Bitcoin price will probably be in the millions, and those miners will have more money than the entire [US] Federal budget to spend on electricity."

"We'd have to double our global energy production," he says with a laugh, even as some argue cheap abundant electricity is getting closer to reality today. "For Bitcoin."

He says it also limits the number of transactions the system can process to about five per second.

This doesn't make for a useful currency, he argues.

Rising price of bitcoin graphic
And that view is echoed by many eminent figures in finance and economics.

The two essential features of a successful currency are that it is an effective form of exchange and a stable store of value, says Ken Rogoff, a professor of economics at Harvard University in Cambridge, Massachusetts, and a former chief economist at the International Monetary Fund (IMF).

He says Bitcoin is neither.

"The fact is, it's not really used much in the legal economy now. Yes, one rich person sells it to another, but that's not a final use. And without that it really doesn't have a long-term future."

What he is saying is that Bitcoin exists almost exclusively as a vehicle for speculation.

So, I want to know: is the bubble about to burst?

"That's my guess," says Prof Rogoff and pauses.

"But I really couldn't tell you when."

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BC Hydro pandemic electricity trends reveal weekend-like energy consumption patterns: later morning demand, earlier evenings, more cooking, streaming on smart TVs, and work-from-home routines, with tips to conserve using laptops and small appliances.

Key Points

Weekend-like shifts in power demand from work-from-home routines: later mornings, earlier evenings, and more streaming.

✅ Later morning electricity demand; earlier evening peaks

✅ More cooking and baking; increased streaming after dinner

✅ Conservation tips: laptops, small appliances, smart TVs

The latest report on electricity usage in British Columbia reveals the COVID-19 pandemic has created an atmosphere where every day feels like a Saturday, a pattern also reflected in BC electricity demand during peak seasons.

BC Hydro says overall power usage hasn't changed much, but similar Ontario electricity demand shifts suggest regional differences, while Manitoba demand fell more noticeably, and a survey of 500 people shows daily routines have shifted dramatically since mid-March when pandemic-related closures began.

The hydro report says, with nearly 40 per cent of B.C. residents working from home, trends in residential electricity use confirm almost half are sleeping in and eating breakfast later, while about a quarter say they are showering less.

Those patterns more closely resemble what hydro says is typical weekend power consumption, and could influence time-of-use rates as electricity demand occurs later in the morning and earlier in the evening.

The report also finds many people are cooking and baking more than before the pandemic, preparing the evening meal earlier, streaming or viewing more television after dinner even as Ottawa's electricity consumption dipped earlier in the pandemic, and 80 per cent are going to bed later.

Although electricity use is normal for this time of year, hydro says homebound residents can conserve by using laptops instead of desktops, small appliances such as Instant Pots instead of ovens, and streaming movies or TV shows on a smart televisions instead of game consoles, even as Hydro One peak rates continue to shape consumption patterns elsewhere.

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British Columbia Electric Highway connects urban hubs and remote communities with 1,400+ EV charging stations, fast chargers, renewable energy, and clean transportation infrastructure, easing range anxiety and supporting climate goals across the province.

Key Points

A province-wide EV charging network for low-carbon travel with fast chargers in urban, rural and remote areas.

✅ 1,400+ stations across urban, rural, and remote B.C.

✅ Fast-charging, renewable-powered sites cut range anxiety

✅ Supports climate goals and boosts local economies

British Columbia has taken a significant step toward sustainable transportation with the completion of its Electric Highway, a comprehensive network of electric vehicle (EV) charging stations strategically placed across the province. This ambitious project not only supports the growing number of EV owners as the province expands EV charging across communities but also plays a crucial role in the province’s efforts to combat climate change and promote clean energy.

The Electric Highway spans from the southern reaches of the province to its northern edges, connecting key urban centers and remote communities alike. With over 1,400 charging stations installed at various locations, the network is designed to accommodate the diverse needs of EV drivers, ensuring they can travel confidently without the fear of running out of charge, with B.C. Hydro expansion in southern B.C. further bolstering coverage.

One of the standout features of the Electric Highway is its accessibility. Charging stations are located not only in urban areas but also in rural and remote regions, allowing residents in those communities to embrace electric vehicles, supported by EV charger rebates available provincewide.

The completion of the Electric Highway comes at a time when EV adoption is on the rise. As more consumers recognize the benefits of electric vehicles—including lower operating costs, reduced greenhouse gas emissions, and decreased dependence on fossil fuels—alongside rebates for home and workplace charging that reduce barriers—demand for charging infrastructure has surged. The Electric Highway provides the essential support needed to facilitate this shift, enabling residents and visitors to travel long distances with ease.

