As at 31 December 2020 the Iren Group had 8,680 employees, up compared to 8.102 employees as at 31 December 2019, as the table below shows, divided into Holding and first‐level companies and related subsidiaries.
| Company | Workforce at 31.12.2020 |
Workforce at 31.12.2019 |
| Iren S.p.A. | 1,063 | 1,060 |
| IRETI and subsidiaries | 2,154 | 2,150 |
| Iren Ambiente and subsidiaries | 4,065 | 3,508 |
| Iren Energia and subsidiaries | 874 | 875 |
| Iren Mercato and subsidiaries | 524 | 509 |
| Total | 8,680 | 8,102 |
The main changes in the workforce compared to 31 December 2020 were ascribable to:
- the acquisition, in August 2020, by Iren Ambiente of the company I.Blu for a total of 291 resources;
- the acquisition, in November 2020, of Unieco Environment Division for a total of 217 resources;
- the company San Germano due to the launch/conclusion of contracted services, including seasonal work;
- continuation of the generational turnover plan, with a considerable number of recruitments on the labour market.