Ahmedabad's Biogas Plant Failure Highlights Energy Crisis Amid LPG Shortage Concerns
Concerns over a potential LPG shortage in Ahmedabad have resurfaced, drawing attention to the Ahmedabad Municipal Corporation's (AMC) unsuccessful experiment to bottle and sell biogas produced from sewage sludge. The biogas bottling plant at Pirana, operated by the AMC, has remained non-functional for the past two years, failing to deliver on its initial promises.
Initial Plans and Operational Challenges
In 2018, the AMC established the plant with ambitious plans to compress and bottle 8,000 cubic metres of biogas daily for commercial sale. The corporation projected an annual revenue of approximately Rs 2.5 crore from this initiative. However, even during its operational phases, the plant could only manage to process a mere 200-300 cubic metres of biogas per day, far below its intended capacity.
An official from the AMC explained, "The plant commenced operations in October 2018 under a public-private partnership model, with a 15-year agreement in place. The sale price was fixed at Rs 9.18 per cubic metre." Despite these arrangements, the official noted that frequent malfunctions and improper operations prevented the realization of expected revenues.
Technical Failures and Plant Shutdowns
The plant encountered significant issues from the outset. Within two years of operation, a dome leakage occurred, leading to an initial closure. After repairs, the facility resumed operations until 2022, when a lightning strike damaged the dome, causing another shutdown. Although subsequent repairs were made, the plant has been closed since 2024, with no recent activity reported.
The official further detailed, "The 180 million litres per day (MLD) capacity sewage treatment plant (STP) at Pirana generated 8,000 cubic metres of biogas daily. To utilize this resource, expressions of interest were invited for gas compression." However, the persistent technical problems hindered effective utilization.
Current Plans and Broader Context
In response to these failures, the AMC is now initiating a tender process to upgrade and restart the plant. Plans are in place to enhance the facility to sell 3,000-3,500 cubic metres of biogas daily, a revised target from the original 8,000 cubic metres.
An AMC source revealed, "No official statistics on annual biogas generation at the Pirana plant have been released, and there is no public information available regarding the revenue generated." This lack of transparency adds to the concerns surrounding the project's effectiveness.
Ahmedabad city produces 1,693 MLD of sewage, while the corporation's 16 treatment plants have a combined capacity of 1,252 MLD. Currently, only 1,080 MLD of sewage is treated daily, with 613 MLD flowing directly into the Sabarmati River, underscoring the urgent need for improved waste management and energy solutions.
Implications for Energy Security
The failure of the biogas plant comes at a critical time, as Ahmedabad faces potential LPG shortages, highlighting the importance of alternative energy sources. The AMC's efforts to revive and upgrade the plant could play a key role in addressing these energy challenges, provided the technical and operational issues are effectively resolved.
