National Energy System Operator Limited
Registered as NATIONAL ENERGY SYSTEM OPERATOR LIMITED. Company number 11014226. 13 payment practices reports on file, the latest for the period ending 30 September 2026, filed 29 October 2026.
21days on average to pay
- Within 30 days
- 31 to 60 days
- Over 60 days
In the reporting period from 1 April 2026 to 30 September 2026, National Energy System Operator Limited reported that it took an average of 21 days to pay its suppliers' invoices. It paid 78% of invoices within 30 days, 14% in 31 to 60 days and 8% after more than 60 days. It said 22% of invoices were not paid within the agreed terms.
That average is faster than 77% of the 6,220 companies whose latest report covers a period ending since May 2025. A year earlier, in the period to 1 September 2025, the average was 20 days, so it is 1 day slower now.
Average days to pay, report by report
Bars are labelled with the month the period ended. The dashed line marks 30 days.
Every report filed
| Period | Filed | Average days | Within 30 days | 31 to 60 | Over 60 | Not within terms | Source |
|---|---|---|---|---|---|---|---|
| Apr to Sep 2026 | 29 Oct 2026 | 21 | 78% | 14% | 8% | 22% | Report |
| Oct 2025 to Mar 2026 | 29 Apr 2026 | 22 | 84% | 15% | 1% | 8% | Report |
| Apr to Sep 2025 | 30 Oct 2025 | 20 | 79% | 19% | 2% | 11% | Report |
| Oct 2024 to Mar 2025 | 29 Apr 2025 | 18 | 78% | 21% | 1% | 9% | Report |
| Apr to Sep 2024 | 21 Nov 2024 | 16 | 84% | 15% | 1% | 9% | Report |
| Oct 2023 to Mar 2024 | 2 May 2024 | 20 | 70% | 30% | 0% | 4% | Report |
| Apr to Sep 2023 | 31 Oct 2023 | 20 | 70% | 29% | 1% | 12% | Report |
| Oct 2022 to Mar 2023 | 28 Apr 2023 | 21 | 72% | 27% | 1% | 25% | Report |
| Apr to Sep 2022 | 27 Oct 2022 | 21 | 66% | 33% | 1% | 25% | Report |
| Oct 2021 to Mar 2022 | 30 Apr 2022 | 20 | 74% | 25% | 2% | 32% | Report |
| Apr to Sep 2021 | 29 Oct 2021 | 16 | 79% | 19% | 1% | 31% | Report |
| Oct 2020 to Mar 2021 | 29 Apr 2021 | 12 | 83% | 15% | 2% | 15% | Report |
| Apr to Sep 2020 | 29 Oct 2020 | 17 | 77% | 19% | 4% | 23% | Report |
Source: the company's filings on Check payment practices. Contains public sector information licensed under the Open Government Licence v3.0. Figures are as filed. We do not change them.