Topics Covered:
- Conservation, environmental pollution and degradation, environmental impact assessment.
Wasted effort: half of India’s waste-to-energy plants defunct
What to study?
For Prelims and Mains: Waste- to- energy- India’s potential, challenges present and measures to address these challenges.
Context: An analysis by the Centre for Science and Environment has revealed that nearly half of India’s waste-to-energy (WTE) plants, meant to convert non-biodegradable waste, are defunct. Further, the country’s inability to segregate waste has resulted in even the existing plants working below capacity.
Key findings:
- Since 1987, 15 WTE plants have been set up across the country. However, seven of these plants have since shut down. Apart from Delhi, these include plants at Kanpur, Bengaluru, Hyderabad, Lucknow, Vijayawada and Karimnagar.
- The key reasons for closure are the plants’ inability to handle mixed solid waste and the high cost of electricity generated by them that renders it unattractive to power companies.
- This track record, however, has not stopped the government from betting big on WTE. The NITI Aayog, as part of the Swachh Bharat Mission, envisages 800 megawatt from WTE plants by 2018-19, which is 10 times the capacity of all the existing WTE plants put together.
- It also proposes setting up a Waste-to-Energy Corporation of India, which would construct incineration plants through PPP models. Currently, there are 40-odd WTE plants at various stages of construction.
Reasons for the inefficiency:
The fundamental reason (for the inefficiency of these plants) is the quality and composition of waste. MSW (municipal solid waste) in India has low calorific value and high moisture content. As most wastes sent to the WTE plants are unsegregated, they also have high inert content. These wastes are just not suitable for burning in these plants. To burn them, additional fuel is required which makes these plants expensive to run.
Why Waste to Energy?
Most wastes that are generated find their way into land and water bodies without proper treatment, causing severe water and air pollution. The problems caused by solid and liquid wastes can be significantly mitigated through the adoption of environment-friendly waste to energy technologies that will allow treatment and processing of wastes before their disposal.
- The environmental benefits of waste to energy, as an alternative to disposing of waste in landfills, are clear and compelling. Waste to energy generates clean, reliable energy from a renewable fuel source, thus reducing dependence on fossil fuels, the combustion of which is a major contributor to GHG emissions.
- These measures would reduce the quantity of wastes, generate a substantial quantity of energy from them, and greatly reduce pollution of water and air, thereby offering a number of social and economic benefits that cannot easily be quantified.
Some of the strategic and financial benefits from waste-to-energy business are:
Profitability – If the right technology is employed with optimal processes and all components of waste are used to derive value, waste to energy could be a profitable business. When government incentives are factored in, the attractiveness of the business increases further.
Government Incentives – The government of India already provides significant incentives for waste to energy projects, in the form of capital subsidies and feed in tariffs. With concerns on climate change, waste management and sanitation on the increase, the government incentives for this sector is only set to increase in future.
Related Opportunities – Success in municipal solid waste management could lead to opportunities in other waste such as sewage waste, industrial waste and hazardous waste. Depending on the technology/route used for energy recovery, eco-friendly and “green” co-products such as charcoal, compost, nutrient rich digestate (a fertilizer) or bio-oil can be obtained. These co-product opportunities will enable the enterprise to expand into these related products, demand for which are increasing all the time.
Emerging Opportunities – With distributed waste management and waste to energy becoming important priorities, opportunities exist for companies to provide support services like turnkey solutions. In addition, waste to energy opportunities exist not just in India but all over the world. Thus, there could be significant international expansion possibilities for Indian companies, especially expansion into other Asian countries.
The growth of this sector has been affected on account of the following limitations/ constraints:
- Waste-to-Energy is still a new concept in the country;
- Most of the proven and commercial technologies in respect of urban wastes are required to be imported;
- The costs of the projects especially based on bio-methanation technology are high as critical equipment for a project is required to be imported.
- In view of low level of compliance of MSW Rules 2000 by the Municipal Corporations/ Urban Local Bodies, segregated municipal solid waste is generally not available at the plant site, which may lead to non-availability of waste-to-energy plants.
- Lack of financial resources with Municipal Corporations/Urban Local Bodies.
- Lack of conducive policy guidelines from State Governments in respect of allotment of land, supply of garbage and power purchase / evacuation facilities.
Sources: the hindu.
Mains Question: As per a medium term proposal of Niti Ayog, the only viable solution to dealing with the massive waste problem in India is to incinerate the waste of go from waste to energy. Do you agree with such a view? Discuss
