India's renewable-energy push has made solar PV one of the most heavily regulated product categories. Solar photovoltaic modules and inverters sold in India must clear BIS certification under the Compulsory Registration Scheme, MNRE ALMM (Approved List of Models and Manufacturers) listing, and grid-code compliance for inverters. Public procurement, government tenders, and rooftop subsidy schemes are restricted to ALMM-listed and BIS-certified equipment.
This guide explains the certification stack for solar panels and inverters in 2026 — the applicable Indian Standards, BIS CRS process, ALMM listing pathway, mandatory factory inspections, and timeline expectations for manufacturers and EPC companies.
📜 Indian Standards for Solar PV Modules and Inverters
- IS 14286 — design qualification and type approval for crystalline silicon terrestrial PV modules
- IS 16077 — thin-film terrestrial PV modules (design qualification and type approval)
- IS 61730 (Part 1 and Part 2) — PV module safety qualification
- IS 16221 (Part 1 and Part 2) — utility-interactive and grid-tied inverter safety requirements
- IS 16169 — utility-interconnected PV inverter performance and grid-code compliance
- CEA Grid Code — anti-islanding, voltage and frequency ride-through requirements for grid-tied inverters
📌 BIS CRS is mandatory for solar PV modules and inverters; ALMM listing is additionally required for any project using government subsidies, net metering, or supplying to public-sector buyers.
🔬 Mandatory Tests for Solar PV Modules
Thermal Cycling
200 cycles between -40°C and +85°C to verify long-term mechanical and electrical reliability.
Damp Heat
1000 hours at 85°C and 85% relative humidity to confirm sealing and laminate stability.
Insulation & Wet Leakage
Dielectric withstand, wet leakage, and ground continuity to ensure electrical safety.
Mechanical Load
Static and dynamic mechanical loads, hail impact, and frame integrity testing.
📋 BIS CRS & ALMM Process Roadmap
- Determine Product ScopeMap each module wattage and inverter rating to its IS standard and decide whether ALMM List-I (modules) or List-II (cells) applies.
- Sample Testing at NABL LabSubmit samples to BIS-recognised and MNRE-approved labs such as NISE, ETDC Bengaluru, or other accredited facilities. Full IS 14286 testing typically takes 8–12 weeks.
- BIS CRS Application FilingForeign manufacturers appoint an AIR. File the CRS application on the BIS Manak portal with test reports, factory details, and trademark documents.
- MNRE ALMM ApplicationFile ALMM application in parallel with BIS CRS. ALMM requires factory inspection by a third-party inspecting agency engaged by MNRE.
- Factory InspectionMNRE-empanelled agencies audit production capacity, quality systems, and traceability records before recommending listing.
- R-Number and ALMM Listing GrantBIS issues the R-number; MNRE publishes the model and manufacturer details in the official ALMM list.
- Surveillance & ReverificationALMM listings undergo periodic reverification. BIS CRS is valid for 2 years and renewed via fresh testing as standards evolve.
📄 Documents Required for Solar BIS & ALMM
- IS 14286 / IS 16077 / IS 61730 test reports for modules; IS 16221 / IS 16169 reports for inverters
- BIS Form VI and declaration of conformity
- Factory layout, machinery list, and process flow diagram
- Trademark certificate and brand authorisation
- AIR appointment letter (foreign manufacturers)
- Cell-level traceability records and BIS-listed cell supplier details
- MNRE ALMM application and factory inspection report
- Quality manual and ISO 9001 certificate
⚠️ Common Failures in Solar Certification
Recurring issues include: damp-heat test failures due to inadequate edge sealing on glass-glass modules, anti-islanding response failures in inverter testing, missing PAN India service network for after-sales support (an ALMM check), incomplete cell traceability records, and labels missing both the R-number and ALMM listing reference. Each rework typically costs 4–8 weeks and may require new sample preparation and re-testing.
🏗️ EPC and Project Developer Considerations
Project developers and EPC companies should procure only from manufacturers whose models appear on the current ALMM list and hold a valid BIS R-number. Net-metering applications, CFA (central financial assistance) claims, and government tender bids are rejected if the bill of materials includes any non-listed model. Build a 14–20 week lead time before construction start, and lock in the exact ALMM-listed model number rather than a generic part description in procurement orders to avoid downstream disqualification.
Solar BIS & ALMM Specialist
Global Approbation handles BIS CRS, ALMM listing, and grid compliance for solar PV modules and inverters end-to-end.
Solar Certification Services Talk to Our Team