TRON & USDT Glossary

Plain-English definitions of the TRON and USDT (TRC20) terms behind cheap transfers — Energy, Bandwidth, delegation, staking and more.

Account Activation

A TRON address only exists on-chain after it's been 'activated' by a first incoming transaction. Sending to an unactivated address can fail.

Bandwidth

TRON's second network resource. Bandwidth covers the basic byte-size of a transaction. Every account gets a small free daily allowance of it.

Burning TRX

When a wallet lacks Energy, TRON destroys ('burns') some of its TRX to pay for a transaction. It's the expensive default that renting Energy avoids.

Energy Delegation

Temporarily granting Energy from one account to another on-chain. Renting Energy works by delegating it to your wallet for a fixed period.

Energy Fee

The on-chain price of one unit of Energy in sun, set by TRON governance (the getEnergyFee parameter). It determines how much TRX is burned when you have no Energy.

Energy Rental

Paying to have Energy delegated to your wallet for a short period, instead of staking TRX or burning it. The cheapest way to cover one-off USDT transfers.

Non-custodial

A service that never holds your private keys or funds. Energy rental is non-custodial: only the resource is delegated on-chain, and you keep full control.

Receive (Delegation) Address

The wallet the rented Energy is delegated to. By default it's the address you pay from, but it can be any address you specify.

Smart Contract

Self-executing code on the blockchain. On TRON, running contract code costs Energy — and a USDT transfer is a call to the token's smart contract.

Staking (Freezing) TRX

Locking up TRX to obtain Energy or Bandwidth. Staking gives you a steady resource supply but ties up capital — unlike renting, which is pay-per-use.

Sun

The smallest unit of TRX, like a satoshi for Bitcoin. 1 TRX = 1,000,000 sun. On-chain prices and fees are often expressed in sun.

Super Representative

One of the 27 elected block-producing nodes that secure the TRON network. Staked TRX votes for them and can earn rewards.

TRC20

The token standard for fungible tokens on the TRON blockchain — the TRON equivalent of Ethereum's ERC-20. USDT on TRON is a TRC20 token.

TRON Energy

One of TRON's two network resources. Energy powers smart-contract execution — which is what a USDT (TRC20) transfer is. Without it, the network burns your TRX to pay for the transaction.

TRON Resource Model

TRON's design of paying for transactions with two resources — Energy and Bandwidth — instead of a single gas fee like Ethereum.

TRON Virtual Machine (TVM)

The runtime that executes smart contracts on TRON, comparable to the EVM on Ethereum. Its work is metered in Energy.

TronGrid

TRON's public API gateway, used to read chain data and broadcast transactions. Services (including watchers and wallets) query it to track payments.

Tronscan

The main block explorer for TRON. Use it to look up transactions, addresses, resources, and the exact fees a transfer paid.

TRX

TRON's native cryptocurrency. TRX pays for network resources — either burned directly as a fee, or staked to obtain Energy and Bandwidth.

USDT (TRC20)

Tether's US-dollar stablecoin issued on the TRON network as a TRC20 token. It's popular for cheap, fast transfers, but each send consumes TRON Energy.