Can EACs be purchased after electricity has been used, or do they need to be bought in advance?

You can buy EACs either before or after your electricity use, depending on your priorities.

Buying earlier allows you to lock in prices, which can help with budgeting and protect against market changes. Buying later gives you the advantage of purchasing the exact amount needed to match your actual electricity consumption.

Both options are valid under the GHG Protocol, and the platform you have access to supports both approaches, so you can choose what fits best with your strategy.