Moreover, the Electric Highway aligns with British Columbia’s climate goals. The province has set ambitious targets to reduce greenhouse gas emissions and transition to a low-carbon economy. By promoting electric vehicles and investing in charging infrastructure, British Columbia aims to lower emissions from the transportation sector, which is one of the largest contributors to climate change, with related efforts including electric ferries that complement road decarbonization. The completion of this highway is a significant milestone in the province’s journey toward a greener future.

The project has also garnered attention for its innovative approach to energy sourcing. Many of the charging stations are powered by renewable energy, further reducing their carbon footprint. This commitment to sustainability not only enhances the environmental benefits of electric vehicles but also reinforces British Columbia’s reputation as a leader in clean energy initiatives, including the $900 million hydrogen project advancing alternative fuels.

In addition to its environmental advantages, the Electric Highway has the potential to boost the local economy. As EV travel becomes more commonplace, businesses along the route can capitalize on increased foot traffic from travelers seeking charging options. This economic uplift is especially important for small towns and rural areas, where tourism and local commerce can thrive with the right infrastructure in place.

Furthermore, the completion of the Electric Highway is expected to catalyze further innovation in the EV sector. As charging technology continues to evolve, the province is poised to be at the forefront of advancements that enhance the EV driving experience. Initiatives such as ultra-fast charging and smart charging solutions could soon become the norm, making electric travel even more convenient.

The provincial government is also focusing on public awareness campaigns to educate residents about the benefits of electric vehicles and how to use the new charging infrastructure. By fostering a greater understanding of EV technology and its advantages, the government hopes to inspire more people to make the switch from gasoline-powered vehicles to electric ones.

In conclusion, the completion of the Electric Highway marks a transformative moment for British Columbia and its commitment to sustainable transportation. By providing a reliable network of charging stations, the province is making electric vehicle travel a reality for everyone, promoting environmental responsibility while supporting local economies. As more British Columbians embrace electric mobility, the Electric Highway stands as a testament to the province’s dedication to creating a cleaner, greener future for generations to come. With this essential infrastructure in place, British Columbia is paving the way for a new era of transportation that prioritizes sustainability and accessibility.

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Great Britain electricity generation spans renewables and baseload: wind, solar, nuclear, gas, and biomass, supported by National Grid interconnectors, embedded energy estimates, and BMRS data for dynamic imports and exports across Europe.

Key Points

A diverse, weather-driven mix of renewables, gas, nuclear, and imports coordinated by National Grid.

✅ Baseload from nuclear and biomass; intermittent wind and solar

✅ Interconnectors trade zero carbon imports via subsea cables

✅ Data from BMRS and ESO covers embedded energy estimates

Great Britain has one of the most diverse ranges of electricity generation in Europe, with everything from windfarms off the coast of Scotland to a nuclear power station in Suffolk tasked with keeping the lights on. The increasing reliance on renewable energy sources, as part of the country’s green ambitions, also means there can be rapid shifts in the main source of electricity generation. On windy days, most electricity generation comes from record wind generation across onshore and offshore windfarms. When conditions are cold and still, gas-fired power stations known as peaking plants are called into action.

The electricity system in Great Britain relies on a combination of “baseload” power – from stable generators such as nuclear and biomass plants – and “intermittent” sources, such as wind and solar farms that need the right weather conditions to feed energy into the grid. National Grid also imports energy from overseas, through subsea cables known as interconnectors that link to France, Belgium, Norway and the Netherlands. They allow companies to trade excess power, such as renewable energy created by the sun, wind and water, between different countries. By 2030 it is hoped that 90% of the energy imported by interconnectors will be from zero carbon energy sources, though low-carbon electricity generation stalled in 2019 for the UK.

The technology behind Great Britain’s power generation has evolved significantly over the last century, and at times wind has been the main source of electricity. The first integrated national grid in the world was formed in 1935 linking seven regions of the UK. In the aftermath of industrialisation, coal provided the vast majority of power, before oil began to play an increasingly important part in the 1950s. In 1956, the world’s first commercial nuclear reactor, Calder Hall 1 at Windscale (later Sellafield), was opened by Queen Elizabeth II. Coal use fell significantly in the 1990s while the use of combined cycle gas turbines grew, and in 2016 wind generated more electricity than coal for the first time. Now a combination of gas, wind, nuclear and biomass provide the bulk of Great Britain’s energy, with smaller sources such as solar and hydroelectric power also used. From October 2024, coal will no longer be used to generate electricity, following coal-free power records set in recent years.

Energy generation data is fetched from the Balancing Mechanism Reporting Service public feed, provided by Elexon – which runs the wholesale energy market – and is updated every five minutes, covering periods when wind led the power mix as well.

Elexon’s data does not include embedded energy, which is unmetered and therefore invisible to Great Britain’s National Grid. Embedded energy comprises all solar energy and wind energy generated from non-metered turbines. To account for these figures we use embedded energy estimates from the National Grid electricity system operator, which are published every 30 minutes.

