Another Green Lantern Solar installation, Smuggler’s Notch Solar, located in Cambridge and Westman, Vt.

Green Lantern Solar, a renewable energy development and finance company focusing on commercial solar and energy storage systems, has completed a solar array for Chroma Technology, a Vermont-based certified B Corp in the precision optics industry. The 500 KW ground-mount array will produce enough energy to offset a third of Chroma’s annual energy expenses.

“This array will reduce Chroma’s operating expenses and have a real impact on its sustainability goals,” says Weston Martin, director of sustainable partnerships at Green Lantern Solar. “We’re gratified to work with companies like Chroma who are taking real steps to demonstrate how costs savings and a clean energy future can be achieved.”

The virtual net-metered solar project was developed, constructed, and is owned and operated by Green Lantern Solar; it is the company’s most recently completed in its home state of Vermont. The energy produced by the 1,870 solar module array is approximately 958,200 kWh annually.

“As a Certified Employee-Owned B Corporation Chroma is committed to sustainable and socially responsible business practices,” says Newell Lessell, CEO of Chroma. “This new solar array will enable us to significantly reduce our carbon footprint even as our business continues to grow.”

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Indiana Michigan Power (I&M), an American Electric Power (AEP) company, has issued a request for proposals (RFP) for facilities that will generate approximately 800 MW of wind energy and approximately 500 MW of solar power.

I&M’s invitation for bids offers private sector developers the opportunity to propose the best and most cost-effective projects to add significant renewable energy resources to I&M’s diverse generation fleet. I&M currently operates five solar farms and purchases power from four Indiana wind farms. In 2021, more than 80% of the energy I&M generated was emission-free.

The resources being sought in this RFP align with I&M’s Powering the Next Tomorrow plan.  Powering the Next Tomorrow was described in I&M’s Integrated Resource Plan, which was submitted to state utility regulatory commissions in both Indiana and Michigan earlier in 2022. I&M expects some of the new renewable resources to be online by as early as the end of 2024 and the full 1,300 MW to be online as early as the end of 2025.

“This RFP is designed to provide qualified developers the opportunity to bring forward wind and solar projects that can be used to serve Indiana Michigan Power customers,” says Dave Lucas, I&M vice president for regulatory and finance. “These new resources will combine with I&M’s existing generation to provide an even more diversified and flexible generation portfolio that will stabilize energy costs over time, stimulate economic growth, reduce emissions and take advantage of new technologies.”

Indiana Michigan Power’s RFP is open and non-discriminatory, which provides bidders the opportunity to submit proposals that incorporate battery storage, emerging technologies and other resources to supplement the portfolio and provide for optimum performance and affordability.

I&M prefers projects that will provide economic benefit to the states of Indiana and/or Michigan and encourages the use of local resources where feasible. The RFP also calls for successful bidders to use reasonable efforts to utilize small and diverse suppliers as subcontractors for work.

The RFP calls for solar projects within Indiana and/or Michigan, while wind projects – which require availability of large amounts of land – can be in those states as well as Illinois or Ohio.

Bids are due April 21, 2022. I&M plans to have contracts with the successful developers by the end of 2022. The selected resources will be submitted to state regulatory commissions in Indiana and Michigan for their review and approval.

I&M has engaged Charles River Associates to serve as an independent monitor for the RFP and incorporate input from groups representing customers and other stakeholders into the competitive procurement process.

Image: Photo by 🇻🇪 Jose G. Ortega Castro 🇲🇽 on Unsplash

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Vehicle-to-home (V2H) bidirectional charging allows customers to use their vehicle to power the home. Image: MaxPixel.

14 March 2022: Pacific Gas and Electric (PG&E) and General Motors (GM) pilot vehicle-to-home (V2G) battery solution

Investor-owned utility PG&E and automative giant GM are collaborating to pilot the use of GM electric vehicles (EVs) as on-demand power sources for homes in PG&E’s service areas.

The pair will test vehicles with bidirectional charging technology that can help power the essential needs of residential homes, with the first pilot lab test completed by this summer. They will then seek to conduct larger, customer location trials by the end of 2022, with the ultimate aim to develop a user-friendly customer experience for the novel technology.

