RENEWCONNECT - All about renewables & power sector

The world's most polluted cities are concentrated in South Asia, particularly in India, Pakistan, and Bangladesh, followed by China. These cities face extremely high levels of PM2.5 particulate pollution, often exceeding safe limits defined by the World Health Organization (WHO). Key Insights: India Dominates Pollution Rankings : Among the top 100 polluted cities globally, 39 are in India. Key cities like Delhi, Ghaziabad, Bulandshahr, and Noida frequently experience PM2.5 levels far beyond acceptable limits. Delhi, for instance, often records an Air Quality Index (AQI) above 500 during winters. Neighboring Countries : Pakistan and Bangladesh also face severe air pollution, with Lahore (Pakistan) frequently topping the global charts for the worst air quality. China’s Progress : While China is second in the number of polluted cities (30 out of 100), its efforts to mitigate pollution, including policies on renewable energy and urban planning, have led to a significant improvement in ...

Renewable energy generation has emerged as a key solution to tackle climate change, reduce greenhouse gas emissions, and move towards a more sustainable future. However, like any large-scale industrial activity, renewable energy generation can also cause environmental impacts and pollution, which need to be mitigated. While renewables like solar, wind, hydro, and geothermal utilize natural resources for energy generation, their deployment can sometimes lead to unintended environmental consequences. In this article, we will explore some of the key pollution and environmental issues associated with renewable energy, and discuss ways to minimize these impacts, particularly focusing on solar, wind, and hydro power. Solar Energy and Pollution Concerns Solar power generation has surged as one of the most promising renewable energy sources. Photovoltaic (PV) panels, solar farms, and concentrated solar power (CSP) systems are widely deployed to harness solar energy. While solar energy is regar...

Air pollution refers to the presence of harmful substances in the air, including gases, particulate matter, and biological molecules, that pose risks to human health, the environment, and the climate. These pollutants may come from various sources, both natural and man-made. Key Pollutants: Carbon Dioxide (CO2): A greenhouse gas emitted from burning fossil fuels (e.g., coal, oil, and gas), deforestation, and various industrial processes. Carbon Monoxide (CO): A colorless, odorless gas produced by the incomplete combustion of fossil fuels. Chlorofluorocarbons (CFCs): Chemicals used in refrigerants and aerosol propellants, responsible for ozone depletion. Nitrogen Oxides (NOx): Produced from vehicle emissions, industrial activities, and power plants, contributing to smog and acid rain. Sulfur Oxides (SOx): Emitted from burning coal and oil, leading to acid rain and respiratory problems. Methane (CH4): A potent greenhouse gas released from agriculture, livestock, and landfills. 2. C...

Research on air pollution spans a wide range of disciplines, focusing on understanding the sources, effects, and solutions to this global problem. Here are some of the key areas of research being conducted on air pollution: 1. Source Identification and Attribution Emission Inventories: Developing detailed inventories of air pollution sources, such as vehicles, industrial plants, agricultural activities, and natural sources like wildfires and dust storms. Source Apportionment Studies: Identifying the contribution of different pollution sources (e.g., traffic, industry, domestic) to overall air pollution levels in specific regions. Satellite Monitoring: Using satellite data to track pollution plumes, identify hotspots, and monitor transboundary pollution movement. 2. Health Impact Studies Epidemiological Studies: Investigating the short-term and long-term health impacts of air pollution exposure, including respiratory, cardiovascular, and neurological effects. Vulnerable Populations:...

India has launched several key campaigns and initiatives aimed at combating pollution, particularly air and plastic pollution. Below are some of the major ones: 1. Swachh Bharat Mission (Clean India Mission) Launch Date: October 2, 2014 Objective: This nationwide campaign aimed at cleaning streets, roads, and infrastructure of India’s cities, towns, and rural areas. The mission also focused on promoting sanitation and reducing waste. Pollution Focus: The campaign targeted solid waste management, including the reduction of plastic pollution. It encouraged the use of biodegradable materials and promoted the recycling of waste. 2. National Clean Air Programme (NCAP) Launch Date: January 2019 Objective: The NCAP aims to reduce air pollution levels across India. The goal is to reduce PM2.5 and PM10 concentrations by 20-30% by 2024 compared to 2017 levels. Implementation: The program involves both short-term and long-term actions at the city, regional, and national levels, focusing on ...

Some of key concerns about the transition from fossil fuel vehicles to electric and hydrogen vehicles are very relevant. The shift towards cleaner transportation is essential for addressing climate change, reducing pollution, and curbing carbon emissions. However, the question of what happens to existing petrol and diesel vehicles is significant. Let's explore your queries in detail: 1. Condition of Old Petrol and Diesel Vehicles on Roads Continued Usage: Old petrol and diesel vehicles will likely continue to be used until they reach the end of their life cycle. However, governments may introduce stricter emission norms and encourage phasing out older, more polluting vehicles. Resale and Export: These vehicles might find a second life in countries with less stringent environmental regulations, although this would only shift the pollution problem rather than solving it. 2. Best Possibilities for Using Fossil Fuel Vehicles in a Sustainable Manner Retrofitting: Converting existing ...