• New Discovery Could Improve Organic Solar Cell Performance

    While there is a growing market for organic solar cells ­­– they contain materials that are cheaper, more abundant, and more environmentally friendly than those used in typical solar panels – they also tend to be less efficient in converting sunlight to electricity than conventional solar cells. Now, scientists who are members of the Center for Computational Study of Excited-State Phenomena in Energy Materials (C2SEPEM) a new Read More
  • Know Your Rights

    Arizona law protects individual homeowners’ private property rights to solar access by dissolving any local covenant, restriction or condition attached to a property deed that restricts the use of solar energy. This law sustained a legal challenge in 2000. A Maricopa County Superior Court judge ruled in favor of homeowners in a lawsuit filed by their homeowners association seeking to force the homeowners to remove Read More
  • Home Battery Systems

    Rooftop solar panels are common in Arizona thanks to abundant sunshine, but to get even more use from the technology, homeowners are beginning to pair them with large home batteries. Batteries allow homeowners to store their surplus electricity, rather than send it to the grid in exchange for credit from their electric company. Read More
  • Solar Hot Water

    There are two types of solar water heating systems: active, which have circulating pumps and controls, and passive, which don't. The typical solar water heater is comprised of solar collectors and a well-insulated storage tank. The solar collector is a network of pipes that gathers the sun's energy, transforms its radiation into heat, and then transfers that heat to either water or a heat-transfer fluid. Read More
  • Federal Residential Renewable Energy Tax Credit

    (Information provided by DSIRE - Last reviewed 02/19/2009) The information below is somewhat dated, the incentives have been extended, but reduced.  See our more up to date article. Incentive Type:   Personal Tax Credit State:   Federal Eligible Renewable/Other Technologies:   Solar Water Heat, Photovoltaics, Wind, Fuel Cells, Geothermal Heat Pumps, Other Solar Electric Technologies Applicable Sectors:   Residential Amount:   26% Maximum Incentive:   Solar-electric systems Read More
  • Solar Building Design in Arizona

    The idea of using the sun to meet the energy needs in our buildings has been with us since the time of the Greeks, with some of the design manifestations even evident in the prehistoric structures of Arizona and the Southwest. There is a great historic tradition for Arizona buildings that utilize our most abundant resource, and the current increases in The idea of using Read More
  • How Not to- Battery Connections

    Photo shows the situation after a battery discharge test at 300 amps was terminated on a 1530 AH IBE battery string when one post melted. During the discharge test all cell voltages are logged. The sum of the cell voltages was 2.73 volts lower than the 48-volt string voltage. This is an average of 118 mv per inter-cell connection, 5-10 mv is the normal range Read More
  • 1 New Discovery Could Improve Organic Solar Cell Performance
  • 2 Know Your Rights
  • 3 Home Battery Systems
  • 4 Solar Hot Water
  • 5 Federal Residential Renewable Energy Tax Credit
  • 6 Solar Building Design in Arizona
  • 7 How Not to- Battery Connections

Blogs

  1. Solar Center Blog
Brian Czech
17 February 2019

What’s Really Green and What’s Really New

Ask Americans what the Green New Deal is all about, and you’ll get two basic answers. Most often you’ll hear, “It’s about moving to renewable energy in order to fight climate change.” You’ll also hear, from a camp further right, “It’s all about socialism!”

Lucy Mason
06 January 2018

Wishing you a wonderful and Happy New Year!

The year 2017 has gone by quickly, and AriSEIA has accomplished a full and active agenda to further solar and renewable energy in Arizona. 


Featured (Note- Articles below shift Left-Right)

Some things to pay attention to in Arizona


Arizona Legislature 

Immediate Action Needed: Oppose SCR 1010

A Strike Everything resolution/bill, S.C.R. 1010 was put in motion by Senator Kerr. Per recent reporting by the Arizona Republic, "Proposal would let power customers avoid paying for renewable energy," this measure is a direct attack on renewable energy in Arizona. For more details

Arizona Corporation Commission 

The Arizona Corporation Commission (ACC) has posted STAFF'S THIRD REVISED PROPOSED DRAFT RULES (DOCKET no. RE-00000A-18-0284) That lay out a clearer framework for Electric Utilities to report their compliance with the proposed standards for the Renewable Energy Standard, Clean Peak Standard, Distributed Renewable Storage Requirement, and Electric Vehicle Infrastructure.

See the ACC Staff Report: docket.images.azcc.gov/E000004960.pdf

See also Materials Presented by the Joint Stakeholders at the Commission's March 2020 Energy Rules Workshop

ACC Staff has made substantial changes to the draft rules that were filed on July 2, 2019 based on feedback received at each workshop held in this matter, comments to the docket, and a review of relevant energy policies across the United States.

