Invoicing Fact Sheet 

1. What Charge/Payment Detail is shown in on my Invoice/Self Billing Invoice?

2. How do I view my Invoices?

3. What is a Self Billing Invoice?

4. As a Generator will I ever need to make payments to the Market?

5. How is interest calculated on my Resettlement Invoice?

6. How do I change the name shown on my Invoices?

7. What are Currency Costs?

8. Do I get paid in Euro or Sterling?

Back to Top

1. What Charge/Payment Detail is shown in on my Invoice/Self Billing Invoice

The settlement calculations published on a daily basis are aggregated into a weekly invoice for Energy or Variable Market Operator Charge (VMOC), or a monthly invoice for Capacity or Fixed Market Operator Charge (FMOC).

 

The charges or payment line items that may appear on your Invoice/Self Billing Invoice are detailed below:

Energy Market Line Items

For Generators, the invoice line items may include:

  • Energy payment
  • Constraints payment
  • Uninstructed Imbalance payment
  • Make Whole payment
  • Testing Charge

For Suppliers,  the invoice line items may include:

  • Energy charge
  • Imperfections charges
  • Capacity Market Line Items

The invoice line items may include:

  • Capacity period payment for Generator Units
  • Capacity period charge for Supplier Units

VMOC Market

Only Suppliers will receive a VMOC Invoice as this is based on meter demand.

The line item is named “Exchange Variable Market Operator Charge”.

FMOC Market

Both Generators and Supplier will receive a Fixed Market Operator Charge Invoice.

The line item is named “Exchanged Fixed Market Operator Charge”

 

For Generators, the FMOC depends on the number of generating units a Participant has registered against them and also depends on the size of the Generator (i.e. Registered Capacity)

 

For Suppliers, the FMOC depends on the number of supplier units the Participant has registered against them.

 

There is an annual tariff set and approved by the Regulators for both the VMOC and FMOC markets. This changes on a financial year basis.

 

There are no currency cost charges applied to the Market Operator invoices. This is a cost incurred by the Market Operator.

 

VAT will  be applied to all invoices depending on what jurisdiction your units have been registered to , the type of unit i.e. Generator or Supplier and the market type the invoice relates to.

General Invoice Line Items

There are also some line items that are common across all invoices types. These line items may also appear on your Invoice/Self Billing Invoice

 

Currency Costs

All Participant Energy or Capacity Invoices will include currency costs charge or payment line items . For more information on this please refer to the What are currency costs Fact Sheet.

 

VAT

VAT will also be applied to your invoice depending on the following:

type of unit i.e. Generator or Supplier

market type i.e. Energy, Capacity or Market Operator Charge

jurisdiction your units are registered in.

Settlement Reallocation Agreements (SRA)

SRA’s may also be applied to Initial Energy and Capacity invoices only. For more information on SRAs please refer to FAQ What is a Settlement Reallocation Agreement (SRA) and what are their benefits?

 

Interest

Interest is only applicable in the case of Resettlement, there is no interest applied at Initial invoicing stage. Resettlement invoices will calculate the adjusted settlement amounts from the previous invoice issued which means the Participant will pay the Net Amount.

Back to Top

2. How do I view my Invoices?

To View Invoices

Open a web browser and type in https://market.allislandmarket.com/mi_webapps/

This will take you to the Market Participant Interface (MPI)

 

 

 

Note: You will need to have your digital certificate installed to view data on the MPI.

Details of how to request a digital certificate are available in FAQ  ‘What is a digital certificate’

 

Click on Home and scroll down and click on settlements.

 

 

On the menu on the left hand side of the screen click invoices and the below screen will appear. 

 

 

 

Click on the calendar and select the Invoice Publication date you would like to view, for example 23/04/2010. Please note that Invoices will only be available to view in coordination with the Settlement Publication Timelines that can be found in the Settlement Calendar.

 

 

Once you have selected the correct Invoice Publication date, click load on button on the left hand side of the screen.

 

The following list will now appear, select the appropriate PT number eg PT_XXXXX

 

 

 

Once you have selected your PT Number Select download from the list on the left hand side of the screen.

 

 

The following will appear, click open.

The below will appear, double click the icon and your Invoice will open.

 

 

 

The invoice will appear as below. To print click on file move the mouse cursor down to print, select the printer in use and click print.

 

 

 

Alternatively you can click on the invoice number. 

 

The invoice will open as shown below, To print click on file move the mouse cursor down to print, select the printer in use and click print.

Back to Top

3. What is a Self Billing Invoice?

A Self Billing Invoice (SBI) is an invoice prepared by the Market Operator (SEMO) on behalf of a Participant. The SBI specifies either Energy or Capacity payments that are due to the Participant by Market. The SBI will include a due date, this is the date that payment will be made to the Participant by SEMO.

