6 ms·
Take a shot every time the article uses "GW" and "MWh/GWh" apparently interchangeably for "energy" or "power", also seemingly at random.
by ThePadawan 5y ago
Take a shot every time the article uses "GW" and "MWh/GWh" apparently interchangeably for "energy" or "power", also seemingly at random.
- firebaze 5y ago"My car runs 100 miles!" instead of "My car runs 100 miles per gallon!", and almost anyone would notice something is amiss. I don't get the difference to mixing "Watts" with "Watts/hour".
- pranavjoneja 5y agoEnergy is not Watts per hour (Watts/hour), it's Watts times hours (Watt-hours). Sorry for pedantry, but the units are the topic of discussion here.
- deleted 5y ago[deleted]
- vizzier 5y agoAnd in turn, watts are joules per second. Resolve Hours to 3600 seconds means 1 Wh = 3600 Joules. Which is the unit we should be using.
- HPsquared 5y agoThat's got me trying to visualise "mile-gallons", and failing because its dimensions would be "length^4".
- deleted 5y ago[deleted]
- firebaze 5y agoI did not imply that at all.
- long_time_gone 5y agoNot knowing the difference in miles and miles/gallon will get you stranded in your car pretty quickly. Now knowing the difference between watts and watts/hour will have almost no appreciable effect on your life. You flip a switch, the light turns on, and you get an invoice a month later.
- tohmasu 5y agoSure, but people writing articles on the subject should know better than to mix units like this.
- renewiltord 5y agoActually, I thought it was very easy to understand. For instance, > Fortunately, 2,000 MW of energy storage capacity is coming online by August 1, per the California Public Utility Commission. Much of this capacity will have four hours of battery energy sitting behind it, nearly 8,000 MWh in total. That's 2 GW of power delivery backed by 8 GWh of storage.
- Denvercoder9 5y ago> 2,000 MW of energy storage capacity I think this is where the confusion starts: if someone talks about "energy storage capacity", my first association is the amount of energy that can be stored, not the rate at which that energy can be discharged from the storage (i.e. power).
- samatman 5y agoIt is a bit confusing, but it isn't wrong, there are just two capacities in question. We could call them power capacity and energy capacity. This system can deliver 2000MW for four hours, or 1000MW for eight hours, but can't deliver 4000MW for two hours, because that exceeds the power capacity.