{"id":16247,"date":"2017-08-30T10:17:16","date_gmt":"2017-08-30T14:17:16","guid":{"rendered":"http:\/\/blogs.edf.org\/energyexchange\/?p=16247"},"modified":"2017-08-30T11:18:20","modified_gmt":"2017-08-30T15:18:20","slug":"californias-new-methane-leakage-requirements-for-gas-utilities-are-already-delivering-benefits","status":"publish","type":"post","link":"https:\/\/blogs.edf.org\/energyexchange\/2017\/08\/30\/californias-new-methane-leakage-requirements-for-gas-utilities-are-already-delivering-benefits\/","title":{"rendered":"California\u2019s new methane leakage requirements for gas utilities are already delivering benefits"},"content":{"rendered":"<p><i>EDF Schneider fellow Scott Roycroft co-authored this post<\/i><\/p>\n<p>California\u2019s gas utilities have had their share of problems in recent years \u2013 so improvements in environmental impacts, operations, and safety are important to track.<\/p>\n<p>In 2014, the California legislature <a href=\"https:\/\/leginfo.legislature.ca.gov\/faces\/billNavClient.xhtml?bill_id=201320140SB1371\">passed a law<\/a> to require utility companies to publicly disclose data on gas leaks and emissions while working to actually cut those emissions.\u00a0 Now, three years later, utility reporting has been standardized, an emissions trend has emerged, and the results are significant.<\/p>\n<figure id=\"attachment_16248\" aria-describedby=\"caption-attachment-16248\" style=\"width: 591px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16248 size-full\" src=\"https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/CAutility-emissions.png\" alt=\"\" width=\"591\" height=\"291\" srcset=\"https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/CAutility-emissions.png 591w, https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/CAutility-emissions-300x148.png 300w\" sizes=\"auto, (max-width: 591px) 100vw, 591px\" \/><figcaption id=\"caption-attachment-16248\" class=\"wp-caption-text\">Graphic 1: A depiction of the volume of methane emissions from California utilities between 2015 and 2016. Emissions from the Aliso Canyon blowout are shown as a separate category.<\/figcaption><\/figure>\n<p><!--more--><\/p>\n<p>According to the emissions data, from 2015 to 2016, both <a href=\"https:\/\/pgera.azurewebsites.net\/Regulation\/search\">Pacific Gas and Electric Company <\/a>(PG&amp;E) and <a href=\"https:\/\/www.socalgas.com\/regulatory\/R1501008.shtml\">Southern California Gas Company<\/a> (SoCalGas) have shown a reduction in their total annual emissions of leaked and vented gas. \u00a0PG&amp;E was in front, with an 11% reduction of natural gas methane emissions, while SoCalGas &#8212; the nation\u2019s largest utility &#8212; reduced its emissions by 3%. Together \u2013 the reduction in emissions from these two utilities is equal to nearly 700,000 metric tons of CO2e on a 20 year basis.<\/p>\n<p>Even with the reductions though, there is still much room for improvement. Overall, if you exclude emissions from the Aliso Canyon blowout, natural gas utilities across California emitted about 6.2 billion cubic feet of methane &#8212; enough to provide natural gas to over 165,000 homes in California for the year. This is gas that customers paid for but is never delivered \u2013 also referred to as<a href=\"https:\/\/blogs.edf.org\/energyexchange\/2016\/08\/04\/getting-a-better-handle-on-lost-and-unaccounted-for-gas\/\"> Lost and Unaccounted for Gas<\/a>. The top three sources of emissions are customer meter leaks, distribution pipeline leaks, and distribution station leaks. Together, these three sources comprise 73% of total statewide utility emissions \u2013 and each have solutions to reduce their pollution.<\/p>\n<figure id=\"attachment_16249\" aria-describedby=\"caption-attachment-16249\" style=\"width: 755px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16249\" src=\"https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/2016cautilityemissionsbysystem.png\" alt=\"\" width=\"755\" height=\"662\" srcset=\"https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/2016cautilityemissionsbysystem.png 755w, https:\/\/blogs.edf.org\/energyexchange\/wp-content\/blogs.dir\/38\/files\/2017\/08\/2016cautilityemissionsbysystem-300x263.png 300w\" sizes=\"auto, (max-width: 755px) 100vw, 755px\" \/><figcaption id=\"caption-attachment-16249\" class=\"wp-caption-text\">Graphic 2: A depiction of the source categories of methane emissions from California utilities in 2016. Note: emissions from the Aliso Canyon blowout are not included in this analysis.<\/figcaption><\/figure>\n<p><strong>A red flag on Grade 3 pipeline leaks <\/strong><\/p>\n<p>About a quarter of the state\u2019s natural gas emissions from utility systems come from distribution pipelines \u2013 and more than half of pipeline leaks are what companies classify as \u201cGrade 3\u201d leaks.\u00a0 Reason being: since Grade 3 leaks are technically non-hazardous, until now companies have not been required to repair them, regardless of size.