Antitoxic9087
@Antitoxic9087@slrpnk.net
- Comment on In 4 years, US power grid increased battery storage to the equivalent of 20 nuclear reactors | The Optimist Daily 3 months ago:
Although renewable + bess still wins according to most recent studies on that matter, cost comparison between nuke and renewable / Bess is not that useful. Assumptions on the longevity of nuke reactors, for example, helps little if the fleet of reactors end up constantly break down and require repairment as in France and Belgium. So lcoe of nuke over long time span is highly uncertain and contingent. Plus the positive feedback loop of learning curve, evident in renewable and Bess, is not so visible for nuclear.
What is more useful for sake of current policy discussion is deployment rate and scalability, which renewable plus batteries clearly wins.
- Comment on In the California desert, residents are struggling with the influx of massive solar projects 3 months ago:
solar panels in a desert seems relative low impact infrastructure
- Comment on China constructs world's first dual-tower solar thermal plant — and it will help generate nearly 2 billion kWh annually 5 months ago:
just thinking: why stop at 2? I suppose a grid of heat towers with mirrors beneath would provide maximum utilization of the solar radiation
- Comment on Lazard Levelized Cost of Energy Comparison 2024 6 months ago:
its the marginal cost of running existing plants, mainly from fuel cost.
- Comment on Nuclear too slow to replace coal, and baseload “simply can’t compete” with wind and solar, AEMO boss says 6 months ago:
The political context here is that the Australian conservatives (the liberal coalition I suppose), who have been vividly against climate policies and renewables, are now trying to propose nuke projects on coal power plant sites. Many of these coal power plants are soon to be phased out with renewables plus storage in the queue for the freed transmission capacity, so there isn’t really any advantages these sites can offer for nuke projects decades from now.
Of course, any realistic realization of nukes in Australia would be no earlier than 2040 (some even suggest 2050), by then they could already get 100% renewable in energy system easily.
- Comment on Lazard Levelized Cost of Energy Comparison 2024 7 months ago:
just a reminder if they put the orange diamonds for wind and solar it would probably lie somewhere near zero $/MWh
- Comment on Good news for 100% clean energy. Geothermal has finally arrived 7 months ago:
It is highly dependent of the local geological conditions. Convection-based geothermal plants (those with hot spring flowing around) probably have less constraints on heat extraction limit. Conduction-based geothermal plants will face more problems.
In some shallow geothermal use case the ground is used as seasonal heat storage so heat renewable rate is not an issue.
- Comment on Why crypto could be green power's unlikely new best friend 10 months ago:
Why don’t we store it and use it another time?
Of course, if you are doing the computation for some vital services, it make sense to do VRE availability based demand side management as much as possible. But doing computation for some proof of work algorithm is basically computing for the sake of computing more, and I just cannot grasp the rationale behind it.
- Comment on Hinkley Point C delay deals blow to UK energy strategy 1 year ago:
And the article doesn’t even mention renewables once… Maybe that’s how you actually bring down electricity prices and emissions
- Comment on Chart: The world is building renewable energy faster than ever before 1 year ago:
To triple the RE capacity by 2030, we need to double the current speed, or linearly increase the deployment speed until it reach 2TW/ year by 2030.
Ambitious but totally feasible.
- Comment on Cooperativism and green energy 1 year ago:
As for the ownership of wind energy, there were some famous cases of community owned wind projects in Germany and in Denmark, e.g. Wind Park Wiemersdorf and Middelgrunden (I just checked their website and they are still running quite well after more than 2 decades). The continual increase of single unit size has made community ownership less and less possible nowadays in these countries.
There are still some cases coming out, such as the proposal of a community windpark in Heidelburg and the one in NRW.
Recently other mechanisms are being proposed. In NRW a “citizen energy law” is being discussed so local residents near windparks might get discount in electricity or direct payments.
- Comment on Cooperativism and green energy 1 year ago:
What surprised me was how little solar had been in Portugal and Spain. Most renewable growth had been wind. But that has been drastically changing in very recent years. This is a good thing in terms of citizen participation and cooperative ownerships, since solar is the easiest technology for ordinary people to possess and fully control. In terms of tech level, unless compared with diy small hydro or wind turbine, it is also the simplest among all the options.
- Comment on Nuclear energy is more expensive than renewables, CSIRO report finds 1 year ago:
This is basically common knowledge now. CSIRO report pointed to similar conclusions for several years, at least since 2021 when I started to notice.
What is relevant to real life (since Australia probably never will get nukes) is that even assignning system costs only onto VRE, they are still almost the same LCoE in a 90% VRE system. This is again consistent with previous reports.
After Australia pass 100% VRE, exporting green hydrogen in the regional market will probably handle the last remaining flexibility needs. Exporting electricity directly to SE Asia is less likely but still a possibility.
- Comment on kbin instance running on green energy? 1 year ago:
Looking forward to it!
- Comment on kbin instance running on green energy? 1 year ago:
Just out of curiosity: is there currently anyway to prove the use of renewable electricity to the public without revealing sensitivity personal data?
- Submitted 1 year ago to fixing@slrpnk.net | 5 comments
- Submitted 1 year ago to energy@slrpnk.net | 0 comments
- Comment on The momentum of the solar energy transition 1 year ago:
I see from this paper that compared with Way et al. (2022), they introduced “learning in operational costs, rather than only in CAPEX”, which benefits solar and offshore wind, also “solar power and wind energy see a higher learning rate than previous model versions”. So very surprised wind not gaining more.
It is difficult to compare the results of Way et al. (2022) and this paper directly since in the former final and usable energy were reported and here it is electricity that is reported in the text, although from their relative share (both across time and wind / solar at a given time), the conditions for solar is probably more favorable and wind growth is more constrained in this paper.
- Comment on The momentum of the solar energy transition 1 year ago:
I mean I understand this is modeling a pathway with no further climate policy, but still wind being second cheapest option should gain more share.
- Comment on The momentum of the solar energy transition 1 year ago:
Seems too conservative projection for wind energy, but yeah most experts agree solar will be dominant.
- Comment on Ireland: Wind power outstrips electricity demand for the first time 1 year ago:
Inflexibility of conventional power plants is one issue, but for Ireland things has developed to a point I suspect it is no longer the main operational constraint on the grid.
Ireland is an island grid and needs to keep system inertia on its own. This service is traditionally provided by conventional power plants in GW scale grids, but soon when synchronous condenser and inverter-based solutions become norm, there is no reason why 100% instantaneous wind + solar is not possible as shown already in various microgrids.
- Submitted 1 year ago to energy@slrpnk.net | 0 comments
