It would be great to see Energy Star certification on Ilumin bulbs. They already seem to clear the bar in key respects, like lm/W. Many utility companies provide rebates for purchasing Energy Star certified bulbs.
From what I understand, the hold up is the chipset itself, perhaps the standby power draw keeping the Z-Wave chip running. Apparently the old 500 series Z-Wave chipset doesn’t meet current energy standards; the newer 700 series would but there are semiconductor shortages in a great many industries right now so I’ve heard that Silicon Labs is having trouble with availability.