| | ACER task | Type of action | Legal basis |
| 1. | Opinion on draft statutes, list of members and draft rules of procedure of ENTSOs | Opinion to ENTSOs | Article 6(1) AReg;
Article 5(2) E&GReg |
| 2. | Monitor execution of tasks of ENTSOs | Monitoring | Article 6(2) AReg;
Article 9 E&GReg |
| 3. | Opinion to ENTSOs on draft annual work programme, draft Community-wide network development plan and other relevant documents (e.g. annual summer and winter supply outlooks) | Opinion to ENTSOs | Article 6(3) AReg;
Article 8(2)+(3), 9(2) E&GReg; |
| 4. | Opinion on consistency of national 10YNDP with Community-wide 10YNDP | Opinion (to NRAs) | Article 22(5) E&GDir |
| 5. | Opinions/recommendations where draft annual work programme or draft Community-wide 10YNDP do not contribute to internal energy market objectives/principles | Opinion, recommendation to ENTSOs, EP, Council and Commission | Article 6(4) AReg;
Article 9(2) E&GReg |
| | Tasks regarding Framework Guidelines (FG) and Network Codes (NC) | | |
| 6. | Submit non-binding FG to the Commission, consultation on FG; if necessary, review FG and re-submit it to the Commission | Submit draft to the Commission | Article 6(4) AReg;
Article 6(2)-(4) E&GReg |
| 7. | Opinion on network code | Opinion to ENTSOs | Article 6(4) AReg;
Article 6(7) E&GReg |
| 8. | Submit NC and recommend that it be adopted; | Submit draft to the Commission | Article 6(4) AReg;
6(9)+(10), 7(1) E&GReg |
| 9. | Prepare and submit draft NC; | Submit draft to the Commission | Article 6(4) AReg;
Article 6(9)+(10), 7(1) E&GReg |
| 10. | Propose amendments of NC; | Submit draft to the Commission | Article 6(4) AReg;
Article 6(9)+(10), 7(1) E&GReg |
| 11. | Duly reasoned opinion where ENTSO-E or ENTSO-G have failed to implement NC; | Opinion to the Commission | Article 6(5) AReg;
Article 8(2), 9(1) E&GReg |
| 12. | Monitor and analyse implementation of NC and Guidelines, report to the Commission. | Monitoring, reporting to the Commission | Article 6 AReg;
Article 9 E&GReg |
| 13. | Monitor progress as regards implementation of projects to create new interconnector capacity. | Monitoring | Article 6(7) AReg |
| 14. | Monitor implementation of Community-wide NDPs; | Monitoring | Article 6(8) AReg;
Article 8(11) E&Greg |
| 15. | Investigate reasons for inconsistencies between Community-wide NDPs and their implementation, and make recommendations; | Recommendation to TSOs, NRAs or other competent bodies | Article 6(8) AReg;
Article 8(11) E&GReg |
| 16. | Monitor regional cooperation of TSOs; due account of outcome of cooperation taken when formulating its opinions, recommendations and decisions | Monitoring | Article 6(9) AReg;
Article 12 E&GReg |
| 17. | Approve compliance programmes of joint undertakings for regional cooperation participated by certically-integrated TSOs | Approval | Article 6(4) E&GDir |
