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In dense parts of Lahore, Karachi and Islamabad, higher output per square metre could eventually be valuable. Yet a panel has to survive years of heat, moisture and outdoor exposure, while manufacturers must preserve performance as they scale from small cells to full modules. Those are still central commercial hurdles. A Pakistani buyer should therefore compare warranted energy output and installed cost, not choose a technology on a laboratory record alone. NLR
What nobody should promise is a firm year when tandems will become the obvious purchase for every Pakistani roof. Early products and wider adoption will follow different schedules, and neither makes a properly designed system installed today obsolete.
2. Batteries change what solar electricity is worth
A panel produces when sunlight is available; a household needs power when its loads demand it. That mismatch is why storage has become central to the discussion. A battery can move some daytime generation into the evening and support selected loads during an outage, provided the inverter, wiring, protection and backup configuration are designed for it.
Lithium-ion—particularly lithium iron phosphate, or LFP—is already used widely for stationary storage. Sodium-ion is a serious emerging alternative, but “sodium is cheaper” is too simple a buying rule. The International Energy Agency reported that sodium-ion production in 2025 remained less than 1% of lithium-ion production, and that prevailing lithium prices did not yet allow sodium-ion to beat LFP costs in most applications. Its appeal may grow as manufacturing expands and supply chains develop. IEA
