Published: October 28, 2026. Prices checked live on the TronSave market at 15:32 UTC.
Short answer: on TronSave, a rental price is quoted in sun per unit of energy. For rentals shorter than one day you pay that price once. For one day or longer you pay it for every day. So 64,285 energy for 30 days at 40.75 sun costs 78.59 TRX, not 2.62 TRX.
Misreading this rule is the easiest way to get a rental budget wrong by a factor of 30. This guide shows the formula, what one USDT transfer costs at each duration, and when a long rental beats burning TRX.
What is the formula for TRON energy rental cost?
There are two cases, and the only thing that decides which one applies is the duration:
| Rental duration | What the price means | Total cost |
|---|---|---|
| Under 1 day (15 minutes to 23 hours) | Price for the whole rental | amount × price |
| 1 day or longer | Price per day | amount × price × number of days |
Prices are in sun; 1 TRX = 1,000,000 sun. A day is counted as each started 24 hours. A two-hour rental of 64,285 energy cost exactly the same as a one-hour rental (4.32 TRX), because both were under a day and carried the same price.
This is also why the per-unit numbers on a price grid can look strange. A 3-day price of 43 sun looks half as expensive as a 1-day price of 86.5 sun. It is cheaper per day, but three days at 43 sun still cost more in total than one day at 86.5.
How much does one USDT transfer cost at each duration?
A USDT (TRC-20) transfer to an address that already holds USDT uses 64,285 energy. Without energy, the network burns 100 sun per unit, or 6.43 TRX. Here is what renting that amount cost on October 28, 2026:
| Duration | Price (sun per energy) | Total for 64,285 energy | Cost per daily transfer | vs burning 6.43 TRX |
|---|---|---|---|---|
| 15 minutes | 65 | 4.18 TRX | 4.18 TRX (one transfer) | 35% less |
| 1 hour | 67.25 | 4.32 TRX | 4.32 TRX (one transfer) | 33% less |
| 3 hours | 69.75 | 4.48 TRX | 4.48 TRX (one transfer) | 30% less |
| 1 day | 86.5 per day | 5.56 TRX | 5.56 TRX | 14% less |
| 2 days | 55.25 per day | 7.10 TRX | 3.55 TRX | 45% less |
| 3 days | 43 per day | 8.29 TRX | 2.76 TRX | 57% less |
| 7 days | 42.25 per day | 19.01 TRX | 2.72 TRX | 58% less |
| 30 days | 40.75 per day | 78.59 TRX | 2.62 TRX | 59% less |
The “per daily transfer” column assumes you send one transfer every day of the rental. That works because delegated energy you use refills over 24 hours, so 64,285 energy covers one transfer a day. If you skip days, the cost per transfer rises.
Rental prices move with supply and demand. Check the TronSave market for the current price of your exact amount and duration.
Why does a 1-day rental cost more per day than a 3-day rental?
On the day these prices were read, the 1-day price (86.5 sun for 64,000 energy) was the highest number on the grid for every order size, higher even than the sub-day prices that cover a whole rental. Two practical consequences follow:
- For a few transfers within a few hours, a 3-hour rental (4.48 TRX) was cheaper than a 1-day rental (5.56 TRX).
- For sending on several days in a row, a 3-day rental (2.76 TRX per day) was half the daily cost of a 1-day rental.
Avoid durations just over a day. Days are counted per started 24 hours, and a duration between one and two days took the 1-day price. A 25-hour or 36-hour rental of 64,285 energy was quoted at 86.5 sun × 2 days = 11.12 TRX, while a full 2-day rental cost 7.10 TRX.
Duration is a separate market, not just a clock. Our guide on how long to rent TRON energy covers how to match the window to your activity.
When does a long rental actually beat burning TRX?
A multi-day rental only pays off if you use the energy on enough days. Divide the rental total by the cost of the alternative to get the number of sending days you need:
| Rental (64,285 energy) | Total | Sending days needed to beat burning (6.43 TRX each) | Sending days needed to beat a 1-hour rental each time (4.32 TRX) |
|---|---|---|---|
| 3 days | 8.29 TRX | 2 of 3 | 2 of 3 |
| 7 days | 19.01 TRX | 3 of 7 | 5 of 7 |
| 30 days | 78.59 TRX | 13 of 30 | 19 of 30 |
If you send one USDT transfer a month, a 30-day rental is the most expensive option on this page: 78.59 TRX against 4.18 TRX for a 15-minute rental. Long rentals are for steady, daily activity.
How does order size change the price?
Larger orders get a lower unit price. For 30 days on October 28, 2026 the grid showed 40.75 sun per day for 64,000 energy, 37 sun for 1,000,000 and 36 sun for 100,000,000.
The grid shows the lowest price the market could fill at that moment. A quote at the default market price can be higher, especially for large, long orders. For 1,000,000 energy over 30 days the lowest price was 37 sun per day (1,110 TRX in total), while the default quote was 41 sun per day (1,230 TRX). Bidding at the lowest price is cheaper but may take longer to fill. If an order is slow, see why a TRON energy order is not filling.
How do I calculate my own rental cost?
- Energy per transfer. 64,285 for a USDT transfer to a wallet that already holds USDT; about 130,285 for a wallet that never held it.
- Amount. Multiply by the number of transfers you send within any 24 hours. That is how much energy has to be on hand at once.
- Duration. Under a day for a one-off batch, or the number of days you will be sending.
- Price. Read it for that amount and duration on the market.
- Total. amount × price, times the number of days if the rental is a day or longer. Divide by 1,000,000 for TRX.
Worked example: a shop sends 5 USDT payouts a day, every day for a week. Amount: 5 × 64,285 = 321,425 energy. The quote for 7 days was 41 sun per day, so 321,425 × 41 × 7 = 92.25 TRX, or 13.18 TRX a day. Burning would have cost 5 × 6.43 = 32.15 TRX a day, so the rental is about 59% less.
The TronSave Energy Calculator does this arithmetic with live prices, including the per-day rule.
Does bandwidth follow the same rule?
Yes. Renting 1,000 bandwidth cost 600 sun per unit for 15 minutes (0.6 TRX), 800 for one day (0.8 TRX), 700 per day for 3 days (2.1 TRX in total) and 650 per day for 15 days (9.75 TRX in total). Burning costs 1,000 sun per unit.
FAQ
What if I rent for 25 hours?
You pay for 2 days, at the 1-day price: 11.12 TRX for 64,285 energy on October 28, 2026, more than a full 2-day rental (7.10 TRX). Round up to whole days, or stay under 24 hours.
Is the price per hour?
No. Under one day the price covers the whole rental. Two hours of 64,285 energy cost the same 4.32 TRX as one hour on October 28, 2026.
Why did my 30-day order cost 30 times the number on the grid?
Because prices for one day or longer are per day. The grid number is the daily rate; the total is that rate × amount × days.
Is a longer rental always cheaper?
Only per day. In total it always costs more, and it only beats burning or short rentals if you send on enough of those days (see the table above).
Do I get money back for days I do not use?
Unused time is generally not refunded once the energy is delegated. Unfilled orders are a different case; see how to cancel a TronSave energy order.
Can an AI agent read these prices?
Yes. The TronSave MCP server exposes the price table and an exact quote tool without a login. The quote returns the total in sun, which already applies the per-day rule.
