Big number in favour of helping to save energy - Crossword Clue

Below are possible answers for the crossword clue Big number in favour of helping to save energy.

13 letter answer(s) to big number in favour of helping to save energy

PROLIFERATION
  1. a rapid increase in number (especially a rapid increase in the number of deadly weapons); "the proliferation of nuclear weapons"
  2. growth by the rapid multiplication of parts

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