Energy & Resource | July 2026 | 5 min read
Pakistan’s move to make battery storage compulsory for new renewable energy bids marks a practical shift from simply adding clean power to managing when that power enters the grid.
⚡ Quick Takeaways
- Battery Energy Storage Systems will be mandatory for the upcoming 800 MW wheeling auction.
- Developers must install storage equal to at least 10 percent of firm solar or wind capacity.
- ISMO says the rule is aimed at curtailment, congestion and Pakistan’s duck curve challenge.
- Larger batteries may be allowed where bidders see stronger project economics.
- NEPRA is reviewing the proposed changes and has invited stakeholder comments within seven days.
| 800 MW planned wheeling auction capacity |
10% minimum battery storage requirement |
7 days stakeholder feedback window |
Why Storage Is Now Part of the Auction
The federal government has decided to make Battery Energy Storage Systems mandatory for bidders in its upcoming renewable energy auction, linking new solar and wind projects with storage from the start. The requirement will apply to Pakistan’s first wheeling auction, where surplus electricity generation capacity is to be offered through competitive bidding.
Under the proposal, developers must install battery storage equal to at least 10 percent of their project’s firm generation capacity. The rule is designed to make new renewable projects more useful for the grid, not only cheaper on paper. For Pakistan, this matters because fast solar growth has started changing demand patterns across the day.
The Independent System and Market Operator says the storage requirement can reduce congestion, limit renewable energy curtailment and support grid flexibility. It also sees batteries as a way to soften the duck curve, where demand from the national grid falls during sunny hours and then rises sharply after sunset.
| Policy Signal The mandate shows that Pakistan’s renewable policy is moving from capacity addition toward dispatch quality, grid stability and market readiness. |
What Developers Will Need to Factor In
For developers, the storage rule changes project design, financing and bid strategy. A solar or wind proposal can no longer be evaluated only on generation cost. Bidders will also need to account for battery size, charge-discharge cycles, degradation, land use, control systems and how storage improves revenue under the auction framework.
ISMO has said its financial modeling indicates that batteries can improve project returns up to a certain level. That is why 10 percent has been proposed as the minimum, while developers may install larger systems if they believe the economics support it. This flexibility is important because a wind-heavy project, a solar-heavy project and a hybrid site may not need the same battery configuration.
The proposal also follows consultations with prospective bidders and other stakeholders. According to ISMO, most stakeholders supported starting the competitive market with a mandatory storage requirement, provided the rule remains financially viable and practical during the first phase.
| Auction Element | Proposed Requirement | Expected Impact |
| Auction size | Up to 800 MW through the wheeling auction | Launches Pakistan’s first competitive allocation of surplus capacity |
| Battery storage | Minimum 10 percent of firm solar or wind capacity | Supports grid balancing, curtailment control and evening demand response |
| Storage scale | Developers may add more than the minimum | Allows stronger bids where larger batteries improve returns |
| Bid timeline | Deadline extension may be allowed when needed | Gives first-auction participants more practical room to prepare |
| Complaints | Grievance Redressal Committee proposed | Separates complaint handling from bid evaluation decisions |
Grid Pressure Behind the New Rule
The storage mandate is being shaped by a real operational challenge. As more consumers and businesses use solar power during the day, demand from the grid can fall sharply. When the sun sets, many consumers return to grid supply at nearly the same time. That evening jump creates pressure on generation planning, dispatch and network operations.
Without storage, renewable plants may also face curtailment when production is high but the grid cannot absorb the full output. Batteries can store part of that power and release it later, making renewable energy more dispatchable. This does not remove the need for transmission upgrades, forecasting and market discipline, but it gives system operators an additional tool.
ISMO has also pointed to examples from developing markets such as India, China, the Philippines and the Dominican Republic, where mandatory storage requirements have been used to integrate renewables. Pakistan appears to be choosing a similar early-stage approach rather than leaving storage entirely to market preference.
| Market Watch The key test will be whether storage improves reliability without making bids too costly for developers or end consumers. |
NEPRA Review and Next Steps
The proposed changes have been submitted to the National Electric Power Regulatory Authority for approval. The regulator has invited stakeholder feedback within seven days, which means developers, power purchasers, policy experts and consumer representatives will have a short window to raise concerns or suggest refinements.
Alongside the battery rule, ISMO has proposed allowing auction deadlines to be extended when necessary. Under the current framework, bidders have only one month to submit proposals, with no extension mechanism. For a first auction involving new market rules and storage design, extra flexibility may help avoid weak participation.
ISMO has also proposed a Grievance Redressal Committee with two independent board members and its chief executive to handle bidder complaints. This would separate complaint review from the auction committee, which currently evaluates bids and decides related complaints. If approved, the package would make Pakistan’s first renewable wheeling auction more structured, more transparent and more focused on grid stability.
Disclaimer: This article is based on available regulatory proposals and media reporting as of July 2026. Final auction conditions may change after NEPRA review and stakeholder feedback.