Generally, Generators receive SBI’s for Energy and Capacity as they are owed money by the market  for electricity generated. Suppliers generally receive Invoices as they owe money to the market for demand. However, changes in metered demand may mean that Suppliers receive SBI’s during resettlement, and Generators receive Invoices. See FAQ 'As a Generator will I ever need to make payments to the Market?

Back to Top

4. As a Generator will I ever need to make payments to the Market? 

Yes, there are situations where a Generator will need to make payments to the Market.

In addition to Self Billing Invoices a generator may receive Invoices depending on which market is being settled and whether resettlement is occurring.

 

The following scenarios are possible in the market for Generators:

 

  • Self Billing Invoices – Payments by SEMO to Generators
    • Generally, a Generator will receive an SBI for Initial Energy and Initial Capacity billing periods as a result of generating electricity and providing capacity to the market.
    • Generators may also receive SBI’s for resettlement (M+4, M+13 or Ad-hoc), if an underpayment is calculated.
  • Invoices – Payments by Generators to SEMO    
    • For Energy and Capacity Resettlement (M+4, M+13 or Ad-hoc) a Generator may be issued with an Invoice - where changes in settlement mean the Generator was previously overpaid. This would mainly be the result of updated meter data, settlement query or dispute.
    • A Generator will always receive an Invoice for Fixed Market Operator Charges (FMOC). This is payable to SEMO by the due date specified.

 

Variable Market Operator Charge (VMOC) is only applicable to Supplier Units, therefore a Generator is not affected .

Back to Top

5. How is interest calculated on my Resettlement invoice? 

Interest is applied whenever the Settlement Rerun (M+4, M+13 or Ad-hoc) increases or decreases the total amount payable for a Billing Period or Capacity Period.

Interest in this case is charged at LIBOR plus 1%.

The interest payment is calculated by summing the interest accrued on each day since the last invoice date. Interest will be calculated based on the adjustment amount, for the time period between the original due date for the Billing Period and the due date of the revised invoice.

For more information on this please see Agreed Procedure 15 entitled 'Invoicing' on the SEMO website.

Back to Top

6. How do I change the name shown on my invoices? 

Log on to the MPI at the following web address https://market.allislandmarket.com/mi_webapps/

Navigate to the “Registration” section of the MPI. Under the “Application” tab in the "General Information" section there is an "Organisational Name" field (screen shot shown below)

Amend the Organisational Name that you want to be displayed on your invoice

Ensure your digital certificate and password are entered at the top of the page i.e. In the PFX file and PFX password fields

Update the 'Parameter Effective Date" field on the same screen (Please note, this must be one day greater than the current date)

 

 

Navigate to the bottom of the page and click on the "Submit" button (screen shot shown below)

Any changes in the MPI are reviewed by the Customer Service team on a daily/weekly basis?

Once the change is accepted by the Market Operator this update will be transferred across to the Settlements system the next working day

 

Tip:- Please provide as much notice as possible in order that the change can take affect in the next invoice due to be published.

Back to Top

7. What are Currency Costs?

The Single Electricity Market has been designed to accommodate dual currencies.

As a result there are currency costs, or benefits, associated with the conversion of charges and payments between currencies.

 

Currency costs, or benefits, can arise due to a difference in exchange rates between the:

trade date and date of invoicing – refered to as “Invoicing Period Currency Cost”

invoice date and date of invoice payment – referred to as “Payment Period Currency Cost”

 

The costs/benefits associated with Currency Costs are distributed across Participants.

 

SEMO prepare Currency Cost statements for each Billing Period and Capacity Period. The statements are available from the SEMO website.

 

There are no currency costs applied to Market Operator Charges.

 

For more info on the currency cost calculations please refer to Agreed procedure 15 'Invoicing' Appendix 2


 

Back to Top

8. Do I get paid in Euro or Sterling?

The Single Electricity Market (SEM) operates in the Republic of Ireland and Northern Ireland with dual currencies being Euro and Sterling.

 

The currency associated with a Participant is based on the jurisdiction in which they operate. This is determined as part of the market registration process.

 

If a Participant registers and trades in Northern Ireland they will be paid in Sterling and if they are registered and trade in the Republic of Ireland they will be paid in Euro.

 

As a Participant currency is Jurisdictional, the SEM incurs Currency Costs.
 
These are the cost or benefit of converting the currency necessary to pay Participants given the charges received.

Back to Top

SEMO is a joint venture between EirGrid PLC and SONI Limited