{"id":53515,"date":"2021-09-13T11:26:25","date_gmt":"2021-09-13T00:56:25","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=53515"},"modified":"2021-09-13T11:26:25","modified_gmt":"2021-09-13T00:56:25","slug":"states-renewables-electricity-prices","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/","title":{"rendered":"States With The Most Renewables Have The Cheapest Wholesale Electricity"},"content":{"rendered":"<p><img decoding=\"async\" class=\"aligncenter wp-image-53888 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/states-low-elec.jpg\" alt=\"Renewable energy in Australia and wholesale electricity prices\" width=\"1200\" height=\"628\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/states-low-elec.jpg 1200w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/states-low-elec-300x157.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/states-low-elec-1024x536.jpg 1024w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/states-low-elec-768x402.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\r\n<p>Wholesale electricity spot prices in the two Australian states with the most renewable energy generation &#8212; South Australia and Tasmania &#8212; are the lowest in the nation and have been for years.\u00a0 This is good news for anyone who prefers clean energy over dirty. That is everyone who isn&#8217;t evil, an idiot, or both.<!--more--><\/p>\r\n<p>As a percentage of total electricity consumption, over the past year:\u00a0<\/p>\r\n<ul>\r\n<li>South Australia generated 63% renewable electricity<\/li>\r\n<li>Tasmania generated 98% renewable electricity<\/li>\r\n<\/ul>\r\n<p>The next most renewable state was Victoria at 27%.\u00a0 Clearly, the rest of Australia has a long way to go.<\/p>\r\n<p>SA and TAS have had the lowest average wholesale electricity spot prices &#8212; what large generators are paid when they sell energy in the wholesale electricity market\u00a0 &#8212; for the past two financial years, 2019\/20 and 2020\/21.<\/p>\r\n<p>While Tasmania didn&#8217;t have the lowest cost wholesale electricity in the nation for the 2018\/19 financial year, if we take today as the starting point, Tasmania has averaged the lowest average for well over three years.\u00a0 If we do the same for South Australia, it&#8217;s averaged the lowest on the mainland for close to three years.\u00a0<\/p>\r\n<p>This makes me happy for reasons unrelated to how fat people are naturally jolly.\u00a0 Low wholesale electricity prices in high renewable states are good because&#8230;<\/p>\r\n<ul>\r\n<li>It reduces the cost of electricity in those states<sup class='endnote'><a href='https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/#en-53515-1' id='enref-53515-1' onclick='return hhEndnotes_show(53515)'>1<\/a><\/sup>.\u00a0 This means people will have more money to spend on chocolate &#8212; as well as other, less important, things.<\/li>\r\n<li>SA and Tasmania trade electricity through interconnectors, so it lowers the cost of electricity in other states &#8212; but not WA. We don&#8217;t have an extension cord that long.<\/li>\r\n<li>Low wholesale electricity prices are driving fossil fuel based energy generation out of the market.\u00a0 This improves our health through better air quality and the planet&#8217;s health by reducing greenhouse gas emissions.<\/li>\r\n<li>It helps shut up annoying people who claim that renewable energy is too expensive or that baseload generators like coal are required.<\/li>\r\n<\/ul>\r\n<h2>Renewable Energy Generation In Eastern States<\/h2>\r\n<p>Here are the percentages as a graph:<sup class='endnote'><a href='https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/#en-53515-2' id='enref-53515-2' onclick='return hhEndnotes_show(53515)'>2<\/a><\/sup><\/p>\r\n<div id=\"attachment_53837\" style=\"width: 964px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-53837\" class=\"wp-image-53837 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa1.png\" alt=\"Renewable energy - total grid consumption in Australia\" width=\"954\" height=\"558\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa1.png 954w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa1-300x175.png 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa1-768x449.png 768w\" sizes=\"(max-width: 954px) 100vw, 954px\" \/><p id=\"caption-attachment-53837\" class=\"wp-caption-text\">These figures are taken from <a href=\"https:\/\/opennem.org.au\/\" target=\"_blank\" rel=\"noopener\">OpenNEM<\/a>. When I worked it out, I got 63% for SA rather than their 62%, but my figure included clean energy imports from Victoria.\u00a0 When comparing states, it makes sense not to include clean imports to avoid doubling counting.<\/p><\/div>\r\n<p>As the graphs show, Tasmania and South Australia are way ahead.\u00a0<\/p>\r\n<p>Here&#8217;s a graph showing wholesale electricity prices in each of these states over the past five financial years:<\/p>\r\n<div id=\"attachment_53842\" style=\"width: 963px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-53842\" class=\"wp-image-53842 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa2.png\" alt=\"Average wholesale electricity spot price - Australia\" width=\"953\" height=\"557\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa2.png 953w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa2-300x175.png 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa2-768x449.png 768w\" sizes=\"(max-width: 953px) 100vw, 953px\" \/><p id=\"caption-attachment-53842\" class=\"wp-caption-text\">Average wholesale electricity prices are from the <a href=\"https:\/\/aemo.com.au\/Energy-systems\/Electricity\/National-Electricity-Market-NEM\/Data-NEM\/Data-Dashboard-NEM\" target=\"_blank\" rel=\"noopener\">AEMO<\/a>.