b'Education matters Figure 2.Energy flow across the USA economy in 2018. An interactive version (https://bit.ly/3hHLoow) may be more instructive. Source: Otherlab, 2018.global problem of climate change causedphotovoltaics and the solar panels manypower demand using gas, coal, solar, and by an accumulation of CO 2and otherreaders have installed. However, there arebattery.greenhouse gases in the atmosphere.other forms of solar power systems, such Nowadays, humans emit 100 times moreas concentrating power, large industrialWhat I liked about this detail-rich course carbon dioxide than the analogoussystems that concentrate the sun to highis that it addresses both how to reduce natural processes altogether. Part ofintensity, or solar power for hot waterenvironmental impacts, and how to this CO 2will stay in the atmosphere forheating or other solar heating systems.make the energy systems more reliable thousands of years. Global efforts areWhile the latter can be rather consideredand democratic. Equipped with the necessary to change the trends. as a part of smart building systems, theknowledge provided in the course, former has true potential but it is still atreaders can make informed decisions both Generation and production of energythe development stage. working on governmental regulations and need land. Power density, the rate at whichdeveloping environmentally friendly and energy is extracted per unit of land, isThe main issue with solar power is thataffordable future energy systems.used for the evaluation of land footprintsit is intermittent. Can we make use of of energy technologies. Twenty percentintermittent renewables and still enjoyReferencesof the entire surface of the Earth woulda reliable electric power supply? The be required to run a future energy systemanswer is yes, and one option is the useAustralian Broadcasting Commission, using exclusively biofuels technology. Thisof natural gas to provide peak power.2021, Federal government will spend is more than is currently used for cropland. The advantage of natural gas is that it$600 million on new Kurri Kurri gas Fortunately, solar power density isis cheap, dispatchable, and, if it is onlyplant in the NSW Hunter Valley, an order of magnitude higher thanused to provide peak power, the totalhttps://ab.co/3hLtbqcbiofuels, and only two percent of thecarbon emissions to the atmosphereBridges, J. 1973, Understanding the Earths surface suffices. This makes solaris much less than those coming nowNational Energy Dilemma, EAPA 74-2the most promising alternative amongfrom electricity systems dominated byInternational Energy Agency, 2021, Net all contemporary renewable energycoal. The course offers an electricityZero by 2050: A Roadmap for the technologies. system planning and dispatch calculator,Global Energy Sector, https://iea.li/which allows calculating electricity costnzeroadmapTypically, when we talk about solarand carbon emissions associated withOtherlab, 2018, US Energy Flow Super energy, we usually refer to solardifferent scenarios to meet electricSankey, https://bit.ly/3hLETRK37 PREVIEW JUNE 2021'