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Water and power needs of a fab
A modern semiconductor fab consumes very large volumes of ultrapure water and electricity, so utilities are a core part of siting one. This page explains why fabs are so resource-intensive, how these needs are usually met, and how Dholera is being set up to supply them, with honest notes on what is still being built.
Last checked 2026-08-11 · every figure below carries its source
Why fabs need so much water
Semiconductor fabrication uses water in enormous quantities, primarily as ultrapure water for cleaning wafers between the many processing steps. Even tiny impurities can ruin a chip, so the water must be purified far beyond drinking standards, and each wafer passes through cleaning stages repeatedly. A large fab can therefore consume millions of litres of water per day. Because of this appetite, water availability and reliability are among the first questions when siting a fab. Regions with variable or stressed water supply face real constraints, which is why fabs are increasingly designed to recycle and reuse a significant portion of their water rather than draw fresh supply for every use. Reclaim systems capture used process water, treat it, and return it to the line, reducing net demand. This is now standard practice in advanced fabs worldwide, driven by both cost and sustainability pressures. For a country entering the industry, ensuring a dependable, high-volume water supply, ideally paired with recycling, is a basic prerequisite. It is a well-established public fact that fabs are among the more water-intensive industrial facilities, which is why utility planning tends to feature prominently in any credible fab project.
Why fabs need so much power
Fabs are also highly electricity-intensive. They run continuously, since stopping and restarting sensitive processes is costly and risky, and they operate cleanrooms, precise climate control, vacuum systems, and power-hungry tools such as lithography and etching equipment around the clock. This means a large fab draws a substantial and very steady electrical load, and even short interruptions can spoil batches of wafers in progress. Reliability therefore matters as much as raw capacity. A fab needs power that is not only plentiful but consistent, with backup and grid stability to avoid disruptions. This is one reason fabs are often paired with dedicated or nearby generation and robust grid connections. There is also growing attention to the source of that power, with many operators seeking renewable or low-carbon electricity to reduce both emissions and long-term cost exposure. For a new fab location, the practical requirement is a firm, high-capacity, reliable power supply, planned in advance and able to scale as the fab ramps up. As with water, this is a well-understood feature of the industry rather than a Dholera-specific claim, and it shapes where fabs can realistically be built.
How Dholera is being set up
Dholera is being developed with these utility demands in mind. On power, the industrial region is paired with the Dholera Ultra-Mega Solar Park, which has a target capacity of 5,000 MW. Reported status shows roughly 300 MW operational and a Phase-I of 1,000 MW sanctioned, so the full target is a long-term goal rather than a present reality. This pairing signals an intent to supply large, and partly renewable, power to industrial users including the fab. On water, the Activation Area (the first phase of Dholera to get roads, water, power and drainage) includes a water treatment plant of about 50 million litres per day and a recycled-water network, reflecting the smart-city design principle of reusing water where possible. This combination of a treatment plant and a reclaim network is the kind of setup a fab requires. Some discussions reference longer-range or desalination-based water supply for the region, but those should be treated as planned or unverified until confirmed rather than as existing capacity. The overall approach at Dholera is to route utilities in through the planned infrastructure of the region, which is a logical fit for a resource-hungry facility, while acknowledging that capacity is being built in phases alongside the fab.
What to watch and realistic caveats
The key thing to watch is whether utility capacity keeps pace with the fab as it moves from construction toward production. A master plan and a target capacity are not the same as delivered, reliable supply at the moment a fab needs it. The solar park's 5,000 MW is a target, with a much smaller share operational today, so firm power for a running fab will depend on continued build-out and grid arrangements. Similarly, the water treatment plant and recycling network are designed features, and their adequacy will be tested as demand rises. None of this is unusual. Utility infrastructure for a major fab is typically staged, expanding as the plant ramps, and the honest expectation is gradual scaling rather than everything being ready at once. The realistic view is that Dholera has been planned with fab-scale water and power in mind, which is a genuine advantage over an unplanned site, while the actual sufficiency of that supply during full production remains something to verify as the project progresses. For now, first silicon is targeted around December 2026 and commercial production is reported for the middle of 2028, so utility ramp-up runs on a similar multi-year timeline.