Editorial

Assam's solar power roadmap

The increasing generation of renewable energy like solar

Sentinel Digital Desk

The increasing generation of renewable energy like solar, wind and small hydropower is critical to reducing dependence on fossil fuel-based power generation towards achieving the climate action goal of keeping global temperature below 2 degrees Celsius. The commissioning of the Amguri solar power plant demonstrates Assam's commitment to the national goal of raising solar power generation to 300 gigawatts by 2030 while augmenting its electricity generation. Full commissioning of the 70-megawatt Amguri solar power plant will increase the state's solar power generation to 215 megawatts, and boost the confidence of power developers to fast-track large solar power projects including the grid-connected rooftop solar projects to tap the huge potential of renewable energy generation in the state. The Ministry of New and Renewable Energy (MNRE) set the target of generating 663 MW of solar energy in the current year in the state. The Ministry also allocated 250 MW of grid-connected solar rooftop projects by this year but the current generation is only 35 MW from rooftop solar projects, the state meet the target will depend on the pace of implementation of such projects. The Ministry provides a subsidy for grid-connected rooftop solar projects which can be harnessed to push such projects on residential and institutional rooftops of educational institutions, hospitals etc. Going by the official estimate for the requirement of 13 bighas of land for the generation of one megawatt of electricity, finding adequate unused open government land for too many large solar power projects is a challenging task for the Assam Power Generation Company Limited as well as private solar power developers. The 70-MW Amguri plant has been built on 340 acres of land for an estimated cost of Rs 344 crore which indicates the requirement of land for large solar power projects. While the survey to identify suitable land for ground-mounted large solar plants continues, prioritizing rooftop projects as well as off-grid solar projects will help the state increase solar power generation at a faster pace. Explaining the benefits of solar power production on the rooftop to an individual consumer, more particularly the working principle of the net metering system can evoke desired interest in such projects on a mass scale. In residential buildings, the net metering system facilitates two-way recording of the amount of electricity drawn from the distribution grid and export of solar power generated on the rooftop to the grid which is used to calculate the electricity bill with excess solar power supplied to the grid offsetting the monthly bill. The MNRE provides a 70% subsidy under a grid-connected solar rooftop programme for the installation of the solar photovoltaic system under two business modes. In the Capital Expenditure (CAPEX) mode, the beneficiaries are required to pay 30% of capital expenditures while they are entitled to get their electricity bill at discounted rates apart from the subsidy. Under the Renewable Energy Service Company (RESCO) mode, beneficiaries are not required to make any upfront investment but enjoy the benefit of cheaper electricity for 25 years for solar power generated by power developers on their rooftops. The tariff to be paid by the building owner to the RESCO developer has been fixed at Rs 3.43 a unit while the tariff for electricity drawn from the grid is Rs. 7.20 a unit. The building owner can also sell the excess power to the grid through a net metering system, and this allows power distribution companies like APDCL to draw cheaper energy to the grid. Simplifying the financial framework for individual residential consumers can remove the trust deficit which is posing a barrier to consumer-centric rooftop solar programmes despite huge benefits to individual building owners and the country. The Assam government announced the Mukhya Mantri Souro Shakti Prokolpo in its 2022-23 budget to increase the generation of clean energy in the state by installing solar power generation plants with an aggregated installed capacity of 1000 MW across the state in the next three years which outlines the roadmap for solar power generation. Successful and timely implementation of this ambitious project will be crucial for renewables sharing a significant percentage of the total energy mix towards achieving the goal of decarbonising power generation. Extreme weather conditions like excess rain over a short period instead of evenly spread out through the year resulting in worse flood situations and triggering massive landslides, temperatures soaring above normal are reminders to global communities for taking timely and result-oriented action to augment the generation of renewable energy for sustainable energy production before it is too late. Building awareness among electricity consumers will go a long way in fast-tracking the solar rooftop programme while smooth and faster execution of the large ground-mounted solar projects requires coordinated efforts by the Revenue and Power Departments for removing bottlenecks in the identification of suitable sites. Apart from attaining self-sufficiency, Assam charting a clear roadmap for solar power generation is critical to achieving the targets set in sync with national climate action goals.