SUN and TRX
Energy prices on TRON are quoted in SUN, the smallest unit of the TRX currency. Understanding SUN is essential for reading prices and comparing providers accurately.
The Basics
1 TRX = 1,000,000 SUN
SUN is to TRX what cents are to dollars — except there are a million of them in each TRX. Prices are quoted in SUN because Energy costs are tiny fractions of a TRX per unit, and whole numbers are easier to compare.
When you see a price like 30 SUN per Energy, that means each unit of Energy costs 0.000030 TRX.
How Energy Pricing Works
Energy pricing follows a simple formula:
Total Cost (SUN) = Energy Amount x Price per Unit (SUN)
Total Cost (TRX) = Total Cost (SUN) / 1,000,000
Worked Example: Standard USDT Transfer
A typical USDT transfer requires 65,000 Energy. If a provider charges 30 SUN per unit:
| Step | Calculation | Result |
|---|---|---|
| Energy needed | — | 65,000 units |
| Price per unit | — | 30 SUN |
| Total in SUN | 65,000 x 30 | 1,950,000 SUN |
| Total in TRX | 1,950,000 / 1,000,000 | 1.95 TRX |
Comparing Two Providers
Say Provider A charges 28 SUN and Provider B charges 35 SUN for the same 65,000 Energy:
| Provider A (28 SUN) | Provider B (35 SUN) | |
|---|---|---|
| Total SUN | 1,820,000 | 2,275,000 |
| Total TRX | 1.82 TRX | 2.275 TRX |
| Difference | — | +0.455 TRX per transfer |
That 7 SUN difference per unit translates to 0.455 TRX per transfer. Over 100 transfers, that is 45.5 TRX saved by choosing the cheaper provider.
TronAgg compares prices across all providers so you can spot these differences instantly, without doing the math yourself.
Quick Reference Table
| SUN Amount | TRX Equivalent |
|---|---|
| 1 SUN | 0.000001 TRX |
| 100 SUN | 0.0001 TRX |
| 1,000 SUN | 0.001 TRX |
| 1,000,000 SUN | 1 TRX |
| 10,000,000 SUN | 10 TRX |
Why SUN Instead of TRX?
Quoting prices in SUN avoids awkward decimal numbers. Comparing 28 vs 35 is much easier than comparing 0.000028 vs 0.000035. Every provider and tool in the TRON ecosystem uses SUN for energy pricing, so TronAgg follows the same convention.