To obtain Energy Nectar, you need to find and kill a Whopperflower at Lvl 60+. Anything above Lvl 60+ also has a chance to drop Whopperflower Nectar and Shimmering Nectar.
You can get these from any of the two Whopperflower enemies, the Cyro and Pyro Whopperflower.
To get Whopperflowers to become Lvl 60+, you need your World Level to become World Level 5 or higher. The most efficient WL to farm is WL 6, as enemies are between Level 64 and 84. This will give you the most consistent enemy Lvl past 60+.
To get to WL 6, you need to have completed the following.
- Be on World Level 5
- Be Adventure Rank 45
- Clear Ascension Quest 3
The fastest way to get around is to use the Waypoints, kill everything in sight, and then move on. The two images below are where you can find Whopperflowers in both Mondstadt and Liyue.
Just click on them to enlarge them.
Thanks to Genshin Impact Interactive Map!
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