{"id":54919,"date":"2025-07-15T11:27:15","date_gmt":"2025-07-15T05:57:15","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=54919"},"modified":"2025-07-15T11:28:13","modified_gmt":"2025-07-15T05:58:13","slug":"indias-revised-so%e2%82%82-emission-norms","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/indias-revised-so%e2%82%82-emission-norms\/","title":{"rendered":"India\u2019s Revised SO\u2082 Emission Norms: Why the Government Eased Rules for Power Plants"},"content":{"rendered":"<h2><b>Revised SO\u2082 Emission Norms India Latest News<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Union Environment Ministry has defended its recent order revising SO\u2082 emission norms for thermal power plants.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It clarified that exempting many coal- and lignite-based plants from mandatory <\/span><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/flue-gas-desulphurisation\/#:~:text=FGD%20is%20done%20through%20the,limestone%20scrubbing)%20is%20also%20widespread.\" target=\"_blank\"><span style=\"font-weight: 400;\">flue gas desulphurization<\/span><\/a><span style=\"font-weight: 400;\"> retrofits was based on evidence, emission trends, and sustainability needs.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The ministry stated there was no significant difference in ambient SO\u2082 levels between cities with or without such technology, countering claims of regulatory dilution.<\/span><\/li>\n<\/ul>\n<h2><b>Sulphur dioxide: A Significant Air Pollutant<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sulphur dioxide (SO\u2082) is a major air pollutant primarily released from coal-fired power plants and other fossil fuel combustion.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It poses serious health and environmental risks. As a respiratory irritant, SO\u2082 can trigger asthma, bronchitis, and other lung diseases.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is also a precursor to PM2.5, fine particulate matter linked to heart attacks, strokes, and premature death.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Beyond human health, SO\u2082 contributes to acid rain, harming soil quality, aquatic ecosystems, and plant life.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Its combined direct and indirect effects make SO\u2082 control vital for public health, environmental protection, and climate resilience.<\/span><\/li>\n<\/ul>\n<h2><b>India and Sulphur Dioxide Emission<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India is the world&#8217;s largest emitter of sulfur dioxide (SO2), primarily due to its heavy reliance on coal for power generation.\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">In 2022, India was the world\u2019s largest emitter of sulphur dioxide (SO\u2082), contributing over 20% of global anthropogenic emissions due to its coal-heavy power sector.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">India topped SO\u2082 emissions from electricity generation at 6,807 kilotonnes, far ahead of countries like Turkey, Indonesia, South Africa, and Saudi Arabia.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">While SO2 levels have shown a declining trend, they remain high in certain regions like the Indo-Gangetic Plain, central and eastern India.<\/span><\/li>\n<\/ul>\n<h2><b>The Revised SO\u2082 Norms<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Union Environment Ministry has defended its order revising sulphur dioxide (SO\u2082) emission norms for thermal power plants, countering claims of regulatory dilution.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The ministry cited research from IIT Delhi, NEERI, and others, noting no major public health concern from current ambient SO\u2082 levels and highlighting that sulfate aerosols from SO\u2082 contribute minimally to PM2.5 pollution.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">FGD systems, which cut sulphur dioxide (SO\u2082) emissions from coal plants, were made <\/span><b>mandatory in 2015<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Yet, only 8% of India\u2019s 180 coal plants have installed them so far, with delays attributed to high costs and limited availability.<\/span><\/li>\n<\/ul>\n<h3><b>Rationale Behind the Policy Shift<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">According to the Ministry, <\/span><span style=\"font-weight: 400;\">India\u2019s ambient SO\u2082 levels have been declining<\/span><span style=\"font-weight: 400;\">, with 2023 measurements across 492 cities showing compliance in all but two.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Indian coal naturally has low sulphur content<\/span><span style=\"font-weight: 400;\">, leading to relatively lower SO\u2082 emissions.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Studies have found no major difference in SO\u2082 concentrations between cities with and without FGD-fitted plants.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Ministry noted that eliminating all SO\u2082 emissions would only marginally improve particulate matter (PM2.5) levels, while retrofitting all plants would cost around \u20b92.54 lakh crore \u2014 a disproportionately high investment for limited environmental benefit.<\/span><\/li>\n<\/ul>\n<h3><b>Key Highlights of the Revised SO\u2082 Norms<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Category A Plants (11% of Total Units)<\/b><span style=\"font-weight: 400;\">: Located within 10 km of Delhi-NCR or cities with over 1 million population. Must comply with SO\u2082 norms by end-2027.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Category B Plants (11% of Total Units)<\/b><span style=\"font-weight: 400;\">: Located within 10 km of critically polluted areas or non-compliant cities. Norms apply case-by-case based on expert committee recommendations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Category C Plants (78% of Total Units)<\/b><span style=\"font-weight: 400;\">: Located outside A and B zones. Fully exempted from SO\u2082 norms but must meet stack height criteria.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Plants Retiring Before 2030<\/b><span style=\"font-weight: 400;\">: Exempt from SO\u2082 norms if they submit an undertaking. Those operating beyond 2030 must pay \u20b90.40 per unit as compensation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Scientific Basis<\/b><span style=\"font-weight: 400;\">: Revision backed by studies from IIT Delhi, NEERI, and CPCB, showing no significant difference in SO\u2082 levels between areas with and without FGD retrofits.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cost Consideration<\/b><span style=\"font-weight: 400;\">: Estimated \u20b92.54 lakh crore required for FGD retrofitting across India, prompting focus on high-impact areas only.<\/span><\/li>\n<\/ul>\n<h2><b>Global Standards Context<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Ministry also highlighted that India\u2019s annual SO\u2082 standard (50 micrograms\/cubic metre) is stricter than those of countries like Japan and Australia.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Given these factors, the revised norms aim to balance public health priorities with economic and operational realities, focusing regulatory efforts where they are most needed.<\/span><\/li>\n<\/ul>\n<p><b>Source:<\/b> <a href=\"https:\/\/www.thehindu.com\/sci-tech\/energy-and-environment\/environment-ministry-defends-new-coal-plant-norms-as-cost-effective-climate-coherent\/article69811706.ece#:~:text=The%20Ministry%20of%20Environment%20and,and%20climate%2Dcoherent%20regulation%E2%80%9D%20and\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">TH<\/span><\/a><span style=\"font-weight: 400;\">\u00a0| <\/span><a href=\"https:\/\/indianexpress.com\/article\/india\/govt-defends-revised-framework-for-so2-emission-norms-10126453\/lite\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">IE<\/span><\/a><span style=\"font-weight: 400;\">\u00a0| <\/span><a href=\"https:\/\/energyandcleanair.org\/publication\/increased-so2-emissions-from-coal-fired-power-plants-fgd-installation-should-not-be-delayed-further\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">CERA<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>India eases SO\u2082 norms for thermal plants citing scientific evidence and cost concerns. Learn about categories, compliance deadlines, and health impact.<\/p>\n","protected":false},"author":18,"featured_media":54948,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[60,1537,22,59],"class_list":{"0":"post-54919","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-mains-current-affairs","8":"tag-mains-articles","9":"tag-revised-so-emission-norms-india","10":"tag-upsc-current-affairs","11":"tag-upsc-mains-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/54919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=54919"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/54919\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/54948"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=54919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=54919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=54919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}