tag:blogger.com,1999:blog-7315386763198461000.post4455762426444242625..comments2023-09-11T00:19:16.089-07:00Comments on Just because: Both Low EROEI and Low Power Density is a Serious Problem - Solar PV Addition Anonymoushttp://www.blogger.com/profile/07222285661645557609noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-7315386763198461000.post-20311397819824299402015-01-20T16:25:44.449-08:002015-01-20T16:25:44.449-08:00Your claims about costs look wildly optimistic. He...Your claims about costs look wildly optimistic. Here is the 2014 ECOFYS report on European electricity costs and subsidies<br /><br />https://ec.europa.eu/energy/sites/ener/files/documents/20141013_subsidies_costs_eu_energy.pdf<br /><br />Median LCOE of on-shore wind is about 80 EUR/MWh. Nuclear comes in at around 90-95 EUR/MWh. However as has been repeatedly pointed out LCOE is not a full measure of costs. Intermittency causes extra system level costs.<br /><br />All other renewables (except hydro) are more expensive than nuclear. Unfortunately hard coal and gas (run at maximum achievable load factor) remain cheaper than anything except hydro.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7315386763198461000.post-45722649422717747242015-01-06T09:27:46.952-08:002015-01-06T09:27:46.952-08:00It isn't relevant to the universe what we beli...It isn't relevant to the universe what we believe, but it's very relevant to our behavioural. If you want me to support renewable you have to convince me. <br /><br />Sometimes need for evidence goes both ways. Bother 100% renewable is feasible, and 100% renewable isn't feasible, are positive statements that require evidence. In my articles I've provided you with some evidence that you haven't really addressed yet. <br /><br />Over the last 4 years read many different studies and reports by both sides, and I've become more an more convince that 100% renewable wont work. I'll read the green-x model as well. In turn why don't you read this study that compares nuclear versus renewable grid (and other) costs.<br /><br />http://www.oecd-nea.org/ndd/reports/2012/system-effects-exec-sum.pdfAnonymoushttps://www.blogger.com/profile/07222285661645557609noreply@blogger.comtag:blogger.com,1999:blog-7315386763198461000.post-80987976928716550492015-01-06T02:11:44.117-08:002015-01-06T02:11:44.117-08:00Nothing hidden, all accounted for.
The Czisch stud...Nothing hidden, all accounted for.<br />The Czisch study also takes into account financing besides storage.<br />http://www.euractiv.de/files/docs/czisch_bwea-1.pdf<br />and the study.<br />https://kobra.bibliothek.uni-kassel.de/bitstream/urn:nbn:de:hebis:34-200604119596/1/DissVersion0502.pdf<br />the link to the English translation on wikipedia is dead... <br />http://en.wikipedia.org/wiki/European_super_grid<br />You could asl Czisch for a copy.<br /><br />A new study based on the green-x model. <br />http://wua-wien.at/images/stories/publikationen/renewable-energy-versus-nuclear-power.pdf<br /><br /><br />Why would it be relevant what we believe?<br />This is physics.and economics. You need evidence to back up your believes.<br /><br /><br />Is there a complete study on a nuclear grid? I don't think so.heavyweatherhttps://www.blogger.com/profile/10834812282913122215noreply@blogger.comtag:blogger.com,1999:blog-7315386763198461000.post-31217539554506998622015-01-05T21:00:31.727-08:002015-01-05T21:00:31.727-08:00Research needs to continue for solar, wind, storag...Research needs to continue for solar, wind, storage and (especially) advanced nuclear. I could care less for the LWR which Alvin got fired for advocating against (in favor for MSR) because a Carlington (solar flare) event could render them meltdown prone.<br />If solar does continue its price decrease and if batteries continue their price decrease, and if wind continues its price decrease (via larger turbines?), then these will contribute to fossil free in areas where nuclear power is unwanted or unjustified cost wise.<br />For sure, we need to concentrate on the best reactor design, which is Transatomic's molten salt reactor that only requires 1.8% fissile for startup!fireofenergyhttps://www.blogger.com/profile/02197100366012949976noreply@blogger.comtag:blogger.com,1999:blog-7315386763198461000.post-22925365692583734902015-01-05T18:24:54.101-08:002015-01-05T18:24:54.101-08:00Did the studies you site take energy storage, ener...Did the studies you site take energy storage, energy needed for a supper grid and other necessary energy inputs into account? If they don't they are incomplete. My main criticism of EROEI is that it is often incomplete and overstated as a consequence. I'll read your studies if you link to them someplace that doesn't have a pay wall. I don't believe nuclear is more expensive then renewable, and in nuclear is to expensive to do I wont start supporting renewable because I don't think they can work. I'd just give up all hope I have for the future. At any rate I wrote another post to respond to your comment.<br /><br />http://ratdog-justbecause.blogspot.com/2015/01/low-eroei-and-low-power-density-is_5.html<br /><br />Also, please read these two as well. <br /><br />http://ratdog-justbecause.blogspot.com/2014/01/the-hidden-costs-of-wind-and-solar-part.html<br /><br />http://ratdog-justbecause.blogspot.com/2013/11/the-hidden-costs-of-wind-and-solar-part.html<br />Anonymoushttps://www.blogger.com/profile/07222285661645557609noreply@blogger.comtag:blogger.com,1999:blog-7315386763198461000.post-26530216935881882015-01-05T11:42:33.930-08:002015-01-05T11:42:33.930-08:00You leave out the obvious. Nuclear is too expensiv...You leave out the obvious. Nuclear is too expensive. That's why half of Europe is phasing out while the other half is forced to do so.<br /><br />Leaves us with the obvious. We take all power sources in account, leave out fossil fuels...keep the nuclear option in the basket for a moment.<br />Then we do an hour by hour real world study. This has been done 10 years ago (renewables got cheaper till than). We end up with a paneuropean supergrid, 80% wind and 20% other renewables. 4.65€c/kWh (wind is even cheaper nowadays.).<br />PV only the installed capacity and what gets installed because it is cheaper behind the meter. No additional storage needed. No additional hydro needed.<br />All financing accounted for.<br /><br />Read the study by Gregor Czisch. <br /><br />The KiteGen is also ready in a few month. It's Stem version got an EROEI of 150 while the Carousell configuration will boost that to 1400.<br />Not that EROEI matters with technology that easily gets past 10.<br />PV is actually around 6-30 month payback time depending on location and technology. Take 50 years runtime and do the math.<br /><br />Why would you limit your 100% one source scenario to PV anyways?<br />And remember that technology is no finite fuel source. <br /><br />One more. <br /><br />http://bountifulenergy.blogspot.co.at/2010/09/eroi-doesnt-matter.html?m=1<br /><br /><br />heavyweatherhttps://www.blogger.com/profile/10834812282913122215noreply@blogger.com