Gaming How-To

How to Unlock Acid Rain in the Power Plant (Storage Hunters: Open World)

The exact quest requirement that triggers the Acid Rain weather event, plus the Gavel Luck setup that turns Power Plant lockers into fast money.

The exact quest requirement that triggers the Acid Rain weather event, plus the Gavel Luck setup that turns Power Plant lockers into fast money.

The Power Plant is the highest-value farming zone in Storage Hunters: Open World, and it comes with its own weather event, Acid Rain, that you switch on by finishing a specific quest chain. Once that weather is live and your Gavel Luck is stacked correctly, this is the fastest place in the game to bank millions.

Quick answer: Complete the fifth Power Plant quest, which asks for two nuclear reactors and a Uranium Depositer, to activate the Acid Rain weather event.

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Power Plant garage entry requirements

Before any Acid Rain farming, you need to get into the Power Plant auctions. The zone has two garages, and each one gates on both a cash entry fee and a net worth threshold.

GarageEntry feeNet worth needed
Power Plant Tier 1 Garage$10.00$7,500
Power Plant Tier 2 Garage$20.00$65,000

Tier 1 opens the door early, but the Tier 2 lockers carry the higher-value pool. Push your net worth past $65,000 before you settle in for serious farming.

Image credit: Roblox

How to trigger the Acid Rain weather event

Acid Rain does not appear on its own. It is unlocked by clearing the Power Plant quest line, and the final quest is the one that flips the weather on.

Enter the Power Plant garage you qualify for and start winning lockers to collect the zone’s items and build progress toward its quests.
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Gather the two nuclear reactors and a Uranium Depositer. These three items are the hand-in for the fifth Power Plant quest.
Turn in the fifth quest. Completing it activates the Acid Rain weather event across the Power Plant, and you can confirm it by the active weather machine running inside the reactor building.

The nuclear reactor sits inside the reactor structure alongside the weather machine, so the Power Plant is both where you complete the quest and where the event plays out.

Image credit: Roblox

Power Plant collection items and their values

Two items stand out in the Power Plant collection book. The Uranium Depositer is part of the quest requirement, and the Weather Machine Orb is the top prize of the set.

ItemRarityValue
Weather Machine OrbMythical$110,000
Uranium DepositerLegendary$9,000

Hold onto the Uranium Depositer until the fifth quest is done, since you need it for the hand-in. The Weather Machine Orb is a straight payday at $110,000 if you pull one.

Image credit: Roblox

Gavel Luck setup for maximum profit

To pull the most valuable mutations out of Power Plant lockers, tune your Gavel Luck toward the high-multiplier modifiers. Weighting Corrupted, Chrome, Gem, Void, Diamond, Silver, and Gold gives you the best shot at the items that carry a run.

MutationGavel Luck
Corrupted+214%
Chrome+205%
Gem+189%
Void+170%
Diamond+151%
Silver+122%
Gold+108%
Cobwebbed+42%
Antique+33%

Tip: Void and Chrome sit at the very top of the mutation value scale, so even a small chance of landing one is worth prioritizing. Corrupted carries the highest luck weighting in this setup, which is why it anchors the build.

Image credit: Roblox / Vault_tec10

Why the Power Plant is the best money zone

The Power Plant combines a high-value locker pool with a weather event you control and a Gavel Luck build tuned for rare mutations. That mix is what makes it the most efficient spot in the game for farming millions of dollars at pace.

Winning containers here can run well into the thousands per locker, so keep enough cash on hand to bid on the Power Plant units when they come up, and sell your mutated finds back through your shop to keep the loop moving. With Acid Rain active and your luck stacked, every auction cycle becomes a chance at the top of the value table.