<\/p><\/div>\r\n<p>In Victoria, wholesale prices show a rise followed by a fall.\u00a0 This was mostly due to the unexpected closure of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Hazelwood_Power_Station\" target=\"_blank\" rel=\"noopener\">Hazelwood Power Station<\/a> in March 2017 with only five months warning<sup class='endnote'><a href='https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/#en-53515-3' id='enref-53515-3' onclick='return hhEndnotes_show(53515)'>3<\/a><\/sup>.\u00a0 Victoria normally has low wholesale electricity prices, so the decrease over the past few years has, to a large extent, been a return to normal as new renewable generation and energy storage &#8212; along with reduced demand &#8212; has lowered prices.<\/p>\r\n<h2>Renewables Pushing Down Prices<\/h2>\r\n<p>While it has been most obvious in South Australia and Tasmania, clean energy has lowered the cost of electricity across the country.\u00a0 Wind and solar energy generation push down prices because:<\/p>\r\n<ul>\r\n<li>It is now cheaper to build a combination of solar, wind, and energy storage than to build new coal and natural gas power plants. \u00a0<\/li>\r\n<li>Wind and solar power have running costs close to zero, and their fuel is free.\u00a0 This makes it profitable for them to continue producing electricity even if they can only sell it for a fraction of a cent per kilowatt-hour. On the other hand, coal and gas generators want to shut down &#8212; <a href=\"https:\/\/www.solarquotes.com.au\/blog\/inflexible-fossil-fuels\/\">if possible<\/a> &#8212; when their running costs, including fuel, are higher than wholesale electricity prices.\u00a0\u00a0<\/li>\r\n<li>Because wind and solar energy output depends on how much light and wind there is, their generation can be high when electricity demand is low.\u00a0 This can result in long periods of low wholesale electricity prices.<\/li>\r\n<\/ul>\r\n<p>Because hydroelectric power is dispatchable and can be switched on and off at will, it&#8217;s normally used like gas generation and supplies power when electricity prices are high and shuts down when they are low.\u00a0 But when there&#8217;s plenty of rain, they can enter a &#8220;use it or lose it&#8221; situation and push down wholesale prices in a way similar to solar and wind.\u00a0 This rarely happens on the mainland, but sometimes occurs in Tasmania.\u00a0<\/p>\r\n<p>This graph shows renewable energy generation by source as a percentage of each eastern state&#8217;s total consumption:<\/p>\r\n<p><img decoding=\"async\" class=\"aligncenter wp-image-53872 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa6.png\" alt=\"Renewable energy mix - Australian states\" width=\"950\" height=\"562\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa6.png 950w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa6-300x177.png 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa6-768x454.png 768w\" sizes=\"(max-width: 950px) 100vw, 950px\" \/><\/p>\r\n<p>All the suitable locations for conventional hydroelectricity have been used in Australia.\u00a0 There are no remotely economically sensible remaining sites.\u00a0 This means no state can increase its hydroelectric capacity to become like Tasmania, but they can and will increase their wind and solar power capacity to become more like South Australia.\u00a0 This means they will all have large amounts of non-dispatchable generation.<\/p>\r\n<h2>SA Leads The Way<\/h2>\r\n<p>South Australia&#8217;s renewable generation is two-thirds wind and one-third solar power, with 75% of its solar energy generation coming from rooftops.\u00a0 It has the most non-hydro renewable capacity because it used to have the highest wholesale electricity prices in the nation.\u00a0<\/p>\r\n<p>If you wanted to build a wind farm in Australia, the state with the highest wholesale electricity prices and plenty of wind is the obvious place to start.\u00a0 People are also more inclined to <a href=\"https:\/\/www.solarquotes.com.au\/solar101.html\">install rooftop solar panels<\/a> when living in a sunny state with high electricity prices.\u00a0<\/p>\r\n<p>The reason why SA wholesale prices used to be high was:<\/p>\r\n<ul>\r\n<li>a lack of conveniently located coal deposits<\/li>\r\n<li>moderate electricity demand \u00a0<\/li>\r\n<\/ul>\r\n<p>Now the state is benefiting from building out its renewable energy capacity.\u00a0<\/p>\r\n<p>Other states are following and expanding their solar and wind generation.\u00a0<\/p>\r\n<h2>No Baseload Generators = No Problem<\/h2>\r\n<p>Many people &#8212; mostly idiots &#8212; have a bee in their bonnet about baseload power.\u00a0 Their concern appears to be inversely proportional to how well they understand what they&#8217;re talking about.\u00a0<\/p>\r\n<p><strong>Baseload power<\/strong> is simply the lowest power a grid supplies to homes and businesses over a 24 hour period. \u00a0It used to always occur in the early morning hours before sunrise, but now it often occurs in the middle of the day thanks to rooftop solar.<\/p>\r\n<p><strong>Baseload generators<\/strong> are those that operate as close to 24\/7 as maintenance and <a href=\"https:\/\/www.solarquotes.com.au\/blog\/callide-power-station-mb2011\/\">breakdowns<\/a> allow.