Here is a short five minute video to make you think about how we can power the world with renewables. Here is the link: How Much Energy Will the World Need? - YouTube
Here is a short five minute video to make you think about how we can power the world with renewables. Here is the link: How Much Energy Will the World Need? - YouTube
https://thesolutionsproject.org/what-we-do/inspiring-action/why-clean-energy/#/map/countries/location/ALL
ReplyDeleteAccording to this study, the world will have a 57% energy savings by going to all Renewable Energy. Fossil fuels are quite inefficent. For example, my Tesla Model S electric car is 4.5 times more efficent than its Mecerdes counterpart. Heat pumps can replace natural gas furnaces. Natural gas can never get above 100% efficency, while a heat pump can heat and cool at 4 times its electric input.
You have over-looked the main point made in the video, which is that renewables are simply not capable of supplying anywhere near enough energy to replace fossil fuels. Not now or not even by 2050. It's not about efficiency, it's about the quantity and the reliability.
ReplyDeleteI showed you a link to a study that says 100% is possible. I watched the whole video and you did not read the link I provided you.
DeleteI did look at the link and it did not address the problems shown in the video. In fact it said things that are simply not true, like the land required for wind and solar would be less than currently used, when just the opposite is true. It is obvious that they will require a huge amount more. The issue of mining for all the rare earth metals is not even mentioned in your link and this is crucial, as is dealing with all the waste at the end of life of all the solar panels and wind turbines. When the world will require vastly more energy in the future there is no way it can come from renewables. Nuclear is probably the oe that will be required more and more.
ReplyDeleteHave a look at this very persuasive talk by a committed environmentalist and see what he says about the shortcomings of solar and wind: Why Renewables Can't Save The World
All the talk of why Renewables can't save the world, they all don't talk about grid based storage. There are storage technologies now that can be installed for $20 per kw-hr. It's all coming fast on us. GB itself is moving forward dropping coal and increasing renewable energy.
DeleteYou did not talk about whether 100% RE is possible from your point of view. There are 181 papers written on this subject alone. One little professor in a video isn't proof that it can't be done. Models are created using weather and load demand are used.
ReplyDeletehttps://en.wikipedia.org/wiki/100%25_renewable_energy#Feasibility
Recent studies show that a global transition to 100% renewable energy across all sectors – power, heat, transport and desalination well before 2050 is feasible.[14][15][16] According to a review of the 181 peer-reviewed papers on 100% renewable energy that were published until 2018, "[t]he great majority of all publications highlights the technical feasibility and economic viability of 100% RE systems."[8] Existing technologies, including storage, are capable of generating a secure energy supply at every hour throughout the year. The sustainable energy system is more efficient and cost effective than the existing system.[17] The IPCC stated in their 2011 report that there is little that limits integrating renewable technologies for satisfying the total global energy demand.
There is no shortage of essential metals for renewable energy. It is the production of the metals in mining is where the issue is. The mining is needed to expand rapidly for meeting 1.5*C or 2.0*C.
ReplyDeleteI believe you are being overly optimistic in your claims. For example in your last statement you say "there is no shortage of essential metals....". However you also admit that "it is the production of the metals in mining is where the issue is". You are right, that is one big issue. As more and more of these metals are needed their cost will go up and up as deposits become harder to find. Of course that is also true of fossil fuels, though not at present - there are still plenty of reserves. We cannot know what new sources of energy may be discovered - possibly nuclear fusion on day. At present nuclear fission still looks a good choice for the base load. Wind and solar are just not reliable enough to do any more than a small part.
ReplyDeleteMining reserves are enough to build all the 100% RE system.
ReplyDeleteProduction of the mining reserves needs to pick up.
I have studies renewable energy for 30 years. Part of the metals needed is for storage. That is what makes Renewable Energy workable to 100%. I have shown this too you many times.
Russia has made the fossil fuel market quite untenable. Plus co2 is 90% of the reason we had interglacials and iceages. Staying on fossil fuels ruins the life system on earth over time. Financially fossil fuel energy is grossly expensive destroying the climate vs renewable energy preserving the living system.