Support for domgas review, page-254

Let's take a look at your Victorian example first.
$2.5 million in capital costs. Maximum production rate = 20kg per day (operating 24hrs?)

Hyundai Nexo has a 6.3kg tank. 570km max range.Toytota Mirai has a 5.65kg tank. 502km max range.
This refinery can refuel 3-4 cars per day, and deliver ~1,800km of total driving range. For a capital outlay of $2.5 million. (plus ongoings etc)

Total revenue from refuelling 3-4 equivalent cars per day is $150-250, for the same range. (as below)

The 2023 Hybrid Camry does 4.2l/100km.
The 2023 2.5l I4 Camry does 6.8l/100km.
They're also about $10,000-20,000 cheaper to purchase.

Best case scenario it will take around 10,000 days - 27 years - to recoup costs (with zero expenses).

The BOC project in Brisbane can produce a maximum of 80kg per day - at a capital cost of over $5.5 million.
(including over $1.1 million in government subsidies)