At 11:45, all the traffic lights at a Colombo intersection went dark. The power was out for 22 million people. The sun overhead was blazing.
The outage lasted six hours. Hospitals switched to backup generators, and the water supply soon failed too.
Sri Lanka has just over 3,000 megawatts of installed solar capacity, while daytime electricity use nationwide is only 2,000 to 2,500 megawatts. It has more installed capacity than it uses.
The first reaction for many was that the sun was too strong and had overwhelmed the grid. They had the general idea right, but got the details wrong.
The energy minister initially blamed a fault in a hydropower plant’s generator units; the utility denied it that same day. Later, he changed his account, saying a unit at the Norochcholai coal-fired power plant had tripped during maintenance, causing the grid frequency to fall.
At the moment the frequency dropped, the control room’s dashboard showed 1,137 megawatts from coal and hydropower. Another roughly 1,700 megawatts was connected to the grid, mostly rooftop solar, but it wasn’t being monitored in real time at all.
Invisible.
How do you dispatch a power source you can’t see?
Two-thirds of the power supply was invisible. All it took was a wobble in the small, controllable remainder for the invisible supply to drop out first. Sri Lanka’s rooftop inverters were using their factory-default settings: at the first sign of a disturbance, they immediately disconnect from the grid to protect themselves. Some 1,700 megawatts tripped off together within seconds, and the thermal plants simply couldn’t catch up. The last straw that brought the island down was the inverters’ default settings.
We’ve seen this play out before. On a sunny day in February 2025, it took more than six hours to restore power. The subsequent investigation concluded that grid inertia was too low. Including this outage, it has happened five times since 2020.
The more troubling part comes next. A report from the regulator in March this year laid it out plainly: rooftop solar lacked real-time monitoring and visibility. It recommended changing inverter protection settings so they would ride through those few seconds of grid disturbance instead of disconnecting. The report also explained why that hasn’t happened: older inverters don’t have the capability, and their firmware has gone unupdated.
It was all spelled out long ago. They still can’t fix it.
There’s a version of this setup in crypto, but in precisely the opposite direction.
Rooftop solar can’t be dispatched; it only feeds power into the grid. When the grid is under pressure, all it can do is publicly ask solar users to unplug. Mining farms, on the other hand, are a dispatchable load: tell them to shut down and they do. Their meters are online in real time, so grid operators can immediately see how many megawatts have been switched off. The grid needs two things that are in short supply: visibility and the ability to switch loads off.
At prices just above $80,000, miners’ electricity budgets are already tight. Raise the price of a kilowatt-hour by one fen, and a batch of machines has to shut down that very day. The same goes for chains like Ethereum Classic, where electricity prices determine whether miners switch on or off. When the machines stop, the change in hash rate is visible the next day.
Being able to shut down can itself make money. In demand-response markets, loads that agree to switch off immediately when the grid is strained can receive compensation. They still collect that payment. It isn’t tied to crypto prices.
At the other end of the spectrum are AI data centers. Once the cards are sold, they need to run 24 hours a day; they can’t afford power interruptions. The same grid can go from having too much electricity to not having enough. Both ends create problems. The server racks behind $NVDAB represent the grid’s most inflexible demand today.
I looked through reports from several outlets, and there’s still no clear account of what tripped first. The minister blamed coal power, the utility said transmission was unstable, and officials cited by AFP blamed excessive solar generation. None of the three explanations has been definitively confirmed.
The real takeaway is the structure. Any design that treats generating a little more electricity as the solution will eventually run into the same wall: grid operators can’t see what’s being generated.
Because the ability to switch off will always be worth more than the ability to generate.
Bitcoin is currently at $80,600, down 0.25% over 24 hours and just $600 away from $80,000. For assets like $BTC and $ETC , whose on-off switches are determined by electricity prices, the question now is whether they can still afford to shut down when power prices rise.
#比特币 #美股 #BinanceSquare
The outage lasted six hours. Hospitals switched to backup generators, and the water supply soon failed too.
Sri Lanka has just over 3,000 megawatts of installed solar capacity, while daytime electricity use nationwide is only 2,000 to 2,500 megawatts. It has more installed capacity than it uses.
The first reaction for many was that the sun was too strong and had overwhelmed the grid. They had the general idea right, but got the details wrong.
The energy minister initially blamed a fault in a hydropower plant’s generator units; the utility denied it that same day. Later, he changed his account, saying a unit at the Norochcholai coal-fired power plant had tripped during maintenance, causing the grid frequency to fall.
At the moment the frequency dropped, the control room’s dashboard showed 1,137 megawatts from coal and hydropower. Another roughly 1,700 megawatts was connected to the grid, mostly rooftop solar, but it wasn’t being monitored in real time at all.
Invisible.
How do you dispatch a power source you can’t see?
Two-thirds of the power supply was invisible. All it took was a wobble in the small, controllable remainder for the invisible supply to drop out first. Sri Lanka’s rooftop inverters were using their factory-default settings: at the first sign of a disturbance, they immediately disconnect from the grid to protect themselves. Some 1,700 megawatts tripped off together within seconds, and the thermal plants simply couldn’t catch up. The last straw that brought the island down was the inverters’ default settings.
We’ve seen this play out before. On a sunny day in February 2025, it took more than six hours to restore power. The subsequent investigation concluded that grid inertia was too low. Including this outage, it has happened five times since 2020.
The more troubling part comes next. A report from the regulator in March this year laid it out plainly: rooftop solar lacked real-time monitoring and visibility. It recommended changing inverter protection settings so they would ride through those few seconds of grid disturbance instead of disconnecting. The report also explained why that hasn’t happened: older inverters don’t have the capability, and their firmware has gone unupdated.
It was all spelled out long ago. They still can’t fix it.
There’s a version of this setup in crypto, but in precisely the opposite direction.
Rooftop solar can’t be dispatched; it only feeds power into the grid. When the grid is under pressure, all it can do is publicly ask solar users to unplug. Mining farms, on the other hand, are a dispatchable load: tell them to shut down and they do. Their meters are online in real time, so grid operators can immediately see how many megawatts have been switched off. The grid needs two things that are in short supply: visibility and the ability to switch loads off.
At prices just above $80,000, miners’ electricity budgets are already tight. Raise the price of a kilowatt-hour by one fen, and a batch of machines has to shut down that very day. The same goes for chains like Ethereum Classic, where electricity prices determine whether miners switch on or off. When the machines stop, the change in hash rate is visible the next day.
Being able to shut down can itself make money. In demand-response markets, loads that agree to switch off immediately when the grid is strained can receive compensation. They still collect that payment. It isn’t tied to crypto prices.
At the other end of the spectrum are AI data centers. Once the cards are sold, they need to run 24 hours a day; they can’t afford power interruptions. The same grid can go from having too much electricity to not having enough. Both ends create problems. The server racks behind $NVDAB represent the grid’s most inflexible demand today.
I looked through reports from several outlets, and there’s still no clear account of what tripped first. The minister blamed coal power, the utility said transmission was unstable, and officials cited by AFP blamed excessive solar generation. None of the three explanations has been definitively confirmed.
The real takeaway is the structure. Any design that treats generating a little more electricity as the solution will eventually run into the same wall: grid operators can’t see what’s being generated.
Because the ability to switch off will always be worth more than the ability to generate.
Bitcoin is currently at $80,600, down 0.25% over 24 hours and just $600 away from $80,000. For assets like $BTC and $ETC , whose on-off switches are determined by electricity prices, the question now is whether they can still afford to shut down when power prices rise.
#比特币 #美股 #BinanceSquare
