Siemens Energy Inc.'s $3.5 billion 401(k) plan is plagued by high fees, an underperforming stable value fund, and a misuse of forfeited contributions, a former employee alleged in a new lawsuit.

NextEraEnergy Inc. Employee Retirement Savings Plan, Juno Beach, Fla., had assets of $6.95 billion as of Dec. 31, 2021, according to the latest Form 5500.