21–30 of 61 posts
California is at the caost, so why not just add what amounts to reservoir dams of the coast? Why batteries?
Off-topic but reflecting on the PV in the domain name: What kind of home PV solar panels should a person ask a contractor for? How do you know they're giving you quality rated panels?
Take a shot every time the article uses "GW" and "MWh/GWh" apparently interchangeably for "energy" or "power", also seemingly at random.
Actually, 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.
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).
Earlier quoted context omitted.
Actually, 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.
> 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).
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.
Based on the energy mix, it looks like lost coal capacity has been replaced with solar and other green energy, and demand has gone down relative to population because of efficiency initiatives and rooftop solar for the largest home consumers (rich people).
I'll bet demand falls even faster as home energy storage gets cheaper and more prevalent.
Earlier quoted context omitted.
"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".
Energy 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.
Well the new hybrid inverter from phocus is supposed to use the generation when grid outside is down internally at home and that opens up a lot of possibilities.
Been thinking about using solar water heating to reduce electricity consumption but that is a big project.
Batteries are still expensive in india. Lithium ion is prohibitively expensive than lead acid. Agreed it pays in time of life but still.
Edit: anyone know if I can incorporate phocus inverter into home assistant ? It has ble so some sort ?
Earlier quoted context omitted.
Actually, 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.
> 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).
The right answer is to use power and energy capacity respectively if you’re talking to lay people but this publication is talking to people who disambiguate based off the units pretty easily.
Nuclear capacity/wind capacity/Energy Storage Capacity. Three different delivery methods for power. That’s how they’d read it at the end of the sentence.
But anyway, the trick is to perform either unit disambiguation or perform one sentence lookahead.
And finally, think of it as no different from using the summation convention in tensor notation. You read it and you’re like wtf but that’s because you’re not the audience and you lack the context to get it.
Earlier quoted context omitted.
> 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).
It 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.
We don't state that a car with a 100mph top speed has a 100mph capacity.
Earlier quoted context omitted.
> 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).
It 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.