> For the complete documentation index, see [llms.txt](https://docs.greenbtc.club/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greenbtc.club/v2-getting-started/what-s-kwh.md).

# What\`s kWh

GreenBTC.Club V2 issues a new ERC-20 token KWH by burning ART (1 ART -> 1000 KWH) in a one-way behavior. This eliminates the overhead of maintaining the bi-directional mapping of ART and AREC and thus, lowers the gas fee. KWH, standing for Kilo-Watt Hour, is used in GreenBTC.Club V2 as a light weight green asset for all greening activities.

<table><thead><tr><th width="115">Token</th><th width="479">address</th><th>price</th></tr></thead><tbody><tr><td>kWh</td><td><a href="https://polygonscan.com/token/0x5740a27990d4aaa4fb83044a6c699d435b9ba6f1">0x5740a27990d4aaa4fb83044a6c699d435b9ba6f1</a></td><td>0.01 U</td></tr></tbody></table>

## How to Swap

1. Go to <https://www.greenbtc.club/swap>

<figure><img src="/files/Nj2r1OQ20w0FaFEsy5ZN" alt="" width="563"><figcaption></figcaption></figure>

2. You can swap kWh with USDT, USDC.e or ART

<figure><img src="/files/Yox8KOwYawfueFJc9ixj" alt="" width="563"><figcaption></figcaption></figure>