“Imagine a future where everyone is driving an electric vehicle—and where that EV serves as a backup power option at home and more broadly as a resource for the grid. Not only is this a huge advancement for electric reliability and climate resiliency, it’s yet another advantage of clean-powered EVs, which are so important in our collective battle against climate change,” said PG&E Corporation CEO Patti Poppe.

The bidirectional hardware will include software-defined communications protocols that will enable power to flow from the EV to the home, automatically coordinating between the EV, home, and PG&E’s electric supply.

GM says that by end-2025 it will have more than 1 million units of EV capacity in North America. This could be equivalent to 50-100TWh of maximum stored energy based on a typical car battery pack size.

GM’s competitor Ford announced a similar trial last month in partnership with Sunrun, a US solar company. It claimed its F-150 electric truck is the first to offer the ability to provide power to a home during an electric outage, using the Ford Intelligent Backup Power platform.

While not exactly the same, V2H uses the same underlying technological solution as vehicle-to-grid (V2G) whereby EVs act as distributed energy resources (DERs) on the grid. However, the latter is beset by issues around carmarkers’ warranties on the battery life, car owners’ reluctant to share their battery with the grid, as well as regulatory complications.

15 March 2022: Greener Power Solutions buys 8.5MWh of mobile BESS

Dutch mobile battery energy storage system (BESS) solution provider Greener Power Solutions has ordered another 20 mobile battery units from supplier Alfen, bringing its total fleet to 60 with plans to increase that to 80 by the end of the year.

The new units supply 422 kWh in capacity, 25% higher than its existing units, and up to 318 kVA in power. In total, the new order represents 8.5MWh of new energy.

Greener Power rents out mobile BESS units for use at events, infrastructure projects, EV charging stations or even grid maintenance projects where standalone power is needed. The company has developed its own energy management system (EMS) software.

It claims to have now saved a total of 1 million litres of diesel through its activity, with diesel generators the thing it will typically be replacing. It also had the added benefit of not producing the noise pollution that generators do.

14 March 2022: Intilion launches fire protection feature for storage

Intilion, the lithium-ion energy storage arm of Germany’s Hoppecke battery company, has launched what it says is the first indoor commercial energy storage with a fire protection housing solution.

It claims it is the world’s first manufacturer to offer the option of a fire protection housing for an indoor energy storage system, its scalestac commercial LFP-based energy storage system. “We are making our scalestac the safest indoor commercial storage system available on the international market,” product manager Martin Peters claimed.

It says that if a cell catches fire, its fire protection housing solution prevents the fire from propagating to the entire system. It already offers such a fire protection for its medium-size scalebloc and large grid-scale scalecube products.

In a more detailed product manual for the scalebloc product, the company says that its fire protection housing is a mechanism housing for battery modules with prismatic cells. According to the manual, when heat flows through a cell with the risk of propagating to other cells, the housing ensures that:

resulting gases do not lead to an explosion or self-ignite as a result of the flying sparks from the lithium-ion cellsflying sparks are prevented surrounding battery modules are protected from propagation

It says that this means its BESS fulfils the requirements of the German application guide VDE-AR-E 2510-50 for stationary storage systems with lithium-ion batteries.

The scalestac was launched in Germany, Austria and Switzerland in June last year and ranges from 25 kVA to 400 kVA of power with a capacity from 123 kWh to 1 MWh. The charging and discharging power can be selected from 0.3C to 2C. It says the system is for “public utilities, municipalities, industrial companies, businesses and farmers”.

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Another Standard Solar project, Denmark Community Solar, located in New York

More than 28 municipalities and school districts across Jefferson, Lewis and St. Lawrence counties in New York are reducing their electricity costs and boosting the state’s clean energy portfolio with solar energy. Standard Solar and its partner, U.S. Light Energy, a New York-based distributed solar developer, have completed an 11.52 MW-combined solar project for members of the Tri-County Energy Consortium.

“Schools and community play a significant role in reaching students, parents, neighbors and local decision-makers to encourage clean energy action,” says Mike Streams, chief development officer at Standard Solar, the project’s owner and operator. “We’re proud to have provided the funding needed to make this project happen and applaud the Tri-County Energy Consortium for its efforts and commitment to solar.”

“Members of the Consortium will collectively save between $400-$500/k annually from the arrays,” states John Warneck, executive director of the Tri-County Energy Consortium.