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"125\"><strong>Leak Age (in years)<\/strong><\/td>\n<td width=\"125\"><strong>Less than 5<\/strong><\/td>\n<td width=\"125\"><strong>5-10<\/strong><\/td>\n<td width=\"125\"><strong>10-20<\/strong><\/td>\n<td width=\"125\"><strong>20+<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"125\">Total Leaks<\/td>\n<td width=\"125\">18,333<\/td>\n<td width=\"125\">2,279<\/td>\n<td width=\"125\">468<\/td>\n<td width=\"125\">51<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>Looking at discovery dates for Grade 3 leaks shows just how long companies often take to repair these leaks; according to the data some of these leaks were discovered in the late 1980\u2019s and still have not been repaired. Although some utilities have implied they are committed to repairing these older leaks, real and sustained action is needed to ensure continued abatement of all Grade 3 leaks \u2013 action which is required in the state\u2019s <a href=\"https:\/\/www.edf.org\/media\/california-requires-utilities-reduce-climate-pollution-pipelines\">new leakage abatement program<\/a>.<\/p>\n<p><strong>Leak information can be correlated to pipeline materials<\/strong><\/p>\n<p>Public utility companies keep detailed records of leaks they discover, including date of discovery, geographic location, pipeline material, and pipeline pressure. With the new reporting by utilities, the public has access to information on <a href=\"https:\/\/www.edf.org\/climate\/methanemaps\">how leakage correlates to pipe material<\/a> (for example, older cast iron pipes are more leak prone than newer plastic pipes) and other qualities.<\/p>\n<p><strong>New technologies find greater number of gas leaks<\/strong><\/p>\n<p>The data also reveals that some technologies are more effective than others at finding a greater number of gas leaks. PG&amp;E uses <a href=\"http:\/\/www.pgecurrents.com\/2016\/10\/20\/video-pges-commitment-to-environment-includes-reducing-methane\/\">advanced leak detection technology<\/a> to locate a large number of Grade 3 leaks, whereas other utilities do not. This partially explains why PG&amp;E is registering more leaks on its system today than in prior years and also likely part of why they may be experiencing larger emission reductions than others. According to <a href=\"https:\/\/blogs.edf.org\/energyexchange\/2016\/09\/06\/new-technologies-deliver-data-that-can-make-gas-pipelines-safer\/\">recent analyses<\/a>, leak discovery is expected to increase in coming years as these technologies are more widely adopted.<\/p>\n<p><strong>What can be learned from California\u2019s leak data <\/strong><\/p>\n<p>Requiring companies to report gas leaks has been instrumental in increasing transparency and sheds valuable insights on the tools and practices that can deliver the biggest emission reductions. And it helps utility customers and consumer advocates learn more about the gas that customers pay for but is emitted into the atmosphere.<\/p>\n<p>As a result of this data, in June 2017 the California Public Utilities Commission (CPUC) started <a href=\"http:\/\/docs.cpuc.ca.gov\/PublishedDocs\/Published\/G000\/M190\/K740\/190740714.PDF\">requiring companies<\/a> to begin the implementation of 26 best practices for reducing emissions \u2013 including targeting and scheduling Grade 3 leaks for repair. Once these practices are fully implemented, utilities are expected to reduce methane emissions by 40% by the year 2030.<\/p>\n<p>It\u2019s clear that better leak reporting is a critical part of reducing natural gas emissions. By requiring companies to disclose leak data California is once again demonstrating what climate change leadership looks like and setting a powerful example that other states can follow.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>EDF Schneider fellow Scott Roycroft co-authored this post California\u2019s gas utilities have had their share of problems in recent years \u2013 so improvements in environmental impacts, operations, and safety are important to track. In 2014, the California legislature passed a law to require utility companies to publicly disclose data on gas leaks and emissions while &#8230;<\/p>\n","protected":false},"author":120464,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[200,439,97888,55717,693],"tags":[],"coauthors":[],"class_list":["post-16247","post","type-post","status-publish","format-standard","hentry","category-california","category-climate","category-data-access","category-methane-2","category-natural-gas"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>California\u2019s new methane leakage requirements for gas utilities are already delivering benefits - Energy Exchange<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.edf.org\/energyexchange\/2017\/08\/30\/californias-new-methane-leakage-requirements-for-gas-utilities-are-already-delivering-benefits\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"California\u2019s new methane leakage requirements for gas utilities are already delivering benefits - Energy Exchange\" \/>\n<meta property=\"og:description\" content=\"EDF Schneider fellow Scott Roycroft co-authored this post California\u2019s gas utilities have had their share of problems in recent years \u2013 so improvements in environmental impacts, operations, and safety are important to track. 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