Jordan Desalination Project Integrates 281 MW Solar Plant

Industrial load profile and grid integration

Large-scale seawater desalination combined with long-distance conveyance creates demanding operating conditions for high-voltage substations and power transformers. Jordan’s scheme to supply 300 million cubic metres of potable water each year involves pumping water across a 438 km corridor from Aqaba to Amman. The project carries an estimated cost of 6 billion dollars and requires significant continuous power to operate reverse osmosis membranes and high-pressure pumps.

To offset utility network reliance and lower operational expenses, a dedicated 281 MW solar photovoltaic plant will generate approximately 27 percent of the facility’s electricity requirements. The remaining supply must be drawn from the national grid. For substation engineers and industrial plant managers, this hybrid configuration introduces distinct operational challenges. Combining variable renewable generation with massive, constant-duty motor loads requires robust voltage regulation, harmonic mitigation, and dynamic reactive power control at collector and step-up substations.

Substation impacts along high-head pumping corridors

Pumping water across long distances and steep elevation shifts involves multi-megawatt drive motors that present extreme inductive loads. Sudden motor starts, switching transients, and variable frequency drive harmonics can accelerate thermal and electrical stress on transformer windings and tap changers. When paired with behind-the-meter solar assets, reverse power flows during peak solar irradiance must be managed without exceeding thermal limits or breaching local grid code tolerances.

Substation transformer specification for such heavy infrastructure projects must prioritize high mechanical withstand strength against short-circuit forces and enhanced cooling design. Asset managers must also ensure continuous oil condition monitoring to track thermal hot spots and electrical discharge risks in step-up transformers operating in harsh, high-temperature environments.

What this means for asset owners in the Middle East: Substation engineers and industrial asset managers in Jordan and neighbouring networks face specific transformer aging and voltage stability risks when coupling high-capacity pumping loads with variable solar generation. Rapid load fluctuations from high-pressure water pumps paired with intermittent solar output can induce severe harmonic distortion and thermal stressing across tap changers and step-up units. Operating entities should adjust transformer maintenance schedules to inspect tap changer contacts and conduct regular oil testing to mitigate unexpected outage risks.