**Executive Summary**
The CSIR-National Physical Laboratory (NPL) inaugurated two apex-level calibration facilities on January 8, 2026, to enhance indigenous measurement and certification. The facilities include the National Primary Standard Facility for Solar Cell Calibration (NPF-SCC) and the National Environmental Standard Laboratory (NESL). These facilities aim to improve product quality, meet regulatory guidelines, and overcome trade barriers.
**Key Points / Main Content**
* **National Primary Standard Facility for Solar Cell Calibration (NPF-SCC):**
* Provides a world-class system for checking the performance of reference solar cells and panels.
* Built around a laser-based Differential Spectral Responsivity Primary Reference Measurement System developed with PTB Germany.
* Enables measurement of the short-circuit current of reference solar cells with low uncertainty (±0.35 percent at k equals 2).
* Establishes a complete domestic traceability chain for photovoltaic metrology.
* Reduces dependence on foreign calibration and shortens turnaround time for Indian solar companies.
* Allows calibration certificates to be issued based on Indian climate, humidity, and dust profiles.
* **National Environmental Standard Laboratory (NESL):**
* Tests and recalibrates instruments used for air pollution monitoring systems and environmental sensors under Indian environmental conditions.
* Allows manufacturers, industries, and municipal agencies to validate performance within the country.
* Ensures credible data for the National Clean Air Programme, industrial emission audits, and smart-city monitoring networks.
* Provides reference gases, protocols, and uncertainty evaluation services.
* **Overall Impact:**
* NPF-SCC and NESL are expected to help MSMEs, start-ups, and indigenous manufacturers demonstrate product quality at lower cost.
* Aids in meeting tightening regulatory guidelines on quality and transparency.
* Helps overcome trade and certification barriers.
* Facilities realised through financial grants from the Ministry of New and Renewable Energy, and the Ministry of Environment, Forest and Climate Change.
**Impact Analysis**
**MSMEs, Start-ups, and Indigenous Manufacturers**
* **Impact:** Enhanced ability to demonstrate product quality, meet regulatory standards, and reduce trade barriers.
* **Action Required:** Utilize the facilities for product calibration and testing to comply with standards and improve competitiveness.
**Solar Companies**
* **Impact:** Reduced dependence on foreign calibration, shortened turnaround time, and calibration certificates based on Indian conditions.
* **Action Required:** Leverage the NPF-SCC for domestic solar cell calibration to improve efficiency and reduce costs.
**Manufacturers, Industries, and Municipal Agencies**
* **Impact:** Ability to validate the performance of air pollution monitoring systems and environmental sensors within the country, ensuring credible data for environmental programs.
* **Action Required:** Utilize the NESL for recalibration of air pollution monitoring systems to meet standards.
**National Clean Air Programme, Industrial Emission Audits, and Smart-City Monitoring Networks**
* **Impact:** Increased credibility and reliability of data used for monitoring and compliance.
* **Action Required:** Adapt and integrate the high-quality data generated by the newly calibrated instruments into existing monitoring and audit frameworks.
Key Entities Referenced
CSIR-National Physical Laboratory (CSIR-NPL): Apex institution for metrology and custodian of India's national standards. Location of the launched calibration establishments.
National Primary Standard Facility for Solar Cell Calibration (NPF-SCC): Facility created to check the performance of reference solar cells and panels.
National Environmental Standard Laboratory (NESL): Laboratory established to test and recalibrate instruments used for air pollution monitoring systems and environmental sensors under Indian environmental conditions.
Ministry of New and Renewable Energy: One of the Ministries providing financial grants for the facilities.
Ministry of Environment, Forest and Climate Change: One of the Ministries providing financial grants for the facilities.
Ministry of Science & Technology
CSIR-NPL Strengthens National Quality
Infrastructure with Inauguration of Two Apex
Calibration Facilities
प्रव तथ: 08 JAN 2026 4:32PM by PIB Delhi
India witnessed the launch of two apex-level calibration establishments at CSIR-National Physical
Laboratory, dedicated to empowering indigenous measurement and certification within the country. The
CSIR-NPL, the apex institution for metrology and custodian of India’s national standards, completed eight
decades of diligent service to the nation. The Laboratory had been discharging its responsibilities as the
National Metrology Institute of India, establishing reference measurements that supported research
laboratories, manufacturing units, municipal agencies, and strategic sectors. Its work in developing
accurate measurements had a direct bearing on industrial quality, fair trade, reliable environmental data,
and consumer and public safety.
The National Primary Standard Facility for Solar Cell Calibration (NPF-SCC) was created to provide
India with a world-class system to check the performance of reference solar cells and panels. The facility
was built around a laser-based Differential Spectral Responsivity Primary Reference Measurement System
developed in collaboration with PTB Germany. It enabled the measurement of the short-circuit current of
reference solar cells with ±0.35 percent uncertainty at k equals 2, one of the lowest uncertainties among
the four World Photovoltaic Scale laboratories. This milestone established a complete domestic
traceability chain for photovoltaic metrology, reduced dependence on foreign calibration, shortened
turnaround time for Indian solar companies, and allowed calibration certificates to be issued on the basis
of Indian climatic, humidity, and dust profiles. The facility was expected to support India’s rapidly
expanding solar manufacturing ecosystem, rooftop solar missions, and wider acceptance of Indian PV
products in exports and PLI-linked programmes.
The National Environmental Standard Laboratory (NESL) was established to test and recalibrate
instruments used for air pollution monitoring systems and environmental sensors under Indian
environmental conditions. Earlier, most such equipment was imported with foreign certifications issued
under Europe or US weather profiles. The difference in temperature, humidity, pollution mix, and high
dust load often affected the long-term reliability and transparency of data generated in India. NESL
allowed manufacturers, industries, and municipal agencies to validate performance within the country,
ensured credible data for the National Clean Air Programme, industrial emission audits, and smart-city
monitoring networks, and provided reference gases, protocols, and uncertainty evaluation services that
improved public trust and evidence-based governance.
Together, NPF-SCC and NESL were expected to help MSMEs, start-ups, and indigenous manufacturers to
demonstrate product quality at lower cost, meet tightening regulatory guidelines on quality and
transparency, and overcome trade and certification barriers in a cost-effective manner. Both facilities were
realised through financial grants from the Ministry of New and Renewable Energy, Government of India,
and the Ministry of Environment, Forest and Climate Change, respectively. These facilities show the
strength of inter-ministerial collaborations in realizing world class facilities in India. CSIR-NPL alsoreiterated that the Laboratory had been working on quantum standards development, advanced materials
and biomedical metrology, and maintenance of Indian Standard Time. These initiatives reflected the
Laboratory’s multidimensional contribution to India’s economy and daily life, highlighted the importance
of reliable measurements to society, and reaffirmed CSIR-NPL’s commitment to provide precision for
India’s progress and prosperity.
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