Fallout 76 lets you switch between several types of weapons when going out and facing Appalachia's dangers. While firearms might be an immediate go-to for many players, getting a plasma grenade plan can give you access to an alternative solution.
Here are a couple of ways in which you can get the plasma grenade plan in Fallout 76.
Fallout 76 Plasma Grenade Plan
Getting yourself a plasma grenade plan gives you reliable access to the thrown weapon. When setting of to search for the plan, it's worth paying the Glassed Cavern a visit, sprinting to where the Scorchbeast can be found and taking it out.
The plasma grenade plan can also be received as a random reward from completing a handful of Fallout 76's quests and events. These include the Personal Matters quest, where you collect the overseer's personal entries, as well as the repeatable Earth Mover quest. In terms of events, you're looking at Breach and Clear in the Ash Heap, A Mine of Her Own and Battle Bot in the Mount Blair Trainyard.
Once you've obtained the plasma grenade plan you can craft plasma grenades by using one of Fallout 76's tinker's workbenches. the materials required for crafting the item are 1 plasma cartridge, 4 aluminium, 2 circuitry, 4 adhesive, 3 nuclear material and 1 spring. You'll also need the level 4 Demolition Expert perk, as well as the level 1 Science perk.