Powys council leader Rosemarie Harris has urged Mark Drakeford to carry out a "fundamental review" of funding.
The fire spread along a hillside overlooking Llanddewi Brefi on Friday afternoon.
Almost all councils are unable to collect and compost the alternative to single-use plastics.
Swansea City reached the FA Cup quarter-finals for only the fifth time in their history after they fought back to beat 10-man Brentford.
Stuart Bingham faces Neil Robertson in the Welsh Open final in Cardiff.
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