Annapurna provides technical assistance to shape and implement key energy policies, including the Solar Policy 2014-21, Karnataka Renewable Energy Policy 2022-27, Karnataka Energy Efficiency and Energy Conservation Policy 2022-27. She actively works with the Karnataka Renewable Energy Development Limited to design schemes and programs aimed at enhancing the state's renewable energy capacity. Her work emphasizes exploring and promoting innovative technologies such as green ammonia and green hydrogen, aligning with global sustainability goals and India's energy transition roadmap.