I see this posted a lot as if this is an issue with capitalism. No, this is what happens when you have to deal with maintaining the power grid using capitalism as a tool.
Power generation needs to match consumption. Always constantly the power grid must be balanced. If you consume more than you can generate, you get a blackout. If you generate more than you use, something catches fire.
Renewables generate power on their own schedule. This is a problem that can be solved with storage. But storage is expensive and takes time to construct.
Negative prices are done to try and balance the load. Its not a problem, its an opportunity. If you want to do something that needs a lot of power, you can make money by consuming energy when more consumption is needed. And if you buy a utility scale battery, you can make money when both charging and discharging it if you schedule it right.
That’s not renewables being a problem, that’s just what happens when the engineering realities of the power grid come into contact with the economic system that is prevalent for now.
I see this posted a lot as if this is an issue with capitalism. No, this is what happens when you have to deal with maintaining the power grid using capitalism as a tool.
The framing of it as the problem being that the price is going down rather than that excess power is feeding into the grid is what makes it an issue with capitalism. The thing you should be questioning is why MIT Technology Review is talking about some consequence of the problem that only exists because of capitalism instead of talking about the problem itself.
And before you downvote/object with some knee-jerk reaction that I’m being pedantic, consider this alternative way of framing it:
The opportunity is that solar panels create lots of electricity in the middle of sunny days, frequently more than what’s currently required, so it is necessary to develop new flexible sources of demand so that the excess energy doesn’t damage the power grid.
they did talk about this many years ago. This is a very old screenshot that has been around the internet for probably a decade at a guess. You might notice the check mark because this was from a time that twitter actually vetted sources. There’s nothing wrong with a publication having bad takes on occasion. That does happen now and again.
The telling part is the fact that this one single tweet keeps being reposted repeatedly, with the reply as if this is a substantive criticism of capitalism.
Also, fwiw, you can curtail wind turbines incredibly quickly. They’re the quickest moving assets on an electrical grid typically. So you are using them to balance the grid quite often. You can just pitch the blades a bit and they slow or stop. it’s not really a tech problem, but a financial one like you said.
I’m not sure much about solar curtailment, other than the fact that they receive curtailment requests and comply quite quickly as well.
This is a problem that can be solved with storage. But storage is expensive and takes time to construct.
true. thing is, they’ve seen it coming for a decade, and knew it needed to happen. It shames me that we’re just now trying to pick up the storage side when we’ve had ample evidence the need was growing rapidly.
Just to be clear this can’t be solved with storage. Currently it can be but not permanently.
For ease of argument let’s say the grid runs 100% on solar with batteries that last a day. For 100% solar you need to build power for when demand is highest, winter, and supply is lowest also winter. Come summer demand is lowest and supply is highest. You can’t store all that energy in summer because you got fuck all to do with it.
It’s a really weird cost saving exercise but basically when supply is massively abundant it has to be wasted. No one is going to build that final battery that is only used for 1 day every 10 years.
Bringing it all together. In a 100% renewables grid with solar, wind, hydro and batteries a lot of electricity will be wasted and it will be the cheapest way to do it. Cheaper than now.
Quite a few people talk about this on youtube. Tony Seba and rethinkx is the best place to start in my opinion.
Then tell me why the mechanism to control production via the solar panels themselves hasn’t been implemented? I’ve seen several viable options, including covers that are manual or even automated and powered by the excess energy…
South Australia has run into this problem and implemented a solution.
When the solar exports in a section of the grid exceeds the local transformer’s limits, a signal is sent to all of the inverters in that section to limit the export rate. The same signal can be send to all solar inverters in South Australia if the entire grid has too much renewable energy.
This signal only limits the export to the grid, so the homeowner can always use their own solar power first. The permitted export is guaranteed to be between 1.5kW and 10kW per phase.
The was a minor oversight during implementation. Homeowners on wholesale pricing would often curtail or switch off their solar inverters if the prices went negative. If the grid operator sent a signal to reduce the export rate, it would override the homeowner’s command and force a 1.5kW export during negative pricing (costing the homeowner to export). No-one considered that anyone might not want to export solar all of the time.
I see this posted a lot as if this is an issue with capitalism. No, this is what happens when you have to deal with maintaining the power grid using capitalism as a tool.
Power generation needs to match consumption. Always constantly the power grid must be balanced. If you consume more than you can generate, you get a blackout. If you generate more than you use, something catches fire.
