Final 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 stage
It is often difficult to defeat a team three times in one season.Fortunately for No. 6 USC women’s volleyball, this proved to be true for No. 3 Stanford.After losing both regular season matches to the Cardinal, the Women of Troy were able to win when it mattered most, defeating Stanford and earning a spot in the Final Four.USC won Saturday’s Elite Eight match in Dayton, Ohio, in five sets, 20-25, 25-17, 22-25, 26-24 and 16-14.Freshman outside hitter Falyn Fonoimoana showed why she was worthy of her Pac-10 Freshman of the Year title, recording a team-high 25 kills in the match, along with four blocks. Fellow outside hitter Alex Jupiter added 22 kills, while middle blocker Lauren Williams had 13.In October, Stanford handed the Women of Troy their second loss of the season with a four-set win at the Galen Center. The Cardinal also swept USC in Palo Alto when the teams met again a month later.USC advanced to Saturday’s game after sweeping Indiana on Friday night. The Women of Troy opened the tournament last weekend with a three-game sweep of New Mexico, followed by a four-set win against San Diego to make it back to the Sweet 16. Both of these first two games were at the Galen Center.The Women of Troy have now won 15 of their last 16 matches.USC joins the No. 4 Penn State Nittany Lions in the Final Four. The Women of Troy will face off against the winner of Saturday’s match between two Pac-10 teams, No. 7 California and Washington. The fourth and final spot will be occupied by either No. 9 Texas or No. 16 Purdue.The Final Four will take place next weekend in Kansas City. If USC comes away with a victory on Thursday, it will advance to the NCAA championship game Saturday, Dec. 18 at 5:30 p.m. PST, which will be aired on ESPN2.