Energy Ball is learned by 44 species by level, 244 by machine, 4 by tutor and 4 by egg

Effect, in PokéAPI's words

“Has a chance to lower the target’s Special Defense by one stage.”

Who learns it

244 species in all, 4 of 13 games shown

Scarlet and Violet: 175 species

Species	Method	Level
Whimsicott	Level up, Machine	1
Lilligant	Level up, Machine	1
Deerling	Level up, Machine	28
Sawsbuck	Level up, Machine	28
Treecko	Level up, Machine	30
Petilil	Level up, Machine	30
Smoliv	Level up, Machine	30
Sprigatito	Level up, Machine	32
Dolliv	Level up, Machine	34
Arboliva	Level up, Machine	34
Cottonee	Level up, Machine	36
Floragato	Level up, Machine	38
Dipplin	Level up, Machine	40
Hydrapple	Level up, Machine	40
Cacnea	Level up, Machine	42
Meowscarada	Level up, Machine	42
Lotad	Level up, Machine	43
Cacturne	Level up, Machine	44
Appletun	Level up, Machine	44
Calyrex	Level up, Machine	48
Lombre	Level up, Machine	57
Zarude	Level up, Machine	60
Shaymin	Level up, Machine	73
Bulbasaur	Machine
Ivysaur	Machine
Venusaur	Machine
Vulpix	Machine
Ninetales	Machine
Jigglypuff	Machine
Wigglytuff	Machine
Oddish	Machine
Gloom	Machine
Vileplume	Machine
Venonat	Machine
Venomoth	Machine
Bellsprout	Machine
Weepinbell	Machine
Victreebel	Machine
Gastly	Machine
Haunter	Machine
Gengar	Machine
Exeggcute	Machine
Exeggutor	Machine
Mewtwo	Machine
Mew	Machine
Chikorita	Machine
Bayleef	Machine
Meganium	Machine
Bellossom	Machine
Hoppip	Machine
Skiploom	Machine
Jumpluff	Machine
Sunkern	Machine
Sunflora	Machine
Misdreavus	Machine
Girafarig	Machine
Stantler	Machine
Grovyle	Machine, Egg
Sceptile	Machine, Egg
Ludicolo	Machine, Egg
Seedot	Machine
Nuzleaf	Machine
Shiftry	Machine
Gardevoir	Machine
Masquerain	Machine
Shroomish	Machine
Breloom	Machine
Sableye	Machine
Medicham	Machine
Grumpig	Machine
Tropius	Machine
Chimecho	Machine
Latias	Machine
Latios	Machine
Rayquaza	Machine
Jirachi	Machine
Deoxys	Machine
Turtwig	Machine
Grotle	Machine
Torterra	Machine
Mismagius	Machine
Chingling	Machine
Snover	Machine
Abomasnow	Machine
Leafeon	Machine
Gallade	Machine
Uxie	Machine
Mesprit	Machine
Azelf	Machine
Giratina	Machine
Cresselia	Machine
Manaphy	Machine
Arceus	Machine
Snivy	Machine
Servine	Machine
Serperior	Machine
Sewaddle	Machine
Swadloon	Machine
Leavanny	Machine
Gothita	Machine
Gothorita	Machine
Gothitelle	Machine
Solosis	Machine
Duosion	Machine
Reuniclus	Machine
Foongus	Machine
Amoonguss	Machine
Joltik	Machine
Galvantula	Machine
Litwick	Machine
Lampent	Machine
Chandelure	Machine
Virizion	Machine
Meloetta	Machine
Chespin	Machine
Quilladin	Machine
Chesnaught	Machine
Vivillon	Machine
Flabébé	Machine
Floette	Machine
Florges	Machine
Skiddo	Machine
Gogoat	Machine
Espurr	Machine
Meowstic	Machine
Phantump	Machine
Trevenant	Machine
Hoopa	Machine
Rowlet	Machine
Dartrix	Machine
Decidueye	Machine
Primarina	Machine
Vikavolt	Machine
Cutiefly	Machine
Ribombee	Machine
Fomantis	Machine
Lurantis	Machine
Bounsweet	Machine
Steenee	Machine
Tsareena	Machine
Comfey	Machine
Oranguru	Machine
Passimian	Machine
Sandygast	Machine
Palossand	Machine
Magearna	Machine
Grookey	Machine
Thwackey	Machine
Rillaboom	Machine
Flapple	Machine
Alcremie	Machine
Indeedee	Machine
Wyrdeer	Machine
Oinkologne	Machine
Armarouge	Machine
Bramblin	Machine
Brambleghast	Machine
Toedscool	Machine
Toedscruel	Machine
Capsakid	Machine
Scovillain	Machine
Rabsca	Machine
Espathra	Machine
Glimmora	Machine
Farigiraf	Machine
Brute Bonnet	Machine
Flutter Mane	Machine
Iron Moth	Machine
Wo-Chien	Machine
Iron Valiant	Machine
Iron Leaves	Machine
Poltchageist	Machine
Sinistcha	Machine
Ogerpon	Machine
Terapagos	Machine

