written by In a recent notification dated 21st March 2024, BEE has issued a notification for all the manufacturers/permittees of Solar Photovoltaic Modules (also called solar panels) w.r.t energy efficiency criteria. Here’s a comparison of the old and new ratings:
Existing Star labelling criteria for Solar PV modules
| Star Rating | Effective efficiency ɳeff (%) |
| 1 Star | >=17% & <=18% |
| 2 Star | >18% & <=20% |
| 3 Star | >20% &<=21% |
| 4 Star | >21% &<=22% |
| 5 Star | >22% |
Revised Star labelling criteria for Solar PV modules
| Star Rating | Effective efficiency ɳeff (%) |
| 1 Star | >=17% & <=18% |
| 2 Star | >18% & <=19% |
| 3 Star | >19% &<=20% |
| 4 Star | >20% &<=21% |
| 5 Star | >21% |
For more information, you can check the official notification here.
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