Renewables generate power on their own schedule. This is a problem that can be solved with storage. But storage is expensive and takes time to construct.
Negative prices are done to try and balance the load. Its not a problem, its an opportunity. If you want to do something that needs a lot of power, you can make money by consuming energy when more consumption is needed. And if you buy a utility scale battery, you can make money when both charging and discharging it if you schedule it right.
That’s not renewables being a problem, that’s just what happens when the engineering realities of the power grid come into contact with the economic system that is prevalent for now.
I can’t ragebait if you people are being logical 😒
The framing of it as the problem being that the price is going down rather than that excess power is feeding into the grid is what makes it an issue with capitalism. The thing you should be questioning is why MIT Technology Review is talking about some consequence of the problem that only exists because of capitalism instead of talking about the problem itself.
And before you downvote/object with some knee-jerk reaction that I’m being pedantic, consider this alternative way of framing it:
That’s pretty vastly different, isn’t it?
Not really. It’s like saying toast falls butter side down, vs toast falls non-buttered side up?
they did talk about this many years ago. This is a very old screenshot that has been around the internet for probably a decade at a guess. You might notice the check mark because this was from a time that twitter actually vetted sources. There’s nothing wrong with a publication having bad takes on occasion. That does happen now and again.
The telling part is the fact that this one single tweet keeps being reposted repeatedly, with the reply as if this is a substantive criticism of capitalism.
Also, fwiw, you can curtail wind turbines incredibly quickly. They’re the quickest moving assets on an electrical grid typically. So you are using them to balance the grid quite often. You can just pitch the blades a bit and they slow or stop. it’s not really a tech problem, but a financial one like you said.
I’m not sure much about solar curtailment, other than the fact that they receive curtailment requests and comply quite quickly as well.
Here in the EU, the DC-AC transformers are mandated to shut down if the grid frequency is out of bounds.
Nice comment! Thanks.
true. thing is, they’ve seen it coming for a decade, and knew it needed to happen. It shames me that we’re just now trying to pick up the storage side when we’ve had ample evidence the need was growing rapidly.
Just to be clear this can’t be solved with storage. Currently it can be but not permanently.
For ease of argument let’s say the grid runs 100% on solar with batteries that last a day. For 100% solar you need to build power for when demand is highest, winter, and supply is lowest also winter. Come summer demand is lowest and supply is highest. You can’t store all that energy in summer because you got fuck all to do with it.
It’s a really weird cost saving exercise but basically when supply is massively abundant it has to be wasted. No one is going to build that final battery that is only used for 1 day every 10 years.
Bringing it all together. In a 100% renewables grid with solar, wind, hydro and batteries a lot of electricity will be wasted and it will be the cheapest way to do it. Cheaper than now.
Quite a few people talk about this on youtube. Tony Seba and rethinkx is the best place to start in my opinion.
Hydo power can be used as storage, and can generate power on-demand. I’d recommend avoiding YouTube if you want reliable information.
Yes it can, I didn’t say otherwise. I’m not sure what your point is.
The electricity grid is about matching supply and demand. Hydro is not going to stop massively amount of wind and solar being wasted in a 100% is it?
Also most grids don’t have enough hydro storage or inertia to solve to problem by itself.
Then tell me why the mechanism to control production via the solar panels themselves hasn’t been implemented? I’ve seen several viable options, including covers that are manual or even automated and powered by the excess energy…
Why would you want people to tell you things that are untrue?
South Australia has run into this problem and implemented a solution.
When the solar exports in a section of the grid exceeds the local transformer’s limits, a signal is sent to all of the inverters in that section to limit the export rate. The same signal can be send to all solar inverters in South Australia if the entire grid has too much renewable energy.
This signal only limits the export to the grid, so the homeowner can always use their own solar power first. The permitted export is guaranteed to be between 1.5kW and 10kW per phase.
The was a minor oversight during implementation. Homeowners on wholesale pricing would often curtail or switch off their solar inverters if the prices went negative. If the grid operator sent a signal to reduce the export rate, it would override the homeowner’s command and force a 1.5kW export during negative pricing (costing the homeowner to export). No-one considered that anyone might not want to export solar all of the time.
Something catches fire lol what, as if they can’t just disconnect the solar cells if they run out of batteries
You can do. If you don’t that’s when you get the fire, or more likely a whole bunch of breakers flip and you are in a black start situation.