Legends Arceus: 17 species

Species	Method	Level
Cherubi	Level up	21
Cherrim	Level up	21
Petilil	Level up	21
Tangela	Level up	25
Wormadam	Level up, Tutor	25
Snover	Level up	25
Abomasnow	Level up	25
Tangrowth	Level up	25
Shaymin	Level up, Tutor	36
Roselia	Level up	43
Budew	Level up	43
Roserade	Level up	43
Carnivine	Level up	43
Paras	Level up	47
Parasect	Level up	47
Vulpix	Tutor
Ninetales	Tutor

Brilliant Diamond and Shining Pearl: 91 species

Species	Method	Level
Grovyle	Level up, Machine	1
Sceptile	Level up, Machine	1
Ludicolo	Level up, Machine	1
Treecko	Level up, Machine	30
Cacnea	Level up, Machine	42
Lotad	Level up, Machine	43
Cacturne	Level up, Machine	44
Lileep	Level up, Machine	44
Cradily	Level up, Machine	48
Lombre	Level up, Machine	57
Bulbasaur	Machine
Ivysaur	Machine
Venusaur	Machine
Butterfree	Machine
Vulpix	Machine
Ninetales	Machine
Oddish	Machine
Gloom	Machine
Vileplume	Machine
Parasect	Machine
Venomoth	Machine
Abra	Machine
Kadabra	Machine
Alakazam	Machine
Bellsprout	Machine
Weepinbell	Machine
Victreebel	Machine
Gastly	Machine
Haunter	Machine
Gengar	Machine
Exeggcute	Machine
Exeggutor	Machine
Tangela	Machine
Mr. Mime	Machine
Jynx	Machine
Mewtwo	Machine
Mew	Machine
Chikorita	Machine
Bayleef	Machine
Meganium	Machine
Bellossom	Machine
Hoppip	Machine
Skiploom	Machine
Jumpluff	Machine
Sunkern	Machine
Sunflora	Machine
Girafarig	Machine
Octillery	Machine
Stantler	Machine
Celebi	Machine
Beautifly	Machine
Dustox	Machine
Seedot	Machine
Nuzleaf	Machine
Shiftry	Machine
Gardevoir	Machine
Masquerain	Machine
Shroomish	Machine
Breloom	Machine
Medicham	Machine
Roselia	Machine
Grumpig	Machine
Castform	Machine
Tropius	Machine
Chimecho	Machine
Latias	Machine
Latios	Machine
Rayquaza	Machine
Jirachi	Machine
Turtwig	Machine
Grotle	Machine
Torterra	Machine
Budew	Machine
Roserade	Machine
Wormadam	Machine
Mothim	Machine
Cherubi	Machine
Cherrim	Machine
Mismagius	Machine
Carnivine	Machine
Snover	Machine
Abomasnow	Machine
Tangrowth	Machine
Leafeon	Machine
Gallade	Machine
Uxie	Machine
Mesprit	Machine
Azelf	Machine
Giratina	Machine
Cresselia	Machine
Manaphy	Machine

