If you have looked into energy rental, you have seen two numbers: 65,000 and 131,000. Both are for a single USDT transfer. The difference is simple, but because of it people regularly rent the wrong amount and overpay.
~65,000 energy is what a transfer costs to an address that already holds USDT (more precisely, has held it: the contract keeps a non-zero record for it).
~131,000 energy is a transfer to a “clean” address that has never held USDT: the contract creates a new record, which costs twice as much.
You do not always know in advance which case is yours, so an honest service has to cover both. In Tronergy every issue is sized for a full transfer — up to 131,000, enough in either case.
| Scenario | Transfer cost |
|---|---|
| No energy (the network burns TRX) | ~13 TRX (up to ~27 to a “clean” address) |
| Time-based rental (hour/day) | 2.7–6.5 TRX, expires on a timer |
| Tronergy — per transaction | 0.1 TRX + slot |
There is one more resource — bandwidth: the transfer itself uses ~345 bytes. Every wallet has a free daily limit; once it is used up, the network charges an extra ~0.36 TRX. That is a network fee and applies whichever way you get energy.
You do not need to calculate energy by hand — what matters is that it covers your case and that unused energy does not go to waste. In Tronergy energy is taken for a specific transaction: 0.1 TRX for energy from third-party wallets, plus the slot price for getting it through the app, plus the network bandwidth fee if the daily limit is used up. Slots never expire, and the energy you get stays valid for 10 minutes — just enough to send the transfer.
⚡ Get energy in Tronergy