# Tron Resources

In [Blockchain Cuties Universe](https://blockchaincuties.com/) when playing on Tron Blockchain there are a few things one should know to effectively utilize it.

First and foremost, everyone needs to know what energy is and who it [works](https://tronscanorg.zendesk.com/hc/en-us/articles/360041445612-How-to-Obtain-Bandwidth-and-Energy)

Information on what are the resources on Tron Blockchain can be found [here](https://tronscanorg.zendesk.com/hc/en-us/articles/360041445672-What-are-Bandwidth-and-Energy), and all you need about freezing energy can be found in this [article](https://tronscanorg.zendesk.com/hc/en-us/articles/360041445612-How-to-Obtain-Bandwidth-and-Energy)

The BCU Smart Contract normally covers a part of the transaction fee. If there is enough surplus energy left on the Contract, it can cover up to 100% of your fee by BCU. \
You can see the state of remaining surplus energy on the Contract [here](https://tronscan.org/#/address/TNjC8mDD771pv4ncwT2kPEG2ERuX3LwAvR/freeze). (Under "For Other Users" Subtab)

\
For reference, this is a table made on the current approximate maximal resource consumption of each different blockchain interaction that is possible within the game.

<table><thead><tr><th>Tx Type</th><th width="150">Bandwidth</th><th width="150">Approx. Avg. Energy Cost</th><th width="150">Avg. Fee</th><th width="150">Energy Limit</th><th>Fee Limit</th></tr></thead><tbody><tr><td>Pet Gift</td><td>345 BW</td><td>29,500</td><td>4.15 TRX</td><td>75,000</td><td>10.5 TRX</td></tr><tr><td>Daily Lottery</td><td>279 BW</td><td>1,288</td><td>0.18 TRX</td><td>25,000</td><td>3.5 TRX</td></tr><tr><td>Elixir Usage</td><td>539 BW</td><td>41,914</td><td>5.87 TRX</td><td>100,000</td><td>14 TRX</td></tr><tr><td>Item Purchase</td><td>544 BW</td><td>41,806</td><td>5.85 TRX</td><td>100,000</td><td>14 TRX</td></tr><tr><td>Breeding</td><td>544 BW</td><td>206,000</td><td>28.84 TRX</td><td>300,000</td><td>42 TRX</td></tr><tr><td>Cutie sale listing</td><td>350 BW</td><td>108,603</td><td>15.2 TRX</td><td>180,000</td><td>25.2 TRX</td></tr><tr><td>Cutie sire listing</td><td>411 BW</td><td>109,985</td><td>15.4 TRX</td><td>150,000</td><td>21 TRX</td></tr><tr><td>Canceling Sale\Sire listing</td><td>313 BW</td><td>52,538</td><td>7.36 TRX</td><td>100,000</td><td>14 TRX</td></tr><tr><td>Cutie purchase</td><td>319 BW</td><td>90,000</td><td>12.6 TRX</td><td>120,000</td><td>16.8 TRX</td></tr><tr><td>Cutie Sire</td><td>350 BW</td><td>275,000</td><td>38.5 TRX</td><td>350,000</td><td>49 TRX</td></tr><tr><td>Fungible Token Send (Island)</td><td></td><td></td><td></td><td>25,000</td><td>3.5 TRX</td></tr><tr><td>Off-chain Deposit Wallet</td><td></td><td></td><td></td><td>25,000</td><td>3.5 TRX</td></tr><tr><td>Unique Cutie Purchase (Dev Sale)</td><td></td><td></td><td></td><td>500,000</td><td>70 TRX</td></tr></tbody></table>

*Courtesy of Capronicus and Tehnfy.*

Note: if a cutie that was not yet upgraded to erc721 participates in the transaction, the approximate energy cost and energy limit is increased by 150,000 energy for each cutie to be upgraded (up to extra 300,000 energy in case of breeding). Also note, that unlike other methods, "Pet Gift" does not automatically upgrade the cutie, so you need to make sure that cutie is erc721 compliant before gifting it - by, for example, feeding it an Elixir of Life or Potion of Fertility.

**Avg. Fee** is calculated via the simple formula: (Energy cost value)\*([Price of Energy)](https://tronscan.org/#/proposal/51)

**Fee Limit** is calculated via the simple formula: (Energy Limit)\*([Price of Energy](https://tronscan.org/#/proposal/51)). It is the maximum amount of energy that can be consumed by the transaction. Usually, the amount of energy that is used for a transaction is shown in **Approx. Avg. Energy Cost** column.


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