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Oorspronkelijk geplaatst door brother paul
die grafiek is al een tijdje oud
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Euh van juli 2019.
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je moet gewoon logisch redeneren,er zit enkele fouten in: als PV CO2 vrij H2 maakt, kan die elektriciteit voor compressie van H2 ook CO2 vrij zijn, en de is transport van H2 ook CO2 vrij... Dus in feite is PVto BEV of PVtoH2toEV identieke oplossing met dat verschil dat H2 conversieverleizen heeft bij productie en bij opslag en bij fuelcell
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Daar zitten geen fouten in, toch niet bij Hoekstra.
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als PV goedkoop elektr maakt zijn er overschotten...
die overschotten moet je opslaan in buffers
ofwel batterij
ofwel H2
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En H2 is er niet, batterijen wel.
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als je H2 reserves aanelgt zijn die voor in de winter en de zonvrije periodes
dus H2 ga je sowieso nodig hebben
en die H2 reserves gaan bestaan... het is dus geen kwestie van het kost meer of minder
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Toch wel alle regeringen laten megaparks met batterijen aanleggen van Californië de wereld rond tot Australië.
Elk jaar minstens een verdubbeling, bronnen:
https://en.wikipedia.org/wiki/Batter..._power_station
https://de.wikipedia.org/wiki/Batter...icherkraftwerk
versus H2-productie, lol:
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https://en.wikipedia.org/wiki/Hydrogen_economy
As of 2004 and 2016, 96% of global hydrogen production is from fossil fuels[23] (48% from natural gas, 30% from oil, and 18% from coal); water electrolysis accounts for only 4%.[24] The distribution of production reflects the effects of thermodynamic constraints on economic choices: of the four methods for obtaining hydrogen, partial combustion of natural gas in a NGCC (natural gas combined cycle) power plant offers the most efficient chemical pathway and the greatest off-take of usable heat energy. (needs reference)
The large market and sharply rising prices in fossil fuels have also stimulated great interest in alternate, cheaper means of hydrogen production.[25][26] As of 2002, most hydrogen is produced on site and the cost is approximately $0.70/kg and, if not produced on site, the cost of liquid hydrogen is about $2.20/kg to $3.08/kg. 
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en FCEV hebben het puurste H2 nodig anders verslijten ze nog sneller:
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Fuel cells as alternative to internal combustion
Main articles: Fuel cell and Hydrogen vehicle
One of the main offerings of a hydrogen economy is that the fuel can replace the fossil fuel burned in internal combustion engines and turbines as the primary way to convert chemical energy into kinetic or electrical energy; hereby eliminating greenhouse gas emissions and pollution from that engine. Although hydrogen can be used in conventional internal combustion engines, fuel cells, being electrochemical, have a theoretical efficiency advantage over heat engines. Fuel cells are more expensive to produce than common internal combustion engines.
Some types of fuel cells work with hydrocarbon fuels,[83] while all can be operated on pure hydrogen. In the event that fuel cells become price-competitive with internal combustion engines and turbines, large gas-fired power plants could adopt this technology.
Hydrogen gas must be distinguished as "technical-grade" (five nines pure, 99.999%), which is suitable for applications such as fuel cells, and "commercial-grade", which has carbon- and sulfur-containing impurities, but which can be produced by the much cheaper steam-reformation process. Fuel cells require high-purity hydrogen because the impurities would quickly degrade the life of the fuel cell stack.
Much of the interest in the hydrogen economy concept is focused on the use of fuel cells to power hydrogen vehicles. Current hydrogen fuel cells suffer from a low power-to-weight ratio.[84] Fuel cells are much more efficient than internal combustion engines, and produce no harmful emissions. If a practical method of hydrogen storage is introduced, and fuel cells become cheaper, they can be economically viable to power hybrid fuel cell/battery vehicles, or purely fuel cell-driven ones. The economic viability of fuel cell powered vehicles will improve as the use of internal combustion engine vehicles becomes more expensive because of charges to cover the costs of their air pollution, through such measures as carbon taxes and low-emission zones.
Other fuel cell technologies based on the exchange of metal ions (e.g. zinc-air fuel cells) are typically more efficient at energy conversion than hydrogen fuel cells, but the widespread use of any electrical energy ? chemical energy ? electrical energy systems would necessitate the production of electricity.
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Uiteraard is H2 duurder dan elektr opslaan, omdat door hydrolyse er conversieverliezen zijn. Anderzijds is de gebruikte elektr goedkoper, omdat het overschot energie is die anders moet gedumpt worden. Dus veel duurder is het niet, en veel verschil zal het niet maken
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Banee die wordt helemaal niet gedumpt als je er EVs en Megapacks mee oplaadt. En exporteren kan je die stroom ook nog, Europees stroomnet.
Waarom denk je dat er HVDC leidingen ondergronds aangelegd worden?
Wanneer ga jij nu eens mee met de tijd.
Meer dan 1 GWh is gepland, dus het eerste Gigawatt park...:
https://www.theverge.com/2019/7/29/2...rage-announced