The Government of India has issued a new Quality Control Order (QCO), 2024, making Bureau of Indian Standards (BIS) certification mandatory for all Solar Water Heaters (SWHs)—both domestically manufactured and imported—starting April 12, 2025.
As per the directive, non-compliance will attract penalties under Section 29(3) of the BIS Act, 2016. The move aims to curb the influx of sub-standard and cheaper quality products into the Indian market, while ensuring that consumers get access to high-quality and reliable solar water heating systems.
The QCO covers key Indian Standards including:
- IS 12933 for Solar Flat Plate Collectors
- IS 16542 and IS 16544 for Evacuated Tube Solar Water Heating Systems
As per the guidelines, the highest system capacity (as declared by manufacturers) within a particular category, and for each variant of inner tank material (Stainless Steel, Mild Steel, or Galvanised Iron), must undergo testing and certification.
Ensuring Quality in a Changing Market
Solar water heating was once a flagship renewable energy initiative of the Indian government, and India still ranks among the top 10 global markets for solar thermal technology. According to the Solar Thermal Federation of India, the country records an average annual market of 1.5 million m² of installed collector area.
However, in recent years, the sector has seen a slowdown as rooftop solar photovoltaic (PV) systems—bolstered by attractive subsidies—gain popularity. The QCO aims to revive confidence in solar thermal technology by ensuring only quality-assured products reach consumers.
Industry Response
Industry experts have welcomed the move, stating that it will help maintain product standards, boost consumer trust, and promote fair competition in the market.
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