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The sun is our best source of energy. Solar Thermal Systems use the sun's heat. They do not make electricity. They heat water or air directly. This is a great way to save money on power bills. Systems like Solar Water Heaters are very popular. Because these systems are so important for saving energy the government wants to ensure they work well. The Bureau of Indian Standards (BIS) handles this. They enforce the ISI Mark Certification Scheme. If you make any part of these systems, like the flat plate collector or the storage tank, you must get the ISI Mark. This mark tells the customer that your product meets the necessary performance and safety rules.
Unlike some other products, Solar Thermal Systems are not covered by just one standard. They use a group of different standards. Each part of the system has its own rulebook. You must comply with all of them for a full system certification.
Even parts sold separately must be certified. These components have standards too:
BIS Scheme X Certificate Registration
For any BIS certification, the in-house testing laboratory is the most critical element. You cannot rely on outside labs forever. You must show the BIS you can test your product all the time. This ensures consistent quality.
Your lab for Solar Thermal Systems must be able to perform both performance tests and durability tests. The key equipment and facilities required are:
The BIS process is systematic. You must follow the steps correctly.
BIS ISI Certificate for Room Heater: IS 302 PART 2 SEC 30
Your application needs to be backed up by accurate paperwork. Prepare these documents carefully.
The ISI Mark license is not given forever. It is valid for one to two years initially. You must renew it regularly. Renewal requires you to show that you have maintained the quality consistently throughout the year.
The BIS conducts Surveillance. They make surprise visits to your factory. They check your records and might take samples from your finished goods stock or from the open market. They check these samples against the relevant IS standards again. This surveillance system ensures that quality does not drop after manufacturers get the initial license.
Securing the BIS ISI Mark for your Solar Thermal Systems is a mandatory step. It is your only legal way to access the growing green energy market. It proves your commitment to making high-quality, reliable, and energy-efficient products.
The detailed requirements for the in-house laboratory the specific performance testing protocols and managing the BIS documentation for multiple standards can be highly complex and technical. Expert regulatory assistance is invaluable here it saves you time and resources
Contact Agile Regulatory today. We specialize in simplifying the complex BIS certification process for renewable energy products. We help you secure your ISI Mark fast, legally, and without any hassle.
Nishi Chawla
08 May, 2026
Nishi Chawla
08 May, 2026
Nishi Chawla
07 May, 2026
Nishi Chawla
07 May, 2026
Nishi Chawla
07 May, 2026
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