The government has made conditional approval for setting up a captive power plant to feed requirement of electricity at under-construction Araihazar Economic Zone in Narayanganj.
Prime Minister’s Office made the approval recently as the Japanese consultant firm JV of NIPPON KOEI raised questions over the standard of national grid electricity.
“Japanese Araihazar Economic Zone (EZ) in Narayanganj will take necessary step for setting up captive power plant to maintain stable frequency and voltage. But the EZs don’t sale electricity to BPDB,” PMO meeting minutes said.
The PMO also asked to the BEZA for reviewing the downward adjustment of DPP for implementing the EZ project as the Japanese Araihazar Economic Zone will not require grid power.
Grid frequency is a critical aspect of power supply operations, with global standards requiring that grid frequency be kept close to 50 hertz (Hz). Fluctuations in the frequency affect mechanical equipment, their functions and the supply systems as well.
Power Division said the government will need at least three years to stabilise the power grid frequency.
The Japanese firm has raised questions over the frequency of 230KV grid run by state-owned Power Grid Company of Bangladesh (PGCB).
After the concern was raised, Power Division has informed the Prime Minister’s Office about the power transmission system to supply electricity to the Japanese Economic Zone.
Earlier, JV of NIPPON KOEI has proposed to establish a separate power plant having the capacity to generate 35MW of electricity to ensure a stable supply of power to the Japanese Economic Zone.
Power Division informed the PMO that the Japanese Economic Zone will require only a megawatt of electricity in 2022, 6 MW in 2025 and 35MW in 2028.
The government has already taken initiatives to implement a series of power projects having combined capacity to generate 46,598MW of electricity under Build, Own and Operation (BOO) under the Private Power Generation Policy.
For this, the Power Division has already signed project deals with these companies and issued Letters of Intent (LoI) in this regard.
As a part of this, the government has already implemented two separate RLNG-based power projects having a capacity 785 MW each adjacent to the Japanese Economic Zone area.
Besides, another three under-construction powers will also add 1885MW of electricity to the national grid in 2023.
The Rooppur Nuclear Power will add another 2400MW of electricity in 2024.
The government is also considering 1496MW of electricity import from the Indian Adani Group from December 2022.
“So, the government will be able to meet the demand of electricity supply to economic zones from the grid power,” Power Division told the PMO in a letter earlier.
“The problem of the grid frequency and voltage fluctuation will be solved after commissioning the Rooppur Nuclear Power Plant as nuke plant will require specific frequency (50+0.2HZ),” the letter added.
The Power Division has proposed to set up Variable Frequency Drive (VFD) in the consumer end for regulating the frequency.
It also suggested PGCB for setting up necessary electric devices for maintaining the standards at economic zones.
Industrial units are consuming around 4,000MW of captive power as the distribution companies have failed to ensure quality electricity supply to heavy industrial units, official sources said.
According to the Japanese consultancy firm study, all manufacturing industries will be negatively affected by poor power quality. “High-quality electricity will bring high-quality investors.”
High-cost facilities including semiconductor plants, pharmaceuticals and data centres and medium-cost facilities including automotive manufacturing, glass plants, plastics and chemicals and textile factories might be affected by any fluctuations in electricity voltage.
Japan follows the standard of 49.8 Hz to 50.2 Hz in grid frequency.