The Cheaper Home Batteries scheme is on track to notch up half a million installations in August, according to the latest tally, as the hugely successful federal government rebate continues to defy all expectations.

The promise of lower power bills has pushed millions of home owners to install a home battery in the last 12 months. But not all of them feel better off.

The Cheaper Home Batteries scheme is on track to notch up half a million installations in August, according to the latest tally, as the hugely successful federal government rebate…