Waarom zeer lang opslaan? s nachts wordt er amper stroom verbruikt. En de volgende dag kan er er weer (meer) wind en of zon zijn.
Nee, megabatterijen zijn er voor stroomvraagpieken op te vangen (als velen na hun werk thuiskomen en vele alle toeters en bellen gaan benutten), anders moet je daarvoor dure gascentrales inschakelen, bovendien kunnen die batterijparken ook voor netstabilisatie zorgen in milliseconden.
Die batterijparken worden in de regel met zon en wind opgeladen.
Zelfs > 1GWh in 2023, Monterey County:
https://www.pge.com/en/about/newsroo...storage_system oude gaspeakers of gascentrales hoeven dan niet meer.
Een "kleiner" batterijpark (uitgebreid naar 194 MWh sinds 2020) staat al enkele jaren geld te verdienen in Australië:
https://hornsdalepowerreserve.com.au/
https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve
opgeladen door 99 windturbines:
De hele uitleg staat te lezen in die wiki links, die ene functionele grafiek zegt al genoeg over de principewerkingen
1. en
2.
Operation
It is owned[24] and operated by Neoen, with the state government having the right to call on the stored power under certain circumstances.[25] Phase one provided a total of 129 megawatt-hours (460 GJ) of storage capable of discharge at 100 megawatts (130,000 hp) into the power grid, which is contractually divided into two parts:[26][needs update]
1. 70 MW running for 10 minutes (11.7 MWh) is contracted to the government to provide stability to the grid (grid services)[27] and prevent load-shedding blackouts[16][28] while other generators are started in the event of sudden drops in wind or other network issues. This service has reduced the cost of grid services to the Australian Energy Market Operator by 90%.[29]
2. 30 MW for 3 hours (90 MWh) is used by Neoen for load management to store energy when prices are low and sell it when demand is high.[30]
On 14 December 2017, at 1:58:59 am, the HPR reacted when unit A3 at Loy Yang Power Station tripped. As its generators spun down over the next 30 seconds, the loss of its 560 MW of base power caused a dip in the system frequency. By 1:59:19, the frequency had fallen to 49.8 Hz, and triggered HPR's response, injecting 7.3 MW into the grid and effectively helping to stabilise the system before the Gladstone Power Station was able to respond at 1:59:27. This synchronverter reaction is a built-in feature, but had not previously been effectively demonstrated.[27]
During two days in January 2018 when the wholesale spot price for electricity in South Australia rose due to hot weather, the battery made its owners an estimated A$1,000,000 (US$800,000) as they sold power from the battery to the grid for a price of around A$14,000/MWh.[31] Based on the first six months of operation, the reserve is estimated to earn about A$18 million per year.[32] (This is a third-party estimate, based on spot energy prices; it is possible that the HPR has contracted to provide power at a lower price, in exchange for a more certain income stream.)
After six months of operation, the Hornsdale Power Reserve was responsible for 55% of frequency control and ancillary services in South Australia.[29] By the end of 2018, it was estimated that the Power Reserve had saved A$40 million in costs, mostly in eliminating the need for a fuel-powered 35 MW Frequency Control Ancillary Service.[33] In 2019, grid costs were reduced by $116 million due to the operation of HPR.[34]
The battery usually arbitrages 30 MW or less, but in May 2019 began charging and discharging at around 80 MW and for longer than usual, increasing wind power production by reducing curtailment.[35][36] FCAS is the main source of revenue.[22]
Ik zou toch maar beter googlen als ik jou was.