Annual Electricity Usage Isle of Man
| Authority | Manx Utilities Authority |
|---|---|
| Date received | 2022-08-22 |
| Outcome | Some information sent but not all held |
| Outcome date | 2022-09-20 |
| Case ID | 2594993 |
Summary
The requester asked for detailed electricity usage data broken down by dwelling type, bedrooms, and occupants for the last 10 years and monthly data for 2019-2021. The Manx Utilities Authority disclosed that they do not hold the specific demographic breakdowns requested but provided aggregate annual and quarterly electricity demand figures in millions of kWh by tariff type.
Key Facts
- Manx Utilities does not collect or hold data on dwelling type, number of bedrooms, or number of occupants as part of customer accounts.
- The authority provided aggregate annual electricity demand figures for 9 years (2013-2021) broken down by Domestic, Non-Domestic, Demand, and Public Lighting.
- Monthly data for 2019-2021 was not provided because most domestic meters are read on a quarterly basis.
- Quarterly raw data extracts for 2019, 2020, and 2021 were supplied instead of the requested monthly breakdown.
- The 2021 Isle of Man Census report was recommended as an alternative source for household statistics.
Data Disclosed
- 2022-08-22
- 2022-09-20
- 2013-2021
- 2019-2021
- 166 million kWh (Domestic 2013)
- 381 million kWh (Total 2013)
- 354 million kWh (Total 2021)
- 42.5 million kWh (Domestic Q1 2019)
- 93.9 million kWh (Total Q1 2019)
Exemptions Cited
- Information not held by the public authority
Original Request
Please supply me with the data for electricity demand from the MUA for the last 10 annual periods. This data needs to be broken down by dwelling type, dwelling number of bedrooms, number of occupants (if known) and the average annual demand figure for that type of property. Table columns as below. Year | Dwelling Type | Number of Bedrooms | No of Occupants | Average Total Annual Electricity demand Kwh Furthermore, please supply the data again but for a monthly basis for the period January 2019 through to December 2021 (full two year period), columns again as below. Year | Month |Dwelling Type | Number of Bedrooms | No of Occupants | Average Total Annual Electricity demand Kwh Thank you.
Data Tables (5)
| The annual report and financial statements are produced yearly ending 31 March. |
|---|
| Those for the year-end 2022, are currently being finalised and agreed, and will be |
| publicly available when laid before Tynwald; this will occur in the coming months. |
| For year-end: | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|---|---|---|---|
| Domestic | 166 | 160 | 157 | 152 | 149 | 161 | 158 | 155 | 162 |
| Non Domestic | 76 | 72 | 70 | 69 | 70 | 65 | 66 | 67 | 58 |
| Demand | 134 | 137 | 137 | 141 | 139 | 133 | 135 | 141 | 128 |
| Public lighting | 5 | 4 | 4 | 5 | 4 | 4 | 3 | 3 | 3 |
| Total | 381 | 373 | 368 | 367 | 362 | 363 | 362 | 366 | 354 |
| • Domestic = for those meters on various domestic tariffs - includes prepay and credit meters; |
|---|
| • Non domestic = for those meters on various business or commercial tariffs; |
| • Demand = these are industrial and high demand users; |
| • Public lighting = as described - usage by public and street lighting. |
| Regarding the second part of your request for monthly breakdown of these figures for |
| the period January 2019 – December 2020; Manx Utilities do not hold this readily |
| accessible demand data, on monthly basis. Such detail would have to be derived and |
| collated as the majority of domestic meters are only read on quarterly basis (an |
| average of 1/3 each month). |
| To provide further help and assistance, and provide information that we do hold, we |
| are able to provide extracts from our quarterly reports that record raw data of demand |
| usage per quarter. They include estimated data, without network adjustments, yet are |
| the best figures currently for all island demand at given time. The figures are not |
| necessarily reflective of demand in that period due to the readings taken on a rolling |
| usage basis. These show in kWh usage, the figures are in millions: |
| 2019 | 2020 | 2021 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | Q1 | Q2 | Q3 | Q4 | Q1 | Q2 | Q3 | Q4 | |
| Domestic | 42.5 | 38.7 | 34.3 | 31.4 | 46.7 | 41.9 | 30.3 | 42.7 | 42.9 | 39.0 | 38.0 | 37.2 |
| Non Domestic | 16.3 | 17.0 | 15.4 | 16.0 | 16.4 | 15.4 | 12.2 | 15.2 | 15.4 | 14.3 | 14.7 | 15.0 |
| Demand | 34.2 | 34.1 | 32.8 | 34.6 | 34.7 | 30.2 | 30.9 | 32.9 | 33.2 | 30.6 | 31.4 | 33.8 |
| Public lighting | 0.9 | 0.8 | 0.7 | 0.7 | 0.8 | 0.8 | 0.6 | 0.6 | 0.8 | 0.1 | 1.3 | 0.6 |
| Total | 93.9 | 90.6 | 83.2 | 82.7 | 98.6 | 88.3 | 74.0 | 91.4 | 91.4 | 84.0 | 85.4 | 86.6 |
| ** Caveat: each quarterly demand figure reflects meters read or bills estimated during that 3 |
|---|
| month period. For example, Q1 2019 demand reflects usage in a 6 month period, depending |
| on when the meter was read or estimated, it covers a rolling period between Oct/Nov/Dec 2018 |
| (if read early Jan 2019) through to Jan/Feb/Mar 2019 (if read end of March 2019). |
| The roll out of smart meters will enable Manx Utilities to have access to more timely |
| data in the future and allow an improved, accurate and reflective understanding of |
| electric demand and network performance; please see Smarter Living on our website |
| for more information on the smart meter programme. |
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: 2594993 20 September 2022
Dear ###
We write further to your request which was received on 22 August 2022 and which states:
"Please supply me with the data for electricity demand from the MUA for the last 10 annual periods. This data needs to be broken down by dwelling type, dwelling number of bedrooms, number of occupants (if known) and the average annual demand figure for that type of property. Table columns as below. Year | Dwelling Type | Number of Bedrooms | No of Occupants | Average Total Annual Electricity demand Kwh Furthermore, please supply the data again but for a monthly basis for the period January 2019 through to December 2021 (full two year period), columns again as below. Year | Month |Dwelling Type | Number of Bedrooms | No of Occupants | Average Total Annual Electricity demand Kwh"
While our aim is to provide information whenever possible, in this instance the public
authority does not hold or cannot, after taking reasonable steps to do so, find some of
the information that you have requested. This is because we do not, as standard, hold
or collect detailed information on a dwelling type, number of bedrooms, or the number
of occupants, as part of our electric customer account.
