The Week 1300

[TioMateo]

Clue of the Week :- Replacement of fossil fuels requires years longer to develop (5,6) - originally in The Independent, Serpent. It looks as if it could be an anagram of "years longer" (indicator being "to develop") and I thought the first word could be GREEN leaving me with an anagram of YARSLO for the second word. I could only come up with ROYALS, but that doesn't make any sense. Any ideas?

[Mamyalynne]

Solar energy

[Lie-in King]

Solar energy - anag 'years longer'

[Neveracrossword]

Solar Energy

[JJ109]

Solar Energy (anagram)

[TioMateo]

Thanks everyone, and apologies for not having first checked for previous questions and answers. Have just found hopelessinit's Q & A from last Saturday.