KARACHI: The Meteorological Department on Thursday announced possible light rain and strong winds in northern Karachi due to rising temperatures.
According to a statement issued regarding this matter, due to the formation of thunderstorm cells, lightning was witnessed in various parts of the city, including Bahria City, Gadap City, and the area around the Airport.
The northern part of the city is also likely to receive light drizzle along with strong winds, the Meteorological Department said.
“Winds can blow at speeds of 25 to 30 mph,” the statement said.
When the initial closure of Victoria’s second-largest coal-fired power plant was announced last week, something the energy minister said was less than complete.
Yallourn, in the Latrobe Valley, provides up to 20 percent victorian powers. Has been in operation for 47 years. Since the end of 2017 at least one in four of its units has been damaged 50 times. The workforce double for three to four months at most years to deal with the damage. It’s pumping out 3 percent Australian carbon emissions.
On Wednesday, Energy Australia gave seven years notice of its intention to close it mid 2028, four years earlier than previously announced, that is likely the regulator have been prepared.
And there he finished it, without going into detail about what really mattered. South Australia and Victoria now have files Lowest wholesale power in the National Electricity Market – true, lowest.
Coal-fired power plants shut down, then prices drop
Before the North closed, South Australia owned Australia the tallest price.
Five years after Northern’s closure in 2016, and four years after Hazelwood’s 2017 closure, South Australia and Victoria have wholesale prices. one third lower than in NSW and two fifths lower than in Queensland.
Something happened after the close (mostly as a result of the close) that forced the price down.
South Australia is becoming a renewable powerhouse.
Australian National University Hugh Saddler shows that renewable resources – gridded wind and solar – now account for 62 per cent of the electricity supplied to South Australia’s grid, and sometimes to all of the.
Most of it is produced near Port Augusta, where the coal-fired power plants in the North and Playford used to be, because that’s where the transmission line starts.
Being cheaper than the power generated by old brown coal fired power plants, sometimes there is so much that it sends a price negative, meaning the generator is paid to shut down to avoid putting more power into the system than the user can take away.
That’s one of the reasons for shutting down coal-fired power stations: it’s difficult to shut down. They are just as difficult to turn on, and quite difficult to come up with.
Coal cannot respond quickly
There are times (like when the wind isn’t blowing and there’s not much sun, like last Friday in South Australia) when prices can get very high.
But coal-fired power stations, particularly brown coal-fired plants like Victoria’s Hazelwood and Yallourn and Victoria’s two remaining large power plants, Loy Yang A and B, cannot quickly scale up to take advantage of them.
Although “can be sent“In the technical sense of the term used by the minister, coal-fired power plants cannot fill the gap quickly.
Batteries can respond immediately to loss of power from other sources (although not for a long time), hydro can respond 30 to 70 seconds, the gas peak plant can respond inside minute.
But coal can barely move. As with nuclear power, coal power must be turned on (in this case it can only be increased slowly) or turned off, in which case starting it from scratch would be too slow.
What was once a feature is now a bug
That’s why coal-fired generators operate 24-7, to provide the so-called base load, because they can’t do anything else.
The brown coal generator is the least deliverable. Brown coal is about 60 percent water. To make it flare up and still simmer, a sustainable ultra-high temperature is required. Yallourn’s units must either keep burning coal at high output (however low or negative the price) or turn it off.
On the days when other resources could be turned on and off at will, this wasn’t too big of a deal.
Hydro or gas can be turned on in the morning when we turn on the lights and heaters and factories start operating, and coal power can be gradually increased.
At night, when the demand for coal power is reduced, some can be made by offering inexpensive off-peak water heaters.
But those days are gone. Nationally, wind and sun are included in the solar supply on the roof 20 percent of our needs. It turns on and off at will.
The wind often blows hard at night. What characterizes coal – its ability to provide steady power rather than fill in gaps – has become a bug.
Gas and batteries can fill in gaps that coal cannot hold
It is as if our power system has become a puzzle with the immovable pieces provided by the wind and the sun. It’s our job to fill in the blanks.
To some extent, as a Prime Minister said gas would be a transitional fuel, capable of filling the gap in a way coal could not. But fuel became expensive, and batteries were installed everywhere.
Energy Australia plans to replace Yallourn’s power plant with Australia first four hour utility scale battery with a capacity of 350 megawatts, more than any battery operating in the world today. South Australia is planning a bigger one, up 900 megawatts.
Australian’s Future Fund and AGL Energy are investing $ 2.7 billion in wind farms in NSW and Queensland that will fill gaps in different ways – peak yields at different times compared to wind farms in South Australia and Victoria.
Filling the gaps won’t be easy, and had we not gone this way there might still be a role for coal, but the further down we go, the less coal can help.
As cheap as coal power is, it is forced out of the system by a power source that is cheaper and easier to deliver. We can’t go back.
Peter Martin is a visiting fellow at the Crawford School of Public Policy, Australian National University.This article was originally published on The Conversation.
With winds on the lower end of the expected wind threshold for the second day of the Copa America, today could be the day Team New Zealand unveils “The Whomper”.