The approximately $7.6 million project received more than $1 million in funding from the New York State Energy Research and Development Authority (NYSERDA) through NY-Sun, the state’s signature $1.8 billion initiative to advance the scale-up of solar and make solar energy more accessible to homes, businesses and communities. Each participating school district and local government will receive savings on their electric bills in proportion to the percentage of electricity they use out of the total for all participants.

“With their dedication to accelerating the adoption of solar energy, Tri-County Energy Consortium is setting the standard for other communities to follow,” comments Mark Richardson, CEO of U.S. Light Energy, the project’s developer. “This project’s success is underscored by the variety of challenges the team had to overcome, including changes in New York’s solar policy and the pandemic. Kudos to the team and the consortium for persevering and pushing forward a great project helping them create a pathway to achieve their renewable energy goals.”

“Building these projects has been a challenging three-year process,” adds Warneck. “But, even when things looked bleakest, U.S. Light Energy and Standard Solar kept at it and delivered for us. They are great partners.”

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Close-up detail of a BESS assembled by Northvolt Systems, for a site in Rocklunda, Sweden. Image: Northvolt.

European battery manufacturing startup Northvolt intends to build its third gigafactory on the continent in Schleswig-Holstein, Germany. 

The factory, Northvolt Drei, will have an annual production capacity of 60GWh and Northvolt has signed a Memorandum of Understanding (MoU) with the north German state and the Schleswig-Holstein town of Heide, it announced this morning. 

The lithium-ion battery manufacturing plant will open before the end of 2025, employing 3,000 people when fully ramped.

Northvolt claimed the region offers opportunities to make batteries sustainably: there is plenty of onshore and offshore wind generation nearby, as well as interconnectors to bring in renewable energy from Denmark and Norway. It’s an approach to siting the manufacturer has taken with its flagship production facilities in Sweden, where the share of renewable energy from wind and hydro is also very high.

The company has committed to sourcing 50% of its raw materials from recycled batteries by 2030 and claimed a lot of the raw materials used at Northvolt Drei will be sourced from recycled battery metals. Northvolt’s first recycling plant in Sweden made its first battery cell with fully recycled nickel, manganese and cobalt late last year.

A recycling plant on-site is also being planned at Heide to take batteries directly from EVs as well as being able to reuse byproducts from the production process. With Ascend Elements recently signing a deal to recycle battery scrap from SK’s two Georgia, US, battery factories, the signs are that battery recycling can embody a whole value chain approach. 

Founded in 2016, Northvolt has secured more than US$50 billion in orders for batteries from the 170GWh it currently has in its development pipeline. It is also developing a US$750 million R&D centre in Sweden. 

Its first gigafactory, Northvolt Ett in Skeleftea, Sweden, produced its first cells shortly before the end of 2021 and the company raised US$2.7 billion in investment last year alone, ranking it top among venture capital (VC) funding recipients in the battery storage sector according to analysis group Mercom Capital.

It had previously planned to build a battery plant in Germany in partnership with Volkswagen, a 16GWh facility in Saltzgitter, but Northvolt sold its share in the joint venture (JV) to the automaker, which is also one of its bigger customers. 

Last month Northvolt bought another site in Sweden to host a 100GWh cathode materials factory.

While the majority of Northvolt’s customer partnerships are in the automotive sector, the company has signed offtake deals with stationary storage customers including Fluence, with which Northvolt is co-developing battery energy storage systems (BESS) solutions.

US$200m factory for stationary storage division Northvolt Systems

It has also established its own stationary storage division, Northvolt Systems, and is building a BESS assembly plant in Gdansk, Poland.

It was not clear from Northvolt’s announcement today whether Northvolt Drei will be focused entirely on batteries for EVs and the company had not yet responded to an enquiry from Energy-Storage.news at the time of publication. 

Although 15 years ago many had tipped Europe to become a leading manufacturing centre for solar PV, it lost the opportunity, Northvolt Systems president Emad Zand wrote in an article for the newest edition of our quarterly journal PV Tech Power Vol.30. 

The continent could become a leading global supplier of battery storage, Zand wrote, but needs to embrace the opportunities of this new industry. Northvolt will invest US$200 million into building the BESS factory in Poland, according to Zand’s article. 

“Batteries are rapidly becoming a cornerstone technology of energy, mobility and societal functioning at large. For Europe to transition effectively to net zero, it requires battery systems of its own. But the opportunity is much greater. We missed our chance with solar PV, let’s not make the same mistake with batteries,” Zand wrote.  

