The cost to produce 1 unit of electricity (1 KW) vs 2021

Summary

The requester asked for the average cost to produce one unit of electricity for 2020 and the most recent year, including a breakdown by generation method. The authority provided links to annual reports for calculating average costs but stated they do not hold full cost-per-kWh data by generation method, offering marginal cost figures instead.

Key Facts

• The average cost per kWh for 2020-21 is derived from the Annual Report and Financial Statements, specifically Note 5 on page 65.
• The most recent full year with published data is 2023-24, with relevant data on page 62 of the annual report.
• Manx Utilities does not hold full cost-per-kWh information by generation method due to unallocated fixed and overhead costs.
• Marginal cost information by generation type was provided for both 2020/21 and 2023/24.
• The response cites Section 20 of the Act regarding information already reasonably accessible to the public.

Data Disclosed

• 2020-21
• 2023-24
• 3.3 p/kWh
• 8.5 p/kWh
• 3.2 p/kWh
• 8.1 p/kWh
• 9.6 p/kWh
• 29.6 p/kWh
• 2.9 p/kWh
• 6.8 p/kWh
• 5.9 p/kWh
• 14.1 p/kWh
• 0.0 p/kWh
• Page 65
• Page 62
• Section 20

Exemptions Cited

• Section 20 of the Freedom of Information Act 2015 (Information reasonably accessible)

Original Request

The average cost to Manx Utilities Authority of producing one unit (kilowatt hour) of electricity during calendar year 2020. The average cost to Manx Utilities Authority of producing one unit (kilowatt hour) of electricity for the most recent full year for which data is available. Where available, a breakdown of the costs in items (1) and (2) by electricity generation method. If any part of this request is subject to exemption, please provide all non-exempt information held. I am content to receive the information electronically.

Data Tables (2)

Full Response Text

Manx Utilities PO Box 177, Douglas Isle of Man, IM99 1PS

e: enquiries@manxutilities.im t: 01624 687687 www.manxutilities.im

Our ref: 5274217 12 February 2026

Dear ###

We write further to your request, received 3 February 2026, which states:

"The average cost to Manx Utilities Authority of producing one unit (kilowatt hour) of electricity during calendar year 2020.

The average cost to Manx Utilities Authority of producing one unit (kilowatt hour) of electricity for the most recent full year for which data is available.

Where available, a breakdown of the costs in items (1) and (2) by electricity generation method.

If any part of this request is subject to exemption, please provide all non-exempt information held.

I am content to receive the information electronically."

Further clarification offered on 10/02/2026

“I’m happy with the financial year data, and I’m happy with financial year 2020-21 to compare against the most recent year you have on record.”

Our response to your request is as follows:

1. Average cost per kilowatt hour – 2020 This information is available from Manx Utilities’ published Annual Report and Financial Statements for 2020–21. The average cost of producing and distributing one unit of electricity can be derived by dividing the operating costs of electricity supply segment of the business by the total units of electricity sold during the period. The report is available online at: www.manxutilities.im > About Us > Annual Reports & Financial Statements or
   direct link https://manxutilities.im/media/waqft0sp/annual-report-and-financial- statements-2020-2021.pdf and relevant data is in Note 5 on page 65.

2. Average cost per kilowatt hour – most recent full year. The most recent full year for which published data is available is 2023–24. As with the 2020 data, the average cost per kWh can be calculated from the operating costs of electricity supply segment of the business and the total electricity units sold, both of which

are included in the financial statements. The report is available at: www.manxutilities.im > About Us > Annual Reports & Financial Statements or
direct link https://manxutilities.im/media/radbhxbh/manx-utilities-annual-report- and-accounts-2023-2024.pdf and again the relevant data is on page 62.

While our aim is to provide information whenever possible, under section 20 of the Act, we are not required to provide information in response to a request if it is already reasonably accessible to you, whether free of charge or on payment of a fee. Some of the information that you have requested is available from the links included above.

1. Manx Utilities does not hold full cost-per-kWh information by generation method in a form that would allow the calculation of average costs equivalent to items (1) and (2). However, marginal cost information by generation type is available.
   2020/21 p/kWh 2023/24 p/kWh Average 3.3 Average 8.5 CCGT 3.2 CCGT 8.1 Diesel 9.6 Diesel 29.6 Efw 2.9 EfW 6.8 Import 5.9 Import 14.1 Hydro 0.0 Hydro 0.0

EFW – Energy from waste CCGT – Combined Cycle Gas Turbine Import – Via the interconnector

This reflects the variable cost of producing an additional unit of electricity for different generation assets. Fixed and overhead costs are not allocated at this level, and therefore a full average-cost breakdown cannot be provided.

Please quote the reference number 5274217 in any future communications.

Your right to request a review

If you are unhappy with this response to your freedom of information request, you may ask us to carry out an internal review of the response, by completing a complaint form and submitting it electronically or by delivery/post.

An electronic version of our complaint form can be found by going to our website at https://services.gov.im/freedom-of-information/Review . If you would like a paper version of our complaint form to be sent to you by post, please contact me and I will be happy to arrange for this. Your review request should explain why you are dissatisfied with this response, and should be made as soon as practicable. We will respond as soon as the review has been concluded.

If you are not satisfied with the result of the review, you then have the right to appeal to the Information Commissioner for a decision on; 1. Whether we have responded to your request for information in accordance with Part 2 of the Freedom of Information Act 2015; or 2. Whether we are justified in refusing to give you the information requested.
In response to an application for review, the Information Commissioner may, at any time, attempt to resolve a matter by negotiation, conciliation, mediation or another form of alternative dispute resolution and will have regard to any outcome of this in making any subsequent decision. More detailed information on your right to a review can be found on the Information Commissioner’s website at www.inforights.im. Should you have any queries concerning this letter, please do not hesitate to contact me. Further information about freedom of information requests can be found at www.gov.im/foi. I will now close your request as of this date.