Choose your region and language



Hitachi Power Grids Material Compliance

Material Compliance

We have a duty and social responsibility to ensure that the materials we use do not contribute to environmental degradation or lead to conflict and exploitation in the countries that produce them.

We are determined to comply with regulatory and customer requirements regarding the prohibition and restriction of substances, including hazardous substances and responsible sourcing of conflict minerals and cobalt. To ensure the health, safety and protection of people who come into contact with our products and business, and setting/requiring high social, environmental and human rights standards among our suppliers.

Our organization continues to support responsible minerals sourcing and industry initiatives by identifying the products which are impacted and targeting our efforts of not buying products and materials containing Conflict Minerals/Cobalt directly from conflict mines. We have systems in place to monitor the source of certain minerals more closely, and phase out the use of hazardous substances in Hitachi Energy products and processes.

We ask our suppliers to actively support ongoing efforts to manage and demonstrate product compliance with regulations such as REACH, SCIP, RoHS and Conflict Minerals. We are contributing to conflict-free trade by encouraging our suppliers not to discriminate against legitimate sources of Conflict Minerals and Cobalt, but exercise due diligence to investigate the source of this mineral.

Conflict Minerals Policy

Cobalt Policy

Substances of Concern in Products (SCIP)

Watch this video on the importance of conflict minerals and what we expect from our suppliers. 

Supplier Resources

SEC Conflict Minerals Ruling

OECD Due Diligence Guidance

Supplier Training on Conflict Minerals (pdf)

RMI website/CMRT/Training

Strict legal frameworks have been put in place around the world to regulate the use of tin, tantalum, tungsten and gold, a group of elements that are collectively known as “3TG” or “conflict minerals”. The European Commission has singled out T3 minerals as the ones most likely to be associated with armed conflict in high-risk countries such as the Democratic Republic of Congo. They are present in weld wire, capacitors, electronic contacts and the coatings of electrical connections, all of which are used to make many of our products.

The eastern portion of the Democratic Republic of the Congo (DRC) has long been the site of one of the world’s worst humanitarian crises, and the conflict there continues. Revenue from the illegal mining and trading of the DRC's natural resources have been exploited to fund armed conflict, and serious human rights abuses are linked to that conflict and to mines for certain ores, now known as conflict minerals.

Under the Dodd-Frank Act in the United States, the following minerals and their derivatives are defined as conflict minerals:

  1. Columbite-tantalite (Coltan) - refined into tantalum (Ta)
  2. Cassiterite - refined into tin (Sn)
  3. Wolframite - refined into tungsten (W)
  4. Gold (Au)

These are also referenced as 3TG (Tin, Tantalum, Tungsten and Gold).

Conflict Minerals Report 2021

In August 2012, the United States Securities and Exchange Commission issued its final rules regarding “Conflict Minerals” as defined in and required by section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act.

The conflict minerals section of the Dodd-Frank Act focuses on supplies of tantalum, tungsten, tin and gold sourced in the Democratic Republic of the Congo and neighboring countries. The purpose of the Act is to reduce violence in the region funded through exploitation of mining and trade activities. For more information on the Dodd-Frank Act Final Rule and the Summary follow the links below:


The European Union Regulation on Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) entered into force on  June 1, 2007. The purpose of this regulation is to ensure high level protection of human health and the environment. This regulation enhances the industry’s responsibility to manage the risks from chemicals and to provide safety information on the substances present in various products. To ensure safe handling, manufacturers and importers are required to gather and disclose information regarding the properties of chemical substances.


The purpose of the European Union Directive on the Restriction of the use of certain Hazardous Substances in electrical and electronic equipment (RoHS) is to restrict the use of hazardous substances in electrical and electronic equipment. 

The Hitachi Energy List of Prohibited and Restricted Substances has been compiled in order to help our engineers and suppliers comply with regulatory requirements, ensure a high level of protection for human health and the environment, and manage risks encountered by chemicals present in various products.

The Guide for Suppliers to the Hitachi Energy List of Prohibited and Restricted Substances is provided with the purpose of supporting the interpretation of the Hitachi Energy List and providing guidance on supplier’s obligations.

List of Prohibited and Restricted Substances