On Wednesday (February 7) the firms said the sector faces ongoing challenges, including project delays, equipment issues and inflation.
Siemens Energy is the world's largest maker of offshore wind turbines.
It expects a 2024 loss before special items of around $2.2 billion at its troubled wind division Siemens Gamesa.
Quality problems at some onshore models have caused a major crisis.
Rising prices for components and regulatory delays led to writedowns and losses across the industry.
That's despite robust demand for renewable technology.
The chief executive of Denmark's Vestas says the challenges will continue.
CEO Henrik Andersen said geopolitical volatility and slow permitting would cause uncertainty this year.
Vestas is the world's largest maker of wind turbines.
Another energy giant Orsted is the world's biggest offshore wind project developer.
It announced a portfolio review as well as job cuts following major writedowns on delayed projects in the U.S.
The Danish group said it would aim to slash fixed costs by $144 million by 2026.
It would include up to 800 job cuts globally.
