Electra Protocol is a proof-of-stake blockchain and it relies on staking in order to remain online. Cold staking is an extension of “normal” staking and is planned to be implemented for Electra Protocol, according to the roadmap.
You can stake several cryptocurrencies, including Electra Protocol, using the XEP Desktop Wallet. Cold staking involves using an offline cryptocurrency wallet. In most cases, you’ll use a hardware wallet for this; your coins will be stored in a blockchain when you use these, but you’ll need to verify transactions offline.
Your rewards will differ depending on your individual situation. If you remove your funds before the staking period ends, you won’t earn any of these.