That's a weird way, misleading way and negative way to represent energy. I doubt those kind of storage is designed to be used at full capacity (because the grid is... a grid). The official press...
The 70-megawatt system — which can store power for two hours
That's a weird way, misleading way and negative way to represent energy. I doubt those kind of storage is designed to be used at full capacity (because the grid is... a grid).
he project will add 70 MW/140 MWh of storage capacity to SEB Nordic Energy’s Finnish portfolio
Which gives us the output (70 MW, or like 20 wind turbines, or one large solar installation) and amount of energy stored (140 MWh).
Some napkin calc: A Swedish household uses about 20 KWh per day, so this battery (140 MWh) can power 7000 of them (i.e. a small town of 21 000 peoples) for a day (140 000 / 20 = 7000). Or 20 of them (a small village ?) for a year (7000/365 = 19-ish) . Or we can use the (wrong) assumption that half of the time it's not used (because it's using solar), so we say it's 14 000 households (42 000 inhabitants), which is a medium town for a day.
Which is any case is a better outlook than saying "this thing can only work for 2 hours lol".
Large battery developers and operators often refer to batteries by the duration at which they can discharge at max power, so a "two hour battery", "four hour battery" etc. For example:...
That's a weird way, misleading way and negative way to represent energy. I doubt those kind of storage is designed to be used at full capacity (because the grid is... a grid).
The official press release says:
Which gives us the output (70 MW, or like 20 wind turbines, or one large solar installation) and amount of energy stored (140 MWh).
Some napkin calc: A Swedish household uses about 20 KWh per day, so this battery (140 MWh) can power 7000 of them (i.e. a small town of 21 000 peoples) for a day (140 000 / 20 = 7000). Or 20 of them (a small village ?) for a year (7000/365 = 19-ish) . Or we can use the (wrong) assumption that half of the time it's not used (because it's using solar), so we say it's 14 000 households (42 000 inhabitants), which is a medium town for a day.
Which is any case is a better outlook than saying "this thing can only work for 2 hours lol".
Large battery developers and operators often refer to batteries by the duration at which they can discharge at max power, so a "two hour battery", "four hour battery" etc. For example: https://timera-energy.com/blog/battery-storage-duration-is-lengthening/
But to your point, the capacity itself is of interest to readers and should be provided up front in the article without making people do mental math.
Mirror: https://archive.is/WIuIk