Two very different job numbers are circulating about Tasmania’s proposed data centres and both can be true at the same time. This explainer sets out what each measures, so residents, councillors and journalists can compare like with like. DII takes no position on any individual project.
Why this matters
Job numbers are the most quoted and least comparable figures in Tasmania’s data centre debate. Different claims measure different things: construction versus ongoing roles, headcounts versus modelled estimates. Comparing like with like changes the quality of the whole conversation.
Construction jobs vs ongoing jobs. Large data centres are construction-heavy and operations-light. A build phase can employ hundreds of trades and engineering workers for one to three years. Once operating, a facility runs with a small permanent team of technicians, electricians, security and facilities staff. Public debate often quotes one figure without saying which phase it refers to.
The “FTE per megawatt” benchmark. Ongoing data centre employment is commonly estimated relative to IT load. Firmus has cited roughly 0.5 full-time roles per megawatt — about 52 ongoing roles at St Leonards and about 144 at Bell Bay if built to ~288MW. Published international benchmarks for large automated campuses sit at roughly 0.15–0.35 FTE per megawatt, with the most automated hyperscale sites running 20–30 permanent staff per 100MW (Hamm Institute, 2025) and industry figures of 25–40 operators per 100MW reported elsewhere. Firmus’s cited ratio is at or slightly above the top of that range. Smaller enterprise or edge facilities typically employ more people per megawatt; very large automated campuses employ fewer.
Indirect and induced jobs. Proponent figures sometimes include supply-chain and spending effects (catering, maintenance contracts, local services). These are real but estimated by economic modelling, not headcounts and depend heavily on assumptions. Any figure described as “supporting X jobs” should be read as a modelled estimate.
What a fair comparison looks like. When assessing a proposal, the useful questions are: how many ongoing FTE roles on site, over what ramp-up period; how many construction FTE-years; what share of each can realistically be filled locally given current skills; and what training commitments, if any, are attached. These are factual questions councils can put to any proponent.
The trade-off being debated. Critics note that per unit of electricity consumed, data centres employ fewer ongoing workers than most industrial users. Proponents respond that value should also be measured in investment, rates revenue and digital capability. Both framings are legitimate — they are answers to different questions.
The Digital Infrastructure Institute is an independent research and education organisation. It takes no position for or against individual projects and accepts no proponent funding.
Sources: Pulse Tasmania — Firmus defends jobs and energy use; Pulse Tasmania — Launceston approval; Hamm Institute — Data Center Employment Forecast Analysis (Nov 2025); Latitude Media — data centre staffing benchmarks