The Nature Conservancy has submitted their report "Arizona Thrives - A Path to a Healthy and Prosperous Future" to the ACC. Interesting.

APS has submitted their report,  The Solar Center has slightly reformatted this report by rotating the pages for easier viewing.  APS has provided two presentations to address the ACC questions. Worth a read.

The Arizona Corporation Commission (ACC) has released the Notice of Final Rulemaking Interconnection of Distributed Generation FacilitiesInterconnection of Distributed Generation Facilities document.

With this rulemaking, the Commission adds a new Article 26, entitled " Interconnection. of Distributed Generation Facilities" to 14 A.A.C. 2, the Chapter containing the Commission's rules for fixed utilities, with the new Article 26 including 28 new rules. The rules for Interconnection of Distributed Generation Facilities ("DGI Rules") establish mandatory technical standards, processes, and timelines for utilities to use for· interconnection and parallel operation of different types of distributed generation ("DG") facilities; customer and utility rights and responsibilities; provisions for disconnection of DG facilities from the distribution system; specific safety requirements; more flexible standards for electric cooperatives; a reporting requirement; and a requirement for each utility to create, submit for initial approval and submit for approval periodically and when revised, and implement and comply with a Commission-approved Interconnection Manual.

The first dozen pages are basically legal stuff.  The document defines how an utility must review, then accept/reject/etc. an application to connect distributed generation to the utility.  It defines both customer rights and utility procedures.  There are a lot of utility, installer and customer comments along with the ACC staff recomendations. 

 Municipality Info

 

PhoenixFireLogo sm

The City of Phoenix is now (January 2020) requiring a special permit from the Fire Department for most solar systems and batteries.  The fees and required plans varies with size and content.  See this link for an application and details:  https://www.phoenix.gov/firesite/Documents/Solar Photovoltaic OTC Bundle Rev 01-2020.pdf

This is in addition to a building permit from the Planning & Development Department and must be separately obtained at a different address (150 South 12th Street) or on-line via the above link. Also noted is that residential PV permits are no longer over the counter and as of March 2020 are estimated to take 29 working days to process.  Separate inspections are required.

The code requirements are contained in Phoenix-Chapter 12 BESS R-3-1.pdf

Also note: All Phoenix solar building permits are now electronic submittal only. Contact the Electronic Plan Review (EPR) Triage Team at 602-534-5933 or epr.support@phoenix.gov. For more information on EPR, visit us at https://www.phoenix.gov/pdd/onlineservices/electronic-plan-review.

.

Utility Information

 


Arizona Public Service Co. has announced that it plans to produce all of its electricity from carbon-free sources by 2050 and will get 45% of its power from renewable sources like solar and wind by the end of this decade.

This is a good improvement from the point of view of sustainable energy.  There are still a lot of details to be worked out such as the role that distributed energy will take.  Will APS APS improve its policies in regard to residential and small commercial systems.

There are several good news articles and the APS press releases on this announcement:

APS:APS sets course for 100 percent clean energy future

Arizona Republic: APS will eliminate carbon emissions by 2050 and close coal plant ahead of schedule, CEO says

The Washington Post: Arizona’s biggest utility says it will get all of its electricity from carbon-free sources by 2050

 

Interesting Technology Updates;

 

 

 

 


Other Announcements

Dr. Bonnie Eberhardt Bobb, Executive Director of the Western Sustainable Agriculture Working Group, is looking for agriculture producers who are using small solar systems in their operations in Arizona who might be willing to help her with preparing ACC testimony, discussion with representatives, writing letters of support, signing petitions, etc. to further their goal of increased renewables in agriculture. She would love to hear from ag producers and listen to their stories of how solar has benefited their operations. Thank you so much. Please contact drbonnie2002@yahoo.com if you can assist.

Events

Interesting Videos

Walmart Says Tesla’s Solar Panels Caught Fire On Multiple Store Roofs

The retail giant is suing Tesla alleging breach of contract after fires on the roofs of at least seven stores.

Walmart has claimed in a lawsuit that Tesla-supplied solar panels on the roofs at several of its stores caught fire because of the tech company’s “widespread, systemic negligence” and its “failure to live up to industry standards.”

The retail giant is suing Tesla alleging breach of contract after fires on the roofs of at least seven Walmart stores with solar panels installed by Tesla’s solar business. These fires, which occurred at stores in several states from 2012 to 2018, cost Walmart hundreds of thousands of dollars, said the lawsuit, filed Tuesday in a New York court.