To supply some advice and assistance that may assist with these specific figures and
relating to household statistics, can be found in the 2021 Isle of Man Census report;
released by the Cabinet Office: https://www.gov.im/media/1376421/2021-isle-of-man-
census-report-part-ii_11052022.pdf (from page 19)
Regarding the first part of your request, Manx Utilities do publish the annual demand
in kWh usage (in millions), the figure is included in our annual report and financial
statements. The reports availed since the formation of Manx Utilities in 2014 following
the merger of the Isle of Man Water and Sewerage Authority and the Manx Electricity
Authority, are available on our website: https://www.manxutilities.im/.
Annual Report & Financial Statements 2020/2021 (page 65)
Annual Report & Financial Statements 2019/2020 (page 54)
Annual Report & Financial Statements 2018/2019 (page 53)
Annual Report & Financial Statements 2017/2018 (page 35)
Annual Report & Financial Statements 2016/2017 (page 46)
Annual Report & Financial Statements 2015/2016 (page 49)
Annual Report & Financial Statements 2014/2015 (page 46)
Annual Report & Financial Statements 2013/2014 (page 22)
The annual report and financial statements are produced yearly ending 31 March.
Those for the year-end 2022, are currently being finalised and agreed, and will be
publicly available when laid before Tynwald; this will occur in the coming months.
To assist here are the annual demand for 9 years, summarised from the published
reports, are above as follows. These show in kWh usage, the figures are in millions:
•
Domestic = for those meters on various domestic tariffs - includes prepay and credit meters;
•
Non domestic = for those meters on various business or commercial tariffs;
•
Demand = these are industrial and high demand users;
•
Public lighting = as described - usage by public and street lighting.
Regarding the second part of your request for monthly breakdown of these figures for
the period January 2019 – December 2020; Manx Utilities do not hold this readily
accessible demand data, on monthly basis. Such detail would have to be derived and
collated as the majority of domestic meters are only read on quarterly basis (an
average of 1/3 each month).
To provide further help and assistance, and provide information that we do hold, we
are able to provide extracts from our quarterly reports that record raw data of demand
usage per quarter. They include estimated data, without network adjustments, yet are
the best figures currently for all island demand at given time. The figures are not
necessarily reflective of demand in that period due to the readings taken on a rolling
usage basis. These show in kWh usage, the figures are in millions:
For year-end:
2013
2014
2015
2016
2017
2018
2019
2020
2021
Domestic
166
160
157
152
149
161
158
155
162
Non Domestic
76
72
70
69
70
65
66
67
58
Demand
134
137
137
141
139
133
135
141
128
Public lighting
5
4
4
5
4
4
3
3
3
Total
381
373
368
367
362
363
362
366
354
2019
2020
2021
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Domestic
42.5
38.7
34.3
31.4
46.7
41.9
30.3
42.7
42.9
39.0
38.0
37.2
Non Domestic
16.3
17.0
15.4
16.0
16.4
15.4
12.2
15.2
15.4
14.3
14.7
15.0
Demand
34.2
34.1
32.8
34.6
34.7
30.2
30.9
32.9
33.2
30.6
31.4
33.8
Public lighting
0.9
0.8
0.7
0.7
0.8
0.8
0.6
0.6
0.8
0.1
1.3
0.6
Total
93.9
90.6
83.2
82.7
98.6
88.3
74.0
91.4
91.4
84.0
85.4
86.6
** Caveat: each quarterly demand figure reflects meters read or bills estimated during that 3 month period. For example, Q1 2019 demand reflects usage in a 6 month period, depending on when the meter was read or estimated, it covers a rolling period between Oct/Nov/Dec 2018 (if read early Jan 2019) through to Jan/Feb/Mar 2019 (if read end of March 2019). The roll out of smart meters will enable Manx Utilities to have access to more timely data in the future and allow an improved, accurate and reflective understanding of electric demand and network performance; please see Smarter Living on our website for more information on the smart meter programme. Please quote the reference number 2594993 in any future communications.
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