{"id":34695,"date":"2017-04-13T10:00:00","date_gmt":"2017-04-13T10:00:00","guid":{"rendered":""},"modified":"2020-09-22T12:02:18","modified_gmt":"2020-09-22T12:02:18","slug":"9695-wasting-less-renewable-energy-could-boost-china-s-air-quality","status":"publish","type":"post","link":"https:\/\/dialogue.earth\/en\/pollution\/9695-wasting-less-renewable-energy-could-boost-china-s-air-quality\/","title":{"rendered":"Wasting less renewable energy could boost China\u2019s air quality"},"content":{"rendered":"<p dir=\"ltr\"><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Presenting his 2017 government work report to the National People\u2019s Congress in March, Premier Li Keqiang stressed the importance of making China\u2019s skies blue again by integrating renewables more effectively into the power grid.<\/span><\/p>\n<p>Despite its enormous <a href=\"https:\/\/www.reuters.com\/article\/us-china-energy-renewables-idUSKBN14P06P\">investment in renewable energy<\/a> and owning the most installed capacity globally, China is yet&nbsp;to reap the full benefits from its renewable sectors. <a href=\"https:\/\/www.chinadialogue.net\/article\/show\/single\/en\/8965-Blowing-in-the-wind\">Record high curtailment<\/a> of renewable energy prevents these resources from effectively contributing to clearer skies. Addressing the problem won\u2019t be easy but would be a major boon for air quality.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><strong>Record energy losses<\/strong><\/span><\/p>\n<p>Curtailment occurs when the grid can\u2019t handle all the resources feeding into it. According to China\u2019s National Energy Agency (NEA), the <a href=\"https:\/\/www.nea.gov.cn\/2016-02\/02\/c_135066586.htm\">national average wind curtailment rate in 2015<\/a> was 15%. Using the same method of calculation, it rose to <a href=\"https:\/\/www.nea.gov.cn\/2017-01\/26\/c_136014615.htm\">17% for 2016<\/a>.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">The 11 provinces with three-quarters of the country\u2019s installed wind power capacity&nbsp;curtailed 49.7 terawatt hours (TWh) of wind power last year, enough to power Beijing for six months.<\/span><\/p>\n<p>The average photovoltaic (PV) curtailment rate in northwestern China in <a href=\"https:\/\/www.nea.gov.cn\/2017-01\/19\/c_135996630.htm\">2016 was 20%<\/a> \u2013 a total of 7 TWh of PV curtailed. Together, this represents 56.7 TWh of clean power not delivered to the grid. For comparison, that\u2019s about one sixth of the UK\u2019s entire electricity generation.<\/p>\n<p><strong><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Energy production and curtailment of wind and solar in 2016<\/span><\/strong><\/p>\n<p dir=\"ltr\"><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><img decoding=\"async\" src=\"https:\/\/chinadialogue-production.s3.amazonaws.com\/uploads\/content_image\/content_image\/2408\/Screen_Shot_2017-03-24_at_14.24.35.png\" style=\"border: none; width: 560px; height: 638px;\"><\/span><\/p>\n<p dir=\"ltr\"><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><span class=\"caption\">Solar energy production and curtailment data is only shown for provinces in the <\/span><\/span><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><span class=\"caption\">northwest.&nbsp;<\/span><\/span><span><span class=\"caption\">Source: NEA<\/span><\/span><\/p>\n<p>But overall rates do not tell the whole story because curtailment in some provinces is well above average.<\/p>\n<p>Losses are worst in the bright and windy northwest. Gansu province curtailed 40% of its wind and solar energy in 2016, and Xinjiang had to dump 37%. Gansu, Xinjiang and Inner Mongolia have China\u2019s greatest installed capacity of wind and solar and so a large share of energy production.<\/p>\n<p><strong>Installed wind and solar capacity and curtailment rates in 2016<\/strong><br \/>\n<img decoding=\"async\" alt=\"\" src=\"https:\/\/chinadialogue-production.s3.amazonaws.com\/uploads\/content_image\/content_image\/2502\/Screen_Shot_2017-04-10_at_15.55.30.png\" style=\"width: 560px; height: 165px;\"><\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">To put China\u2019s levels of curtailment in perspective, it\u2019s worth contrasting them with the situation in the US and Europe where rates are typically <\/span><a href=\"https:\/\/www.ieawind.org\/task_25\/PDF\/011116\/WIW15Curtailments_yasuda_final.pdf\">between 0-5%<\/a>, even in countries that have a higher proportion of renewables in the overall energy mix. Some curtailment can be economically justified to ensure the stability of supplies to the grid and enable high shares of renewables.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><strong>Tackling the problem<\/strong><\/span><\/p>\n<p>The government recognises that curtailment is an obstacle to a greener, more sustainable energy system.<\/p>\n<p>A <a href=\"https:\/\/www.raponline.org\/a-new-framework-for-chinas-power-sector\/\">document<\/a> published in 2015 set the direction for reforms in the power sector, highlighting measures that can reduce energy waste by improving dispatch to the grid and increasing cross-provincial energy trading.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">A subsequent<\/span><a href=\"https:\/\/www.raponline.org\/chinas-string-of-new-policies-addressing-renewable-energy-curtailment-an-update\/\"> set of policies<\/a> issued last year aimed to further reduce curtailment by prioritising renewable energy in dispatch, and compensating generators for curtailment. These policies have yet to be fleshed out and implemented though.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">When the NEA published the <\/span><a href=\"https:\/\/www.gov.cn\/xinwen\/2016-11\/07\/content_5129638.htm\">13th Five-Year Plan for the power sector<\/a> in November 2016, it said it wanted to reduce curtailment to a reasonable level within five percent, but provided no details of specific short-term measures.