If your wallet or a block explorer is showing FAILED with the reason
OUT_OF_ENERGY, nothing has been lost. The transaction was rejected before it
changed any balance. Your USDT is where it was. What failed is a resource check,
and it takes a couple of minutes to fix.
What the error actually means
Every TRON account has two resources: Bandwidth, spent on the size of a transaction, and Energy, spent on the computation a smart contract performs. A plain TRX transfer between two ordinary addresses uses only Bandwidth. A USDT transfer does not — USDT on TRON is a TRC-20 smart contract, and calling it costs Energy.
TRON gives every account a small free Bandwidth allowance that refills daily. It
gives no free Energy at all. You get Energy in exactly three ways: stake TRX for it,
have someone delegate it to you, or let the network burn your TRX to cover it. When none of
those covers the contract's cost, execution stops part-way and the network reverts everything
with OUT_OF_ENERGY.
One detail worth knowing, because it is the part people find unfair: the Bandwidth and any TRX consumed up to the point of failure are not refunded. A failed transfer is cheap, but it is not free — which is why guessing twice costs more than getting it right once.
How much Energy a USDT transfer really needs
The number depends on one thing only: whether the address you are sending to already holds any USDT.
| Situation | Energy needed | Cost if you burn TRX |
|---|---|---|
| Receiver already holds USDT | ~65,000 | ~6.5 TRX |
| Receiver holds no USDT yet | ~130,000 | ~13 TRX |
Writing a brand-new balance into the USDT contract costs roughly twice as much as updating one that already exists — that is the whole reason for the gap. The TRX figures follow from the Energy unit price of 100 SUN that TRON adopted in August 2025 under governance proposal #104, which halved the previous 210 SUN: multiply the Energy by 100 SUN, divide by 1,000,000, and you have the TRX the network burns.
If you cannot tell which row applies, take the larger one. Renting more Energy than you use wastes a fraction of a TRX; renting too little means the transfer fails again and you pay for the failure twice.
The three ways to fix it
1. Let the network burn your TRX
Keep enough TRX in the wallet and raise the fee limit, and the transfer goes through with no further setup. It is the simplest option and the most expensive one: about 6.5 TRX per ordinary transfer, every single time. Reasonable for one transfer you will never repeat.
2. Stake TRX for your own Energy
Freezing TRX under Stake 2.0 generates Energy that regenerates daily, so a regular sender pays nothing per transfer. The catch is capital: covering a USDT transfer a day takes a four-figure TRX stake, locked up and exposed to the TRX price. It pays off for high, steady volume and not much else.
3. Rent Energy for an hour
Rental platforms hold large staked pools and delegate Energy to your address on demand, usually within seconds, for terms from 15 minutes upward. You pay only for what you rent, nothing is locked, and no one gains any authority over your wallet — a resource delegation cannot move your funds. For anyone sending USDT more than occasionally, this is the cheapest of the three.
Right now the cheapest 65,000-Energy hourly rental on this board is — TRX, from the cheapest platform on the board, against about 6.5 TRX to burn the same Energy. The market average is — TRX and the dearest platform tracked asks — TRX — which is exactly why it is worth checking a board instead of taking the first result. See all 19 platforms and today's prices →
Fixing it, step by step
- Check which address is actually sending. It must be the address that holds the USDT you are moving.
- Decide whether you need ~65,000 or ~130,000 Energy, using the table above.
- Rent that Energy to the sending address, or stake, or top the wallet up with TRX and raise the fee limit.
- Confirm the Energy arrived. Wallets show it as an Energy balance on the account; block explorers list it under the account's resources.
- Re-send the transfer, and do it before the rental expires — most cheap rentals run for 15 minutes or 1 hour.
Four mistakes that cause a second failure
Paying from an exchange withdrawal. This is the most common one by a wide margin. If you buy Energy and pay by withdrawing TRX straight from an exchange, many platforms delegate the Energy to the address the payment came from — which is the exchange's hot wallet, not yours. Pay from the wallet you actually control, or use a platform that lets you name the receiving address explicitly.
Forgetting the memo. Several platforms take payment to one shared address and use the transaction memo to tell whose address the Energy is for. No memo, and the Energy goes to the payer.
Renting for the recipient instead of the sender. Energy is consumed by the account that signs the transaction. Delegating it to the person receiving the USDT does nothing.
Letting the rental expire. A one-hour rental runs for one hour from delegation, not from when you get round to sending.
Frequently asked
It means your transaction was broadcast and accepted by the network, but your account did not have enough Energy to run the smart contract it called, and did not have enough TRX for the network to burn as a substitute. The transaction is reverted, nothing moves, and the bandwidth and any TRX already consumed are not returned. It is a resource error, not a balance error — your USDT is untouched.
About 65,000 Energy when the receiving address already holds USDT, and about 130,000 Energy when it does not. Writing a brand-new balance entry into the USDT contract costs roughly twice as much as updating one that already exists. If you are unsure which case applies, rent the larger amount — unused Energy simply goes unused, while too little means the transfer fails again.
Burning TRX only covers Energy up to the fee limit set by your wallet. If the fee limit is lower than the cost of the Energy the contract needs, the transaction runs out mid-execution and reverts with OUT_OF_ENERGY. Raising the fee limit in the wallet's advanced settings fixes that case; it does not help if the TRX balance itself is too low.
Renting, in every ordinary case. Since TRON proposal #104 set the Energy unit price at 100 SUN in August 2025, burning your way through a 65,000-Energy transfer costs about 6.5 TRX. Renting the same Energy for one hour costs a fraction of that on the platforms this board tracks. Burning only makes sense for a single transfer you will never repeat.
No. Energy is delegated to your address by an on-chain resource delegation. The delegating party can take the Energy back when the rental expires, but delegation carries no authority over the account — it cannot move, sign for, or freeze your USDT or TRX.
The three usual causes: the Energy was delegated to a different address than the one sending the transfer (very common when you pay from an exchange withdrawal — the Energy lands on the exchange's hot wallet, not yours); the rental had already expired, because the shortest terms on most platforms are 15 minutes or 1 hour; or you rented 65,000 Energy for a transfer to an address holding no USDT, which needs about 130,000.
Where to go next
The board tracks live 65k and 130k prices across 19 rental platforms and rescans every 15 minutes, so the cheapest option changes through the day.
- Live price board — every platform, sorted by current price
- Feature comparison — which platforms accept a memo, offer an API, or run a Telegram bot
- 65k vs 130k vs 200k — how to pick the amount
- How SUN rates work — why platforms disagree on price
- Burning TRX vs renting — the arithmetic