From what I can see, you can fund with your bank account. or, perhaps it is your preference not to?
You can deposit to your EcoCard using one of the following methods:
Bank payment
Transfers through alternative payment methods
Edited to add: Nevermind. I’m blind as a bat tonight. I can see now, that yes, you have to fund by bank wire. Although, if you don’t mind waiting an exntra 2 – 3 days, you can still use that method.