Another is the use of "national strategic gas reserves to stabilise the market".
"There is a real risk of further curtailments and closures in our sector, to the detriment of Europe's strategic autonomy goals," said the letter, adding other energy intensive sectors will be put off from investing in decarboniation.
In the medium term, Eurometaux suggests the EU encourages schemes supporting corporate power purchase agreements (PPAs) for carbon free electricity.
"It's hard to make investments in many European member states because you can't get long-term contracts. The state can play a role in renewable PPAs," said Cillian O'Donoghue, Director, Energy & Climate Change at Eurometaux.