If I have both Meganium with the "Wild Growth" Ability and Venusaur with the "Jungle Totem" Ability in play, does each Basic Grass energy count as 4 Grass energy?
No. Each Ability is a replacement effect, not an additive effect. So one would replace the other and you would still wind up with each Basic Grass energy providing 2 Grass energy.
Jungle TotemWild Growth
Source: TPCi Rules Team (2025-10-23)Oct 23, 2025Compendium → If I have Venusaur with the "Jungle Totem" Ability in play, and I use Typhlosion's "Blazing Energy" or Charizard's "Energy Burn" Ability while it has a Basic
Energy attached, how much
Energy would be provided?
A. Each Basic
Energy provides 
Energy. Even though the Energy type provided changes from
to
, the card name is still Basic
Energy, so Jungle Totem still works.
Blazing EnergyEnergy BurnJungle Totem
Source: TPCi Rules Team (2023-05-11)May 11, 2023Compendium → Does Venusaur's "Jungle Totem" Ability boost the damage output of Rayquaza GX's "Dragon Break" attack since "each Basic
Energy attached to your Pokemon provides 
Energy"?
Yes, just because the Basic Energy card is now providing two units of energy doesn't change the fact that it's still Basic Energy.
Dragon BreakJungle Totem
Source: TPCi Rules Team (2018-08-09)Aug 9, 2018Compendium →