New analysis reveals how many houses across the NSW Central West and Orana regions are using solar power, and how much more money they could save with a home battery.

It comes after federal government rebates are expected to cut one-third off the cost of a home battery, while coinciding with expected annual electricity default price increases of more than $200 across the region.

Australian battery provider Empower Energy conducted the analysis and looked at household electricity consumption, solar size, generation and exports, and tariff selection to determine how homes can reduce energy costs.

It shows that new wholesale electricity retail tariffs can help some homes make bigger savings, compared to standard default electricity rates.

The analysis of the Dubbo Regional Council region reveals that there are 12,444 standalone or semi-detached dwellings with rooftop solar, covering 63 per cent of all free-standing houses in the local government area.

Next door in the Narromine Shire, 60 per cent of all free-standing houses have rooftop solar with the number of dwellings using rooftop solar sitting at just under 2000 (1988).

In the Gilgandra local government area, just over 1000 dwellings have rooftop solar, covering 56 per cent of all free-standing or semi-detached houses in the region.

Empower Energy chief-executive Ezra Beeman said government rebates coupled with smart battery technology and new retail plans were making now the best time to invest in a home battery.

"Almost 50,000 houses across the region have already installed rooftop solar to reduce their bills, but only a small fraction has installed a home battery," he explained.

The average saving for households in the Dubbo Local Government Area if they installed a battery would be $1973, while those living in Narromine would save up to $2051.

Households in Gilgandra would see the biggest savings if they were to install a home battery, rounding out to $2066.