To state the obvious, properly designed, installed, inspected, and maintained solar systems do not spontaneously combust, and the occurrence of multiple fires involving Tesla’s solar systems is but one unmistakable sign of negligence by Tesla,” the complaint said, according to CNN Business.

Walmart is seeking damages from Tesla and is demanding the company remove all of its solar panels from its stores. The retailer said that Tesla has installed panels on the roofs of more than 200 of its outlets.

Tesla has not responded to HuffPost’s after-hours request for comment.

The lawsuit comes just days after Tesla founder Elon Musk announced the relaunch of its solar rental business. The move, according to TechCrunch, appears to be an attempt by Tesla to revive the “flagging fortunes” of its renewable energy business, which has steadily been losing market share in recent years.

As Reuters noted, the Walmart lawsuit isn’t the only fire-related problem currently affecting Tesla.

The company is also being probed by the National Transportation Safety Board following several deadly accidents involving Tesla Model X and Model S cars that burst into flames.

From CNN

In recent years, Walmart (WMT) installed solar panels from Tesla Energy Operations on the more than 240 stores across the country. The two companies agreed that Walmart would lease or license its roof space to Tesla (TSLA) for the solar panels in exchange for lower energy costs, and Tesla would retain ownership of the panels and handle their maintenance, the filing states. It details fires at seven stores across the country, which Walmart contends all originated in Tesla solar panels and cost the retailer millions in repairs.

 Elon Musk sets bold goals. But has he delivered?

"To state the obvious, properly designed, installed, inspected, and maintained solar systems do not spontaneously combust, and the occurrence of multiple fires involving Tesla's solar systems is but one unmistakable sign of negligence by Tesla," the complaint states.

Walmart alleges that as of November 2018, seven stores had experienced fires as a result of the solar panels, with the first occurring in 2012 in Long Beach, California.


One fire, in March 2018 at a store in Beavercreek, Ohio, caused a large amount of black smoke, forcing employees and customers in the Walmart and in nearby stores to evacuate, the filing states. Walmart said the fire destroyed "significant amounts" of store merchandise, requiring thousands of dollars in replacements as well as building repairs, and the store had to close for eight days.

Walmart says two other, similar fires occurred during that month, after which point it asked Tesla to disconnect the solar panels out of fear "for the safety of its customers, its employees and the general public."

Tesla complied, but another fire occurred even after the panels were disconnected, Walmart claims. The complaint also states that Tesla's own inspections of the solar panel systems installed on Walmart roofs identified some "unsafe or potentially unsafe" conditions."

Walmart said no one was seriously injured in any of the fires.

 

legal doc

87. Many of the Tesla solar panels inspected by Walmart were suffering from
hotspots, resulting in cracking of the back sheets on solar modules and compromising electrical
insulation. This condition compounded the danger and substantially heightened the risk of fire:
the hotspots reflected an excessive build-up of heat in the solar modules, which in turn wore
down the insulation that was designed to keep electrical currents flowing within their proper
paths and to separate electric conductors from their surrounding materials. These conditions can
readily lead to electrical fires capable of spreading across an entire rooftop.

Slash//

On Friday, Amazon.com Inc. said a June 2018 blaze on the roof of one of its warehouses in Redlands, California, involved a solar panel system that Tesla's SolarCity division had installed. The Seattle-based retail giant said by email that it has since taken steps to protect its facilities and has no plans to install more Tesla systems. Tesla didn't immediately respond to a request for comment, but said earlier on Friday that it had discovered flaws in a part that the company had used in some of its systems. The part known as a "connector," manufactured by Amphenol Corp., led to "failures and disconnections at a higher rate than our standards allow," Tesla said in an emailed statement. The company has worked to replace it. 11 Amazon sites are generating energy and are monitored and maintained.

 

also a home problem

https://www.facebook.com/dave.burek/posts/10101061232214385

https://www.businessinsider.com/tesla-solar-panel-fires-become-nightmare-some-homeowners-2019-10

 https://pv-magazine-usa.com/2019/10/29/navy-engineer-wants-infrared-scanning-and-disciplined-data-as-solar-power-standards/

11-5-19

Walmart has dropped a lawsuit that accused Tesla of breach of contract and gross negligence after rooftop solar panel systems on seven of the retailer's stores allegedly caught fire. TechCrunch reports:
A settlement has been reached and stipulation of dismissal has been filed with the court, a Walmart spokesperson said in an email. It is unclear what the settlement entails. TechCrunch has requested more information and will update the article if new details emerge. The two companies issued a joint release Tuesday announcing that the issues raised by Walmart have been resolved. "Safety is a top priority for each company and with the concerns being addressed, we both look forward to a safe re-energization of our sustainable energy systems," the emailed statement reads.

