The most common and most likely answer to this crossword clue is the 6 plus 7 letter word CARBON CAPTURE
I've seen this crossword clue in Financial Times
C
A
R
B
O
N
C
A
P
T
U
R
E
More clues leading to the result CARBON CAPTURE
Buddy explains!
The straight part
We know that "this new technology! It’ll make you go green" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case this new technology! it’ll make you go green = carbon capture.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.