30 Fair PaymentHow fast UK companies pay their suppliers
  1. Home
  2. Companies
  3. National Grid Electricity Distribution (South Wales) PLC

National Grid Electricity Distribution (South Wales) PLC

Registered as NATIONAL GRID ELECTRICITY DISTRIBUTION (SOUTH WALES) PLC. Company number 02366985. 17 payment practices reports on file, the latest for the period ending 30 September 2026, filed 2 November 2026.

20days 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 Grid Electricity Distribution (South Wales) PLC reported that it took an average of 20 days to pay its suppliers' invoices. It paid 91% of invoices within 30 days, 7% in 31 to 60 days and 2% after more than 60 days. It said 6% of invoices were not paid within the agreed terms.

That average is faster than 80% of the 6,220 companies whose latest report covers a period ending since May 2025. It is unchanged on the same period a year earlier (to 30 September 2025). It reported construction contracts in this period, and said they include retention clauses.

Average days to pay, report by report

30 16 Mar 2021 16 Sep 2021 17 Mar 2022 17 Sep 2022 17 Mar 2023 19 Sep 2023 19 Mar 2024 18 Sep 2024 19 Mar 2025 20 Sep 2025 21 Mar 2026 20 Sep 2026

Bars are labelled with the month the period ended. The dashed line marks 30 days.

Every report filed

PeriodFiledAverage daysWithin 30 days31 to 60Over 60Not within termsSource
Apr to Sep 2026 2 Nov 2026 20 91%7%2%6% Report
Oct 2025 to Mar 2026 11 May 2026 21 93%5%2%4% Report
Apr to Sep 2025 6 Nov 2025 20 94%5%1%4% Report
Oct 2024 to Mar 2025 6 Nov 2025 19 94%5%1%4% Report
Apr to Sep 2024 29 Oct 2024 18 95%4%1%3% Report
Oct 2023 to Mar 2024 1 May 2024 19 93%5%2%4% Report
Apr to Sep 2023 25 Oct 2023 19 93%6%1%3% Report
Oct 2022 to Mar 2023 28 Apr 2023 17 94%5%1%4% Report
Apr to Sep 2022 27 Oct 2022 17 94%5%1%10% Report
Oct 2021 to Mar 2022 27 Apr 2022 17 95%4%1%11% Report
Apr to Sep 2021 21 Oct 2021 16 96%3%1%10% Report
Oct 2020 to Mar 2021 26 Apr 2021 16 96%3%1%11% Report
Apr to Sep 2020 22 Oct 2020 16 95%4%1%12% Report
Oct 2019 to Mar 2020 20 Apr 2020 16 96%3%1%9% Report
Apr to Sep 2019 23 Oct 2019 16 94%5%1%14% Report
Oct 2018 to Mar 2019 23 Apr 2019 21 86%13%1%14% Report
Apr to Sep 2018 24 Oct 2018 21 84%15%1%18% 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.