Northvolt has previously suggested that around a fifth of its batteries could find their way into BESS projects. 

Benchmark Minerals has forecasted that Europe will reach 789.2GWh of lithium-ion battery gigafactory production capacity by 2030. It is currently far ahead of the US in its manufacturing ambitions, but steps are being taken by both public and private entities in the US to start catching up.

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Canadian Solar Inc. has started mass production of new 54-cell format module with 182 mm cell for residential, commercial and industrial rooftop solar systems. The shipment of this new format modules has already started this month.

CS6R-MS, the new module type under HiKu6 series, has the power output of up to 420 W and module efficiency of up to 21.5%. The CS6R-MS module is especially suitable for rooftop solar applications given its small module size (1.95 m² ˣ 30 mm), light weight (21.3 kg) and aesthetic design for homogenous appearance.

Canadian Solar provides various types of bifacial and mono-facial solar modules with power output in the range of 400~670W to global customers, including modules in 210 mm 66-cell and 60-cell formats, and 182 mm 72-cell and 54-cell formats. CS6R-MS offers 5~10 W higher power and around 0.5% higher module efficiency than the similar format PERC modules in market. The CS6R-MS module has the power up to 420 W and its module efficiency is up to 21.5%. Silver frame, black frame and all black modules are available. CS6R-MS module has been granted Level 1 certification according to the latest IEC 63126 standard, ensuring the module will generate electricity safely and durably even under the harsher rooftop operating conditions. CS6R-MS comes with an enhanced 25-year product warranty on materials and workmanship for residential rooftop applications.

Besides PERC cells, Canadian Solar is also developing CS6R module with HJT cells and expects to start commercial delivery in this April. CS6R has a module efficiency of up to 22.5% and power output up to 440 W.

“I am excited to announce that we have started mass production and delivered the first batch of the 54-cell modules of up to 420 W based on 182 mm PERC cells,” says Dr. Shawn Qu, chairman and CEO of Canadian Solar. “Moreover, the module with N-type HJT cells will be delivered in April. Our new products will further improve the energy yield and reduce the LCOE of residential, commercial and industrial rooftop solar systems, and meanwhile enable to offset more CO2 emissions.”

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Enphase Energy Inc. has acquired SolarLeadFactory LLC, which provides leads to solar installers. SolarLeadFactory has joined Enphase with the objective of substantially increasing lead volumes and conversion rates to help drive down the customer acquisition costs for installers.

Enphase is building a digital platform for installers that incorporates tools to design, permit, install, monitor and maintain solar and battery systems. This acquisition adds lead generation capabilities to that toolset. Enphase will continue to focus on integrating these tools into the digital platform so that its entire network of installers can realize maximum efficiencies in selling to homeowners.

“For the past two years, we have executed on our installer digital platform strategy with the acquisitions of Sofdesk for solar design software, DIN’s solar business for proposal and permitting services, 365 Pronto for O&M platform software, and now SolarLeadFactory for high-quality lead generation,” says Badri Kothandaraman, president and CEO of Enphase Energy. “We chose the SolarLeadFactory team based on their high-quality mindset and operational efficiency. We are pleased to welcome the team and SolarLeadFactory’s customers to Enphase.”

“I’m extremely excited about the ways that Enphase can help us reduce the installer’s customer acquisition costs, which are high in the U.S.,” states Clayton Cornell, CEO of SolarLeadFactory. “By leveraging Enphase resources, we’ll be able to rapidly accelerate improvements in our lead qualification and conversion efforts and deliver on our mission to help the industry increase install rates and more homeowners go solar.”

Image: “Solar install” by OregonDOT is licensed under CC BY 2.0

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South African grid operator ESKOM is pushing for large deployments of energy storage onto its grid.

South African grid operator Eskom is close to finalising over 800MWh of battery energy storage projects, but eyes are on another procurement which could be twice as big, a consultant told Energy-storage.news.

The grid operator announced last week that it was in the final stages of pre-contract discussions for 199MW/832MWh of battery energy storage system (BESS) capacity to be developed at eight sites. The assets will provide national peak shaving services for four hours a day plus ancillary services and local support, Eskom said.

The rollout is being backed by a US$58 million loan from the the African Development Bank’s Clean Technology Fund, as reported by Energy-storage.news. Eskom will own the assets but there will be a fixed operating and maintenance (O&M) period of five years with successful vendors.

