Do you pay additional costs like Accelerate's energy cost when playing a card with Promising Future (which sets the cost to 0)?

Ruling: Yes, you must pay additional costs even when Promising Future sets the base cost to 0.

Sequence:

• Promising Future sets the card's cost to 0
• Additional costs (like Accelerate's energy requirement) are added after the cost is set to 0
• You must pay those additional costs to play the card