If Temple of Sinnoh is in play, does Double Turbo Energy provide one energy or two.
It would only provide one {C} Energy and would not reduce the Attack damage.
Source: Astral Radiance FAQ; TPCi Rules Team (2022-05-26)

Relevant cards

Note: All applicable cards may not be listed below.
SWSH10_155
SWSH10_155
SWSH9_151
SWSH9_151