But this round of procurement can be seen as effectively a testing ground where IPPs (independent power producers) and Eskom can test the battery storage technology on the grid at a discounted rate, said Adam Terry, Technical Director at Harmattan Renewables, which is working with IPPs on projects in the country.

He said that a new round of procurement for a much larger amount of energy storage should happen in the next few months. That one will also give the IPPs more control than the development bank-funded projects where Eskom set the specs.

“We don’t have much detail on these but expect it to be launched in the next couple of months for over 500MW. We’re expecting the new round to be like the REIPPPP model with IPP-developed sites where the IPP chooses where they’ll be, how large, the technology used etc. IPPs big and small are currently looking around at sites for it,” he said.

“The current round which is government/World Bank-backed is a great idea but you can see it as basically a test allowing Eskom/the IPPs to test the technology on the grid at a discounted cost.”

“Through the REIPPPP model the IPPs will bring down the cost and reduce the risk on ESKOM. In the REIPPPP program, the price by round 5 had fallen by three-quarters compared to round 1 (70% for wind and 89% for solar).”

Eskom uses the Renewable Energy IPP Procurement Programme (REIPPPP) to tender for new renewable energy projects. It aims to have 30GW of new, clean capacity on its grid by 2031, which would increase its renewables share of generation to more than 40%.

The standalone storage projects are in addition to around 430MWh/1300MWh of storage paired with renewable energy projects that won a decent chunk of a 2GW tender through its Risk Mitigation Independent Power Producer Programme (RMIPP). So overall, around 1GW of energy storage could come onto the grid through the three initiatives.

That risk mitigation tender was brought in by Eskom to plug an upcoming 2GW shortfall in embedded generation. The storage portion will help with intermittency but also allow the South African grid operator to defer investment in infrastructure.

“For example, currently there are no new projects allowed to connect into Northern Cape despite it being great for wind and solar. The reason for that is that when you connect the projects that are there, you need to allocate the same amount of grid capacity as the nameplate, i.e. a 140MW farm needs 140MW available even though it will rarely deliver this,” Terry said.

“Energy storage will allow them to only need, say, 100MW of grid connection and any generation above that can then charge the battery.”

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Gransolar’s E22 provides lithium-ion and vanadium flow battery-based energy storage. Image: E22.

Fluence’s software for optimising the market performance of energy storage and renewable energy assets will be used at the first battery storage project in Australia by Spain’s Gransolar Group. 

Gransolar’s energy storage division, E22, contracted the energy storage technology and services provider to deploy the Fluence IQ Bidding Application at a 5MW/7.5MWh battery energy storage system (BESS) asset in Longwarry, Victoria, Australia.

Fluence said this morning that the asset is expected to be energised in the middle of this year. The BESS is being deployed to support distribution network operator Ausnet during times of high congestion in summer through a Network Support Agreement.

During the rest of the year the battery system will participate in wholesale markets in the National Electricity Market (NEM) which offers opportunities for storage to deliver revenues through frequency control ancillary services (FCAS) and arbitrage.

It will be Fluence IQ’s job to forecast market activity and control the battery dispatch, maximising revenues from wholesale opportunities while ensuring the system is always ready to perform its distribution network support duties.

“As grid-scale energy storage plays an increasing role in Australia’s clean energy transition, we see a growing need for AI-based bidding software to manage these renewable assets,” Fluence chief digital officer Seyed Madaeni said.

“Co-optimising the full value stack of wholesale market participation simultaneously with the demands of a network support agreement is a complex task that requires a powerful software layer.”

While it is a relatively small project by either company’s standards, Fluence said the contract marks its software’s first use in the market for smaller grid-scale energy storage of 5MW or under, which it called an exciting and emerging market segment.

Gransolar meanwhile is developing around 1,000MWh of battery storage worldwide across its group companies.

Fluence added 250MW of Fluence IQ contracts in the first quarter of this year alone, adding to 2,744MW of contracts for the software signed during 2021. One of the software’s advantages as an offering is that it can be used to optimise renewable energy assets as well as energy storage.

In February Energy-Storage.news reported that it had been contracted for 320MW of wind and solar in Australia for the energy arm of telecoms company Telstra. A couple of weeks before that one of Fluence’s owners, AES Corporation, contracted for Fluence IQ to optimise a 1.1GW portfolio of US solar and storage assets. 

