General Updates

Date: September 19, 2026 To, To, General Manager The Manager Department of Corporate Services Listing Compliance Department BSE Limited National Stock Exchange of India Limited Listing Department Exchange Plaza, Plot No. C/1, Phiroze Jeejeeboy Tower, Dalal Street, G Block, Bandra - Kurla Complex, Fort Mumbai-400 001 Bandra (East), Mumbai 400 051 Scrip code: 543230 Symbol: ADVAIT Sub: - Disclosure under Regulation 30 of the SEBI (Listing Obligations & Disclosure Requirements) Regulations, 2015 – Master Supply Agreement (“MSA”) agreement executed between Advait Battery Ecosystems Private Limited and Hithium Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that Advait Battery Ecosystem Private Limited (“ABEPL”), a step down subsidiary company of the Advait Energy Transitions Limited (“the Company”), has entered into a Master Supply Agreement (“MSA”) with Hithium for purchase of lithium iron phosphate (LFP) prismatic battery cells, structured to support cell offtake of up to 1 GWh over the next year on September 18, 2026. Also further note that, the details required under SEBI Circular No HO/49/14/14(7)2025-CFDPOD2/ I/3762/2026 dated January 30, 2026, for Corporate Announcement filed under Regulation 30 of SEBI (LODR) Regulations, 2015 is enclosed herewith. Kindly take the same on your records. Thanking you. Yours faithfully, For Advait Energy Transitions Limited (Formerly known as Advait Infratech Limited) Deepa Fernandes Company Secretary & Compliance Officer FCS 13015 Encl: As above Annexure – 1 Additional Details Required under SEBI Circular for Corporate Announcement filed under Regulation 30 of SEBI (LODR) Regulations, 2015 SR. No. Particulars Details Advait Battery Ecosystem Private Limited Name of the entity(ies) with whom 1. (“ABEPL”) and Hithium, a BloombergNEF Tier 1 agreement/ JV is signed; Manufacturer 2. Area of agreement/JV; Master Supply Agreement (“MSA”) 3. Domestic/International; International 4. Share Exchange Ratio / JV Ratio; Not Applicable For purchase of lithium iron phosphate (LFP) Scope of business operation of agreement prismatic battery cells to support ABEPL’s / JV; upcoming cell-to-container Battery Energy Storage System (BESS) assembly facility The consideration is yet to be paid. However the Details of consideration paid / received contractual value is 49.5 $/kWh up to 350 MWh. in agreement / JV; however further prices will be decided based on receipt of projects in Future Under the agreement, Hithium will supply 314 Ah Significant terms and conditions of LFP prismatic cells, with the arrangement agreement / JV in brief; structured to support cell offtake of up to 1 GWh over the next year Whether the acquisition would fall within related party transactions and whether the promoter/ promoter group/ group 8. companies have any interest in the entity Not Applicable being acquired? If yes, nature of interest and details thereof and whether the same is done at “arm’s length”; For Hithium : As per First Half of 2025 (H1 2025) - Hithium reported that its net profit exceeded RMB 100 million (~$14 million USD), and net cash flow from operating activities surpassed RMB 1 billion 9. Size of the entity(ies); (~$140 million USD) For Advait Battery Ecosystem Private Limited (“ABEPL”): ABEPL is incorporate on 27.04.2026. 10. Rationale and benefit expected. Refer Annexure - 2 FOR IMMEDIATE RELEASE Annexure - 2 Advait Group Signs Landmark 1 GWh Cell Supply Agreement with HiTHIUM This Master Supply Agreement establishes a BloombergNEF Tier 1 partner as Advait strengthens domestic sourcing for utility-scale, commercial and industrial energy storage as for the Advait Gangad manufacturing unit Ahmedabad, India, September 18, 2026: Advait Battery Ecosystem Private Limited (“Advait Group”), a subsidiary company of BSE and NSE-listed parent company, Advait Energy Transitions Limited, announced that it has entered into a Master Supply Agreement (MSA) with HiTHIUM, a BloombergNEF Tier 1 global energy storage manufacturer, for the supply of lithium iron phosphate (LFP) prismatic battery cells. The agreement anchors cell supply for Advait’s upcoming 2.5 GWh annual capacity cell-to-container Battery Energy Storage System (BESS) assembly facility and is structured to support cell offtake of up to 1 GWh over the next year, establishing a dependable, high-volume supply chain as Advait scales domestic BESS assembly for grid-scale and commercial and industrial energy storage applications across India. Under the agreement, HiTHIUM will supply its 314 Ah LFP prismatic cells to Advait, bringing one of the most widely deployed cell platforms in global energy storage into Advait’s domestic manufacturing ecosystem as the company builds capabilities spanning module and pack assembly, container integration and system commissioning. Commenting on the agreement, Bhushan Shahane, Chief Operating Officer, Advait Battery Ecosystem Private Limited, said: “This partnership with Hithium reflects our belief in partnering with the best: the best cell technology, the best quality and the best service available in the market today. As we scale our 2.5 GWh BESS assembly capacity, a dependable, world-class cell supply chain is central to our ability to deliver cost-optimised, high-performance energy storage solutions to customers across India.” Hithium is recognised as a BloombergNEF Tier 1 global energy storage manufacturer and is among the leading energy storage battery cell manufacturers globally. The company supplies battery cells and energy storage systems for utility-scale, commercial and industrial, and residential applications across international markets. The agreement establishes Hithium as a key cell supply partner for Advait as the company builds its domestic BESS manufacturing capacity. The cell supply arrangement is expected to provide Advait with access to high-volume LFP cells as its facility progresses towards commercial production. “We partnered with Hithium because they represent the gold standard in cell manufacturing: proven quality, consistent performance and a track record with some of the world’s most demanding energy storage developers. Bringing that standard into our supply chain lets us offer the Indian market a cost-optimised solution without compromising on quality, performance or service,” Mr. Shahane added. Strengthening India’s Domestic Energy Storage Manufacturing Base Advait’s 2.5 GWh BESS cell-to-container assembly line, currently under development, is central to the company’s strategy of building an integrated, India-based battery energy storage manufacturing ecosystem. The planned capabilities span cell sourcing, module and pack assembly, container integration and system commissioning, providing an integrated manufacturing framework for BESS applications. The Hithium agreement provides a cell supply framework as Advait prepares to scale production at the facility. With an offtake structure of up to 1 GWh over the next year, the agreement aligns cell sourcing with the planned ramp-up of Advait’s domestic assembly capabilities. Advait’s collaboration with Hithium also builds on the company’s broader strategy of developing an integrated BESS supply chain through specialised technology partnerships. Advait Battery Ecosystem has already entered into a strategic collaboration with Adaptive Engineering for engineering design, Energy Management System (EMS) architecture, PLC/SCADA and system integration capabilities. With Hithium now strengthening the critical cell supply side, Advait is advancing this partnership-led ecosystem to the next level, bringing together cell sourcing, EMS and engineering expertise, module and pack assembly, container integration and system commissioning under its growing domestic BESS manufacturing platform. The facility, in Gangad, Gujarat, is scheduled to begin commercial production soon. It is being developed to serve ut [Showing first 8,000 characters — download PDF for full document]