Almost 100 whistleblower tip-offs claim dodgy operators are rorting a multi-billion-dollar taxpayer-funded solar battery program by mocking up installs, forging signatures and using unlicensed tradies for cash jobs.

Allegations of fraud and misconduct have been revealed in tip-offs sent to the federal watchdog overseeing the Cheaper Home Batteries Program.

The untested claims were obtained by the ABC through a Freedom of Information request.

Shadow Minister for Energy Dan Tehan is calling for an independent Senate inquiry into the revelations.