Australian grid regulator releases blueprint for integrating 75% green electricity

first_imgAustralian grid regulator releases blueprint for integrating 75% green electricity FacebookTwitterLinkedInEmailPrint分享Renew Economy:The Australian Energy Market Operator has laid out an action plan to accommodate levels of up to 75 percent “instant” penetration of wind and solar in Australia’s main grid by 2025, saying the country had the technical know-how to cope with such a high penetration of wind and solar, but needed to urgently update the market and regulatory settings.Releasing the long-await Renewable Integration Study, a key adjunct to its 20-year blueprint for the grid transition known as the Integrated System Plan, AEMO chief executive Audrey Zibelman reinforced the widespread view that integrating very high levels of renewables is not so much a technical challenge. It’s more about updating rules and regulations to make them fit for purpose for a new system, and to add new markets to ensure the availability of essential services such as inertia and voltage. Without these changes, AEMO warns it may have to limit the contribution of wind and solar resources to 50 or 60 per cent of electricity supply at any point in time.“Australia already has the technical capability to safely operate a power system where three quarters of our energy at times comes from wind and solar energy generation,” Zibelman says in a statement accompanying the report. “However, to do so requires changes in our markets and regulatory requirements. Otherwise, AEMO will be required to limit the contribution of these wind and solar resources to 50 or 60 per cent of electricity supply at any point in time, even though they are the lowest cost way of providing electricity,” she warned.Wind and solar have recently accounted for close to 50 per cent of supply in the National Electricity Market in some trading periods (more than 50 per cent including hydro, and up to 140 per cent wind and solar in South Australia), although there have been some 5-minute intervals where wind and solar has already exceeded 50 per cent.AEMO, which is responsible for managing grid and keeping the lights on, debunks this and says there is no reason Australia cannot have a very high level of renewables: “Beyond 2025, AEMO has not identified any insurmountable reasons why the NEM cannot operate securely at even higher levels of wind and solar penetration, especially with ongoing technological advancement worldwide,” it notes.Indeed, its ISP maps out a path – mostly through infrastructure – to accommodate a 90 per cent share of renewables in Australia’s main grid by 2040.[Giles Parkinson]More: AEMO lays out “action plan” to manage 75 pct wind and solar by 2025last_img read more

FH : Orange faces top-5 opponent for 2nd consecutive weekend

first_img Published on September 7, 2011 at 12:00 pm Contact Stephen: sebail01@syr.edu | @Stephen_Bailey1 Syracuse spent all of last week gearing up for a matchup with then-No. 2 North Carolina. This week, the Orange has been doing the same thing.In the new NFHCA Coaches poll Tuesday, SU’s first opponent of this weekend, Old Dominion, climbed 10 spots to the No. 2 spot. Syracuse blew a two-goal lead against the Tar Heels last weekend. But SU is grateful for another opportunity against the Monarchs.‘Not a lot of people get a second opportunity,’ freshman midfielder Jordan Page said. ‘And I think that if you don’t take good care of the opportunities you are presented, they will most likely be taken care of by someone else.’Syracuse takes on the Monarchs on Saturday in the second game of a doubleheader on Ohio State’s campus this weekend, the second doubleheader in as many weekends for the No. 5 Orange. SU (2-1) will take on unranked Ohio State (2-3) on Friday. The Buckeyes do have history with head coach Ange Bradley’s squad, eliminating the Orange in the second round of the NCAA tournament last season.But while SU is looking for two wins this weekend, the main focus is undoubtedly Old Dominion. AdvertisementThis is placeholder textAfter defeating then-No. 1 Maryland this past Friday, ODU was right behind North Carolina for the No. 1 ranking in Tuesday’s poll, earning 14 of the 31 first-place votes. But SU will take the field against the Monarchs with the same feeling it had when it traveled to Chapel Hill, N.C.Syracuse is more concerned with the opposing team on the field than the ranking listed by its name, junior back Iona Holloway said.‘Rankings are what they are,’ Holloway said. ‘They’re not something that we pay particular attention to.’Holloway’s sentiments mimicked those of Bradley’s one week ago when she called Syracuse the ‘most threatening’ team to itself this year.The Orange has maintained an aggressive approach on the field through three games no matter how highly regarded its opponents have been so far. With its only loss coming to the current top team in the nation, SU has executed well so far.Syracuse’s mentality didn’t waver in a 4-1 win over then-No. 11 Wake Forest this past Saturday, just one day after the Orange was defeated.  Holloway said that disposition of consistency is just the Syracuse way.‘We are an attacking team,’ Holloway said. ‘Our press is attacking, we play hard defense. Nothing changes particularly from week to week.’Syracuse’s first matchup of the weekend — although not as big this year — is a rematch for a disappointing result last year. The Orange fell to Ohio State 3-2 in overtime of a second-round matchup in last year’s NCAA tournament.Though the seniors on that team are gone and the freshman class hadn’t yet joined Syracuse, roughly half the players who were there that day in University Park, Pa., are still on roster. And they haven’t forgotten that matchup.Sophomore back Laura Hahnefeldt still remembers how she felt walking off the field. The team’s hopes and dreams of reaching the final four were gone, just like that.But this is a new team and a new year. Rather than looking back, Hahnefeldt and the Orange are moving forward.‘We fought so hard and now that we have another chance, we really want to make up for it,’ Hahnefeldt said. ‘We really want to be at the top of the rankings, and it’s a good opportunity to play them to see where we are.’A win over OSU would provide the Orange with a small taste of redemption. But as far as moving to the top of the rankings, a win over Old Dominion would make a stronger case.In addition to dethroning the Terrapins, ODU defeated then-No. 3 Virginia two days later. The Monarchs also knocked off then-No. 8 Penn State and then-No. 10 American earlier in the season.Syracuse hopes to avoid being on Old Dominion’s growing list of top-10 victims.ODU’s impressive resume, paired with the fact that SU lost in its first opportunity to beat the No. 2 team in the country, adds up to a lot of motivation, said Holloway.The Orange won’t go down without a fight.‘We’re just really excited to get another chance to play a very highly ranked team who has come out really strong at the start of their season,’ Holloway said.sebail01@syr.edu Commentscenter_img Facebook Twitter Google+last_img read more

“My players were too complacent against Dwarfs” Aduana coach W.O. Tandoh

first_imgAduana Stars assistant head coach, W.O. Tandoh, was very furious with his players after their 3-1 loss to Ebusua Dwarfs in Cape Coast in Wednesday’s Week 8 Ghana Premier League tie.Aduana Stars fell to goals from Michael Asamoah, Seidu Abubakari and Isaac Donkor at the Cape Coast much to the surprise of observers who were of the opinion that the former league champions would have enough to get a good result out of the match.After the match, Tandoh, did not hide his observations of his players and heavily descended on them for their approach to the match.“We lost the match because the players very complacent and they felt as though they were sure of a victory.I do not know how the players saw the match but they were tactically undisciplined on the first half and they produced a zero performance.Things got better when we started the second half but they caused more blunders and gave away the second and third goals.”The loss was Aduana Stars’ second of the season and it snapped a three-game unbeaten run where they beat Legon Cities 2-0, drew 1-1 with Berekum Chelsea and defeated Medeama 1-0.Aduana Stars face Hearts in Dormaa in Week 10 of the Ghana Premier League.last_img read more