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Britain today generating 90%+ of electricity from renewables

grid.iamkate.com

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Re: Britain today generating 90%+ of electricity from renewables

#91

These titles are misleading, they always omit the rest of the grid and the final carbon footprint. In March, the UK emitted 161g CO2/kWh. France did 6 times less CO2/kWh with 2x less renewables ! https://app.electricitymaps.com/map/zone/FR/12mo/monthly

France has much more nuclear. You can argue that is better but even if you agree it would take decades to get there.

South Korea builds nuclear power plants in five years.

Re: Britain today generating 90%+ of electricity from renewables

#92

> Britain paying highest electricity prices in the world for second year running > Ed Miliband’s net zero targets are facing fresh scrutiny after Britain was found to be paying the highest electricity prices in the developed world. > New data published on Tuesday showed the price paid by UK industry for power was 63pc higher than in France and 27pc higher than in Germany. > Britain is also the second-most expensive c…

Footing the technology development bills as a developed country should. Britain owes the world a lot in terms of fossil fuel contamination too.

Re: Britain today generating 90%+ of electricity from renewables

#95
post #37

Earlier quoted context omitted.

Electricity pricing in the UK is dictated largely by the price of Gas. This is a good video that goes into it: https://www.youtube.com/watch?v=IEnFmrgEbWo

Gas is the yang to winds yin. What other dispatchable power source is there that Britain could use? Whatever the dispatchable power source, it would have to last weeks at a time in the coldest months of the year.

I know less about the UK's electrical grid, but at least in Germany, if renewables plus batteries are enough to cover electricity needs for normal day-to-day weather, there is more than enough biogas production in the country to save and store that biogas for the weeks-at-a-time periods where renewable shortfalls happen and batteries won't be enough to cover it.

On any given day Germany generates 7-8% of its electricity from biogas, which means that if instead of burning that gas each day for electricity, we stored it in our network of gas reservoirs, then every 13 days of the year that we don't dip into those reserves, that's a full day of electricity generation in gas that's stored.

____

Even if this is done with fossil-gas instead of biogas though, simply having enough renewables + batteries to cut gas out of day-to-day electrical generation, and using it only for backup would be enough to drastically lower prices for the majority of the year.

Re: Britain today generating 90%+ of electricity from renewables

#96

Earlier quoted context omitted.

The study you have linked is completely wrong. There is no international market for gas because export/import is physically complex. This is why gas is priced very differently despite it being chemically similar (unlike oil). Anyone who says anything different should be immediately disregarded as someone who should not have an opinion. This is technically true for oil but there are two other factors. One, importing o…

> paying huge amounts of carbon to import from the Middle East is a good idea You are wrong here. UK oil has a very high carbon footprint. British North Sea oil is sour (high in sulphur). It is the "wrong" type of oil for UK refineries. So it gets sent to other countries around the world for refining. UK oil is viscous, waxy, crude which needs to be heated to pipe it. This means it takes a lot of energy to pipe (hell…

So why not refine it in the UK?

Re: Britain today generating 90%+ of electricity from renewables

#97
post #37

Earlier quoted context omitted.

Gas is the yang to winds yin. What other dispatchable power source is there that Britain could use? Whatever the dispatchable power source, it would have to last weeks at a time in the coldest months of the year.

The issue is that if my electricity I am using now is 99% renewable and 1% gas then I am paying as if 100% is gas. That is why prices are so high. The video goes into much better detail but the keyword if you want to search yourself is "marginal cost pricing. You can still have dispatchable gas without this pricing structure.

You can have dispatchable gas without that pricing structure, but having a grid without that pricing structure can't really function without major nationalization of power generation.

Marginal pricing is one of those things that at first sounds crazy, but when you delve into the topic, it's the only sensible way to have market pricing on electricity generation. The only real alternative would be a fully nationalized grid where the government buys up all the dispatachable power sources.

Re: Britain today generating 90%+ of electricity from renewables

#98
post #8

Earlier quoted context omitted.

I've read this before and I don't understand how this doesn't become/is untenable. Doesn't this mean that solar/wind are insanely lucrative? Also, this would mean that in order to really bring the price down, gas needs to be taken out as a source. But gas is typically the source that balances the grid because its output can be changed quickly. So price wise, you might get a drop but you would lose your ability to rea…

Yes, and I think that’s actually intentional, they’re rewarding renewables way over the odds without needing to give politically controversial benefits. The rewards are just an inherent result of the existing system. This is why renewables are growing rapidly in the uk. Of course we’ll need a way to resolve fluctuations both rapid and slower. Rapid fluctuations are handled by pumped hydro and increasingly by batterie…

The irony is that your comment should be entirely inverted. Renewables are not rewarded way over the odds - in fact the ruling party banned onshore wind entirely and i remember them banning at least one offshore wind farm. Luckily it is very cheap to build.

Now Hinkley Point C is another story. It's a hugely expensive boondoggle which is taking decades to construct at enormous cost and the reward at the end is that they are rewarded with a strike price that is 3x that of solar and wind. That is an obsecene subsidy forced on to customers for a power source that cant even do load following and doesnt help with fluctuations in supply and demand.

The slow fluctuations on cold, windless nights or when nuke plants are down for unplanned maintenance are going to be managed with gas.

Maybe one day it'll be gas synthesized with electricity from solar+wind overproduction on a day like today. The roundtrip is expensive, but will still be cheaper than nuclear power on a windy, summer day.

Re: Britain today generating 90%+ of electricity from renewables

#99
post #84

Earlier quoted context omitted.

Yes. But these things can be orthogonal. Or actually brcause gas is expensive. https://www.bbc.com/news/articles/crkep1vx3mro The price for wholesale electricity is set by a bidding process, with each generating company saying what it would be willing to accept to produce a unit of electricity. Once built, the cost of generating power from renewables is very low, so these typically come in with the cheapest bid. Nucl…

They aren't orthogonal - the reason that gas is being used is because renewable can't reliably power the grid! If you look at something like https://grid.iamkate.com/ you can see that in the last 24 hours the gas peak is when the wind dies down and the sun isn't shining, around 6-8pm. Happens to be a real price peak at that time. This isn't some weird and unexpected outcome, we've had at least a decade of evidence wi…

Seems like a very good case to get storage and power backup in people's homes. Industrial users could install their own gas fired generators. Residential consumers could have simple battery based backup, or even a generator which would double for helping during powerouts.

Re: Britain today generating 90%+ of electricity from renewables

#100
post #5

Earlier quoted context omitted.

California is a great example; highest electricity prices in the US (not counting Hawaii, which makes sense) despite significant hydro and fantastic solar capacity. In the last few years California runs 100% renewable on many days (and growing) every year. Economics 101: prices are not set by what goods cost to create + markup. Prices are set by how much people are willing to pay.

Why is it "people are willing to pay" and not "corporations are brazen enough to charge"? These utilities are necessities and relatively few people have access to cheaper alternatives to them.

Because PG&E is a for-profit company. They are supposed to charge what the market will bear.
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