India’s solar push is one of the largest clean-energy programmes in the world, and the compliance framework behind it has become correspondingly strict. For anyone manufacturing, importing, or supplying solar photovoltaic (PV) modules, two acronyms dominate the conversation: BIS and ALMM. They are related but distinct, and understanding how they fit together is the difference between a module that can be used in subsidised projects and one that is effectively locked out of the market. In simple terms, BIS certification proves a module meets India’s technical safety and quality standards, while ALMM — the Approved List of Models and Manufacturers, maintained by the Ministry of New and Renewable Energy (MNRE) — is the gateway list that determines which modules and manufacturers are eligible for government and government-assisted projects. BIS is the foundation; ALMM is the door it unlocks. This guide explains both, including the significant List-II change that took effect in June 2026. 1. The Two Layers: BIS and ALMM It helps to think of solar compliance in India as two stacked layers: The relationship is sequential: a manufacturer first secures BIS certification for its module, then applies to have that model and manufacturing line enrolled on the ALMM. Without the BIS foundation, ALMM is simply not possible. 2. The BIS Standards for Solar Modules Solar PV modules are certified against a set of Indian Standards harmonised with international IEC norms. The core standards include: Standard Scope IS 14286 Design qualification and type approval of terrestrial PV modules (aligned with IEC 61215) IS / IEC 61730 PV module safety qualification — construction and testing requirements IS 16077 / IS 16221 Safety and performance requirements for terrestrial PV modules These standards test a module’s ability to withstand real-world conditions — thermal cycling, humidity, mechanical load, insulation, and more. Certification is handled through the BIS conformity process applicable to PV modules, and it forms the technical evidence MNRE relies on for ALMM enrolment. 3. Understanding ALMM List-I and List-II ALMM is structured in two lists that correspond to different points in the solar supply chain: This two-list structure reflects a deliberate policy: it is not enough for the finished panel to be approved; increasingly, the cells inside it must also come from approved sources. 4. The June 2026 Change: Cell Sourcing Under List-II Key development: ALMM List-II for domestically produced solar cells came into force on 1 June 2026. From that date, modules must use cells sourced from List-II-approved manufacturers in order to qualify for government subsidies and project approvals. In practice this means a module maker can no longer rely solely on its own List-I module listing — it must also ensure the cells it uses come from an approved List-II source. For importers and integrators, this is a structural shift. A panel that was acceptable purely on the strength of List-I module approval may now fall short if its cells are not from a List-II source. Supply-chain documentation — proving where the cells originate — has become a compliance requirement in its own right. Manufacturers planning to supply the government-driven segment of the market must map their cell sourcing against List-II well ahead of bidding. 5. Why ALMM Matters Commercially ALMM is not a safety mandate that applies to every single solar sale; rather, it is a powerful market-access gate. The vast majority of India’s solar deployment is connected in some way to government schemes, subsidies, open access, or net metering — and all of those channels require ALMM-listed modules. A module that is BIS-certified but not ALMM-listed can still exist in the market, but it is shut out of the largest and most bankable segment of demand. In other words, for a serious solar business in India, ALMM listing is effectively commercial oxygen. That is why manufacturers treat the BIS-then-ALMM pathway as a strategic priority rather than a paperwork afterthought. 6. The Pathway: From BIS to ALMM 7. Common Pitfalls 8. Domestic Content Requirements and the Push for Local Manufacturing ALMM does not exist in isolation. It is one instrument in a broader policy that aims to build a self-reliant Indian solar manufacturing base — from modules down to cells and, eventually, wafers and ingots. A related concept that solar suppliers encounter is the Domestic Content Requirement (DCR), which mandates that modules used in certain government schemes be made in India using domestically manufactured components. The List-II cell-sourcing rule that took effect in June 2026 should be read against this backdrop: the direction of travel is steadily toward deeper localisation of the supply chain. For an importer or an assembler, this matters strategically. A business model built purely on importing finished modules — or on assembling modules from imported cells — faces a narrowing path into the subsidised and government-linked segments of the market. Conversely, manufacturers who invest in domestic cell sourcing and List-II-compliant supply chains position themselves to capture the largest and most policy-protected share of demand. Understanding where your products sit on this spectrum is now a core part of solar business planning, not just a compliance detail. 9. Practical Steps for Importers and Developers Whether you are a module supplier or a developer specifying panels for a project, a disciplined approach keeps you on the right side of both BIS and ALMM: 10. Quality, Bankability, and Why Standards Matter Behind the regulatory machinery, the purpose of BIS certification and ALMM is to ensure that the solar modules deployed across India actually perform and last. Solar projects are long-term assets, often financed on the expectation of 20 or 25 years of generation. A module that degrades prematurely or fails in the field does not just disappoint a single buyer — it undermines the financial model of the entire project and the confidence of the lenders and investors behind it. This is where standards and bankability intersect. Financiers and large developers increasingly treat BIS certification and ALMM listing as baseline criteria for a module to be considered bankable. A panel that cannot demonstrate compliance is difficult to