Indian stock markets ended on a mixed note on May 18, 2026, with benchmark indices showing marginal movement amid cautious investor sentiment across the green energy and power sector. The S&P BSE SENSEX managed to close slightly higher by 0.13 percent at 75,333.30, while the NIFTY 50 slipped marginally by 0.07 percent to settle at 23,626.90.
Despite the relatively stable performance of the broader indices, most green energy, utility, and power-related stocks witnessed mild corrections during the trading session. The sector largely remained under pressure due to routine profit-booking and cautious market activity.
Among the major gainers, JSW Energy emerged as the top performer in the energy space. The company’s stock rose sharply by 3.02 percent on the BSE to close at Rs 530.40, while it also gained 2.81 percent on the NSE. Engineering and infrastructure major Larsen & Toubro (L&T) also ended the day in positive territory, posting a modest gain of around 0.30 percent to close at Rs 3,918.90 on the BSE.
On the losing side, Insolation Energy witnessed the steepest decline among key renewable energy stocks. The company’s shares dropped by 4.61 percent on the BSE to settle at Rs 119.90. Battery and energy storage companies also faced selling pressure during the session. Amara Raja Energy & Mobility declined by more than 1.5 percent to close near Rs 811.55, while Exide Industries fell around 1.76 percent to end at Rs 343.00.
Reliance Industries remained largely flat, recording only a marginal decline of 0.10 percent to close at Rs 1,334.95. Public sector energy companies also traded lower, with Indian Oil Corporation (IOC) declining by 2.04 percent to Rs 131.80, while GAIL slipped by 1.20 percent to Rs 160.55. NTPC Green Energy Limited also ended nearly 1 percent lower at Rs 106.95.
In the renewable energy segment, Adani Green Energy fell by 0.70 percent to close at Rs 1,368.45, while Tata Power declined by 0.77 percent to Rs 404.00. Other renewable energy stocks, including Olectra Greentech, Websol Energy, and Sterling and Wilson Renewable Energy, also closed over 2 percent lower, reflecting a broad-based consolidation across the sector.
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