Fast Charge
Buy Energy for many addresses in one flow — estimate cost, create orders, track matching, then confirm to reclaim unused Energy and refund the difference.
Fast Charge lets you rent Energy for multiple addresses quickly and efficiently in a single flow, maximizing cost savings. You estimate the TRX you'll need, create the orders, track their matching status, and then confirm completed orders to reclaim unused Energy and receive a TRX refund.
Fast Charge is an API-key feature — every call is authenticated against a prefunded TronSave internal account. See Authentication for how to obtain a key and fund your account.
Lifecycle
The Fast Charge API follows a predictable lifecycle. Each step maps to one endpoint:
1. Estimate
Get an Estimate TRX
Given your maximum acceptable price and the number of orders, estimate the TRX required. Check it against your internal account balance.
2. Create
Create Fast Charge Orders
Submit the order with a max price, rental duration, and the list of addresses to receive Energy.
3. Track
Tracking Fast Charge Order
Monitor each order's status — Pending (waiting to match) or Matched.
4. Confirm
After using the Energy, confirm orders to end the rental, reclaim unused Energy, and trigger the TRX refund.
Step 1 — Estimate TRX payout
Provide the rent details and let the system estimate the TRX you'll need:
Maximum acceptable price.
Number of orders to place.
The system returns the estimated TRX amount. Check your internal account balance to ensure it holds enough TRX for the rent before creating orders.
Step 2 — Create Fast Charge orders
Submit an order with:
Maximum acceptable price.
Rental duration.
List of addresses to receive the corresponding amount of Energy.
Step 3 — Track order status
Use the tracking endpoint to monitor each order:
Matched — the order has been matched.
Pending — the order is waiting to be matched.
Step 4 — Confirm the order
After using the Energy, confirm the orders you want to complete by submitting the list for confirmation:
Confirmation marks the end of the rental.
The system reclaims unused Energy and calculates the TRX refund to return to your account.
Confirming early helps you receive the maximum possible refund. If you never confirm, the system automatically reclaims the order after the rental period ends.
Cancel matched orders
To cancel an order, use the cancel endpoint:
Only orders with Pending status can be canceled.
Once canceled, 100% of the TRX is refunded to your internal account.
Check transaction history
Use the history endpoint to check the details of your completed rents and orders.
Next steps
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