Energy Retrieval recycles basic Energy cards from the discard pile back to hand. The Base Set wording required trading 1 other card from hand for up to 2 Energy cards, a cost that Black and White's wording dropped entirely, simply putting 2 basic Energy cards from discard into hand for free.
Energy Retrieval first appeared in Base Set in 1999 with art by Keiji Kinebuchi. Kent Kanetsuna illustrated the Black and White era reprints, and 5ban Graphics, Toyste Beach, Ryo Ueda, and Studio Bora Inc. have illustrated the XY through Mega Evolution era printings, including a Secret Rare in Ancient Origins and an Ultra Rare in Chaos Rising. It was also included in the BW trainer Kit (Zoroark) and has been printed in every era from Black and White through the Mega Evolution era.
In Japan, before the Leaders' Stadium expansion, the Expansion Pack printing could retrieve any Energy cards, not just basic ones, before receiving an erratum that was carried into the Nivi City Gym print and all international releases. It shares this trait with Super Energy Retrieval. In Japan it was reprinted with a reworded effect in the Nivi City Gym deck and later included in the Tamamushi City Gym deck, both decks of the Quick Starter Gift Set, and the Yamabuki City Gym deck.
Base Set printing is Energy Retrieval's first appearance, illustrated by Keiji Kinebuchi
Black and White printing drops the hand-card trade cost
Ancient Origins printing includes a Secret Rare treatment
Chaos Rising printing includes an Ultra Rare treatment
No, the Base Set wording required trading 1 other card from hand; Black and White removed that cost.
It could retrieve any Energy cards, not just basic ones, before an erratum restricted it, a trait it shares with Super Energy Retrieval.
Yes, in the Mega Evolution era's Chaos Rising set.
From Base Set (1999) · 3 printings
Trade 1 of the other cards in your hand for up to 2 basic Energy cards from your discard pile.
From Black & White (2011) · 8 printings
Put 2 basic Energy cards from your discard pile into your hand.
From Sword & Shield (2020) · 5 printings
Put up to 2 basic Energy cards from your discard pile into your hand.

Energy Retrieval
Item
First printed in Base Set (1999)
Put up to 2 Basic Energy cards from your discard pile into your hand.
Energy RetrievalChaos Rising · 108$1.59-3.0%45Quant score45 / 100
Energy RetrievalWhite Flare · 082 · Normal$0.16-20.0%43Quant score43 / 100
Energy RetrievalScarlet & Violet · 171 · Normal$0.25-3.8%84Quant score84 / 100
Energy RetrievalBase Set · 81 · Normal · Unlimited$0.60+1.7%38Quant score38 / 100
Energy RetrievalCrown Zenith · 127 · Normal$0.18-14.3%57Quant score57 / 100
Energy RetrievalSun & Moon · 116 · Normal$0.220.0%42Quant score42 / 100
Energy RetrievalShining Legends · 59 · Normal$0.210.0%50Quant score50 / 100
Energy RetrievalSword & Shield · 160 · Normal$0.240.0%75Quant score75 / 100
Energy RetrievalBlack & White · 92 · Normal$0.160.0%66Quant score66 / 100
Energy RetrievalBase Set 2 · 110$0.400.0%36Quant score36 / 100
Energy RetrievalEvolutions · 77 · Normal$0.22-4.3%44Quant score44 / 100
Energy RetrievalPlasma Blast · 80 · Normal$0.240.0%35Quant score35 / 100