Jenny Chase

Jenny Chase

@solarchase.bsky.social

Solar analyst at BloombergNEF, goose keeper. Author of a book, "Solar Power Finance Without the Jargon". Opinions all my own.

17,806 Followers 1,256 Following 1,547 Posts Joined Oct 2023
2 days ago

Are you talking about Terrapower the legitimate advanced nuclear company, or Terraform Industries, the dream bubble making stupid claims? (There's also Terraform Power, a legitimate renewable energy developer in the US).

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3 days ago

I don't know. I hope so!

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3 days ago
Post image

#energysky

Fun battery dynamic in South Australia - dumping at cut rates so they can soak up negative prices the next day.

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3 days ago

It's not a criticism, big fan of the Energiewende, but Germany still has 40% of electricity to decarbonise and coined the terms "dunkelflaute" and also "hellbrise" (the situation pictured is a one-day hellbrise).

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3 days ago

It will come, and sooner than you think.

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3 days ago

Not every one, but I am generating 10x as much as I am using, and more than 1 in 10 houses have similar amounts of solar here. And the sun is shining on all of them.

This is why curtailment is rising across Europe, and we should plan for it to rise higher.

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3 days ago

Part of the answer is wind, and part of the answer is clean baseload, but the thing is that if you want clean baseload you're going to have to pay for it to exist, even when the solar + batteries is available for much less money... most of the time.

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3 days ago

This is why net zero is much harder than a 90% reduction in carbon emissions, and we're not sure how to do it. We should do the first 90%! But the challenges beyond that are significant and I wish I could explain this better.

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3 days ago

In all seriousness, industrial freezers are a decent source of demand response.

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3 days ago

Utility with time of use, highly locational pricing, then.

The technical / economic problem is *the* problem: if you have surplus power most of the time across a whole region, who pays for and how do you supply the periods when it isn't available?

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3 days ago

It's more run-of-river hydro really. The solar isn't useless, especially when the rivers are low it's good to turn down the turbines, but it's not really long-term storage. (Also means our power is super low carbon anyway).

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3 days ago

No, because of curtailment.

(Also I am in Switzerland).

See bsky.app/profile/jaap...

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3 days ago

Not in this region. Theoretically you can, but at the times of year when it's sitting nearly full all night, overall demand at night is not particularly high either.

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3 days ago

Most useful ways to consume a lot of energy are really capex-intensive, so you're not going to build them just to run on curtailed energy.

(The exception is cars, but people do tend to take their cars to work when it's sunny).

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3 days ago

It really frustrates me how hard this is to explain: solar generates all at the same time across a region! Batteries definitely do help (charts to come) but even a big battery (this one's 22kWh) will sit full most of spring-autumn and nearly empty all winter.

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3 days ago

It's 22kWh!

The problem is that however big it is, it's either going to sit full most of the summer, or nearly empty most of the winter.

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3 days ago

I am familiar with Solar Power Europe, yes....

Although I know there a subtleties, I think this is basically reinventing what we already have - utilities.

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3 days ago

As this chart shows, the problem is that my battery is full.

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3 days ago

My husband has the EV at work. Which tends to happen when you have an EV primarily for commuting.

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3 days ago

My neighbours also have solar panels, so it's useless to them, in fact the village is probably exporting (for which, I think, it pays a penalty). That is what people don't really get about solar - it's incredibly correlated.

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3 days ago

I'm wasting electricity. I only get paid about 4 Swiss cents per kWh for export.

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3 days ago

About 2 weeks ago! I am enjoying it a lot.

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3 days ago
A screenshot of the author's battery control app, Sonnen. It shows a battery 100% full, 3.4kW coming from the solar panels, the house consuming 0.3kW and 3.1kW going to the grid (with very little compensation).

Nooooo!

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3 days ago

It's an absolute headache for data collectors like me!

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4 days ago

Oh, yeah, loads more. For starters there is a lot of private diesel generators for households and businesses, especially in countries like Nigeria (estimate: 50GW private generators, about 15GW official grid). And some of those generators are being augmented / replaced with solar panels.

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4 days ago
Five geese eating spring cabbage from a hand.

They're really not very photogenic right now, and I haven't been spending enough time with them because I have a seven-month-old baby, but here's a somewhat old one.

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4 days ago

1. Geese
2. Watching my older kid play Pokemon Legends ZA
3. Batteries, like, seriously the government of Poland tried to tweak the rules of its last capacity auction to favour gas but about 2.5GW of gas and at least 2.5GW of batteries got contracted capacity payments. Big batteries gonna go nuts.

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4 days ago

Yeah that does make me like @octopus.energy tbh. I just have big "is this too good to be true" suspiciousness.

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6 days ago

Yeah, I'm just kind of suspicious of someone operating in a basically low margin, not high status space (energy) that is blowing a lot on advertising and also spreading its attention around a lot.

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6 days ago
Preview
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Most customers seem to have good experiences with Octopus the energy company, but the amount of advertising it does to the public in the UK (or London at least) is bizarre, and it also... will help you write your will?

octopuslegacy.com/will-writing

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