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 Guides
Collaborating with suppliers for a sustainable future

At all times, our message to suppliers is that they must share with us the common goal of behaving in an ethical, law-abiding manner. Therefore, we have established a specific policy governing supplier relations and contracting, which provides a group-wide framework for the management and control of procurement activities. 

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 ethical. To this end, Siemens Gamesa is committed to taking action if any supplier violates the values and principles set forth in our Code of Conduct.

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.


Code of Conduct for Suppliers (EN)
Code of Conduct for Suppliers (ES)
Code of Conduct for Suppliers (DE)
Code of Conduct for Suppliers (DA)
Code of Conduct for Suppliers (CN)
Code of Conduct for Suppliers (PT)
Code of Conduct for Suppliers (FR)
Code of Conduct for Suppliers (DU) 

Booklet for Code of Conduct for Suppliers and Third Party Intermediaries (EN)

Suppliers of legacy Siemens Wind Power that have already signed the Siemens AG Code of Conduct for Suppliers and Third Party Intermediaries (version 3.0), or have a valid contract with a Corporate Responsibility clause, as well as suppliers of legacy Gamesa that have signed the Gamesa Code of Conduct for Suppliers (2015 version), the General Purchasing Conditions, contract or purchase agreement in that edition that already incorporates the contents of the code will be considered to have effectively adhered to this Code of Conduct.

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

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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