Other questions in Energy Storage

• While hydrogen is touted as the swiss army knife of a future low carbon world, recent research has indicated that even green hydrogen could potentially result in higher global warming. How is this possible, according to the research?
• The US company Plug Power uses what type of green energy to power its electrolyzers to make green hydrogen in its Rochester, New York plant?
• The US hydrogen tax credits — unveiled in last year’s Inflation Reduction Act — would pay producers up to how much through tax credits per kilogram of green H2?
• The cost of Li-ion battery (packs) is about $200/kWh mid 2022. How much was it a decade ago?
• Which of the following is a firm (24x7) source of renewable energy?
• Which of the following concepts is the storage company Energy Vault using?
• Which of the following is not a phase change material in the context of energy storage?
• For how long can compressed air storage store energy?
• Metal air batteries have energy densities. But what is their main drawback in the context of their use in mobility?
• Which of the Li-ion chemistries is supposed to be most suited for fast charging?
• While electrolysis is one way to generate hydrogen from renewable sources, the other is hydrogen production from biomass. Which of the following pathways represents a viable one for hydrogen from biomass?
• Pumped hydro storage is hardly spoken about. But there’s a significant amount worldwide. How much?
• For a round trip (charge-discharge cycle), a lead acid battery can lose up to 25% of energy. How much is the round trip energy loss for a Li-ion battery?

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