Import figures refer to the net flow of electricity from the interconnectors with Europe and with Northern Ireland. A positive value represents import into the GB transmission system, while a negative value represents an export.

Hydro figures combine renewable run-of-the-river hydropower and pumped storage.

Biomass figures include Elexon’s “other” category, which comprises coal-to-biomass conversions and biomass combined heat and power plants.

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Manitoba Hydro Court Ruling affirms the Public Utilities Board exceeded its jurisdiction by ordering a First Nations rate class, overturning an electricity rates appeal tied to geography, poverty, and regulatory authority in Manitoba.

Key Points

A decision holding the PUB lacked authority to create a First Nations rate class, restoring uniform electricity pricing.

✅ Court says PUB exceeded jurisdiction creating on-reserve rate

✅ Equalized electricity pricing reaffirmed across Manitoba

✅ Geography, not poverty, found decisive in unlawful rate class

Manitoba Hydro was wrongly forced to create a new rate class for electricity customers living on First Nations, the Manitoba Court of Appeal has ruled. 

The court decided the Public Utilities Board "exceeded its jurisdiction" by mandating Indigenous customers on First Nations could have a different electricity rate from other Manitobans. 

The board made the order in 2018, which exempted those customers from the general rate increase that year of 3.6 per cent.

"The directive constituted the creation and implementation of general social policy, an area outside of the PUB's jurisdiction and encroaching into areas that are better suited to the federal and provincial government," says the decision, which was released Tuesday.

Hydro's appeal of the PUB's decision went to court earlier this year.

At the time, the Crown corporation acknowledged many Indigenous people on First Nations live in poverty, but it argued the Public Utilities Board was overstepping its authority in trying to address the issue by creating a new rate class.

It also argued it was against provincial law to charge different rates in different areas of the province.

The PUB, however, insisted that legislation gives it the right to decide which factors are relevant when considering electricity prices, such as social issues. 

Special Manitoba Hydro rate class needed to offset challenges of living on First Nations, appeal court hears
Manitoba Hydro can appeal order to create special First Nation rate
The board had heard evidence that some customers were making "unacceptable" sacrifices to keep the lights on each month.

Decision 'heavy-handed': AMC
The Assembly of Manitoba Chiefs, an intervener in the appeal, had backed the utility board's position. It said on-reserve customers are disproportionately vulnerable to rate hikes over time.

Grand Chief Arlen Dumas said Wednesday he was surprised by the court's ruling. 

He argued Indigenous people are unduly excluded in the setting of electricity rates in Manitoba.

"I will be speaking with my federal and provincial counterparts on how we deal with this issue, because I think it's the wrong [decision]. It's heavy-handed and we need to address it."

The appeal court judges said there is past precedent for setting equal electricity rates, regardless of where customers live. Legislation to that effect was made in the early 2000s and a few years ago, the PUB recognized that geographical limitations should not be imposed on a class of customers.

Since the board's new order didn't extend the same savings to First Nations members who don't live on reserve but face similar financial circumstances, it is clear the deciding factor was geography, rather than poverty or treaty status, the judges said.

Manitoba Hydro temporarily cutting 200 jobs, many of them front-line workers
"In my view, the PUB erred in law when it created an on-reserve class based solely on a geographic region of the province in which customers are located," the decision read.

While Manitoba Hydro objected to the PUB's order in 2018, it still devoted money to create the new customer class.

Spokesperson Bruce Owen said the utility is still studying the impact of the court's decision, but it appreciates the ruling.  

"We all recognize that many people on First Nations have challenges, but our argument was solely on whether or not the PUB had the authority to create a special rate class based on where people live."

Owen added that Hydro recognizes electricity rates can be a hardship on individuals facing poverty. He said those considerations are part of the discussions the corporation has with the utilities board.

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European Energy Crisis shocks markets as Russia slashes gas via Nord Stream, spiking prices and triggering rationing, LNG imports, storage shortfalls, and emergency measures to secure energy security before a harsh winter.

Key Points

Europe-wide gas shock from reduced Russian flows drives price spikes, rationing risk, LNG reliance, and emergency action.

✅ Nord Stream cuts deepen supply insecurity and storage gaps

✅ LNG imports rise but terminal capacity and shipping are tight

✅ Policy tools: rationing, subsidies, demand response, coal restarts

As Russian gas cutoffs upend European energy security, the continent is struggling to cope with what experts say is one of its worst-ever energy crises—and it could still get much worse. 

For months, European leaders have been haunted by the prospect of losing Russia’s natural gas supply, which accounts for some 40 percent of European imports and has been a crucial energy lifeline for the continent. That nightmare is now becoming a painful reality as Moscow slashes its flows in retaliation for Europe’s support for Ukraine, dramatically increasing energy prices and forcing many countries to resort to emergency plans, including emergency measures to limit electricity prices in some cases, and as backup energy suppliers such as Norway and North Africa are failing to step up.

