The Q2 Quarterly Adjustment to the Tier I AEC credit requirement has been published and can be found at the Electricity Suppliers portion of the PennAEPS website. The Quarterly Adjustments for Energy Year 2021 are:
| Quarter | Tier I Quarterly Adjustment | Tier I with Quarterly Adjustment |
| Q1 2021 | 0.287397% | 7.787397% |
| Q2 2021 | 0.348938% | 7.848938% |