India’s June 1 ALCM Deadline Sets Up Crucial Crossroads for Domestic Solar Manufacturing

India’s June 1 ALCM Deadline Sets Up Crucial Crossroads for Domestic Solar Manufacturing

February 27, 2026

New Delhi, India – India’s solar industry is approaching a pivotal moment as the Approved List of Cell Manufacturers (ALCM) requirement — part of the broader Approved List of Models and Manufacturers (ALMM) framework — is set to become mandatory from June 1, 2026. Under this policy, solar photovoltaic (PV) modules deployed in most categories of projects must use solar cells sourced only from manufacturers approved by the government, marking a key step in India’s push for a vertically integrated solar supply chain.

The policy shift reflects New Delhi’s long-standing goal to strengthen domestic solar manufacturing and reduce reliance on imported cells, particularly from China. India has already mandated that PV modules for government and other eligible projects come from approved domestic makers, and extending this requirement to include solar cells represents a much more ambitious phase of the Make in India strategy.

However, the industry is divided on the preparedness of the domestic ecosystem to meet this requirement by the deadline. When the first ALCM list was published in July 2025, only a handful of manufacturers — six companies with about 13 GW of cell capacity — were approved, compared with far greater module production capacity already on ALMM List-I. This gap underscores a persistent shortfall in domestic cell output relative to demand, raising concerns among developers and smaller manufacturers about potential supply shortages and cost increases if the rule takes effect as scheduled.

Large solar firms that have invested early in cell manufacturing stand to benefit by capturing captive demand and strengthening their pricing power. In contrast, smaller makers dependent on imported cells may be forced to comply at higher cost — which could lead to project delays, higher tariffs or exit from certain market segments. Some stakeholders have suggested possible deadline extensions ranging from six months up to two years, while acknowledging that prolonged delays could undermine policy credibility.

The government also faces choices on exemptions that could soften the transition, such as specific project categories or interim leeway for developers. Authorities have historically amended ALMM rules multiple times to balance industry readiness with policy goals, and similar flexibility may be considered again.

The outcome of this debate will have major implications for India’s solar manufacturing trajectory and energy transition. Ensuring timely clarity on the implementation timeline is critical for developers, manufacturers and investors as the sector navigates this transformative phase.