ALLETE values its relationships with suppliers. We strive to ensure that every business decision is guided by our mission, vision and values and our commitment to operate with high ethical standards. We expect our suppliers to share this commitment. This includes promoting sustainability through environmental stewardship, upholding human and workplace rights and ensuring safety culture and reporting.

Prospective Suppliers

Once you have completed registration, you will receive confirmation acknowledging that your information has been added to our prospective supplier list.

ALLETE’s purchasing team will have access to this system to search for prospective suppliers as opportunities become available. Please note, completing the registration does not guarantee business with ALLETE.


To be considered for bidding opportunities with ALLETE’s subsidiaries, your company needs to be registered as a prospective or active supplier in our system. All bidding opportunities are housed in our Oracle iSupplier system, suppliers will be invited to bids directly by members of the purchasing team.

If you’re uncertain if your company is “active” in our system, please contact

Procurement best practices
Suppliers are required to participate in bid and procurement processes in accordance with best practices. Best practices include communicating only with named ALLETE representatives during contract negotiations or bid evaluation and refraining from attempts to influence ALLETE employees or senior managers in order to obtain work.

Supplier Code of Conduct

At ALLETE, Inc. and its subsidiaries (collectively, “ALLETE”), our culture drives excellence through our shared values, which we live every day. These values are as follows:

  • Integrity— We conduct ourselves honestly and ethically— integrity is the foundation of all we do.
  • Safety— We commit to be injury free at work, at home and in our communities.
  • People— We care about others, respect our differences and create opportunities for everyone to thrive.
  • Planet— We are building a cleaner, better world. ALLETE is committed to doing business ethically, with integrity, and in compliance with all applicable laws, regulations, and industry standards.

ALLETE expects its business partners, including all contractors, vendors, and suppliers of goods and services and their employees, agents, and subcontractors (collectively, “Suppliers”), to embody these values and to act ethically and with integrity, in accordance with ALLETE’s Code of Business Conduct. This Supplier Code of Conduct outlines ALLETE’s expectations, and any failure to comply with these minimum requirements may jeopardize a Supplier’s relationship with ALLETE.

Please review the full Supplier Code of Conduct.

System Training Guides (Oracle iSupplier)

Below, you will find documents for our Oracle iSupplier portal regarding: how to get started, helpful tips for maneuvering and other features the system can perform.

The safety and security of employees, contractors and visitors is the utmost importance to ALLETE. Suppliers will be held responsible for the actions of their employees and any sub-contractor employees. All applicable rules, laws, regulations, and ALLETE policies shall be observed.

Contractor training is mandatory for all contractors who perform services for ALLETE and its subsidiaries and who wish to remain on our bidders list. This training needs to be completed on an annual basis for current, active suppliers.


ALLETE, Inc. has established a business relationship with ISNetworld to serve as our primary contractor management administrator to manage contractor safety prequalification requirements. Most contractors performing physical work for ALLETE subsidiaries will be required to become subscribers to ISNetworld. Your ALLETE business partners will work with you to gain a clear understanding of the nature of your work, exposure, and risk to identify if your company may need to be a subscriber of ISN.

Your company’s ISNetworld subscription will provide ALLETE access to the following required information:

  1. Company Profile - Populate your company profile in ISNetworld to include company contact information, office locations, types of work/industry classifications, etc.
  2. EHS Questionnaire - ISNetworld contains the Management System Questionnaire (MSQ) that will be used to gather your company’s EHS data.
  3. Documents - ALLETE will use ISNetworld to track and verify your company’s OSHA Forms and current EMR.
  4. Health, Safety and Environmental Programs - Your company will submit their written safety and environmental programs that meet all Federal and State OSHA requirements. ISN’s Review and Verification Services will review your programs for compliance. Programs that do not meet the standards must be updated and resubmitted for auditing approval.

For additional information on the ISNetworld subscription process, benefits, or any other questions, please visit their website at


ALLETE continues to expand its supplier base to better reflect the diversity of the communities we serve.

To be considered diverse, a business must be at least 51% owned, controlled, operated and managed by one or more individuals in the below classifications:

  • Disabled
  • LGBTQ+
  • Minority
  • Veteran
  • Women

In addition, ALLETE also recognizes the following categories as diverse businesses:


Certification through a third-party organization confirms that a business is diverse. ALLETE encourages businesses to obtain certification through one of the organizations listed below:

Tier 2 Program

If you're a current supplier for an ALLETE subsidiary and are interested in participating in ALLETE’s Tier 2 Program, please contact us at

To submit your spend information, click here.

Questions & Contact

For questions regarding Supplier Diversity at ALLETE, or our Tier 2 program, please see our FAQ.

For additional questions contact

ALLETE provides equal access for all qualified businesses, including both direct Tier I diverse suppliers and Tier II suppliers that report on diverse spend.

System Training Guides (Oracle iSupplier)

Below, you will find documents for our Oracle iSupplier portal regarding: how to get started, helpful tips for maneuvering and other features the system can perform.

Frequently Asked Questions

Please see our Frequently Asked Questions document for answers regarding prospective supplier registration, supplier diversity, Tier 2 reporting and more.