Sword and Shield: 147 species

Species	Method	Level
Grovyle	Level up, Machine	1
Sceptile	Level up, Machine	1
Ludicolo	Level up, Machine	1
Whimsicott	Level up, Machine	1
Lilligant	Level up, Machine	1
Swirlix	Level up, Machine	27
Slurpuff	Level up, Machine	27
Treecko	Level up, Machine	30
Petilil	Level up, Machine	30
Cottonee	Level up, Machine	36
Lotad	Level up, Machine	43
Lileep	Level up, Machine	44
Appletun	Level up, Machine	44
Cradily	Level up, Machine	48
Calyrex	Level up, Machine	48
Dhelmise	Level up, Machine	56
Lombre	Level up, Machine	57
Zarude	Level up, Machine	60
Bulbasaur	Machine
Ivysaur	Machine
Venusaur	Machine
Butterfree	Machine
Vulpix	Machine
Ninetales	Machine
Oddish	Machine
Gloom	Machine
Vileplume	Machine
Abra	Machine
Kadabra	Machine
Alakazam	Machine
Gastly	Machine
Haunter	Machine
Gengar	Machine
Exeggcute	Machine
Exeggutor	Machine
Tangela	Machine
Mr. Mime	Machine
Jynx	Machine
Mewtwo	Machine
Mew	Machine
Bellossom	Machine
Octillery	Machine
Celebi	Machine
Seedot	Machine
Nuzleaf	Machine
Shiftry	Machine
Gardevoir	Machine
Roselia	Machine
Latias	Machine
Latios	Machine
Rayquaza	Machine
Jirachi	Machine
Budew	Machine
Roserade	Machine
Cherubi	Machine
Cherrim	Machine
Snover	Machine
Abomasnow	Machine
Tangrowth	Machine
Leafeon	Machine
Gallade	Machine
Uxie	Machine
Mesprit	Machine
Azelf	Machine
Giratina	Machine
Cresselia	Machine
Victini	Machine
Munna	Machine
Musharna	Machine
Woobat	Machine
Swoobat	Machine
Maractus	Machine
Sigilyph	Machine
Yamask	Machine
Cofagrigus	Machine
Gothita	Machine
Gothorita	Machine
Gothitelle	Machine
Solosis	Machine
Duosion	Machine
Reuniclus	Machine
Emolga	Machine
Karrablast	Machine
Escavalier	Machine
Foongus	Machine
Amoonguss	Machine
Frillish	Machine
Jellicent	Machine
Joltik	Machine
Galvantula	Machine
Ferroseed	Machine
Ferrothorn	Machine
Elgyem	Machine
Beheeyem	Machine
Litwick	Machine
Lampent	Machine
Chandelure	Machine
Shelmet	Machine
Accelgor	Machine
Durant	Machine
Virizion	Machine
Genesect	Machine
Espurr	Machine
Meowstic	Machine
Spritzee	Machine
Aromatisse	Machine
Phantump	Machine
Trevenant	Machine
Pumpkaboo	Machine
Gourgeist	Machine
Rowlet	Machine
Dartrix	Machine
Decidueye	Machine
Primarina	Machine
Vikavolt	Machine
Cutiefly	Machine
Ribombee	Machine
Fomantis	Machine
Lurantis	Machine
Morelull	Machine
Shiinotic	Machine
Bounsweet	Machine
Steenee	Machine
Tsareena	Machine
Comfey	Machine
Oranguru	Machine
Passimian	Machine
Sandygast	Machine
Palossand	Machine
Drampa	Machine
Tapu Lele	Machine
Tapu Bulu	Machine
Xurkitree	Machine
Celesteela	Machine
Magearna	Machine
Grookey	Machine
Thwackey	Machine
Rillaboom	Machine
Dottler	Machine
Orbeetle	Machine
Gossifleur	Machine
Eldegoss	Machine
Flapple	Machine
Mr. Rime	Machine
Runerigus	Machine
Alcremie	Machine
Indeedee	Machine

Changed over time

One change since Generation IV

1. Through Gen VPower 8090 from X and Y, Generation VI