PK $]_rels/PK $] docProps/PK $]ppt/PK $] ppt/_rels/PK $] ppt/charts/PK $]ppt/charts/_rels/PK $]ppt/embeddings/PK $] ppt/media/PK $]ppt/slideLayouts/PK $]ppt/slideLayouts/_rels/PK $]ppt/slideMasters/PK $]ppt/slideMasters/_rels/PK $] ppt/slides/PK $]ppt/slides/_rels/PK $] ppt/theme/PK $]ppt/notesMasters/PK $]ppt/notesMasters/_rels/PK $]ppt/notesSlides/PK $]ppt/notesSlides/_rels/PK $]J9i[Content_Types].xml PK $]]] _rels/.rels PK $]RRdocProps/app.xml 0 0 Microsoft Office PowerPoint On-screen Show (16:9) 0 10 10 0 0 false Fonts Used 2 Theme 1 Slide Titles 10 Arial Calibri Office Theme Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10 PptxGenJS false false false 16.0000 PK $]3KdocProps/core.xml PptxGenJS Presentation PptxGenJS Presentation PptxGenJS PptxGenJS 1 2026-09-04T02:06:50Z 2026-09-04T02:06:50Z PK $] h   ppt/_rels/presentation.xml.rels PK $]Oݨ ppt/theme/theme1.xmlPK $]Πf ppt/presentation.xml PK $]Xppt/presProps.xml PK $]ppt/tableStyles.xml PK $]D >00ppt/viewProps.xml PK $]H7t!ppt/slideLayouts/slideLayout1.xml PK $]ђ77,ppt/slideLayouts/_rels/slideLayout1.xml.rels PK $]IIppt/slides/slide1.xml DRAFT REGULATION FOR PUBLIC COMMENT • CENTRAL ELECTRICITY AUTHORITYCEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment Regulations, 2026Mandatory grid-forming inverters and co-located energy storage for renewable energy plants23 Dec 2022Principal RegulationsOriginal Technical Standards notified03 Sep 2026Draft 2nd AmendmentPublished for public comment04 Oct 2026Comments DueTo Chief Engineer (Legal), CEAIssued under Section 177, Electricity Act 2003 • F.No. CEA-TH-17/1/2021-TETD Division • Gazette of India, Extraordinary, Part III—Section 4WHY ITMATTERSThis is a short, sharply-targeted amendment — just one new sub-regulation — but it directly changes the economics of every solar and wind project commissioning after mid-2027.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 1PK $]3 ppt/slides/_rels/slide1.xml.rels PK $].ppt/notesSlides/notesSlide1.xml 1PK $]:A*ppt/notesSlides/_rels/notesSlide1.xml.rels PK $]V:OOppt/slides/slide2.xml At a GlanceCore facts on the draft amendmentISSUING AUTHORITYCentral Electricity Authority (CEA), under Section 177(2)(e), Electricity Act 2003.WHAT IT AMENDSInserts new sub-regulation 106B(20) after 106B(19) of the 2022 Technical Standards Regulations.CORE REQUIREMENTGrid-forming control on inverters/BESS PCS, plus co-located storage for new solar & wind plants.WHO MUST COMPLYSolar & wind IPPs, BESS developers, inverter/PCS OEMs — for plants commissioned after 1 Jul 2027.COMMENT WINDOW30 days from public availability of the Gazette notification — CEA has set 04.10.2026 as the deadline.HOW TO COMMENTBy post to Chief Engineer (Legal), CEA, or e-mail to celegal-cea@gov.in.WHY ITMATTERSThe comment deadline is fixed — 04.10.2026 — not a rolling window, so drafting and sending comments early leaves room to follow up if CEA seeks clarification.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 2PK $]2- ppt/slides/_rels/slide2.xml.rels PK $]ppt/notesSlides/notesSlide2.xml 2PK $]xշ*ppt/notesSlides/_rels/notesSlide2.xml.rels PK $]." IIppt/slides/slide3.xml What's ChangingNew Regulation 106B(20) — inserted after 106B(19)A single new sub-regulation, in three parts1Grid-forming control≥15% of inverter capacity + all BESS PCS on new RE plants must have grid-forming control, per the CEA Connectivity Standards.2Co-located storage — Phase 1Ground-mounted solar & onshore wind commissioned after 1 Jul 2027 need an ESS ≥ 2-hour duration, sized at 10% of plant capacity.3Co-located storage — Phase 2For plants commissioned 1 Jul 2029–30 Jun 2031, the ESS duration requirement steps up to ≥ 4 hours, same 10% capacity sizing.WHY ITMATTERSThe amendment doesn't replace anything existing — it only adds 106B(20). Everything else in the 2022 Technical Standards Regulations stays exactly as it was.