{"id":6440,"date":"2020-08-10T14:08:48","date_gmt":"2020-08-10T13:08:48","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=6440"},"modified":"2022-08-10T22:42:46","modified_gmt":"2022-08-10T21:42:46","slug":"hydropower-vs-wind-energy-securing-the-worlds-electricity-supply","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/hydropower-vs-wind-energy-securing-the-worlds-electricity-supply\/6440\/","title":{"rendered":"Hydropower vs wind energy \u2013 securing the world\u2019s electricity supply"},"content":{"rendered":"
A recent report by the International Hydropower Association<\/a> (IHA) suggests that hydropower-based electricity generation hit a record 4,306 terawatt hours (TWh) in 2019, whereas the total annual capacity for wind energy in 2019 was just 1,404 TWh.<\/p>\n Despite generating 16% of the world\u2019s electricity, hydropower is yet to be adopted in every country. Innovation News Network\u2019s <\/em>digital editor, Caitlin Magee<\/a> spoke to hydropower expert Jose Manuel Chamorro from The University of the Basque Country, Spain, about the benefits of using hydropower and the challenges the industry faces.<\/p>\n Hydropower offers a sustainable alternative to the use of fossil fuel<\/a>, as Chamorro explains: \u201cDue to the flexibility of reservoir-based hydro, it is complementary to other inflexible renewable energy options. Therefore, the real environmental benefits are even greater, as hydropower can provide the required flexibility to achieve fully renewable power systems.”<\/p>\n By securing the supply of energy from sustainable sources, nations can end their dependency on fossil fuels and reduce their carbon footprint. A recent study led by Chamorro<\/a> evaluated the degree of energy security from hydropower. The study suggests that the flexibility of hydropower could fill the gaps left by wind and solar power, which offer intermittent energy supply.<\/p>\n \u201cCompared to other recognisable sources, hydropower has a large storage capacity and contributes to improve security of supply by generating electricity at times of high demand. Hydropower and other renewable energy sources can be seen as complementary since the former is able to balance renewables\u2019 intermittency<\/a>. All of this while taking into account some restrictions such as risk management and water supply for the people,\u201d said Chamorro.<\/p>\n Wind energy\u2019s impact on birds has been widely documented, with wind turbines killing up to 328,000 birds in North America each year. Wind turbines also have the potential to reduce, fragment, or degrade habitat for wildlife, fish, and plants.<\/p>\n Just as reducing downstream water flow can cause a loss of habitat, creating reservoirs to generate electricity in storage and pumped storage hydropower systems often cause upstream flooding that destroys wildlife habitats. However, just 8% of fish that pass through hydro plants die as a result of the technology.<\/p>\n When discussing the impact of hydropower on local wildlife, Chamorro added: \u201cThe main impacts of hydro plants on local wildlife are related to the building phase, such as the creation of large reservoirs in areas that used to be a wildlife habitat. During the operation phase, a hydro plant can affect wildlife, especially river fish. Currently, it is unlikely that new power plants with large reservoirs will be built in developed countries. What is feasible is the use of some reservoirs as mixed hydro pumped plants with minor investments. The construction of new pure pumped hydro power plant is also feasible increasing the storage capacity; in this case we think that the impact on wildlife is less.\u201d<\/p>\nThe environmental impact of hydropower<\/h3>\n
Sustainable energy\u2019s impact on wildlife<\/h3>\n
The greatest challenges facing sustainable energy<\/h3>\n