What … you may ask? Here’s everything you need to know about dramatic screens, including how they are used, when and why.
The Whomper is a large, light, traditional, masthead sailing style that will allow Te Rehutai to continue fighting his way to the finish line if the winds become so light he can’t stay on the mast.
Regatta director Iain Murray is unsure about race conditions this morning, with around 2-7 knots of wind from the northeast expected today.
A race cannot take place if the wind speed is not recorded to exceed 6.5 knots for five continuous minutes on the course selected before the scheduled race.
In addition, if the race is to start in marginal conditions, the lead ship must arrive at the first mark within 12 minutes while the total race time must not exceed 45 minutes.
However, if the wind conditions did meet the threshold for the occurrence of a race, it would likely be at a very challenging level for the two ships to stay in foil.
That’s where The Whomper might come in.
AUT Screen Professor Mark Orams was thrilled by the potential of his performance, but said it could also turn against them.
“The only time I can see it deployed is if the weather is clear, the wind will not rise to a level that allows takeoff and derail and the boat sails with the wind in displacement mode,” he said.
“What’s really scary is if they produce enough power and speed to lift onto the foil and suddenly the ‘whoper’ will become a huge load and sure to be a ‘screen of doom’.
“But I would love to see him … I am a sailor around the old world where there are no limits, you can just use whatever nature gives you whether it’s zero or 60 knots.”
The screen name comes from a film documenting the success of the 1983 America’s Cup campaign, but steals details from a 1987 campaign in which Australia’s Alan Bond IV used a giant spinnaker screen.
The Whomper is “a completely asymmetrical spinnaker description developed by the Bond syndicate for the first reach at 12 meters pinned from the bow, or through the post to the bow, as opposed to flying it high at the post”, Murray explained to the media during a briefing on the day. Friday.
Put simply, what the general public can understand: it makes a “whomp!” sound when filled with the wind.
World champion sailor Phil Robertson told NZME in February that there would be many logistical issues to be overcome in rolling and unfolding sails – which are not good against the wind – during the race.
Sailing observers told the Herald they were wondering how the team could combat the breezes that continued during the race, after the crazy Christmas Cup clash between Team NZ and Team Ineos England.
The victory of the NZ team was robbed of the race, their huge lead meaningless after the boat was stranded in light air and was unable to meet the 45 minute time limit.
Today might be the perfect conditions for Team NZ to unveil this invisible weapon and sailing enthusiasts will listen closely.
Towards a Cup race?
• Give yourself plenty of time and think about taking the ferry, train, or bus to watch the Cup.
• Make sure your AT HOP card is in your pocket. It’s the best way to ride.
• Don’t forget to scan the QR code with the NZ COVID Tracer app when taking public transportation and entering America’s Cup Village.
SolarWinds executives condemned interns for leaking the password’solarwinds123′ for causing the largest security breach in the United States ( From paint
Now, several current and former executives of SolarWinds now attribute a company intern to a “serious mistake” in the company’s password security, which has actually been undiagnosed for years. The leaked password was allegedly “solarwinds123” and was discovered on the Internet in 2019 by a special independent security researcher who warned the company about the exposure of the SolarWinds file server.
How was SolarWinds hacked?
In a recent joint hearing between the U.S. House of Representatives Oversight Committee and the Homeland Securities Commission, many U.S. lawmakers have stolen the entire SolarWinds password issue. The comment on behalf of Katie Porter pointed out that compared to the basic “solarwinds123”, she has a stronger password that can prevent children from watching too much YouTube on their laptops. Then she pointed out that the company should be a leader in preventing Russians from reading the Ministry of Defense email!
according to CNN storyMicrosoft President Brad Smith (Brad Smith) also testified at the hearing. He pointed out that there is actually no evidence that the Pentagon has been affected by so-called Russian espionage. Microsoft is also one of many companies leading the forensic investigation of the entire hacking campaign.
What did the SolarWinds hacker do?
Smith then told Porter that he had no indication that the official Ministry of Defense had been violated. SolarWinds representatives told lawmakers that once the entire password issue was reported, it was corrected in just a few days.OneBusiness Insider ReportHowever, it is still noticed that many key data have been exposed.
However, it is not clear to what extent the leaked password allows Russian hackers to access to monitor many federal agencies and businesses, which is one of the largest security breaches in US history. According to reports, hackers concealed malicious code in software updates and pushed it to approximately 18,000 customers and federal agencies.
Kevin Thompson, the former CEO of SolarWinds, pointed out that the whole situation was a mistake made by interns. He even pointed out that the intern “violated” the company’s password policy and had posted the password to his private Github account. He then pointed out that the company immediately removed all content after discovering the problem.
There is no explanation as to why the company’s technology allows this type of password. Sudhakar Ramakrishna, the current CEO of SolarWinds, later revealed that the password has actually been used since the beginning of 2017.
Vinoth Kumar, the researcher responsible for discovering the leaked password, pointed out to CNN that the password has been accessible since June 2018. SolarWinds and Kumar’s emails show that this password allows Kumar to log in secretly and successfully upload files to the company’s key servers.