111–120 of 146 posts
Google translate of the first tweet (in German): > Extreme nightcap in the #network frequency. Quite unusual at this height and at this point in time. One of my measuring devices even shows 49.74Hz as a minimum. Has a major #power plant failed somewhere? And second tweet: >Here is another representation of the # mains frequency from just now. Extremely unusual, as a malfunction is to be suspected. Unfortunately, none…
Without really understanding much what is going on, this seems to be related: "System split registered in the synchronous area of Continental Europe – Incident now resolved" https://www.entsoe.eu/news/2021/01/08/system-split-registere...
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That would be politically inconvenient.
No, that would be using solar as a scapegoat for bad planning.
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I want to get rooftop solar and a battery pack for my house. But I really don't want to a lithium battery attached to my house. I feel like there'd be a good business in selling battery 'space' in a big fire proof box down the street that I could then offset my meter against. Wouldn't even need to be in my street if I could get the offset.
Why does it have to be lithium technology? The reason electric cars use it is because of energy density (weight savings). For home use, weight is completely irrelevant. You could use much safer lead acid batteries (sealed/AGM) and rig your own inverter setup. This is also a lot easier to maintain over time, as you can scale up/down and swap individual batteries as required.
But if you want to rig you leave own setup with lithium ion, scaling up and down with smallish individual battery units over time, those are available for sale. The list prices I've seen are pretty high, about $700/kWh, however. An integrated unit can be cheaper. And as lithium ion battery prices plummet over the next two years, and factories scale, the home storage market will hopefully start to get access to $300/kWh products or cheaper.
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High voltage fluctuations today. Instead of 220V we got down to ~165V. Internet outages on top (I assume some hardware failed since multiple counties were affected on the RDS network). Edit. Here's a power graphic: https://www.transelectrica.ro/widget/web/tel/sen-grafic/-/SE... Seems Romanias production fell under the consumption at around 15:30 Water fell at that time, so maybe some hydro was shut down? We did have…
> Seems Romanias production fell under the consumption at around 15:30 But the incident started at 15:05, that was just a consequence of interconnects failing i think.
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It should at least be heat pumps...
heat pump are highly inefficient if outside temp gets below ~5 degC and that's what happening right now on most of Europe ( incl. southern europe, I saw spain mentionned here ... )
It should be the same in Europe and it will work in case the temp drops too low.
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Do people really keep their vehicles for decades?
It doesn't really matter if people keep their vehicle for decades, because people usually sell their old vehicles for use by others when they get a new (to them) vehicle. What you want to know is the average life of a vehicle (or average age of the fleet), not the average period of ownership. I'm sure that varies by country; IIRC Germany has punative taxes on registering old cars, so their average age should be a lot…
On a personal note, me and most of the people I know think more in terms of miles than years. I figure every car I buy is good for 200,000 miles and most of the brands I favor have another 100,000 miles of life beyond that before repairs exceed some loosely calculated rate of return.
Google translate of the first tweet (in German): > Extreme nightcap in the #network frequency. Quite unusual at this height and at this point in time. One of my measuring devices even shows 49.74Hz as a minimum. Has a major #power plant failed somewhere? And second tweet: >Here is another representation of the # mains frequency from just now. Extremely unusual, as a malfunction is to be suspected. Unfortunately, none…
There's a translate tweet button right on twitter, isn't there?
Romanian news are screaming about several counties (like 1/5 of RO) being blacked out and this being a problem at the interconnection with the neighboring power grids. From the little I know about power lines, events like this can cascade to half a continent.
I know this makes no sense and in other languages "news" has both singular and plural but that's English for you.