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 3PK $]W/ ppt/slides/_rels/slide3.xml.rels PK $]K |Őppt/notesSlides/notesSlide3.xml 3PK $]9 Y*ppt/notesSlides/_rels/notesSlide3.xml.rels PK $]}%>>ppt/slides/slide4.xml Applicability TimelineTwo commissioning-date thresholds set the requirement1 Jul 2027Grid-forming control + ESS (2-hr, 10%) becomes mandatory for new RE plants1 Jul 2029ESS duration requirement steps up to 4 hours (still 10% capacity)30 Jun 2031End of the 4-hour window — any further change to be notified separatelyBoth thresholds are keyed to COMMISSIONING date, not the date a PPA is signed or construction begins — a plant that breaks ground before 1 Jul 2027 but commissions after it is still covered.WHY ITMATTERSProjects currently in construction with a commissioning date anywhere near mid-2027 should check this timeline first — a few months' slippage can flip which regime applies.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 4PK $]` ppt/slides/_rels/slide4.xml.rels PK $]vsppt/notesSlides/notesSlide4.xml 4PK $]J *ppt/notesSlides/_rels/notesSlide4.xml.rels PK $]ϼ@;;ppt/slides/slide5.xml Requirement 1: Grid-Forming ControlInverters and battery PCSThe ruleAt least 15% of inverter capacity on a renewable energy power plant commissioned after 1 Jul 2027 must have grid-forming control. All PCS (Power Conversion System) units of any battery energy storage system on such a plant must also have grid-forming control. Compliance is measured against the technical requirements already specified in the CEA (Technical Standards for Connectivity to the Grid) Regulations.Why grid-forming, not grid-following• Grid-following inverters need a stable grid frequency/voltage reference to synchronise — they can't hold up a weak grid on their own. • Grid-forming inverters can set their own voltage/frequency reference, giving inertia-like support as coal capacity's share of generation falls. • As RE penetration rises, more grid-forming capacity is what keeps frequency stable during faults and sudden generation loss.WHY ITMATTERSThis effectively creates a new technical spec line item for inverter and BESS PCS procurement — developers should confirm OEM roadmaps for grid-forming-capable equipment now, not at commissioning.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 5PK $]5 ppt/slides/_rels/slide5.xml.rels PK $]W8ppt/notesSlides/notesSlide5.xml 5PK $]Qe*ppt/notesSlides/_rels/notesSlide5.xml.rels PK $]5-CLLppt/slides/slide6.xml Requirement 2: Co-Located Storage — Phase 1Applies to plants commissioned 1 Jul 2027 onwardGround-mounted Solar Power Plants and on-shore Wind Power Plants2 hrsMINIMUM STORAGE DURATIONThe ESS must be able to discharge continuously for at least 2 hours.10%MINIMUM STORAGE CAPACITYSized against the plant's installed capacity (MW), not its ESS energy rating.Co-locatedSITING REQUIREMENTThe ESS must be physically co-located with the generating plant, not remote.Worked example (as given in the draft): A 100 MW solar plant commissioned after 1 Jul 2027 needs a minimum of 10 MW of co-located storage, able to discharge for 2 hours.WHY ITMATTERSNote what's exempt: rooftop solar, floating solar, and off-shore wind are not named in this sub-regulation — only ground-mounted solar and on-shore wind carry the storage mandate.