Is Bitcoin Mining Bad for the Environment?

First of all, if you’re actually reading this instead of just reacting to the title, you’re already in a tiny minority. Most people will only ever see “Bitcoin mining” and instantly fall back on a pre-loaded opinion they picked up from a headline, a friend, or a tweet.

You might also have heard lines like, “Well of course she says that, she’s a Bitcoiner so her opinion is biased.” That sounds clever until you apply it anywhere else. Saying a Bitcoiner is automatically wrong about Bitcoin mining is a bit like saying, “He’s a medical doctor, so his opinion on medicine is biased,” or, “She’s an electrician, so you can’t trust her view on wiring a house.” Expertise and skin in the game don’t magically turn facts into propaganda.

This guide isn’t here to shout you down or “win” an argument. The goal is to open your mind a little and walk through what Bitcoin mining actually does today, using information that is recent, specific, and grounded in how modern energy grids work — not just scary comparisons from 2018 about “Bitcoin using more power than country X.”

Why most people never get past the headline

For years, the story has been simple: “Bitcoin uses more electricity than [insert country name].” It’s catchy, visual, and a perfect outrage hook. You don’t even have to read the article to feel strongly about it. And that’s exactly what happens.

The problem is that “how much energy” by itself is an almost useless question. What really matters is what type of energy is being used, when it’s being used, and whether that energy would have been wasted anyway. Modern grids are messy, seasonal and local. They constantly juggle peaks, troughs and bottlenecks. A kilowatt-hour at 3 p.m. in a city is very different to a kilowatt-hour at 3 a.m. next to a remote hydro dam with no factory or city to serve.

So instead of treating Bitcoin as a cartoon villain or a perfect hero, let’s zoom in on where miners actually operate, what energy they’re using, and why so many of the loudest “Bitcoin is boiling the oceans” claims are based on assumptions that no longer match reality.

What Bitcoin mining actually does (in plain English)

Bitcoin mining is simply a way of securing the Bitcoin network using real-world energy. Miners run specialised computers that race to solve cryptographic puzzles. The first one to solve the puzzle earns the right to add a block of transactions to the blockchain and collect the block reward. That race is what we call proof of work.

In everyday terms, proof of work is like millions of digital padlocks being checked constantly. All of that checking takes electricity, but it gives Bitcoin its key properties: nobody can fake history, nobody can rewrite your savings, and nobody can turn the system off for political reasons. The energy is not a side effect — it’s the anchor that ties a digital money system to the physical world.

The real question, then, isn’t “Does Bitcoin use energy?” (it obviously does) but rather what kind of energy, where, and what do we get in return for it?

Outdated studies and why they mislead

Many of the most-quoted studies and media graphics about Bitcoin’s energy use are built on assumptions that made sense five or ten years ago but don’t match today’s mining landscape. A few common issues:

• Static grid assumptions: Early models treated Bitcoin as if it used the average global energy mix — lots of coal, some gas, some renewables — rather than looking at where miners actually move to.
• Ignoring incentives: Miners are profit-driven. That pushes them toward the cheapest energy in the world, which usually means either very abundant renewables or waste that nobody else can use.
• Snapshot thinking: Charts that say “Bitcoin uses more energy than country X” treat the network as a fixed thing. In reality, hardware gets more efficient, regions change policy, miners relocate, and the energy mix shifts over time.
• No account of wasted energy: Many studies assume that if Bitcoin didn’t exist, the underlying energy would simply be saved. In practice, a large share comes from power that would have been curtailed, flared, or never generated in the first place.

More recent research paints a very different picture. Studies from Cambridge and other independent groups now estimate that over half of Bitcoin mining is powered by low-carbon or renewable energy, with that share rising as miners chase cheap, clean power and are pushed by both economics and regulation away from coal-heavy regions.

None of this means Bitcoin mining is impact-free. But it does mean that headlines built on data from 2017 or 2019 aren’t a great guide to what the network is doing in 2026.

What kind of energy miners use now

When you zoom in on where miners actually set up shop, a pattern emerges:

• Hydropower-rich regions with more water than demand (parts of Norway, Canada, South America).
• Geothermal clusters, like Kenya’s Rift Valley, where steam power is abundant but transmission lines and local industry are limited.
• Wind and solar overbuild in places such as Texas, where there are times of day when the grid literally can’t use all the power being generated.
• Flared or stranded gas, where companies like Crusoe move miners next to oilfields to turn methane that would have been burned into electricity and hashes instead.

Miners are drawn to these places not because they’re trying to be environmental heroes, but because this power is cheap and available 24/7 or at very predictable times. The climate benefit is a side-effect of cold, hard economics.

The end result is that Bitcoin mining is steadily becoming one of the most renewables-heavy large-scale computing industries on earth. That doesn’t make it perfect, but it does make the “pure climate villain” story a lot harder to defend.

