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Outage Notice: BID System

Due to scheduled maintenance, Hydro One's BID System will be unavailable for new registrations and password/user ID resets this weekend during the following times:

  • Saturday, December 9 from 9:00 p.m. until 3:00 a.m. on Sunday, December 10.

Registered users may still log in to the system during the outage period.

We apologize for any inconvenience this outage may cause.

Please note: SAP ariba is only compatible with google chrome or ie11 (or later versions)
Please note: sap ariba is only compatible with google chrome or ie11 (or later versions)

Hydro One has launched a new tool called Ariba, which replaces our former sourcing tool and bidding engine known as the Bidder Information Database (BID) System. All existing contracts will be migrated to Ariba’s contract management repository.

Hydro One strives to be a supply chain leader through programs and technologies that protect people, manage impacts on the environment, and promote energy efficiency. We pursue alignment with suppliers that share our vision of Corporate Social Responsibility and safety while providing the right material or service at the right place, at the right time, and for the best value.

We recognize that a strong, diverse supplier community is essential to economic vitality and proactively seek opportunities to create strategic partnerships with our suppliers.

SAP Ariba logo

Key Benefits

Ariba will provide a single, cloud-based source-to-order solution, improving speed of processing, reducing errors and exceptions, and allow Hydro One to collaborate more easily with our suppliers.

For our current and future suppliers, there is no cost to use Ariba and it will connect us to the largest business network in the world!


Key Process Changes

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Join The Ariba Network

All current and new suppliers will be required to join the Ariba Network to participate in Hydro One sourcing events.

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Review RFPs, Submit Proposals

Registered users will be able to view, pick up and submit request for proposals in Ariba.

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Review AND Sign Contracts

Registered users will be able to “Redline” and eSign in Ariba (eSignature capabilities are provided through DocuSign).

What you need to do

Suppliers will be required to register on the Ariba Network in order to bid on future contracts. Some of our regular suppliers will have already received an invitation to register.

If you have not yet been invited to register on Ariba, please send an email to requesting an invitation. Please refer to the Supplier Registration User Guide for step-by-step instructions on how to register. 

Additional information on how to participate in Hydro One sourcing events using the Ariba Network and how to use DocuSign for eSignatures is also available in the User Guides below:


Coming Soon: Ariba

Hydro One is launching a new online sourcing tool called Ariba in 2018. Learn more about the new system here.

Learn more

Procurement Opportunities

The supplier registration process is the foundation of our relationship with new and existing suppliers. Registering and maintaining a supplier profile lets us stay current on the products, services and overall ability of your organization.

Registering as a supplier enables your company to be considered, but does not constitute an obligation on our part to purchase products or services from your company.


At the end of the review period, winning bids will be posted to our Awards page. All queries regarding the RFx are to be made through the contact designated in each RFx notice. Failure to comply with the RFx requirements may cause your company to be ineligible for an award.

At Hydro One, we are committed to ensuring opportunities exist for Indigenous community members to play a role in our procurement process and activities. If you would like your company to be identified as an Indigenous business and would like to be included in our Indigenous Business Directory, please register with SAP Ariba where you can self-identify as an Indigenous business and consent to be added to Hydro One's Indigenous Business Directory.

Having Technical Difficulties?

If you have any technical difficulties registering on the Ariba Network, please contact the Hydro One support team at or visit the SAP Help Centre.

Aboriginal Procurement

Indigenous Procurement

Learn More

Learn More about Health and Safety

Health and Safety

Learn More


Invoicing and payments

Invoicing and Payments 

Learn More



Learn More