At the moment, the platform is only available in Australia’s NEM and the California market, but the company has said it is expecting to roll it out globally from this year. 

In an interview to mark the end of 2021, Fluence CEO Manuel Perez Dubuc told this site the company had seen “significant demand for digital products that optimise assets – both renewable and storage”.

“The business model and economics of combining energy storage plus services plus digital optimisation is powerful, and we expect interest in that type of combination offering to grow,” he said.  

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Opening of a distribution system-connected battery storage system in Delhi, India. Image: Tata Power DDL.

New guidelines for procurement and utilisation of battery energy storage systems (BESS) as assets for generation, transmission and distribution and ancillary services have been published by India’s government Ministry of Power.

The Ministry published the document last week, aiming to facilitate procurement of battery storage deployed either in combination with renewable energy or as standalone assets. It is a revised version of guidelines it first issued five months ago. 

The planning horizon for the optimal future energy mix should be around 10-12 years, which gives enough time to “gear up the systems and policies in the right direction,” the Ministry noted.

With the country’s Central Electricity Authority’s (CEA’s) modelling showing a need for 27GW/108MWh of battery storage and 10,151MW of pumped hydro energy storage (PHES) by 2029-2030, there is no time to waste. 

The guidelines also seek to ensure transparency and fairness in procurement processes as well as create a framework for intermediaries such as aggregators to sell and purchase power from BESS within and across the Indian state boundaries. 

They are also aimed providing standardisation and uniformity in processes and creating a risk-sharing framework for stakeholders, which will encourage competition and better bankability.

The Ministry suggests there should be eight defined business models for energy storage, including a revised and new model, whereby BESS developers or owners can sell a particular duration of storage from their asset and be compensated for it as capacity. 

Other business models include using storage to enable renewables assets to meet peak power and firm dispatchability requirements, BESS to maximise utilisation of transmission infrastructure or to manage distribution operations, BESS for ancillary services, balancing and flexibility and standalone BESS for arbitrage. 

The document establishes various parameters and methodologies for holding procurements, such as technical and financial eligibility criteria for participants, how to evaluate bids which will be designed in terms of total capacity of storage but can be made in power (megawatt) or energy (megawatt-hour) terms, how long the various procurement process steps should take, and so on. 

Storage developers and owners should attain financial close of their projects within 12 months of signing battery storage purchase agreements — which is an extension of the nine months proscribed in the previous iteration of guidelines.

India’s energy storage sector taking strides

The Ministry of Power’s latest clarification is likely to be welcomed by the energy storage industry and wider power sector as a next step in establishing a market for energy storage in India — in which interest is growing from both upstream and downstream sectors from manufacturing to end-use. 

Power Minister RK Singh has spoken on numerous occasions on the importance of battery storage to improving reliability of the grid and enabling the 500GW of new renewable energy India is committed to deploying by 2030. The Minister said last year that government-hosted tenders for energy storage systems will be held. 

A recent report co-authored by government think tank NITI Aayog highlighted the critical importance of batteries for India to reach net zero emissions by its 2070 target date and more pressing interim target of meeting 50% of energy use from non-fossil fuel sources by 2030. 

That report emphasised the role a domestic manufacturing value chain should play in the sector. It was written as India’s government launched a long-awaited drive to support up the creation of 50GWh of advanced chemistry cell (ACC) manufacturing lines in the country over five years. Bids totalling 130GWh of potential production capacity of batteries for EV, BESS and other applications were sent in. 

Meanwhile the Union Budget 2022-2023 announced in February included a provision to classify grid-scale energy storage as infrastructure, unlocking the availability of credit.

Just a few days before that happened, the Ministry of Power issued a clarification of the role of energy storage systems in the power sector, describing energy storage as “essential” to achieving the nation’s renewable energy and decarbonisation goals. 

International energy storage system integrator and technology provider Fluence — the company behind India’s first grid-scale BESS, a 10MW project completed as recently as 2019 — said it is forming a joint venture (JV) this year with major Indian independent power producer (IPP) ReNew Power to tap opportunities in the market. 

Also this year GE Renewable Energy opened a factory in Chennai, building equipment including inverters for solar-plus-storage and an integrated battery storage and power electronics solution. 

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