Wasted hydro & stranded power: Kenya, Norway and more

To really understand why Bitcoin mining can be good for the environment, you need to look at wasted energy. Around the world, grids routinely throw away energy because they can’t move it or sell it at the right time.

A simple example is hydropower. In wet years, some dams have to spill water without running it through turbines because there’s too much supply and not enough demand or transmission capacity. The same thing happens with wind and solar when there’s more generation than the grid can handle. That “extra” power doesn’t replace fossil fuels. It’s just lost.

Kenya is a great case study. The country is a geothermal powerhouse, with steam fields in places like Olkaria generating more electricity than the local grid can absorb at off-peak times. Rather than letting that clean energy go to waste, Bitcoin miners such as Gridless set up next to plants and mini-hydro sites and act as a flexible buyer of last resort. When local communities need more power, the miners dial back; when demand is low, they soak up the surplus and convert it into income that helps fund more grid connections.

In Norway, several mining facilities tap into abundant hydropower in remote regions where industrial demand is limited. Some even pipe waste heat into local district heating systems or use it to dry wood, reducing the need for separate heating fuels while monetising energy that would otherwise have been underused.

You see similar patterns elsewhere:

• In parts of Canada, miners sit near hydro dams in regions with huge seasonal overproduction.
• In Texas, miners plug into wind and solar-rich zones and shut off instantly when the grid is stressed, effectively acting as a shock absorber during heatwaves.
• In oil-producing regions, mobile miners connect directly to flared gas that would have been burned into the atmosphere, cutting methane emissions and earning revenue from what was previously a pure waste stream.

None of this means every miner everywhere behaves perfectly. But it does show why blanket statements like “Bitcoin just steals power from households” miss how modern mining actually works in many parts of the world.

Bitcoin mining as a flexible grid stabiliser

Another underappreciated trait of Bitcoin mining is that it’s an almost perfectly flexible industrial load. A miner can ramp down in seconds and ramp back up just as quickly. Compare that with aluminium smelters, data centres or factories, which hate being turned off and on.

That flexibility is incredibly valuable to grid operators. In places like Texas, miners participate in demand response programs where they are paid to switch off during peak stress. From the outside it looks like “Bitcoin miners are using too much power,” but from the operator’s perspective they’re a safety valve: a large, voluntary customer who disappears the moment households need the capacity.

In mini-grids across Africa and other emerging markets, miners play a similar role on a smaller scale. They smooth out the difference between daytime and night-time demand, make renewable projects financially viable, and help utilities plan future investments with a stable baseline buyer.

So… is Bitcoin mining “worth” the energy?

At this point you might still feel uneasy. Even if most energy is clean or would have been wasted, isn’t it still “too much” to spend on a digital asset?

That’s a fair question, and ultimately it’s a values question. Every serious system we rely on consumes energy: hospitals, search engines, banking networks, gold mining, refrigerated food supply chains. We don’t judge them purely on megawatt-hours; we judge them on what we get in return.

Bitcoin is trying to provide something specific: an open, neutral, hard-to-confiscate money system that doesn’t depend on any one government or company. If you believe that kind of system is useful — especially in countries with capital controls, high inflation, or weak property rights — then the energy securing it starts to look less like waste and more like the electricity that secures everything else we care about.

None of this is a command to agree. The point of this guide is not to tell you what to think, but to give you enough up-to-date context to think about Bitcoin mining in a more informed way than “I saw a chart on social media once.”

If you’re still early in your learning journey and want a broader view of how Bitcoin fits into money and markets, you might enjoy exploring our Bitcoin Guides hub next.

Wrap-up: how to think about Bitcoin and the environment

Let’s summarise the key points so you can walk away with a clearer mental model:

• Bitcoin mining absolutely uses energy, and that’s by design. The energy is what makes Bitcoin hard to cheat and hard to shut down.
• Many of the scariest statistics about Bitcoin and the climate are based on old, broad-brush assumptions that don’t reflect today’s reality.
• Modern miners tend to cluster around cheap, abundant and often wasted energy — hydro spill, geothermal curtailment, wind and solar overbuild, or flared gas.
• In places like Kenya, Norway and Texas, miners increasingly act as flexible buyers of last resort, stabilising grids and helping new renewable projects pencil out financially.
• The real debate isn’t whether Bitcoin uses energy, but whether the type of energy it uses and the benefits it offers to people are worth that cost.

You don’t have to walk away from this article as a fan of Bitcoin. But if you’ve made it this far, you’ve already done something most people never do: you looked beyond the headline and into how the system actually works. That alone puts you in a much better position to form your own view — whether you end up owning Bitcoin or not.

Mini-FAQ

This guide is for general education only and is not financial, tax or investment advice. Bitcoin and other cryptocurrencies are volatile and you should always do your own research, consider your risk tolerance, and speak with a qualified professional before making major financial decisions.