By Felicity Galluzzo, Director of Power and Energy at WSP in Australia
The result is predictable: late-stage engineering tweaks can result in approvals needing to be reworked, causing fragmentation in the approvals process. When a late change in wind turbine height or location, or the number of solar panels force additional impact assessments on an overburdened approvals desk, it isn’t minor. Do that several times on a project and you create bottlenecks that can ripple across the sector.
Crucially, we don’t have the time. Despite 2030 and 2050 targets looming, on average, approvals for a solar project are stretching to over three years and over four years for onshore wind projects. The cost of getting engineering and approvals wrong upfront is not just a schedule slip, it means missed national outcomes and risking trust from the public. The solution is hiding in plain sight: embed engineering early and integrate it holistically with planning, environment and community from day one.
Too often, projects try to nail down planning first and bolt the engineering on later. This process invites cost and schedule blow‑outs as design decisions collide with conditional approvals. The fix is to bring engineering and digital specialists in from day one, treating design models, connection studies and geographical constraints as inputs to planning, not afterthoughts. Approvals should be both narrative and evidence-led; as the design matures, the data and narrative presented to regulators must be updated through a traceable information stream. This makes changes manageable, transparent and faster to approve.
Funding implications: clarity attracts capital
Every late-stage redesign, additional approval loop or surprise fix adds risk and cost. They lead to bigger contingencies, more expensive finance, and can delay investment. In contrast, clarity on the design early on can reduce this risk – and investors will notice.
Two shifts matter here. Firstly, integrated front-end thinking reduces any change risk. When engineering, environment, grid and social licence are reconciled early, you minimise the probability of any necessary rework during the design and delivery stage. Fewer revisions mean fewer surprises and tighter confidence around the cost and schedule.
Secondly, digital tools shorten the loop from question to answer. Work that once took months – including manual analysis to compare corridor options or layout sensitivities – now happens in hours. The result means smarter decision making with more options tested, clearer trade-offs, and live updates as inputs change. We’ve begun rolling out such tools with clients so they can do more with less, including self-serve site screening, constraint mapping and what‑if modelling, bringing evidence to investment committees sooner.
The discipline of front-end thinking and digital tools means deliberately investing in the areas that will determine risk. In a sector where margins are lean and pipelines are commercially sensitive, front-end engineering provides the credible narrative that investors require on the integrated solutions we are delivering.
Policy alignment: approvals that keep pace with ambition
While step-change reforms can keep pace with ambition, lurching from one rulebook to another risks freezing delivery as everyone re-learns how to operate. The right path is choosing continuous, targeted improvement.
Engineering can help make those increments count by meeting policy halfway. This includes aligning approvals with technical reality by creating single, coordinated pathways that recognise the interdependence between generation and connection assets. Design change-control protocols that will distinguish between genuine tweaks, and changes that would trigger wholesale reassessment before they hit the approval desk.
Early environmental constraints should be designed in, not tested after the fact. Bringing biodiversity, heritage and community considerations into engineering early in the process, projects avoid impacts, tighten economics and move through approvals with fewer surprises. Allowing digital submissions such as live models, data and change histories, helps agencies assess faster and with more confidence. When you couple this with policy harmonisation and technical foresight, it keeps approvals coordinated and proportionate to risk, so delivery keeps pace with ambition without constant resets.
We risk losing public support if the transition feels chaotic, opaque or endlessly changing. The answer is not doing more for the sake of it; it’s doing the right things earlier, and doing them once or twice instead of multiple times. By putting front-end engineering on the table from day one, we can help future‑proof Australia’s energy system, building the capacity, the confidence and the public licence to keep going. The transition is complex, but it doesn’t have to be chaotic. Embedding engineering early is how we move fast without breaking the system we all rely on.
