Scottish runner offering to conserve energy now (3,3,7)
I believe the answer is:
for the present
'now' is the definition.
I know nothing about this answer so I can't judge whether this works.
'scottish runner offering to conserve energy' is the wordplay.
'scottish runner' becomes 'forth' (Scottish river. I am not sure about the 'scottish' bit.).
'offering' becomes 'present' (I've seen this before).
'to conserve' indicates putting letters inside.
'energy' becomes 'e' (physics symbol as in E=mco).
'forth'+'present'='forthpresent'
'forthpresent' enclosing 'e' is 'FOR THE PRESENT'.
Can you help me to learn more?
(Other definitions for for the present that I've seen before include "Temporarily" , "Extract from thank you letter" .)