The government plans to announce in its long-term energy strategy that renewables are a "major" energy source while continuing to support nuclear power because of its zero carbon emissions, a draft of the plan said Friday. The industry ministry presented the draft to a roundtable of experts studying the nation's energy policy through 2050, calling renewables an "energy source whose possibility of becoming a major (source) is greatly increasing." Although attention has been on whether a raw breakdown of the country's future energy mix will be included, the government is likely to postpone setting such numerical targets. The most recent targets set out in 2015 seek to have renewable sources account for 22 to 24 percent and nuclear 20 to 22 percent of electric power generation in fiscal 2030. The government is expected to finalize the long-term energy plan in April at the earliest.
Till now in this article series, we discussed how to optimise power consumption in BLE connected things to increase battery life and how to increase usable battery capacity of coin-cell batteries. The discussion was about getting the most out of battery. Talking about primary batteries, they also bring in other challenges. To address these challenges and to further increase battery life, an alternative power source comes to a rescue. In this part of the series, we will discuss the challenges imposed by primary batteries, and energy harvesting system.
Hydropower Basics Energy from moving water Source: Adapted from National Energy Education Development Project (public domain) Source: Tennessee Valley Authority (public domain) Hydropower generates electricity Hydropower is the largest renewable energy source for electricity generation in the United States. In 2016, hydropower accounted for about 6.5% of total U.S. utility-scale electricity generation and 44% of total utility-scale electricity generation from all renewable energy. Because the source of hydroelectric power is water, hydroelectric power plants are usually located on or near a water source. Hydropower relies on the water cycle Understanding the water cycle is important to understanding hydropower.
We are running out of time, as the Intergovernmental Panel on Climate Change (IPCC) warned last October in a special report, Global Warming of 1.5 C. National commitments under the 2015 Paris Agreement are only the first step toward decarbonization, but most countries are already lagging behind. It is time to take a fresh look at the role that nuclear energy can play in decarbonizing the world's energy system. Nuclear is already the largest source of low-carbon energy in the United States and Europe and the second-largest source worldwide (after hydropower). In the September report of the MIT Energy Initiative, The Future of Nuclear Energy in a Carbon-Constrained World, we show that extending the life of the existing fleet of nuclear reactors worldwide is the least costly approach to avoiding an increase of carbon emissions in the power sector. Yet, some countries have prioritized closing nuclear plants, and other countries have policies that undermine the financial viability of their plants.
Japan will focus more on renewables as a key power source in an effort to curb the country's nuclear dependence, a draft energy plan stated Wednesday, despite maintaining the same energy mix targets as before. The plan, which serves as a guide to the country's mid- to long-term energy policy, stresses the need for resource-poor Japan to build infrastructure that will enable it to contribute to the fight against global warming through reductions in carbon dioxide emissions. Nonetheless, the government kept the same targets for its mix of energy sources as in the previous plan. In fiscal 2030, it aims to have renewables account for 22 to 24 percent of electric power generation in the country, while nuclear is intended to comprise 20 to 22 percent. The government hopes to finalize the plan, presented Wednesday to a panel of experts under the Ministry of Economy, Trade and Industry, and seek Cabinet approval this summer, officials said.