the main thing it will do is lower peak time demand which is when electricity prices peak the most, so it should lower electricity prices

those on the bottom rung also get:

theguardian.com/…/labor-cheaper-household-batteri…

Labor has made some steps to address these shortfalls, but could go further. It initially committed $300m to upgrade social housing with better insulation, electric appliances and solar, and last year lifted it to $800m in a deal with the Greens. It is expected to be enough to improve a quarter of Australia’s social housing stock.