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Energy storage deployment within the US is rising at an outstanding tempo. However the urge for food for storage is way better than the flexibility to construct, and getting grid interconnection rights is usually the most important hurdle. As reported by Energy-Storage.information again in March, a new multi-stakeholder project aims to correct that. Gwen Brown, communications director for the US Interstate Renewable Energy Council, which has led the mission, explains in additional element.

Energy storage is a crucial piece of the puzzle within the transition to an electrical grid powered by excessive ranges of renewable energy. Storage makes it doable to seize the intermittent energy produced by distributed energy sources (DERs) like {solar} and wind and use it when it’s most wanted.

Nonetheless, most of the most beneficial traits of storage can’t simply be utilised on the distribution grid as we speak. That’s as a result of most state-level interconnection guidelines—the foundations that govern whether or not and the way DERs are permitted to connect with the grid—haven’t been up to date to cope with energy storage programs in a manner that maximises buyer flexibility and ensures the continued protected and dependable operation of the grid.

For instance, some DER programs with ESS don’t ship any electrical energy again to the grid (non-export programs); others could also be designed in order that the energy they do ship to the grid by no means exceeds a sure degree (limited-export programs) or is exported solely throughout particular occasions of the day. But most interconnection procedures use outdated guidelines of thumb for assessing the grid impacts of ESS that fail to account for these capabilities.

This and different technical and regulatory obstacles make the interconnection course of difficult for energy storage, slowing market progress and hindering our means to deploy these programs on the tempo wanted to fulfill local weather and clear energy targets.

A brand new suite of actionable suggestions for regulators and utilities goals to alter that. The mission crew is led by the Interstate Renewable Energy Council (IREC) with assist from the U.S. Division of Energy {Solar} Energy Applied sciences Workplace, contains the Electric Energy Analysis Institute (EPRI), the {Solar} Energy Industries Affiliation (SEIA), the California {Solar} & Storage Affiliation (CALSSA), utilities New Hampshire Electric Cooperative Inc. (NHEC) and PacifiCorp, and legislation agency Shute, Mihaly & Weinberger, LLP (SMW).

The Toolkit and Guidance for the Interconnection of Energy Storage and Solar-Plus-Storage gives vetted, consensus-based options to eight key regulatory and technical obstacles to the interconnection of energy storage and solar-plus-storage programs on the distribution grid. It’s based mostly on extra thana 12 months of analysis and evaluation and contains mannequin language that utility regulators can draw from to replace state interconnection guidelines in various states and markets throughout the US.

Adoption of those really useful options can have a major affect on what number of distributed energy sources (DERs), like residential and business {solar} PV programs, may be added to the grid. For instance, unique analysis for the Toolkit discovered that when energy storage is used to regulate the export of energy from DERs, the grid can host extra DER capability. In probably the most pronounced circumstances, modeling and simulation analysis discovered that utilizing storage to restrict DER export (one of many points the Toolkit gives steerage on) can double accessible DER capability on a circuit!

This text gives a high-level overview of the challenges addressed by this Toolkit and their really useful options.

Updating interconnection procedures to be inclusive of storage

One of the vital fundamental obstacles to interconnecting energy storage programs on the distribution grid is the truth that many interconnection guidelines don’t point out energy storage or specify how present guidelines and associated paperwork apply to storage programs.

Interconnection guidelines want to obviously state that the procedures apply to the interconnection of latest standalone ESS and ESS paired with different mills, reminiscent of {solar}. In addition they ought to outline ESS and associated phrases essential to enabling the distinctive working capabilities of storage (e.g., “non-export,” “limited-export,” and “working schedule,” to call just a few), and the necessities for utilizing associated gear and capabilities. Associated interconnection paperwork, reminiscent of software types, research agreements, and interconnection agreements, additionally must be up to date accordingly. Chapter II of the Toolkit gives steerage on how regulators and utilities could make these adjustments.

Interconnection guidelines must recognise management of energy export by ESS

The power of ESS to restrict the export of energy to the grid is one in all its most beneficial traits. That’s as a result of energy export is a significant component in how a system will affect the grid and whether or not it may be interconnected with out the necessity for distribution system gear upgrades.

One motive interconnection guidelines fail to acknowledge this performance is that there was an absence of consensus on acceptable strategies that can be utilized to regulate export in limited-and non-export programs. To permit a system to connect with the grid, utilities must know that the export management technique is protected and dependable, but it surely’s not sensible for a utility to individually overview each such system.

Chapter III gives steerage on acceptable strategies that may be trusted and relied upon by each the interconnection buyer and the utility. With such steerage, interconnection guidelines may be up to date to specify acceptable export-control strategies for energy storage. This paves the best way for fixing one other crucial problem within the storage interconnection course of: how the system’s grid impacts are evaluated.

As a result of most interconnection procedures have been drafted with out export controls in thoughts, the overview processes they require additionally must be up to date to specify how limited- and non-export tasks can be reviewed. The Toolkit additionally gives steerage on how utilities can appropriately consider the impacts of those programs, quite than counting on conservative but inaccurate working assumptions that overestimate the grid impacts of storage programs (Chapter IV).

