Related Clues:
- Go greeny, which looks funny
- Green Party finally contrived to get power
- Unknown green sources needed to supply the demand for it
- Service graduate's Sierra
- Service block
- Church service - crowd
- Eucharist
- Power - drive
- Bulk - RC service
- Roman Catholic service
- Church rite
- RC service
- Religious rite
- Large number of people
- Lump of material