Crossword Genius

Tool to measure energy new refrigerator initially consumes (7)

Ross

I believe the answer is:

'tool' is the definition.
(spanner is a kind of tool)

'measure energy new refrigerator initially consumes' is the wordplay.
'measure' becomes 'span' (span is a kind of measure).
'energy' becomes 'e' (physics symbol as in E=mcp).
'initially' indicates taking the first letters.
'consumes' indicates putting letters inside.
The initial letters of 'new refrigerator' is 'nr'.
'e' going inside 'nr' is 'ner'.
'span'+'ner'='SPANNER'

'to' is the link.

(Other definitions for spanner that I've seen before include "Tool, often adjustable", "Wrench for nuts", "Nut tightener", "Tool for tightening or loosening", "Nut-tightening tool".)

I've seen this clue in The Telegraph.