Pakistan's Battery Boom Exposes the Hidden Cost of Rate Cuts: When Net Billing Pushes Self-Generation Underground

In December 2025, Pakistan's National Electric Power Regulatory Authority (NEPRA) initiated a public consultation on what amounts to a fundamental inversion of its net metering deal. The Prosumer Regulations 2025, finalized and notified in February 2026, cut the tariff paid for surplus rooftop solar power from PKR 26 (about $0.093 USD) per kilowatt-hour to PKR 13 (about $0.047 USD) per kWh^[5][6]. The shift from net metering (one-to-one energy offset) to net billing (market-linked buyback) was meant to ease financial pressure on state utilities. Instead, it triggered the opposite: households responded by installing batteries and abandoning the grid altogether^[1].

The scale of this defection is staggering. Since January 2024, Pakistan has imported batteries with a cumulative capacity of 6.004 GW^[1]. In April 2026 alone, 652.2 MW of battery capacity arrived in the country; during that single month, Pakistani citizens invested PKR 126 billion (about $453.6 million USD) in battery purchases^[1]. This is not a marginal adjustment. Pakistan's total power generation capacity stands at 39,000 MW (excluding solar)^[1], and transmission and distribution losses already account for up to 18 percent of total generation^[1]. Now the grid faces a new hemorrhage: registered net metering capacity sits at roughly 4 GW, but untracked off-grid solar capacity has grown to 11.5 GW^[8]. The state has lost visibility and control of its own distributed generation.

This is the mechanism the Pakistani government did not anticipate. When you cut the price of grid export below the cost of grid import, you make self-consumption rational, and self-consumption paired with cheap batteries (average cost fell from $151 per kWh in 2022 to $70 per kWh in 2025^[1]) makes full defection pencil. A household that used to sell surplus power at retail rates now stores it instead. The grid loses the revenue it needed to stay solvent. The utility's answer is always the same: raise the fixed charge, or cap system size, or require grid connection. Pakistan's government is now drafting a National Battery Framework to regulate what it created^[1], but regulation does not change the underlying economics. Once storage is cheaper than export fees are low, the math favors the battery.

The precedent matters globally. This is not a renewable-energy success story told by utilities. It is a rate-design failure exposed in real time. According to analysis by the Institute for Energy Economics and Financial Analysis, if just 25 percent of Pakistan's existing off-grid solar capacity were paired with storage, grid demand could drop by 8.4 percent^[9]. That is not a rounding error. That is a utility crisis. And it was manufactured by policy: the decision to cut export rates without understanding that the alternative was not lower demand for solar, but lower demand for the grid itself.

The deeper lesson cuts across borders. In the United States, utilities have long feared the same dynamic: as batteries cheapen, rate designs that penalize export (minimum bills, standby charges, demand charges) push customers toward full defection. The technical outcome is identical: the grid shrinks, fixed costs must be recovered from fewer customers, rates rise further, and the incentive to leave strengthens. Pakistan is experiencing this cycle compressed into months rather than years because battery costs fell faster than policy could adapt. The state bet that cutting export rates would stabilize utility finances. Instead, it accelerated the one outcome it most feared: voluntary disconnection at scale.

Pakistan has begun drafting a National Battery Framework^[1], but the framework is regulatory theater. The real alternative is rate design reform: income-graduated fixed charges that do not penalize self-generation, or net billing rates set at genuinely avoided-cost levels rather than below them, paired with transparent recovery of fixed costs outside the per-kWh charge. These designs exist. California has attempted graduated fixed charges; other markets have tested avoided-cost methodologies that separate the cost of the grid from the cost of the power. Pakistan's crisis is a warning: cut the buyback rate too sharply, and you do not force defection onto the grid's books. You force it off the books entirely. And once batteries are in the ground and the customer has proven grid independence, no regulatory framework will bring that load back.