The stock is currently down around 68% as investors gauge the risk that Sunnova is headed for bankruptcy, a frequent outcome for companies that issue such warnings. In a bid to stave off insolvency, Sunnova said Monday it is planning to refinance debt,

Another day, another big solar installer faces bankruptcy. This time, the latest company to face the "solar coaster" is Sunnova Energy International, which is looking down the barrel at a cash flow that's insufficient to meet its obligations and fund operations.

Key Takeaways Sunnova Energy International said it may not be able to continue as a "going concern" in a year because of financial difficulties.The solar power company has been plagued by falling demand for its alternative energy products.