From Network Planning to Capital Allocation: Investing Through Uncertainty

This paper proposes a portfolio approach to large-scale, long-term capital-allocation decisions in sectors where demand is not merely uncertain, but exposed to structural change. Traditional investment planning often relies on a central demand forecast and evaluates projects individually against that baseline. This is increasingly inadequate when investment outcomes may be affected by new technologies, shifts in customer behaviour, regulatory developments, changes in urban form, and the emergence of new residential, commercial, or transport corridors.

The proposed framework evaluates competing investments as elements of a portfolio rather than as isolated projects. It considers not only expected financial returns, but also resilience across alternative scenarios, the value of preserving future options, and the ability of an investment programme to remain useful when the assumptions underpinning the original forecast no longer hold. The objective is not to predict the future with false precision, but to allocate capital in a way that performs acceptably across a range of plausible futures.

The assessment of investment value is anchored in Quality of Experience, or QoE. In telecommunications, QoE can be linked to measurable network and customer-experience indicators, such as coverage, capacity, throughput, latency, reliability, and service availability. In public transport and mass-transit applications, the same principle can be implemented using structured service-quality methodologies such as SERVQUAL, complemented by operational indicators including accessibility, journey time, frequency, reliability, and crowding.

By combining financial analysis, scenario design, and service-quality measurement, the framework provides a practical basis for prioritizing investments under uncertainty while avoiding excessive dependence on any single forecast.