Once you complete the initial setup of a Trezor wallet, you can connect to the Energy Web Chain or the Volta Test Network via MetaMask or a local node.
You first need to connect your MetaMask to the Energy Web main network, or the Volta Testnet. You can see guidance on how to do this here.
Once you are signed into MetaMask, and have connected to the main network or Volta Test Network, click on the circular dropdown and select "Connect to Hardware Wallet". Follow the steps to give MetaMask permissions to connect to Trezor, export the public key and unlock an account.
Run a local node of the Energy Web Chain. You can see guidance on how to run a local node here.
Connect your MetaMask to your local node. You can see guidance on how to do this here.
Follow the directions above on how to connect your Trezor hardware wallet to MetaMask.