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Energy firm AES Company is investigating the reason for thermal runaway at a 10MW battery energy storage system (BESS) website it owns and operates in Chandler, Arizona.

The hearth on the Dorman battery storage facility, which offers energy to native utility Salt River Challenge (SRP), started on 18 April. The sprinkler system was deployed robotically and continued to spray water for a number of days to maintain the temperature down, and was turned off on April 29.

SRP mentioned that on 1 Could the fireplace division turned management of the positioning again over to AES in order that it may start its investigation, with the battery constructing secure with no seen indication of smoke or hearth for greater than two days.

“For the reason that turnover to AES, CFD (Chandler Hearth Division) returned to the positioning to reply as wanted. The scenario is taken into account underneath management and stays underneath AES management,” the assertion mentioned. “The investigation of the incident can be led by AES.”

There have been no accidents related to the occasion and no harm to SRP electrical electrical services, SRP advised Energy-storage.information in an announcement. The closest freeway was closed, the Metropolis of Chandler notified close by companies to evacuate and SRP disconnected its adjoining Knox Substation from the BESS.

Dorman is a 10MW, 4 hour, standalone BESS mission owned and operated by AES Company. It was accomplished in 2019 and offers energy storage to SRP underneath a 20-year settlement. The utility has enlisted a number of giant system integrators to ship initiatives in its area of duty in Arizona, together with Fluence and Tesla.

AES Company offered Energy-Storage.information with an announcement from Mark Miller, AES Market Enterprise Chief and Basic Supervisor for California who has been on website overseeing the response:

“On Monday, April 18, smoke was detected contained in the Gilbert (the identify of the holding firm of the mission) battery energy storage facility in Chandler, Arizona. Security techniques responded correctly, and the native hearth division was dispatched. The hearth division successfully managed the scenario till Sunday, Could 1, when the power was deemed combustion free, and administration of the constructing was returned to AES.”

“AES specialists and consultants stay on the website because the scenario shifts to the investigation part. When secure circumstances allow, we’re dedicated to conducting a full evaluation.”



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Akuo commissions largest BESS projects in Tonga and Martinique

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Akuo Tonga Martinique battery storage


French renewable energy producer and developer Akuo Energy has commissioned a 29.2MWh battery energy storage system (BESS) in Tonga, a number of weeks after powering up a 19MWh mission in Martinique.

The Tonga 1 and Tonga 2 storage programs are on Tongatapu, the primary island within the archipelagic South Pacific nation, and hook up with the grid of public operator Tonga Energy Restricted.

The 2 whole 16.5MW of energy and 29.2MWh of energy making this the most important BESS within the South Pacific, Akuo stated. Each particular person programs comprise Akuo’s Storage GEM modular containerised answer, three for Tonga 1 and 5 for Tonga 2.

Tonga 1 is a 9.3MW/5.3MWh designed to enhance grid stability, with a period of simply 34 minutes. Tonga 2 is a 3.3-hour system with 7.2MW/23.9MWh of energy, designed primarily for load shifting.

They’ve already allowed Tonga to double its renewable energy capability with the latest addition of 6MW in {solar} PV energy, bringing the nation’s renewable combine to round 20%. It goals for 70% by 2030.

The BESS additionally demonstrated its resilience throughout a tsunami in January which devastated the shoreline and lower the nation off from the skin world. The BESS continued working and helped stabilise the grid within the days following the pure catastrophe.

The 2 tasks totalled US$53 million in funding, of which 56% was from the UN’s Green Local weather Fund, 23% from the Asian Growth Financial institution, 10% from the Tongan authorities, 6% from Tonga Energy and 5% from the Australian authorities.

Largest storage system in Martinique

The announcement comes a month after Akuo commissioned a 19MWh BESS on the French abroad territory of Martinique within the Caribbean, though the press launch stated its contractual efficient quantity is 12MWh.

The Madina Storage facility additionally makes use of Akuo’s Storage GEM containerised options and is a lithium-ion-based BESS (Akuo didn’t reveal the chemistry for the Tonga facility).

The BESS linked to the island’s grid, operated by French state-owned energy firm EDF, will allow higher penetration of renewable energy. It would present load shifting capabilities in addition to grid frequency regulation providers within the occasion of a sudden lack of energy.

French business financial institution Groupe BPCE was the power’s banking associate whereas listed funding agency Methanor offered it with fairness financing.

Eric Scott, chairman and co-founder of Akuo, stated: “We’re very proud to place this storage facility into service, proof if it have been essential of the important thing position this expertise performs in energy networks’ efficiency and of its complementarity with the manufacturing of renewable energy.”

Akuo was based in 2007 by the founders of Excellent Wind after they bought their complete wind portfolio to Spanish multinational electric utility Iberdrola. The corporate won solar tenders on French overseas territories last year and has invested €2.8 billion (US$3 billion) for a complete capability of 1.4GW renewabele energy capability (operational or in improvement).



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Trina Storage-Power Electronics partnership targets 1GWh BESS deployments by end of next year

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Trina Storage-Power Electronics partnership targets 1GWh BESS deployments by end of next year


Trina Storage, the energy storage division of {solar} PV producer Trina {Solar}, has shaped a partnership with {solar} inverter producer Energy Electronics to collectively deploy battery storage.

The vertically-integrated Chinese language PV firm – a member of the ‘Solar Module Super League’ of main producers as coined by our colleagues over at PV Tech – mentioned at present that it’s going to deploy over 1GWh of battery energy storage system (BESS) installations by the top of 2023 that are built-in with Spain-headquartered Energy Electronics’ PCSK inverters.

