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Home > Customers > Generators
Hydro One connects generating facilities to the distribution system,
delivering the electricity they produce at hydroelectric, coal, natural
gas, wind and other facilities to businesses and people across Ontario.
We work with these customers to plan for the future and make sure facilities
are in place to deliver electricity where it needs to be. Hydro One is
committed to working with prospective generators on the provincial government's
Request for Proposal
(RFP) for renewable generation. To help generators keep track of their
applications, we have also developed a new Queue
Process for generation projects.
 Distribution
facilities operate at voltages of 50 kV or less.
For distribution-connected generation of less than or equal to
10 kW, a customer must submit a Form
C application. For these projects, a Connection Impact Assessment
(CIA) will not be required and Hydro One will not perform such
an assessment. There may be limitations on the number of micro-generation
facilities that can be connected to the same distribution feeder.
For a distribution-connected generating facility of greater than
10 kW, a Distribution Connection
Impact Assessment is required to assess the impacts on the
electricity system. If the proposed generating capacity is greater
than 10 MW, a Transmission Customer Impact Assessment must be
completed by Hydro One and a System Impact Assessment must be
completed by the IESO as well.
NOTE: All technical submissions (Form B, single line diagrams,
etc.) for projects greater than 10 kW must be signed and sealed
by a licensed Ontario Professional Engineer (P.ENG).
Estimated Turnaround Times for New Assessments (i.e. for projects
that are not yet in the queue)
Information on estimated turnaround times for assessments is provided
to assist prospective generators in their project planning and does
not constitute a firm commitment.
Hydro One continues to receive a high volume of requests for Initial
Feasibility Assessments (IFAs) and Connection Impact Assessments
(CIAs) for proposed generation connections to its distribution system.
As a result, current turnaround times are up to 3 months from the
date of an application for an IFA, and about 5 months from the date
of application for a CIA.
After the receipt of an application for an assessment (Initial
Feasibility Assessment Form A or Connection
Impact Assessment Form B), Hydro One will assign the project
for assessment on a 'first come, first served' basis. Once a project
has been assigned, Hydro One will contact the customer directly
and commit to a completion date for the assessment.
Please note that only complete CIA applications
are added to Hydro One's Distribution Generation Connections Application
List. IFA applications are not placed on the List.
Note: The Ontario Energy Board compliance office has clarified
that assessments of proposed modifications to projects (reworks)
that are already in the queue will take precedence over assessments
of projects that are not yet in the queue. As a result, the estimated
wait time for new CIAs could change based on the volume of requests
for CIA modification of projects already in the queue.
Initial Feasibility Assessment (IFA)
 Prospective
proponents may apply for an IFA using a Form
A.
The IFA is a free assessment provided by Hydro One to evaluate
initial technical feasibility of connecting a project to the grid.
This includes the evaluation of station capacity, feeder capacity
and the need for major grid protection modification as a result
of inflow of electricity from distributed generation.
If you do not wish to complete the IFA
Form A online, fax back the IFA
Form A (MSWord - 105 KB) and other supporting documents to 416-345-5443,
Attn: Generation Connections Coordinator. To contact Hydro One,
e-mail Gen.Connect@HydroOne.com
or call 1-866-280-7712.
Before submitting an IFA application, prospective proponents can
also obtain Hydro One's corresponding Distribution Operating Map
(DOM) related to their intended location by a simple e-mail request
to Gen.Connect@HydroOne.com
or by calling 1-866-280-7712. This information is provided by Hydro
One at no cost to you.
An IFA is an optional preliminary step. In Hydro One's interconnected
process, prospective proponents may skip the IFA stage and start
the process by submitting a CIA
application (Form B).
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Connection Impact Assessment (CIA)
A CIA is a more detailed assessment of a project's impact to the grid.
The results include a technical report outlining project feasibility,
technical specifications needed for the project and the impacts the project
would have on the distribution grid.
The Generator is required to submit a completed Connection
Impact Assessment Form B (MS Word - 189 KB), payment for the Connection
Impact Assessment and a signed Study Agreement. Please contact GCD.Coordinator@HydroOne.com
for a study agreement suited to your project size.
Connection Impact Assessment Fee Schedule
| Project Type |
Project Size |
Cost* |
| Micro Projects |
Up to 10 kW |
No Charge |
| Net Metering Projects |
>10 kW and ≤ 500 kW |
$5,500.00 (includes fee for cost estimate) |
| Small Projects (Except Net Metering) |
≤ 500 kW |
$7,000.00 (includes $4,000 fee for Cost Estimate) |
| Mid-Size Projects |
> 500 and ≤ 10 MW |
$5,000.00 |
| Large Projects |
> 10 MW |
$6,000.00 |
*Please add 5% GST to all fees quoted
above.
Connection Cost Estimate
Once all required assessments are complete (including assessments by
the IESO, when required), the scope of work required to connect new generation
can be developed and estimates be prepared. The Generator is required
to submit a signed Estimate Agreement along with payment for a Release
Quality Assessment.
Design and Build
Once agreement of the scope, cost and timing are reached, the Generator
is required to sign a Connection Cost Recovery Agreement. After submitting
the agreement and payment, detailed design and construction may begin.
Connect, Operate and Maintain
Once all of the required work and approvals are completed, the Distribution
Connection Agreement, signed by Hydro One and the Generator, provides
an outline of the connection as well as the roles and responsibilities
of each party.
Still have questions?
If you are interested in connecting a generation facility to Hydro One's
network, please see our Frequently Asked
Questions, e-mail
Gen.Connect@HydroOne.com
or call 1-866-280-7712.
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