Tata Power SED is the lead contractor along with Larsen & Toubro Limited for the Pinaka Multi Barrel Rocket Launcher (MBRL) system.
[3] Tata power SED is building the launchers for the Akash SAM systems for the Indian Air Force.
[4] Tata Power SED built the control systems for the Arihant class of submarines.
[citation needed] Developing 155 x 52 cal Artillery Gun for the Indian Army.
Recently, India's Ministry of Defence awarded a ₹1600 crore ($120 million) contract to the company to modernize 37 airfields in the country.