“This is the most extreme energy crisis that has ever occurred in Europe,” said Alex Munton, an expert on global gas markets at Rapidan Energy Group, a consultancy. “Europe [is] looking at the very real prospect of not having sufficient gas when it’s most needed, which is during the coldest part of the year.”

“Prices have shot through the roof,” added Munton, who noted that European natural gas prices—nearly $50 per MMBTu—have eclipsed U.S. price rises by nearly tenfold, and that rolling back electricity prices is tougher than it appears in the current market. “That is an extraordinarily high price to be paying for natural gas, and really there is no immediate way out from here.” 

Many officials and energy experts worry that the crisis will only deepen after Nord Stream 1, the largest gas pipeline from Russia to Europe, is taken down for scheduled maintenance this week. Although the pipeline is supposed to be under repair for only 10 days, the Kremlin’s history of energy blackmail and weaponization has stoked fears that Moscow won’t turn it back on—leaving heavily reliant European countries in the lurch. (Russia’s second pipeline to Germany, Nord Stream 2, was killed in February as Russian President Vladimir Putin prepared to invade Ukraine, leaving Nord Stream 1 as the biggest direct gas link between Russia and Europe’s biggest economy.)

“Everything is possible. Everything can happen,” German economy minister Robert Habeck told Deutschlandfunk on Saturday. “It could be that the gas flows again, maybe more than before. It can also be the case that nothing comes.”

That would spell trouble for the upcoming winter, when demand for energy surges and having sufficient natural gas is necessary for heating. European countries typically rely on the summer months to refill their gas storage facilities. And at a time of war, when the continent’s future gas supply is uncertain, having that energy cushion is especially crucial.

If Russia’s prolonged disruptions continue, experts warn of a difficult winter: one of potential rationing, industrial shutdowns, and even massive economic dislocation. British officials, who just a few months ago warned of soaring power bills for consumers, are now warning of even worse, despite a brief fall to pre-Ukraine war levels in gas prices earlier in the year.

Europe could face a “winter of discontent,” said Helima Croft, a managing director at RBC Capital Markets. “Rationing, industrial shut-ins—all of that is looming.”

Unrest has already been brewing, with strikes erupting across the continent as households struggle under the pressures of spiraling costs of living and inflationary pressures. Some of this discontent has also had knock-on effects in the energy market. In Norway, the European Union’s biggest supplier of natural gas after Russia, mass strikes in the oil and gas industries last week forced companies to shutter production, sending further shockwaves throughout Europe.

European countries are at risk of descending into “very, very strong conflict and strife because there is no energy,” Frans Timmermans, the vice president of the European Commission, told the Guardian. “Putin is using all the means he has to create strife in our societies, so we have to brace ourselves for a very difficult period.”

The pain of the crisis, however, is perhaps being felt most clearly in Germany, which has been forced to turn to a number of energy-saving measures, including rationing heated water and closing swimming pools. To cope with the crunch, Berlin has already entered the second phase of its three-stage emergency gas plan; last week, it also moved to bail out its energy giants amid German utility troubles that have been financially slammed by Russian cutoffs. 

But it’s not just Germany. “This is happening all across Europe,” said Olga Khakova, an expert on European energy security at the Atlantic Council, who noted that France has also announced plans to nationalize the EDF power company as it buckles under mounting economic losses, and the EU outlines gas price cap strategies to temper volatility. “The challenging part is how much can these governments provide in support to their energy consumers, to these companies? And what is that breaking point?”

The situation has also complicated many countries’ climate goals, even as some call it a wake-up call to ditch fossil fuels for Europe. In late June, Germany, Italy, Austria, and the Netherlands announced they would restart old coal power plants as they grapple with shrinking supplies. 

The potential outcomes that European nations are grappling with reveal how this crisis is occurring on a scale that has only been seen in times of war, Munton said. In the worst-case scenario, “we’re talking about rationing gas supplies, and this is not something that Europe has had to contend with in any other time than the wartime,” he said. “That’s essentially where things have got to now. This is an energy war.”

They also underscore the long and painful battle that Europe will continue to face in weaning itself off Russian gas. Despite the continent’s eagerness to leave Moscow’s supply behind, experts say Europe will likely remain trapped in this spiraling crisis until it can develop the infrastructure for greater energy independence—and that could take years. U.S. gas, shipped by tanker, is one option, but that requires new terminals to receive the gas and U.S. energy impacts remain a factor for policymakers. New pipelines take even longer to build—and there isn’t a surfeit of eligible suppliers.

Until then, European leaders will continue to scramble to secure enough supplies—and can only hope for mild weather. The “worst-case scenario is people having to choose between eating and heating come winter,” Croft said. 

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