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I think it's actually brilliant to include battery together with energy generation. We know that when renewables become more than 20% of power generation, ever
by audunw 3y ago
I think it's actually brilliant to include battery together with energy generation.
We know that when renewables become more than 20% of power generation, every GW of renewables you add should be matched by a similar order of magnitude of batteries.
So if we start reporting this way, you can immediately see if we're building enough energy storage or not.
If you wanted to make the amount of power actually produced comparable you could reduce the amount of reported GW of bother renewables and batteries by 50% so they add up to a realistic capacity number.
But capacity numbers are never really comparable anyway. Perhaps best to report raw numbers and assume readers are smart enough to understand that for every source you need to know the significance of what a "GW" means.
Like, a "GW" of a gas peaker plant does not mean much regarding how much energy it produces. That "GW" is actually much more comparable to battery energy storage "GW"
- jacquesm 3y agoSure, but batteries simply don't generate power: you store an X number of KWh in them based on the rate of your charger and the rate-of-charge of your battery and you can discharge them using an inverter (which again, has a nameplate rating) limited by the rate of discharge of the batteries (usually pretty close to the charging rate so this tends to be symmetrical). You could have a massive storage with a relatively small inverter for discharge but a large charging capacity, the reverse and so on all highly dependent on the intended use case. So battery capacity doesn't say anything about the eventual grid capacity of the setup, for that you need to take into account all of the components (charger, battery size + charge/discharge rate + inverter). Only then you can put it into perspective.