April’s BEST Green Crossword solution

Sadly we had no entries, so there were no prizewinners!
Some explanations added to clues below, in red.

 

 

 

 

 

 

Across
1. Zero-carbon electricity source. But is it green? (7,6)
8. Most of this modern blight is plastic (6)
9. They hold 90% of the world’s CO2 (6)
10. He may have to become The Abominable Rockman! (4)
11. Where to buy more loft insulation (1-1-1,5)
12. Entice (5)
13. More zero-carbon energy. Definitely green. Or maybe blue! (5)
15. Light energy, dissected (8)
17. Nature’s green carbon capture device (4)
19. The hydrocarbon that powers most transport (6)
20. What we share, consciously or not (6)
21. Get mechanical arrangement for a warmer planet (7,6) (anagram)

Down
2. What we must do in the face of global warming (5)
3. Vital chemical ingredient of the electric future (7)
4. It’s invisible, it’s everywhere, it’s polluted (3)
5. Eastern company method (= system) for an environment (9)
6. Fixture in the seventies (5)
7. Nothing particular (7)
11. Put off man for cleaner (9)
12. In the news, and on the spot (7)
14. A tricky problem – such as whether or not to take action to save the planet! (7)
16. The sort of bottomless hole that could accommodate all our emissions? (5)
18. Amidst (5)
20. Refrigerant banned from Chelsea Football Club at the outset (3)