Final testing under way at expanded Hornsdale big battery in Australia

first_imgFinal testing under way at expanded Hornsdale big battery in Australia FacebookTwitterLinkedInEmailPrint分享Renew Economy:The Tesla big battery at Hornsdale in South Australia is entering the final testing of its expanded capacity, and is achieving some significant new records and milestones that would be expected when the world’s biggest lithium ion battery gets even bigger.The Hornsdale battery set a world record for a lithium-ion battery installation when it was installed in late 2017 with capacity of 100MW/129MWh. It has played an important control in providing frequency control and emergency back-up – both critical in helping keep the lights on during major network problems – as well as doing the normal storage thing of energy arbitrage, buying at the lows and selling at the peaks.It is now being expanded to a capacity of 150MW/194MWh, and is adding new services, particularly synthetic inertia, that will allow it to replicate more of the services once exclusive to fossil fuel generators in South Australia, and allow the grid to take another important step towards the shift to the state government target of “net 100 per cent renewables.”The expanded Hornsdale Power Reserve (its official name) is owned by the French renewable energy developer Neoen and located next to the 315MW Hornsdale wind facilities, and got the OK to connect last month. It is now going through testing that allows it to progress through various “hold points” that it can straddle once the market operator is satisfied with the outcome.On Tuesday, in the latest series of tests, the Hornsdale battery did a rapid 270MW flip – from charging at 120MW to discharging at 150MW. It appears to have flipped between the two on several different occasions – at least one of which had an immediate impact on the wholesale price of electricity, pushing it down to the peppercorn price of just above $8/MWh.Those 270MW flips – from the level of discharge to the level of charge – are likely a world record in both speed and extent of the change. And it’s this flexibility of the big batteries such as Hornsdale, and others at Dalrymple North, Lake Bonney, Gannawarra and Ballarat, that is particularly attractive to project owners and valuable to AEMO, the market operator.[Giles Parkinson]More: Tesla big battery sets new record as testing for Hornsdale expansion enters final stagelast_img read more

‘I Love Long Island’ Campaign Tackles Harmful Lawn Fertilizers

first_imgSign up for our COVID-19 newsletter to stay up-to-date on the latest coronavirus news throughout New York A local environmental group is taking the fight against water pollution straight to Long Islanders’ lawns through a new “I Love Long Island” campaign meant to curb the use of potentially harmful high-nitrogen fertilizers.The ambitious project, spearheaded by the nonprofit Grassroots Environmental Education, coincides with Earth Day, which is on April 22. To raise awareness about pesticides and high-nitrogen fertilizer, Doug Wood, associate director of Grassroots Environmental Education, founded ILoveLongIsland.org. The site provides educational material about certain lawn products and encourages people to sign a pledge to refrain from using fertilizers containing 10 percent nitrogen or more on their property. A coalition of more than 30 environmental groups has already signed the pledge. “This is like heroin for your lawn,” Wood said, explaining that grass and plants eventually become too dependent on such products to survive. Part of the problem is people are constantly seeking “that perfect lawn…but they don’t realize there’s a payment for this,” he said, adding that stormwater runoff can lead to contaminated drinking water, algae blooms and fish kills. Wood sees an opportunity in changing people’s habits toward how they treat their lawns. “This is a problem that people can do something about,” he said. Along with launching the new website, GEE is creating 500 “I Love Long Island” lawn signs that will be ready for distribution on Earth Day, and he commissioned a short video explaining the potential dangers associated with high-nitrogen products. The animated video, “I Love Long Island—The Movie,” depicts a Long Islander convincing his neighbor who enjoys fishing to make the switch to more environmentally friendly products. One of the biggest threats to Long Island’s water supply is nitrogen, which can seep into the Island’s many waterways and vulnerable underground aquifers, which are the main source of the region’s drinking water. While nitrogen produced by wastewater has been blamed for threatening protective marshlands, experts also point to other pollutants and fertilizer as possible factors of environmental degradation. Wood acknowledges that many homeowners are simply unaware about the effects of high-nitrogen products, and he’s sympathetic to landscapers who understand potential consequences but are “kind of forced by the market to use these chemicals.” He also understands that the higher price tag associated with organic fertilizers can be a deterrent. “I’m not trying to take business away from anybody…I’d like to see everyone do well,” he said. In the past, Wood’s organization has trained more than 1,000 landscapers in the science of lawn care, and was hired by the New York Department of Environmental Conservation to train school facility directors on the topic. New York, he noted, is the only state in the country that prohibits pesticides on school grounds. Now Wood and a coalition of groups that signed on to the “I Love Long Island” pledge are hoping to educate residents who want to do their part in protecting the region’s natural resources.last_img read more

Wimbledon 2019: Roger Federer eases into Wimbledon second week

first_imgAfter striking at a crucial moment to claim a tight opening set, a Federer victory rarely looked in doubt from then on.The 37-year-old will now face Matteo Berrettini in the last 16 after the Italian beat Diego Schwartzman in five sets. Related News Nick Kyrgios unapologetic over Rafael Nadal shot: ‘I wanted to hit him’ Federer had to save two break points in an even first set, including one with a smash as he edged into a 6-5 lead.Pouille had not afforded Federer a single break opportunity despite a poor first-serve percentage of 43 in the opener until he lost focus at a vital moment with a tie-break beckoning.Some superb play at the net helped Federer to force two set points, the second of which was converted when the Frenchman sent a forehand off target.The Swiss star asserted his dominance early in the second, a stunning forehand winner on the run sending him on the way to the first of two straight breaks and a 4-0 lead.It’s hard to stop @rogerfederer in this kind of form…The Swiss defeats Lucas Pouille 7-5, 6-2, 7-6(4) to notch his 350th match win at Grand Slams – the first player in history to reach the milestone#Wimbledon pic.twitter.com/A1sBL0HS5L— Wimbledon (@Wimbledon) July 6, 2019Pouille struck back with a break of his own, but the 27th seed’s serve gave way for the third time in the set when he could not handle a forehand from his opponent at the net. Roger Federer encountered few problems as he defeated Lucas Pouille in straight sets to reach the second week of Wimbledon.The second seed won Saturday’s third-round clash 7-5, 6-2, 7-6 (7-4) in two hours and five minutes on Centre Court.center_img Wimbledon 2019: Rafael Nadal outplays Jo-Wilfried Tsonga for speedy progress into next round In only the second meeting between the players, former Wimbledon quarterfinalist Pouille did not cave in, taking the third set to a tie-break after saving a match point with an ace.But an early mini-break gave Federer the tie-break advantage and, after another match point went begging, his 350th grand-slam victory was sealed when his opponent’s backhand found the net.This GOAT just became the first player to record 350 Grand Slam singles match wins. Absolutely outstanding! #Wimbledon #champion pic.twitter.com/SULqnamw24— Billie Jean King (@BillieJeanKing) July 6, 2019last_img read more