\u00a0\u00a0<\/p>\r\n<p>Australia&#8217;s baseload generators are coal power stations.\u00a0 Fossil fools who support coal power often claim baseload generators are required to provide stability to the grid.\u00a0 Except instead of baseload generators, they usually say &#8220;baseload power&#8221; or just &#8220;baseload&#8221;, which isn&#8217;t what they&#8217;re actually talking about.\u00a0<\/p>\r\n<p>They claim baseload generators are necessary for the grid to reliably operate and for heavy industries such as aluminium smelting, but South Australia shows this is obviously untrue as the state has no non-stop baseload generators. \u00a0It trades electricity with Victoria &#8212; a state with coal baseload generators &#8212; but does not import electricity 24\/7.\u00a0 SA is happy to spend days either importing nothing or next to nothing.\u00a0<\/p>\r\n<p>Baseload generators also aren&#8217;t required for heavy industry. Suppose someone wanted to open a new aluminium smelter<sup class='endnote'><a href='https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/#en-53515-4' id='enref-53515-4' onclick='return hhEndnotes_show(53515)'>4<\/a><\/sup>, then South Australia would have been the cheapest mainland location in terms of wholesale electricity spot prices for the past two financial years.\u00a0 What heavy industry actually pays for electricity is usually determined by long term contracts rather than wholesale electricity spot prices, but South Australia is now in the running to provide these at the lowest cost outside of Tasmania.\u00a0<\/p>\r\n<h2>Australia Will Be A Low Wholesale Electricity Price Nation<\/h2>\r\n<p>In the 20th century, Australia had some of the lowest generation costs in the world on account of cheap coal combined with a reckless disregard for the nation&#8217;s and planet&#8217;s health.\u00a0<\/p>\r\n<p>These days of low wholesale electricity prices are on the way back without the death and destruction.\u00a0 As other states put more solar panels on roofs and in solar farms, and construct more wind farms, their average wholesale electricity prices will head into permanently low territory as well.\u00a0<\/p>\r\n<p>There&#8217;s no guarantee South Australia will keep its first-place position for the lowest average wholesale electricity prices on the mainland.\u00a0 Other states may be able to beat it as coal is driven from the market and they increase the rate renewable energy capacity is built.\u00a0 But each time a coal power station is shut, there will be a spike in wholesale electricity prices until enough new clean generating capacity and energy storage is built to compensate.\u00a0 South Australia got rid of its coal generation <a href=\"https:\/\/www.solarquotes.com.au\/blog\/coal-power-eliminated-south-australia-help-rooftop-solar\/\">years ago<\/a> and that is going to help.<\/p>\r\n<p>Australia&#8217;s excellent solar and wind resources give us an advantage over most countries, but perhaps we shouldn&#8217;t get too excited over that, as no one gave a toss about our low generation costs last century.\u00a0 The only real difference it made was we got a few aluminium smelters.\u00a0 But considering we live in an age where electricity interconnectors can be <a href=\"https:\/\/www.solarquotes.com.au\/blog\/sun-cable-survey-mb1539\/\">run between continents<\/a>, it may amount to more of an advantage this time around.<\/p>\r\n<p>&nbsp;<\/p>\r\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-53864\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa5.jpg\" alt=\"\" width=\"636\" height=\"633\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa5.jpg 636w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa5-300x300.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa5-150x150.jpg 150w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/09\/sa5-100x100.jpg 100w\" sizes=\"(max-width: 636px) 100vw, 636px\" \/><\/p>\r\n\n\n","protected":false},"excerpt":{"rendered":"<p>Wholesale electricity spot prices in the two Australian states with the most renewable energy generation &#8212; South Australia and Tasmania &#8212; are the lowest in the nation and have been for years.\u00a0 This is good news for anyone who prefers clean energy over dirty. That is everyone who isn&#8217;t evil, an idiot, or both.<\/p>\n","protected":false},"author":10,"featured_media":53888,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[636],"tags":[],"class_list":["post-53515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electricity-prices","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>States With Most Renewables Have Cheapest Wholesale Electricity<\/title>\n<meta name=\"description\" content=\"Discover why Australian states with the most renewable energy generation have had the lowest wholesale electricity prices for 2 years running\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"States With The Most Renewables Have The Cheapest Wholesale Electricity\" \/>\n<meta property=\"og:description\" content=\"Discover why Australian states with the most renewable energy generation have had the lowest wholesale electricity prices for 2 years running\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solarquotes.com.au\/blog\/states-renewables-electricity-prices\/\" \/>\n<meta property=\"og:site_name\" content=\"SolarQuotes Blog\" \/>\n<meta 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