With India’s energy sector improvement over the subsequent twenty years set to happen in opposition to a backdrop of accelerating water stress, the Worldwide Vitality Company (IEA) has suggested that water administration challenges be addressed whereas boosting energy capability. The company has come out with two key priorities to make sure a extra resilient energy sector.
“Shifting to dry and non-freshwater cooling to enhance the thermal fleet’s resiliency to water stress and absolutely integrating water-energy linkages in India’s know-how decisions and insurance policies will assist meet energy demand whereas lowering strain on valuable water assets,” mentioned Tomás de Oliveira Bredariol, IEA Vitality and Environmental Coverage Analyst; Molly Walton, Unbiased marketing consultant and Vaibhav Chaturvedi, Economist on the Council on Vitality, Surroundings and Water in an IEA observe.
Unenviable state of affairs
With simply 4 per cent of the world’s water provide however 18 per cent of its inhabitants, India counts as one of many world’s most water pressured nations. However its speedy financial ascent lately has put extra strain on power and water assets. Coal-fired energy era, which makes up about 70 per cent of electrical energy era in India, accounts for 80 per cent of the power sector’s water withdrawals. It’s important that operators enhance the share of dry or non-freshwater cooling in new thermal vegetation, retrofit previous ones and make higher use of water-recycling.
India is already utilizing non-freshwater cooling in a few of its vegetation. For instance, Mundra UMPP, third largest coal energy plant within the nation, was in-built a drought-prone space and makes use of desalinated seawater for cooling and different purposes. Indian authorities has additionally mandated coal vegetation to make use of recycled sewage water if they’re situated near municipal therapy vegetation. Nevertheless, simply 5-8 per cent of all coal vegetation in India have entry to handled waste water.
In the meantime, dry cooling has a better capital value and reduces energy manufacturing by 7-8 per cent in addition to the effectivity of the plant. Thus, solely 2 per cent of the coal energy vegetation use the know-how.
Want for govt financing
Upscaling of this know-how would require supporting insurance policies, equivalent to devoted authorities financing or an adjustment of energy costs in water-stressed areas, the observe mentioned.
Managing water use patterns in different sectors may also assist. In Gujarat, agricultural pumping accounts for greater than 20 per cent of the State’s power demand and shifting this load to the daytime would assist align peak demand with photo voltaic output. That is doable as a result of the State has a devoted agricultural feeder system, which permits the interruption of agricultural provide with out impacting different shoppers. .