The 2 firms signed a letter of intent (LOI) for the settlement to hold out the deployments collectively ultimately week’s Intersolar Europe present in Germany.

On the occasion, Trina Storage was showcasing Elementa, its grid-scale BESS resolution and launching it officially to the mainland European market, though it has already been utilized in a efficiently commissioned 50MW BESS project in Cambridgeshire within the UK.

The corporate mentioned a US launch is coming quickly.

Elementa is a fully-integrated and modular resolution designed for simple plug and play set up. It contains a standardised design outfitted with lithium iron phosphate (LFP) battery cells and liquid cooling expertise. Trina Storage is presently constructing out 3GWh of annual LFP cell manufacturing capability at services in China.



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Structure & offtake challenges for UK’s 7.2GW co-located storage pipeline

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Structure & offtake challenges for UK's 7.2GW co-located storage pipeline


Co-located storage is prone to develop as a proportion of the UK market with 7.2GW of tasks within the pipeline, however structuring offers and offtake agreements presents a fancy problem in response to a venture developer.

The pairing of {solar} or wind with storage is at a reasonably early stage within the UK. Lower than 10% of its 1.7GW of operational battery energy storage methods (BESS) is co-located with wind or {solar}, totalling 158MW. And most present co-located storage tasks have two separate grid connections with a restricted quantity of shared infrastructure.

However there are 317 tasks totalling 7.2GW co-located with {solar} or wind within the improvement pipeline, round one fifth of the entire (figures from {Solar} Media’s UK Battery Storage Projects Database).

Undertaking builders are more and more taking a look at creating websites which share grid capability however this presents a myriad of complicated challenges together with structuring offtake agreements, as our supply – an worker with a senior administration duty for energy storage at a serious worldwide renewables and storage developer – defined, talking anonymously.

Grid connection queue

“Clearly, you want the import capability for battery storage. That’s a little bit of a problem, as a result of retrospectively including import capability to your present grid software may put you additional again within the queue, which isn’t a great place to be in,” they stated.

“With the intention to maximise the return on funding of a co-located venture the battery must pursue numerous income streams which depend upon grid import capability. Let’s say you have got already a PV venture in improvement and have a grid connection supply. Then you definitely wish to add storage and request extra import capability. Relying on the DNO and particular connection this might considerably delay the connection date and improve the quantity of forecasted curtailment. So you have to be properly privy to the right way to strategy this matter”. 

SPV construction

The second query when creating a co-located venture is deciding the right way to construction the deal into particular goal automobiles (SPVs), difficult by the actual fact you have got two property plus a grid connection, as our supply defined.

“There are principally two choices: you may have the grid connection, {solar} and storage multi functional single SPV which lets you optimise the plant extra holistically by for instance saving capex on infrastructure and know-how gear and likewise to cost the battery from {solar}. Or, if you wish to have doubtlessly two totally different homeowners for PV and battery you’d most likely have three SPVs. One grid SPV which offers capability to the PV SPV and the battery SPV.” 

co-located storage
Co-location with wind (pictured) is prone to grow to be extra prevalent in future within the UK because the market’s priorities shift to extra energy-based functions. Picture: Fluence.

Offtake settlement

However the offtake settlement is the actually difficult half, our supply defined, and above all must be as easy and de-risked as attainable for the longer term long-term proprietor.

“You’re combining the standard utility world of 5 or 10 yr energy buy agreements (PPAs) for the PV with AI algorithm-based totally automated buying and selling and bidding methods introduced by small startups for the BESS and the query is the right way to work that out,” they stated.

“From the venture SPV authorized entity perspective, you don’t need two unbiased contracts which then need to battle for the grid connection after which if one thing goes mistaken finger pointing begins, proper? From the long run proprietor’s perspective, this isn’t engaging. So you have to discover a manner that duties and all what-ifs and potential dangers are very clarified and minimised.”

“Ideally, you have got one celebration who provides you one contract providing each; is in-house able to providing you with a long run mounted PPA worth, with the in accordance steadiness sheet or credit score worthiness to again this, but in addition is ready to do the flowery new AI stuff with batteries to create revenues on the flexibleness aspect.”

This mix a minimum of within the UK market is considerably uncommon, they added, and so that you sometimes have to discover a mixture of gamers who supply a mixed contract. Energy-Storage.information has not too long ago interviewed among the predominant BESS optimisers on the market like Habitat Energy and Flexitricity that take property into market on behalf of their shoppers.

Our supply: “There are normally two predominant choices: you may go and choose your two most well-liked events from each worlds and have them working collectively on the identical grid connection. They then additionally have to have to ascertain agreements between one another.”

“One key danger to take care of here’s what if one of many two events falls away which obligations and pursuits does the opposite celebration have to interact with a alternative celebration as shortly as attainable to make sure you don’t have a stranded asset? It’d look much less dangerous to have a single path to market supplier who takes on each PV and storage, however then you’re doubtlessly not in a position to choose the perfect of each worlds.”

Most co-located storage tasks pair with {solar} PV as wind requires rather more biking and likewise a a lot bigger battery. Anesco has delivered a number of giant co-located tasks whereas BayWa r.e. acquired tasks from Concord Energy and JBM in April 2022 and July 2021, respectively.

Co-location with wind might are available just a few years when the market strikes extra in direction of energy buying and selling, our supply added. Some 80-85% of BESS revenues are nonetheless from grid ancillary providers according to Gore Street Capital, one of many main traders available in the market.



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