Understanding inadvertent export

One other barrier to unlocking ESS capabilities has been concern in regards to the impacts of inadvertent export. Inadvertent export is energy that’s unintentionally exported from a DER when load drops off out of the blue, reminiscent of when an electrical water heater switches off, earlier than the export management system responds to the sign to restrict or cease export.

Till now, there was an absence of readability in regards to the grid impacts of inadvertent export from limited- and non-export programs, reminiscent of voltage or thermal disturbances that might have an effect on energy high quality. This has made it tougher for utilities to judge such impacts when a system with energy storage requests to interconnect.

Authentic analysis carried out for the Toolkit (detailed in Chapter V) sheds gentle on the grid impacts of inadvertent export and the way they need to be accounted for when evaluating export-controlled ESS.

Because the Toolkit explains, “Time-series evaluation of an city feeder and a rural feeder have been carried out with exporting {solar} photovoltaic (PV) programs and non-exporting storage distributed alongside the feeders to grasp the vary of worst-case impacts.” The analysis measured the response occasions of energy management programs—used to regulate the export of energy from an ESS—to see how shortly inadvertent export is stopped by accessible merchandise in the marketplace. The response occasions discovered have been “beneath any identified thresholds for concern” for thermal impacts.

The analysis additionally demonstrated that “feeders can host extra DER capability if the DER is export-controlled…. Whereas each the city and rural feeder assessments supported this discovering, the extent to which internet hosting capability may be elevated will rely upon feeder traits, in addition to the situation and measurement of the exporting DER.” On the city feeder, DER capability “might be doubled with export limiting (inadvertent export) in comparison with regular export.”

Enhancing ESS interconnection with grid information, choices for design adjustments, requirements alignment, and extra

The Toolkit addresses intimately many extra present obstacles to storage interconnection (eight whole) and gives mannequin rule language for incorporating really useful options. These embrace:

  • The necessity for better transparency about distribution grid gear and constraints to allow mission builders to decide on acceptable places or system designs to keep away from the necessity for pricey distribution system upgrades (Chapter VI).
  • The necessity for pathways to permit mission builders to switch the system design of their mission, reminiscent of by limiting export with ESS, as a way to keep away from the necessity for upgrades. At present, builders should forfeit their place within the interconnection queue as a way to make design adjustments (Chapter VII).
  • The necessity to incorporate interconnection requirements (just like the suite of IEEE 1547TM requirements) into state interconnection guidelines. These requirements assist make sure that gadgets are interconnected safely and reliably, and allow utilities to belief gadget efficiency on the grid with out the necessity for custom-made overview processes (Chapter VIII).
  • Lack of outlined guidelines and processes for the analysis of working schedules, by which ESS operates on a predetermined schedule, by way of the quantity of energy imported and exported and when that import or export happens (Chapter IX).

Every of those points represents an necessary step in bettering the interconnection course of in order that the distinctive traits of energy storage can assist the transition to a cleaner electrical energy grid.

Only the start for reforming storage interconnection

The Toolkit and Guidance for the Interconnection of Energy Storage and Solar-Plus-Storage gives beforehand unavailable insights on how the interconnection course of for energy storage may be improved. It gives actionable options for regulators and utilities that may make energy storage interconnection extra environment friendly and allow extra DERs on the grid. 

Over the approaching 12 months, IREC and companions will conduct intensive coaching and academic outreach to drive adoption of the options throughout the nation. Events serious about receiving coaching or extra info on the Toolkit can contact the accomplice crew via the Toolkit website.



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UN calls for ‘global coalition on battery storage’

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UN calls for ‘global coalition on battery storage’


As the worldwide local weather disaster unfolds, António Guterres, secretary-general of the UN, has highlighted the essential position battery storage can play in tackling it.

Guterres issued a stark warning yesterday in regards to the “dismal litany of humanity’s failure to sort out local weather disruption” in a speech during which he set out “5 crucial actions to jumpstart the renewable energy transition”.

Talking on the launch of the World Meteorological Organisation’s State of the Global Climate 2021 Report, Guterres described the worldwide energy system as “damaged” and “bringing us ever nearer to local weather disaster”. He known as on the world to “finish fossil gas air pollution and speed up the renewable energy transition, earlier than we incinerate our solely dwelling”.

Guterres proposed 5 crucial actions to jump-start the renewable energy transition. The primary of those was treating renewable applied sciences corresponding to battery energy storage methods (BESS) as “important and freely-available international public items” by “eradicating obstacles to data sharing and technological switch”, together with mental property constraints.

“Storing renewable electrical energy is commonly cited as the best barrier to the clear energy transition,” mentioned Guterres as he known as for a world coalition on battery storage to fast-track innovation and deployment.

The speech was delivered on the identical day the European Union revealed its draft proposal for RePower EU, its plan to scale back after which finish dependence on fossil fuels imported from Russia. The plan contains some point out of energy storage, however has stopped far short of the coherent strategy and deployment targets many had hoped for.

