Sustainability for suppliers of Siemens Gamesa


A sustainable partnership

Built on trust and excellence

Siemens Gamesa has a strong history of supplier excellence, built up over the years through sustainable relationships with our supplier and contractor base. We value our partners and strive to optimize the interaction through process and tool excellence. The next move towards a more digital future is the implementation of SAP Ariba Strategic Sourcing. One digital platform to interact in a simple, compliant and efficient way. Training material for the registration and first steps are below.


Contact Siemens Gamesa

Please reach out to our expert team for more information about Siemens Gamesa’s commitment towards suppliers.

Ariba Strategic Sourcing
Ariba Strategic Sourcing
As part of Siemens Gamesa’s vision to be a global leader in digital solutions, we are implementing the Ariba Strategic Sourcing solution. The platform will allow for a more digital, smart and transparent communication and cooperation with our suppliers. Click here to read more about the platform and to find all the available user guides.
Collaborating with suppliers for a sustainable future

Sustainability in terms of Environmental, Social and Governance aspects is of the highest importance for Siemens Gamesa. Sustainable conduct forms the basis of our business decisions and collaboration with our stakeholders.

At all times, our suppliers need to share our common goal of respecting and promoting our environment, ethical standards and compliance with legislation.
Therefore, we have established the Supplier Relationship Policy, which provides a group-wide framework for the management and control of procurement activities in order to foster a sustainable future.

Siemens Gamesa ensures the impartiality and objectivity of our supplier selection processes and establishes the channels and mechanisms needed to ensure that our supplier conduct is ethically responsible.
We further specify our relationship requirements with suppliers in the Code of Conduct for Supplier and Third Party Intermediaries that can be found in a separate chapter further down on this website.

At Siemens Gamesa we are committed to improve the protection of human rights and the environment through limiting the use of hazardous substances in chemicals, materials and articles and substituting to less hazardous substances where it is technically possible. In countries around the world, substance regulations have been implemented to restrict and prohibit the use of harmful substances. Correspondingly, you can find here The Siemens Gamesa – Substance Regulation List.

In addition, we commit ourselves to a responsible sourcing of minerals, especially from conflict affected or high-risk areas according to the OECD Due Diligence Guidance, Edition 3, Annex II.
Accordingly, we have detailed out our commitment in the Responsible Minerals Sourcing at Siemens Gamesa.
Together with our parent company Siemens Energy, we are aiming to avoid the use of these minerals within our supply chain.
Together, we are conducting a uniform and enterprise-wide process to determine the use, source and origin of the relevant minerals in our supply chain (Supply Chain Due Diligence), including the Responsible Minerals Assurance Process (RMAP) as part of the Responsible Minerals Initiative (RMI). Additional process details can be seen on the Siemens Energy website.
Consequentially, we work closely with our suppliers to support us in carrying out this process and, where necessary, we work with suppliers in order to mitigate risks and perform additional due diligence so that we can ensure a responsible sourcing.

Supply chain management principles

The principles followed by our supply chain support several key activities that have consistently created positive value with our suppliers and stakeholders:

  • Development of the local supply base while contributing to local wealth creation.
  • Working with suppliers to achieve world-class component design in order to reduce costs.
  • Creating opportunities for qualified suppliers to export to other regions based on their competitiveness.

All these activities are important contributions to internal activities as defined in Commodity Strategies, New Product Introduction and Engineering Change Management.

The Supplier Lifecycle Management (SLM) community within Siemens Gamesa is established and engaged, and its work encompasses sustainability topics. 

Supplier onboarding process

The available processes and tools at Siemens Gamesa provide strategic buyers with levers, risk indicators and transparency to support their best sourcing decision.

Sustainability self-assessments are applied to strategic suppliers or suppliers located in high risk countries. The answers provided are screened, and suppliers who fail to meet the requirements are either immediately blocked from further business with Siemens Gamesa, or may be conditionally approved if the issues are not critical.

An External Sustainability Audit is executed by different third party providers and is the most powerful detection module. Monitoring may include re-audits or follow-up audits by our external partners.

Supplier Quality Manual

The purpose of the Supplier Quality Manual is to specify and explain the procedures and requirements that affect the cooperation between Siemens Gamesa Renewable Energy and its suppliers of materials and critical services. The Quality Manual covers the below areas:

  • Siemens Gamesa Quality Vision
  • Health, Safety and Environmental guidelines
  • Supplier Qualification
  • Product and Service Qualification
  • Quality Requirements in Serial Production

The goal of the Supplier Quality Manual is to ensure excellent quality for our customers throughout the entire supply chain.

Supplier Quality Manual

Code of Conduct for Suppliers and Third Party Intermediaries

The Code of Conduct for Suppliers and Third Party Intermediaries applies to all suppliers and third party intermediaries of Siemens Gamesa and has four main areas:

  1. Human Rights
  2. Fair Operating Practices
  3. Labor Practices
  4. Environmental Protection

It establishes standards to ensure that working conditions in our supply chain are safe, that workers are treated with respect and dignity, and that business operations with suppliers are ethical, social and environmentally responsible.

Siemens Gamesa promotes the Code of Conduct to all suppliers as they play a critical role in our sustainability-oriented value chain. We expect all suppliers to demonstrate their commitment towards these standards and principles and request compliance and adherence to it. The Code of Conduct is incorporated into our General Purchasing Conditions, in framework contracts and purchase agreements with each supplier, and also in procurement tools.

Suppliers may also declare their adherence to the Siemens Gamesa Code of Conduct by signing the Declaration of Acceptance.

In addition, the following booklet outlines in detail our expectations towards our suppliers in each requirement presented in the Code of Conduct:
Booklet for Code of Conduct for Suppliers and Third Party Intermediaries

The Siemens Gamesa Code of Conduct and Declaration of Acceptance is available in English and following translations:


Purchase conditions

Below you will find the Siemens Gamesa General Purchasing Conditions. Please choose the document that corresponds to the country where the Siemens Gamesa legal entity which requests the supply is registered. For further details regarding our General Purchasing Conditions, we thank you for contacting your usual Siemens Gamesa buyer.


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