Sign In

We want you to be able to access myAccount. However, the new, easy-to-use features in myAccount require you to enable cookies. Here are some shortcuts to help you with this:

Help for Chrome users. Help for Firefox users. For Internet Explorer users. For Safari users.

Once you have enabled cookies for this website, please refresh by clicking here.

Hydro One is introducing a new tool called Ariba in 2018, which will replace our current sourcing tool and bidding engine known as the Bidder Information Database (BID) System. Once available, all existing contracts will be migrated to Ariba’s contract management repository.
Our CURRENT BID System will remain active for a limited time in order FOR SUPPLIERS to close out theIR remaining bids. Password and username resets will also be available on the BID System for a limited time.

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

icon of an account set-up

Join The Ariba Network

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

icon of a magnifying glass over a document with a dollar sign on it

Review RFPs, Submit Proposals

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

icon of documents with a checkmark over them

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, you can register online here: 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:




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.