To learn the total model of this story, go to PV Tech.



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Urban Electric and Pine Gate sign MOU for 4.5GWh of zinc batteries

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City Electric Energy has signed a memorandum of understanding (MOU) with developer Pine Gate Renewables to produce the latter as much as 4,550MWh of its zinc batteries over the subsequent 5 years.

Pine Gate may have preferential phrases for buying City Electric’s patented zinc alkaline batteries over the subsequent 5 years for its co-located and standalone storage initiatives. Pine Gate has over 1GW of working {solar} property within the US and a 16GW growth pipeline.

City Electric provides its batteries underneath the Ohm label to residential and business & industrial (C&I) prospects but in addition has a utility-scale providing known as Zeus. The zinc alkaline batteries have a number of benefits over lithium-ion, together with decrease integration prices, extra plentiful provide of core supplies, a much less problematic provide chain and decrease hearth danger, the corporate stated.

An organization brochure says the Zeus battery energy storage system (BESS) has an influence vary of 250-1000kW and a length of 2-24+ hours. Utilizing the instance of a five-hour, 760kw/3,800kWh system, it says the round-trip effectivity can be 86% – decrease than lithium-ion which is usually within the excessive 90s.

Ann Marie Augustus, City Electric Energy’s VP operations, stated: “As we section out fossil fuels and add distributed renewables, demand will solely develop for changing outdated battery expertise with cost-effective energy storage that’s safer, longer-lasting, and extra environmentally pleasant. We provide non-toxic, utility-scale battery energy storage with no thermal runaway hearth danger, at a value and environmental footprint lower than normal lithium-ion or lead batteries.”

The deal isn’t Ashville-headquartered Pine Gate’s first use of zinc batteries. In November 2021, it selected one other zinc battery producer’s expertise, Eos Energy, for a 500kWh standalone battery energy storage system (BESS) in Utah. That contributed to Eos Energy’s strong first quarter 2022 results through which gross sales grew year-on-year by an element of 20.

Zinc battery chemistry, which marks the start line of battery expertise’s historical past, is rising in recognition as a substitute for lithium-ion. An organization associated to the US’ largest homebuilder D R Horton lately chose Salient Energy’s zinc-ion technology for installation in up to 200,000 homes citing issues with lithium-ion.

The expertise has discovered a candy in being a backup energy for information centres, wrote Dr Josef Daniel-Ivad from the the Zinc Battery Initiative which represents corporations together with City Electric, Salient and Eos, in a guest blog for Energy-Storage.news. City Electric lately struck a deal to switch 1,000kWh of lead-acid batteries on the San Diego Supercomputer Center (SDSC).



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Li-Cycle opens third battery recycling facility at ‘strategic’ southwest US location

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Lithium-ion battery recycler Li-Cycle has opened its third recycling facility, in Arizona.

The power within the city of Gilbert, Arizona, has the capability to course of as much as 10,000 tonnes of battery manufacturing scrap and end-of-life batteries, and is the primary to make use of Li-Cycle’s proprietary expertise to straight course of full EV battery packs. Will probably be in a position to recycle the packs with out dismantling them manually, making it safer, extra sustainable and labour-efficient, the corporate mentioned.

Arizona made sense as a location due to its emergence as a key a part of the US EV provide chain, in addition to its proximity to California, whose massive EV client and energy storage market ought to present an rising provide of end-of-life batteries, Li-Cycle added. The corporate solely introduced its intention to build the Arizona plant in April 2021, making it a fast turnaround for it to enter motion.

The Gilbert ‘Spoke’ facility is strategically situated near Li-Cycle’s present battery and manufacturing scrap provide community within the Southwestern US. It’s a part of the corporate’s Hub and Spoke mannequin, with a significant Hub in Rochester, New York, anticipated to return on-line in 2023.

Spoke amenities will ship black mass – containing vital metals like lithium, cobalt and nickel – which can then be processed on the Rochester Hub, which can have the capability to course of 35,000 tonnes of fabric a yr.

A fourth Spoke facility in Alabama is ready to open within the third quarter of 2022.

The announcement comes only a week after pure sources big Glencore invested US$200 million into Li-Cycle which constructed on a US$100 million investment by Koch Strategic Platforms a few months prior. The corporate has additionally secured an off-take and provide deal in addition to a mixed US$50 million funding from LG Energy Solution and LG Chem, which it closed just a few days in the past.

The corporate’s share value at the moment sits at US$7.60, up round 10% since earlier than yesterday’s announcement, leaving it with a market cap of US$1.3 billion. It went public in a SPAC merger last year.

Its Arizona facility is the second main recycling facility to have began operations this week, with Northvolt and Hydro’s Hydrovolt facility in Norway also launching.

Elsewhere within the US, the nation’s largest single-site battery recycling facility is below development close to EV battery gigafactories in Georgia, by startup Ascend Parts, which expects to have it up and working this August. One other US recycling and sources specialist, Redwood Supplies, has mentioned it’s already receiving about 6GWh of lithium batteries for recycling each year at its facility close to Tesla’s Gigafactory One in Nevada.



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