I'm not sure where this vote is going to go. There's sure to be some dissent over the details of how utilities plan to meet energy demand, and costs. But 2 of the 5 commissioners support it, meaning they need just one more vote.
Of the other 3 commissioners, @BoydDunnAZ has supported increasing renewables, and this could be his last chance to approve it before leaving office. @LeaPeterson has been hesitant to vote for an increase, but faces an election this year, and @_JustinOlson has been opposed.
Utility regulators have begun what's sure to be a marathon meeting today over requiring utilities to get 100% of their energy from carbon-free sources. Follow live here if you have nothing going on for the next dozen hours https://www.azcc.gov/live 
We're zooming along here with the 6th public comment on the new energy rules. All support what they are calling the "BK amendment" and I'm realizing I could have written my story a few inches longer if I'd have shortened "Burns-Kennedy" like that.
Now hearing from a representative of @scottsdaleazgov energy-efficiency programs. She is concerned the @CorpCommAZ staff did not propose any new efficiency programs, but the "BK" amendment solves that.
Free Enterprise Club director @ScotMussi filed opposition to the clean-energy targets through the office of commissioner @_JustinOlson, arguing natural gas should continue to be used in Arizona. https://docket.images.azcc.gov/E000007906.pdf 
So, safe bet that Mussi's letter doesn't carry any weight for @rburnsazt or @SandraDKennedy. Like everything today, the question is whether it is meaningful to @BoydDunnAZ and @LeaPeterson.
Continuing to try and read the tea leaves here, @LeaPeterson has proposed an amendment that utilities face a requirement to get 100% carbon free energy by 2050 but without a specific requirement for renewables. https://docket.images.azcc.gov/E000007902.pdf  Sounds like she's not on board with BK.
RUCO director @JordyFuentesAZ takes the mic, criticizes clean-energy advocates who have spoken so far, says they are wrong about AZ falling behind on renewables, and questions whether these groups are really not all being funded by the same source.
I've seen @JordyFuentesAZ speak at many rate cases where utilities are seeking rate hikes and can say with confidence I've never heard him nearly as emotional as he is today as he tries to discourage the clean-energy rules being proposed.
Speaking now is @petroleum_inc, saying it would be unfair if natural-gas burning power plants couldn't compete with solar/wind because of clean-energy mandates.
Wow, drama. Commission staff says it can't support the BK amendment. Utility director for the regulators says @SandraDKennedy, @_JustinOlson and @LeaPeterson won't have to deal with rate increases, while @rburnsazt won't because he'll be out of office.
Both @JordyFuentesAZ and the @CorpCommAZ staff have held out the Solana solar plant near Gila Bend as a bad investment @APSfyi had to make to comply with the existing renewable-energy rules. Solana has definitely had some issues, including cost, but (cont)
APS was so giddy to brag about Solana when it was being built that the CEO slipped and leaked the price of the power-purchase agreement to the NYTimes. It was a major source of pride for the state, governor, utility. Years later, solar pv prices fell far below Solana.
Now some shade. @SandraDKennedy asks the staff director who opposes her amendment if he had the best interests of utility customers in mind when he settled the @apsfyi rate case in '17 (which continues to cause headaches today with its challenging rates).
It sounded like she was continuing to question staff but her phone connection was glitchy and now they have taken lunch break until 1:30.
Facing opposition to their proposal, @rburnsazt and @SandraDKennedy withdraw their amendment for a more aggressive renewable/clean/carbon-free energy plan. Call recess in meeting until 2:30 now.
Commissioner @BoydDunnAZ said he was troubled by the BK proposal because he didn't have time to go out and talk to stakeholders, which he misstated as "shareholders" at one point (Freudian slip?).
And just like that, I lose several bets regarding how late this meeting would go as Chairman @rburnsazt adjourns the meeting because commissioners all appeared to not be on the same page.
To recap: Arizona utility regulators were poised to vote on a historic boost to clean-energy requirements, but didn't when they realized they all disagreed on details of the plans.
Arizona utility regulators now debriefing on this renewable-energy meeting that was deadlocked last week. Now all commissioners say they want to move forward. They mostly agree on need to change energy rules. Working on dates to reconvene.
Well, after about two months to lay out their respective positions, Arizona's utility regulators are back at it today in hopes of revamping/possibly boosting the renewable or "clean" energy requirements for utilities in the Grand Canyon State. (thread continued from July)
After a presentation from @ASUgreen regarding the importance of solar to conserve water, commissioners are pitching their individual proposals. 4/5 regulators wants to increase the standards but they deadlocked on details two months ago.
Kicking off is @LeaPeterson who proposes a carbon-free standard rather than a renewable-energy standard, and she wants to give electric companies an extra decade to get there vs. a plan from @SandraDKennedy
If you're into glitchy webcasts that dig deep in the weeds of how much solar, wind, nuclear, biomass, efficiency, etc. is used to power your air conditioner, the webcast is available here https://azcc.gov/live 
Arizona's Residential Utility Consumer Office was created to stand up for customers. @dougducey appointed the current director, who just spoke for 6.5 minutes about concerns with new clean energy rules without 1 time mentioning utility customers, ratepayers, consumers, etc.
Public comment now from a woman who says using more renewables in Arizona will limit her freedom. Chairman cuts her off for not focusing on actual proposals before them.
Followed immediately by the lawyer for the Western States Petroleum Association (natural gas companies) who, shocker here, don't like a 100% clean energy requirement, ever. They like one proposal from @LeaPeterson and one from @_JustinOlson
Sierra Club director for Arizona @SLBahr "This rule package is more urgent than ever because of the urgency of the climate crisis." Says she's seeing bipartisan interest in taking action. Short-term carbon cuts crucial because of cumulative ghg effect.
Commission breaks for lunch until 1 p.m. Chairman notes they are a little behind schedule. I'd say cancel dinner plans if you are committed to knowing the final vote today.
Regulators back at it, now reviewing proposals from @_JustinOlson, who opposes renewable energy requirements generally. He says his "common sense" ideas focus on cost-effective energy plans and that renewables will win because they are most cost effective.
Olson says utilities could have waited until today to invest in renewable energy and it would cost less than the power from wind/solar purchased over the last 14 years. Kinda misses the reason why those prices are lower today, which is due in large part to state requirements.
Commissioner @SandraDKennedy favors hard requirements today and not "kicking the can down the road" on boosting renewables.
Two months ago I thought that having 4 commissioners agree in general that more clean energy was advisable would mean a vote increasing the state standard. I was wrong. Today, it's looking like they are going to vote on this, but, I've been wrong before.
Chairman @rburnsazt favors increasing renewable standards: "I’m prepared to support whatever standards we can get three votes on." Says he needs a few things included, including requirements for residential batteries, but nothing that seems like a dealbreaker for Kennedy, Dunn.
Regulators in a deep dive on who should be allowed to review/approve/OK a resource plan for utilities as they lay out strategy to meet the renewable energy requirements being considered today.
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