Walmart said it sued Tesla after years of gross negligence and failure to live up to industry standards by Tesla, according to court documents. Walmart asked Tesla to remove solar panels from all 240 locations where they have been installed, as well as pay for damages related to fires that the retailer alleges stem from the panels. The lawsuit points to several fires on the retailer's rooftops that allegedly stem from Tesla solar panels.

 

 

 

Arizona’s Salt River Project Utility Challenged On High Rooftop Solar Rates

In 2015 SRP became anti-solar when it adopted special solar rates (E27) with some high demand charges, etc.  SolarCity, later acquired by Tesla, challenged SRP’s discriminatory solar rates on antitrust grounds. SolarCity/Tesla took the case to the Supreme Court after a lower court rejected its request to dismiss the case. SRP reached a settlement with Tesla before the Supreme Court hearing, and the discriminatory fees were left in place. As part of the settlement SRP agreed to purchase a 25 megawatt/100 MW-hour battery energy storage system from Tesla. This meant that the basic reasons for the lawsuit, challenging the discriminatory rates, were not subject to court review and a chance to rule against SRP. The Center for Biological Diversity filed an Amicus brief against SRP’s motion to dismiss in order to have the Supreme Court consider the antitrust grounds.  

The SRP rates have been proven to stifle rooftop solar, reducing new installations in SRP service areas while installations in other areas of Arizona increased.  SolarCity claimed that SRP’s discriminatory solar rate structure is an obstacle to clean energy transition, because it undermines the value of homeowner investment in these systems. The solar rates were not examined by the courts, SRP basically claimed that it was exempt from regulation in this situation.

The Center for Biological Diversity is an Arizona-based non-profit environmental organization dedicated to the preservation, protection and restoration of biodiversity, ecosystems, and public health. On behalf of its more than 1.5 million members and online activists nationwide, including more than 890 members, and over 15,000 supporters, who live in SRP service territory, the Center advocates for a rapid transition to a clean and just energy system that optimizes renewable energy sources such as distributed solar in order to reduce U.S. greenhouse gas (“GHG”) emissions and combat climate change.

The Center filed an Amicus brief to present three discrete arguments against SRP’s motion to dismiss. First, SRP should not be permitted to rely on state action immunity to shield its discriminatory rate structure from antitrust liability, and certainly not at the pleading stage. Second, state-action immunity for utilities like SRP should in any event be constrained to open the door for distributed solar competition. And finally, SRP is violating the Equal Protection clause because its anti-solar electricity rates have no rational basis.

Charles W. Thurston has a good article on this subject in CleanTechnica:Arizona’s Salt River Project Utility Challenged On High Rooftop Solar Rates

Univ. of Arizona - Institute for Energy Solutions May 2019

Some interesting content from the May 2019 newsletter

UA Institute for Energy Solutions logo

June 7th
10 AM - Noon

Indige-FEWSS mobile water purification unit demonstration

Dr. Karletta Chief, Navajo Nation President, Jonathan Nez, Diné College President, Dr. Charles Roessel, and Diné College Students and Indige-FEWSS fellows will discuss and demo the water purification unit at Diné College, Tsaile Campus.

Water Purification UA

Imagine Adaptation | Finding Solutions fo the Food, Energy, Water, Nexus January 2019, British film company-One World Network, gathered UA researchers and community delegates to answer the question "What is being done to address the big issues at the energy, water, food nexus that will secure our world as we know it for the future?" Out of this exploratory emerged a documentary which takes a look at the many branches of UA's collaborative E-W-F research. We invite you to watch this exciting new video!

About

  • Welcome to the Arizona Solar Center

     This is your source for solar and renewable energy information in Arizona. Explore various technologies, including photovoltaics, solar water heating, solar architecture, solar cooking and wind power. Keep up to date on the latest industry news. Follow relevant lectures, expositions and tours. Whether you are a homeowner looking to become more energy efficient, a student learning the science behind the technologies or an industry professional, you will find valuable information here.
  • About The Arizona Solar Center

    About The Arizona Solar Center Arizona Solar Center Mission- The mission of the Arizona Solar Center is to enhance the utilization of renewable energy, educate Arizona's residents on solar technology developments, support commerce and industry in the development of solar and other sustainable technologies and coordinate these efforts throughout the state of Arizona. About the Arizona Solar Center- The Arizona Solar Center (AzSC) provides a broad-based understanding of solar energy, especially as it pertains to Arizona. Registered Read More
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