Possible, but most likely leftover from Mad King days.

@movie_nazi said:

When Drogon was blasting the city you can clearly see green explosions very much similar to the Wildfire. Did Cersei purposely stash these to help the city burn when attacked?

Wildfire left over from what the mad king had stashed all over the city.

@CalabrianQueen said:

@movie_nazi said:

When Drogon was blasting the city you can clearly see green explosions very much similar to the Wildfire. Did Cersei purposely stash these to help the city burn when attacked?

Wildfire left over from what the mad king had stashed all over the city.

I thought for a second Cersei had soldiers ignite wild fire to destroy the city while Daenerys's troups were in the middle of it. But alas I gave the writers too much credit. 😒