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DLC Certification

As an accredited testing laboratory, we’ve helped thousands of manufacturers complete testing for their products and achieve DLC certification.

1. DLC certification

The DesignLights Consortium (DLC) was established in 2009 as a collaboration between utility companies and regional energy efficiency organizations in the United States and Canada. The DLC aims to promote energy efficiency in commercial lighting through the development of technical specifications and quality standards for lighting products. By certifying products that meet these standards, the DLC helps businesses and consumers identify energy-efficient lighting solutions that can reduce energy consumption and operating costs. The DLC certification has become a widely recognized mark of quality and energy efficiency in the lighting industry, driving the adoption of sustainable lighting technologies.

2. DLC certification current version, testing items, documentation required and certification processes

The DesignLights Consortium (DLC) 5.1 is an updated version of the DLC technical requirements and quality standards for commercial lighting products, specifically focusing on LED fixtures and bulbs. DLC 5.1 sets more stringent criteria for energy efficiency, performance, and quality compared to previous versions, encouraging the adoption of even more advanced and efficient lighting technologies.

  • Color temperature test for high color temperature;
  • LM79 test for low color temperature;
  • ISTMT test for low color temperature;
  • Temperature rise test of driver (required by Premium version);
  • TM21 life analysis;

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Required documentation varies depending on the products. For detailed required documentation on specific product, please fill out our short form, our expert will be glad to assist you further. Below are some of typical required documentation for DLC certification:

  • LM79 test report + ISTMT temperature rise test report;
  • Safety test reports (issued by ETL, UL or TUV, or reports recognized by United States federal government);
  • Lead time will be reduced with LM80 test report. Otherwise, it will be tested for 6,000 hours;
  • Product specification;
  • 5-year warranty statement;
  • If you apply for premium version, the specification and life span evaluation report of driver shall be provided.

Below are the general application steps for achieving DLC certificate. Have questions or not sure where to start? Please fill out our short form, our expert will be glad to assist further.

  • Provide recognized safety test report;
  • Send samples for testing;
  • Issue test report (generally takes 1 week);
  • Register on Lightingfacts website;
  • Register on DLC website;
  • Settle payment;
  • DLC audit (generally takes 2-3 weeks);
  • Listed on DLC website.
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3. Price and lead time

You will never pay for services that you don’t need! GTG Group provides a customized quote which are tailored to each client's needs and budget. Furthermore, you will receive the DLC certification within 5-7 weeks according to our past successful records, much shorter than the average industry time.

However, the cost and the lead time of testing and certification varies depending on the product complexity and the testing requirements. GTG Group provides free consultation to assess your needs and provide advice on how to get started with compliance. Contact us today by filling out our short form!

4. Differences between DLC certification and Energy Star® certification

Both DLC certification and Energy Star® Certification play a crucial role in promoting energy efficiency and sustainability, offering consumers and businesses options to choose environmentally friendly lighting solutions tailored to their needs, but they have some key differences:

  • Scope: Energy Star® Certification covers a wide range of products, including appliances, electronics, and lighting, while DLC certification specifically focuses on commercial lighting products such as LED fixtures and bulbs.
  • Certification Criteria: Energy Star® Certification sets energy efficiency guidelines for products based on national standards, while DLC certification establishes technical requirements tailored to commercial lighting applications.
  • Incentives: Products with Energy Star® Certification may qualify for rebates and incentives from utility companies and government programs, while DLC-certified products are often eligible for utility rebates specifically targeting energy-efficient lighting upgrades.
  • Recognition: The Energy Star® label is more widely recognized by consumers across various product categories, while DLC certification is more industry-specific and targeted towards commercial lighting professionals.

5. Why choose us?

Founded in 2012, GTG Group is an independent ISO/IEC 17025 accredited product testing and certification services provider in China, providing comprehensive testing and regulatory certifications obtaining services forfor a wide range of products. Our goal is to certify your products and ensure their compliance with regulatory standards in order to help you access worldwide markets.

By working with GTG Group, you will enjoy the convenience of completing all of your tests (energy efficiency, safety, EMC, RF, wireless, environmental, durability, performance, chemical and other tests) and receive certification for your product from a single accredited lab. You will also eliminate the headaches of using multiple labs, delays in logistics, and shipping costs. Fill out our short form and get a quick quote today!

One of the most significant advantages of working with GTG Group is that we perform real test and are responsible for the end user. This is essential because it avoid risks and provides peace of mind to businesses and individuals who use the products. We have worked with some of the world’s leading businesses, and our services are highly regarded by our clients. When you choose the GTG Group for testing and certification, you can be confident that you are working with a trusted and reliable partner.

Our testing and test reports are globally recognized and accepted by regulatory agencies, ensuring that your products meet the necessary standards and regulations. GTG Group’s subsidiaries are accredited by local and international certification bodies that includes IECEE, UL, A2LA, NVLAP, ITS (Intertek), KTC, TÜV, Eurofins, CNAS, CMA, CQC. Our accreditation is a testament to our commitment to providing high-quality testing services that meet industry standards. Check all accreditation documents in this page.

GTG Group accredited laboratory have more than 10 years of experience in safety testing for the North American market and have helped thousands of businesses achieve Energy Star® certification. Experts we hired are all with deep industry expertise and extensive technical knowledge that can help you avoid common mistakes.

GTG Group facilities are with enough space to perform every type of test separately and have room for all your equipment as well as plenty of workspace around it. GTG Group covers a testing area of 30,000 square meters and have more energy efficiency testing labs, safety testing labs, EMC testing labs, RF testing labs, wireless testing labs, performance testing labs, durability testing labs and environmental testing labs than our peers. 

Furthermore, our standardized and normalized testing process allows us to deliver accurate and reliable testing results within a short timeframe. That’s why our turnaround time is among the fastest in the industry, ensuring that our clients get their products to the market without any delay.

GTG Group invest heavily in modern testing equipment and have a rigorous quality control process in place to ensure that the testing methods are accurate and reliable. Additionally, the laboratory regularly upgrades its equipment to ensure that it remains at the cutting edge of technology.

We understand that every product is different, and the cost is a significant factor when it comes to product development. GTG Group strive to provide affordable testing solutions without compromising on quality. Our team of experts will work closely with you to understand your product’s specific needs and design testing solutions that meet your requirements and ensures compliance with regulatory standards. This means that you can get the testing you need, without paying for services that you don’t, ensuring that our clients always get the best value for their money.

We can also provide free pre-compliance tesing service to help detect and resolve potential design flaws early in the process to reduce design costs and accelerate market launch. We promise no risk or any obligation!

Ready to get a free quote?

We offer competitive pricing for our testing and certification services. And our team is always available for any general inquiries, or technical discussions regarding compliance testing/certification. Speak to a GTG Group expert by filling out our short form.
Need help or have a question?

Have questions about product testing and certification in reference to standards interpretations, applicability of standards, or country-specific requirements?

Not sure what standard or standards apply to your product? Let's talk! Our experts are 24*7 on call.


View our comprehensive testing scope, standards we cover, and see our full accreditation here.

Ready to get a free quote?

We offer ompetitive pricing for our testing and certification services. And our team is always available for any general inquiries, or technical discussions regarding compliance testing/certification.

Contact us on 0086-18188898539 to talk to our team, or request a free quote by filling out our short form below.
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With 12 years of experience, GTG Group have helped thousands of organizations access markets, comply, innovate, and differentiate.

© 2012-2024 GTG Group. All rights reserved.

© 2012-2024 GTG Group. All rights reserved.