Marine Electricals shares surged around 8% on Monday, September 21, after the company announced its latest capacity expansion update with the launch of a new manufacturing facility in Goa. The rally saw the stock climb 7.7% to an intraday high of ₹408.65, compared with ₹379.20 at the previous equity market close, according to NSE data. Investors reacted positively to the announcement, which highlighted the company’s expansion plans and its focus on power train units for data centres.

Shares of Marine Electricals rose 7.7% to hit an intraday high of ₹408.65 apiece on Monday’s market, in comparison to ₹379.20 apiece at the previous equity market close, according to NSE data. The intraday gains were supported by trading volumes surpassing 1.3 million equity shares across both NSE and BSE combined, reflecting strong investor interest in the new manufacturing facility’s capability to produce power train units for data centres.

Trading volumes surpassing 1.3 million equity shares across both NSE and BSE combined triggered the intraday gains, as investors focused on the new manufacturing facility’s capability to make power train units (PTUs) for data centres. As of the afternoon market hours, the company’s stock retracted from its intraday high, trading 7% higher at ₹405.75 apiece during the trading session on September 21, indicating a partial profit‑taking by some investors.

NSE filings showed that Marine Electricals on Monday, September 21, inaugurated its sixth manufacturing facility in Goa with a combined floor space of approximately 1,60,000 sq. ft., expanding the company’s overall manufacturing and operational capacity. The new manufacturing facility in Goa will exclusively focus on manufacturing PTUs (Power Train Units) for Data Centres and Shore Conversion Systems for Ports, as per the exchange filing. Starting its operations last week, on September 14, 2026, the company estimates the facility to achieve its full manufacturing capacity of approximately 800 PTUs for data centres per year by March 2027.

The company also said that the new facility will generate employment opportunities in the region, with roles across production, engineering, logistics, quality assurance and other operational functions. The existing fully operational five units in Goa and one unit in Vadodara will continue to manufacture LV/MV switchboards and busducts, according to Marine Electricals in its exchange filing. The company expects the new facility to strengthen its production capabilities, improving operational efficiency and supporting the growing demand from its Marine and Industrial business segments.

Marine Electricals shares have rallied 92% year-to-date (YTD) in 2026, and have gained 8% in the past one-month period, according to the exchange data. However, the company’s stock has declined 3% in the last five market session basis. On a longer-term basis, NSE data also showed that Marine Electricals shares have delivered more than 987% returns to investors in the last five years, over 575% gains in the last three years, and more than 83% returns on their investment in the past one-year period. Shares of Marine Electricals surged to their 52-week high of ₹450 apiece on September 3, 2026, while the 52-week low was at ₹150.86 apiece on March 30, 2026. The company’s market capitalisation (m-cap) was at ₹5,865 crore as of the trading session on Monday, September 21, 2026.