15/07/2026
Article Referenced: Fidelity unveils Zimbabwe's first large-scale residential piped gas project
Trying to mimic a Natural gas utility using localized LPG reticulation is an incredibly risky and expensive endeavor.
The news about Zimbabwe’s first large-scale residential piped gas project in Southview is exciting on the surface. The idea of never running out of gas or having to carry heavy cylinders to the filling station sounds progressive.
However, as a Gas Tech who has previously run a detailed feasibility study on this exact concept for a housing complex, I have to raise some petinent questions. While it is technically possible, a piped LPG (liquefied petroleum gas) system is incredibly difficult to justify from an economic, safety and financial standpoint.
Here is a simple breakdown of why piping LPG into homes is much harder—and riskier—than it sounds.
1. The Science: Why LPG and Natural Gas are Not the Same
Around the world, when you see gas being piped directly into millions of homes, it is almost always Natural Gas. LPG, on the other hand, is almost always bottled. This isn’t a random choice; it is because of basic chemistry.
Natural Gas (Methane) is lighter than air, when exposed to the atmosphere it tends to rise.If a pipe leaks underground, the gas rises up, escapes into the atmosphere, and blows away. Leaks are easily detectable above ground.
LPG (Liquid petroleum gas) is a mixture of Propane and Butane ,heavier than air, and tends to sink at normal atmospheric conditions.If an LPG pipe leaks, the gas sinks. It collects in low-lying areas, crevices, drains, and ditches. This makes leaks underground incredibly hard to detect and highly dangerous in piped underground systems.
The Pressure Problem
Because LPG is a heavier gas it can be turned into a liquid at a moderate pressure and low tempreture thus LPG can be bottled and transported with relative ease.
In utility LPG systems with long pipelines at high pressure the vapour can turn back into a liquid if it gets too cold or compressed. This can create blockages. It has to be pushed through pipes at low pressure to prevent condensation.
In a large neighborhood with thousands of homes, sending gas at low pressure through long pipes is risky. During cold winter evenings or frosty mornings when everyone turns on their stoves/heaters at the same time, the pressure at the end of the line will drop. If the pressure gets too low, burner flames can go out on appliances without flame failure devices this risk is amplified.
2. The Economics: Why Bottling LPG is Simple cost effective choice.
We pipe natural gas because it is cheap to move in bulk, and we bottle LPG because it is easy to shrink into a liquid.
Natural Gas is piped because it is incredibly hard to compress and store in cylinders we don't have to freeze or compress it into a liquid to move it. It just flows like air.It is a "true" gas and can be piped at high pressure without the risk of condensing and risk of pressure differentials in long pipelines.
LPG is compressed into a liquid at room temperature with relative ease so we can pack a massive amount of energy into a small, portable metal bottle. It is highly efficient to transport this way.
When you try to pipe LPG, you lose these economic benefits. To run a piped LPG utility over a large area the developer has to also consider
Miles of specialized underground pipes with relavant control/safety stations and infastructure.
Auxillary Gases and storage i.e Nitrogen for purging and maintanance.
Smart meter installations and routine caliberation. Poorly calibrated meters can sink entire opration
Permanent well trained and qualified technical staff for regular safety inspections, 24/7 standby response teams pipeline maintenance equipment.
Admin, warehousing,billing, management general staff etc...
adding up all of these infrastructure and running costs, It is highly unlikely that a LPG utility in Zimbabwe can charge a price that is cheaper or even competitive with the standard gas bottles already in use.
Conclusion
The Southview piped gas project is a bold and noble attempt at modernization, but it goes against the natural strengths of LPG.
It is my learned opinion that for the average homeowner, the traditional gas cylinder will remain the safer, simpler, and more budget-friendly option.