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><strong>Benefits for air quality<\/strong><\/span><\/p>\n<p>Tackling the curtailment problem is crucial not just for the efficient functioning of the electricity system but because renewables can displace dirtier forms of energy such as coal. Air pollution is a serious problem in all of China\u2019s provinces, <a href=\"https:\/\/www.chinadialogue.net\/article\/show\/single\/en\/9531-Pressure-builds-to-fight-smog-in-Western-China-\">including ones with high curtailment rates<\/a>.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">In 2015, no province met the World Health Organization\u2019s <\/span><a href=\"https:\/\/www.who.int\/mediacentre\/factsheets\/fs313\/en\/\">air pollution guidelines<\/a> for PM2.5 concentrations, and most fell short of China\u2019s <a href=\"https:\/\/www.chinadialogue.net\/article\/show\/single\/en\/9574-Can-China-meet-its-2-17-air-quality-goals-\">less stringent national guidelines<\/a>.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">So ensuring the full utilisation of renewables already installed could yield significant air quality benefits.<\/span><\/p>\n<p>A rough calculation of renewable energy lost in Gansu, Xinjiang, and Inner Mongolia \u2013 the three provinces curtailing most renewables \u2013 suggests that China needlessly mined, transported and burned 13.2 million tonnes of coal in 2016.<\/p>\n<p>Getting curtailment down to five percent or below would cut tonnes of pollutants caused by coal burning. The <a href=\"https:\/\/www.healtheffects.org\/publication\/burden-disease-attributable-coal-burning-and-other-air-pollution-sources-china\">Health Effects Institute<\/a> find that coal power contributed to 87,000 premature deaths in China in 2013 so even a small reduction in total emitted pollutants could save hundreds of lives every year, using technology that is already installed.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Emissions reductions are estimated by applying provincial power production to <\/span><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0921344916300945\">region-specific emission factors<\/a>. These take account of extensive efforts made during the 10th and 11th&nbsp;Five-Year Plan periods to reduce particulate and sulphur dioxide (SO2) emissions from power plants, but not the control measures for nitrogen oxides (NOX) such as smog-inducing nitric oxide and nitrogen dioxide introduced in the 12th Five-Year Plan (2011-2015).<\/p>\n<p><strong>Tonnes of PM2.5, NOx and SO2 emissions avoided each year if&nbsp;curtailment was&nbsp;5%<\/strong><br \/>\n<span><img decoding=\"async\" alt=\"\" src=\"https:\/\/chinadialogue-production.s3.amazonaws.com\/uploads\/content_image\/content_image\/2499\/Screen_Shot_2017-04-10_at_15.55.43.png\" style=\"width: 560px; height: 99px;\"><\/span><\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Getting to a 5% curtailment rate in Gansu would mean saving emissions corresponding to 18% of the emissions from coal power plants in the province in 2016.<\/span><\/p>\n<p>For Xinjiang, it would represent a 9% saving, and in Inner Mongolia 3%. The avoided NOX emissions combined correspond to taking about 50 million cars off the streets.<\/p>\n<p><strong><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Avoided emissions if renewables curtailment was 5%, expressed as a share of coal power plant emissions<\/span><\/strong><\/p>\n<p dir=\"ltr\"><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\"><img decoding=\"async\" src=\"https:\/\/chinadialogue-production.s3.amazonaws.com\/uploads\/content_image\/content_image\/2399\/Screen_Shot_2017-03-24_at_14.25.18.png\" style=\"border: none; width: 519px; height: 310px;\"><\/span><br \/>\n<span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">\u200b<br \/>\nRenewables will play a more prominent role in Chinese energy production, making the ability to integrate this production into the grid increasingly important.<\/span><\/p>\n<p>In just a few years, China plans to double its share of wind power to six percent of total generation capacity. Wind and solar combined will make up eight percent of total generation capacity in 2020.<\/p>\n<p>But the impact of renewable energy on air quality will depend on policymakers\u2019 plans and actions to reach the 2020 target of five percent curtailment.<\/p>\n<p>China has made progress improving its air quality, with pollutant concentrations in cities on a downward trend.<\/p>\n<p>Nonetheless, at the <a href=\"https:\/\/energydesk.greenpeace.org\/2017\/01\/17\/china-cities-air-pollution-legal-limits-rankings\/\">current rate of improvement<\/a>, it will take 23 years for Lanzhou, the capital of Gansu province, to meet the WHO\u2019s standards for PM2.5 concentration. Xinjiang\u2019s capital city Urumqi would need to wait 30 years, and the Inner Mongolian capital, Hohhot, 12 years.<\/p>\n<p><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">Reducing renewable energy curtailment would help accelerate progress. Making sure that variable renewables such as wind and solar are efficiently integrated into the grid is a crucial step if China is to realise its air pollution targets and make the skies blue again.<\/span><\/p>\n<p><em><span id=\"docs-internal-guid-ccccfdab-5859-a482-9326-02775b9729c0\">A different version of this blog can be found at the <\/span><a href=\"https:\/\/www.raponline.org\/blog\/reducing-renewables-curtailment-china-air-quality-measure\/\">Regulatory Assistance Project<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Better use of renewables could reduce air pollutants. And\u00a0with technology that\u2019s already been paid for, writes Sara Shapiro-Bengtsen<\/p>\n","protected":false},"author":2744,"featured_media":59423,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[757,760],"tags":[585],"hashtags":[],"country":[],"class_list":["post-34695","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energy","category-pollution","tag-renewables"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Wasting less renewable energy could boost China\u2019s air quality | Dialogue Earth<\/title>\n<meta name=\"description\" content=\"Better use of renewables could reduce air pollutants. 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