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 6PK $]ج+ ppt/slides/_rels/slide6.xml.rels PK $]zppt/notesSlides/notesSlide6.xml 6PK $]=|*ppt/notesSlides/_rels/notesSlide6.xml.rels PK $]d|e|eppt/slides/slide7.xml Requirement 2: Co-Located Storage — Phase 2The duration requirement steps up for 2029–2031 vintage plantsCommissioning windowStorage durationStorage capacity100 MW plant needs1 Jul 2027 – 30 Jun 20292 hours10% of capacity10 MW for 2 hours1 Jul 2029 – 30 Jun 20314 hours10% of capacity10 MW for 4 hoursWhat stays constant vs. what changes✓ Capacity sizing (10% of plant MW) is identical across both windows. ✓ The siting requirement (co-located, ground-mounted solar / on-shore wind only) doesn't change. → Only the discharge duration doubles — from 2 hours to 4 hours — for the 2029–2031 vintage. ⚠ Any future change to these percentages or durations will be separately notified by CEA — this isn't necessarily the final word.WHY ITMATTERSFor a project that might slip from 2029 into 2029–2031 timing, the storage bill roughly doubles in duration terms — worth flagging in financial models now, before it becomes a surprise at financial close.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 7PK $]F ppt/slides/_rels/slide7.xml.rels PK $])lppt/notesSlides/notesSlide7.xml 7PK $]|g*ppt/notesSlides/_rels/notesSlide7.xml.rels PK $]XXppt/slides/slide8.xml Who Is Affected — and HowSix stakeholder groups with distinct exposure to this amendmentSolar & Wind IPPs / DevelopersDirectly — bear the capex for storage + grid-forming inverters on every new project after 1 Jul 2027.BESS Developers & System IntegratorsNew demand for co-located storage sized to this rule, but also new PCS grid-forming spec to meet.Inverter / PCS ManufacturersMust have grid-forming-capable products certified and available well before mid-2027.Discoms / Distribution LicenseesBenefit from more grid-stable RE supply, but may see PPA tariffs rise to reflect added capex.Industry / Trade AssociationsRepresent aggregate sector concerns — timelines, cost pass-through, standardisation.General Public / ConsumersUltimate bill-payers if added compliance costs flow through tariffs — also benefit from grid reliability.WHY ITMATTERSEach of these six groups has a genuinely different stake — a one-size comment letter reads as generic to CEA; a stakeholder-specific letter reads as informed engagement.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 8PK $]6 ppt/slides/_rels/slide8.xml.rels PK $]iސppt/notesSlides/notesSlide8.xml 8PK $]pO*ppt/notesSlides/_rels/notesSlide8.xml.rels PK $]@DDppt/slides/slide9.xml How to Submit Your CommentsDeadline: 04 October 202604.10.2026Latest date for comments to reach CEA — by post or e-mail. Comments received after this date may not be considered.By postChief Engineer (Legal)Sewa Bhawan (North Wing), Room No. 622, 6th FloorR.K. Puram, New Delhi – 110066By e-mailcelegal-cea@gov.inCite F.No. CEA-TH-17/1/2021-TETD Division in the subject line.What to includeYour name/organisation · stakeholder category · specific clause referenced (Reg. 106B(20)) · the change sought and why.WHY ITMATTERSA comment that cites the exact sub-regulation number and proposes specific replacement wording is far more likely to be taken up than one that objects in general terms.Draft CEA (Technical Standards for Construction of Electric Plants and Electric Lines) 2nd Amendment, 2026Slide 9PK $]>$ ppt/slides/_rels/slide9.xml.rels PK $]qppt/notesSlides/notesSlide9.xml 9PK $]1*ppt/notesSlides/_rels/notesSlide9.xml.rels PK $]ߚ$$ppt/slides/slide10.xml Prepared for stakeholder comment-draftingA short amendment with an outsized impact on RE + storage economics from mid-2027 onward.Practical note: this deck is a reference and comment-drafting aid, not a substitute for the Gazette notification or a legal opinion. 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