• Renewable Activity in Other States

    There are a lot of renewable energy and energy efficiency efforts going on in other states and Puerto Rico.   Some interesting links:  New York targets 1.5 TWh of new renewables with latest solicitation  New York updates distributed solar tariff, clearing path for 1 GW of new generation  Committing to climate: Transformation is underway in the US power sector  California Read More
  • 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 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 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 Read More
  • Federal Residential Renewable Energy Tax Credit

    (Information provided by DSIRE - Last reviewed 02/19/2009) 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: 30% Maximum Incentive: Solar-electric systems placed in service before 2009: $2,000Solar-electric systems placed in service after 2008: no maximumSolar water heaters placed in service before 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 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 Read More
  • 1 Renewable Activity in Other States
  • 2 New Discovery Could Improve Organic Solar Cell Performance
  • 3 Know Your Rights
  • 4 Home Battery Systems
  • 5 Solar Hot Water
  • 6 Federal Residential Renewable Energy Tax Credit
  • 7 Solar Building Design in Arizona
  • 8 How Not to- Battery Connections


  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. 


Some things to pay attention to in Arizona

Reminder- Arizona tax credit information is available here: Arizona Tax Incentives

Seeking Arizona agriculture producers who are using small solar systems in their operations in Arizona

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.


Proposed new rules covering connecting to the utility power grids in Arizona has been posted and a notice by the Hearing Division to hold oral proceedings to receive public comment on the Notice of Proposed Rulemaking on March 28. 2019. at 10:00 am. or as soon as practicable thereafter. in Room 722 at the Commissions offices in Tucson. Arizona and on March 29, 2019. at 10:00 a.m. or as soon as practicable thereafter, in Hearing Room No. I at the Commissions offices in Phoenix. Arizona.

A somewhat complex NOTICE can be downloaded at http://docket.images.azcc.gov/0000195373.pdf

UPDATE 1-24-19: ACC approved new draft interconnection rules At their Jan. 16 meeting, Commissioners preliminarily approved a set of rules that could help link renewables and batteries to the grid, making it easier for customers across the state to utilize.

There is a good description of these new rules and their significance at: https://tinyurl.com/ya24baws

See the 4-26-19 Staff Report for a good summary: https://docket.images.azcc.gov/0000197570.pdf

SRP approves rate decrease as directors argue about solar power and batteries.

Last week, SRP wrapped up their public pricing process at a final rate setting board hearing.
The board approved new rates for SRP customers, which will translate to a $1 to $4 decrease in monthly bills.
The board also voted to lower rates for solar customers, approve three new options for solar customers, and adopt a new battery/storage incentive.


APS announces 2018 ended with 16,479 applications and 14,818 installations: 

APS 2018 PV

Note: APS applications peak in August due to deadlines to freeze APS purchase rates for 10 years.


Attorney General Warns About Deceptive “Solar Initiative” Flyers

PHOENIX – Attorney General Mark Brnovich issued a warning today about deceptive flyers appearing on residences in the Phoenix area that promote a solar energy effort.

The flyers claim to be a “Public Notice” from the “Maricopa County Solar Initiative,” and claim that “Arizona and the Federal Government ITC (26 USC § 25D) are paying to have solar energy systems installed on qualified homes in this neighborhood.” The flyers tell consumers to call to schedule their “site audits.” Consumers who call are subjected to a solar sales pitch by a private company. In addition, the Maricopa County Solar Initiative’s website improperly uses a modified version of the county seal, but the “Solar Initiative” is linked to a private business and is not associated with the county. The “Solar Initiative” is also not registered to do business in Arizona.

Similar flyers previously appeared in Clark County, Nevada, this summer, and law enforcement officials there have warned that the “Clark County Solar Initiative” notices are deceptive.

Arizona Attorney General Mark Brnovich has aggressively prosecuted businesses masquerading as government agencies, including obtaining consent judgments against “Mandatory Poster Agency” and “Compliance Filings Service,” resulting in full restitution for Arizonans totaling hundreds of thousands of dollars.

A picture of the “Public Notice” is below:
A picture of the improperly modified county seal used by the “Solar Initiative” is below:

 If you believe you are a victim of consumer fraud, you can file a complaint online at the Arizona Attorney General’s website. You can also contact the Consumer Information and Complaints Unit in Phoenix at (602) 542-5763, in Tucson at (520) 628-6648, and outside of the metro areas at (800) 352-8431.


Also covered at: https://www.azcentral.com/story/news/local/arizona/2018/11/26/deceptive-flyers-circulate-arizona-promoting-solar-energy-effort/2115597002/



General News

Caution- News leads open in new windows. Warning- These news links are automatically generated by others such as Google News and are not reviewed by the Arizona Solar Center, Inc. We are not responsible for link content.

Interesting Videos


Follow up to Interconnection Workshop


Fri, Mar 20, 2015 3:51 pm


APS Renewable Energy





Thanks to all who attended the February 9th interconnection workshop or sent written comments—we received terrific suggestions and feedback.  Presentation materials are posted at aps.com/renewables. We were asked to provide a summary of changes to our interconnection requirements, and we posted it to the same page. The 2015 interconnection requirements themselves (rev. 8.0) are now posted at aps.com/dg, and all updates are highlighted for your convenience. Careful attention to the APS Interconnection Requirements will greatly speed the customer’s interconnection time!


Without further ado, here is the list of questions from the forum about the process of interconnection—that we promised to address:


Q. Why is APS taking test meters that are not marked with a  RECYCLE sticker?

A. We should not be!  Please email us with a reservation ID if this occurs and we’ll rectify the situation.  We have escalated this with our field services team to ensure this does not happen. Per Section 9 of the Interconnection Requirements, for fast-track residential interconnections, you can now simply provide a meter cover made of approved materials such as Plexiglas, rather than leaving a test meter—this will reduce the chance of similar errors in the future.  Please note that as we discussed on 2/9, test meters are required for systems 12kW-AC+; systems with 3+ inverters; supply side taps; or battery systems.


Q.  What is the APS policy on lockboxes?

A. They may be allowed on some commercial installations if a facility cannot comply with the APS 24/7 access policy; they are not allowed on residential installations.  We have updated our interconnection requirements to clarify the commercial facility exception.


Q.  Does APS have a guide to reading meters? A. Yes.  Instructions for reading bi-directional and non-standard (production) meters are at aps.com.  Regardless of type, a meter’s display cycles through several fields of data, but total kWh flashes immediately after the time is shown.  If customers need help, they may call 602-328-1924 or 1-800-659-8148 for assistance.


Q.  (1) Can APS show more fields on the installer report?  (2) If an installer is also listed as the dealer, can the online application navigation be changed so that you stay in the application after one certification has been processed and more quickly complete the other certification?  (3) Can a comments section be added to the installer view to provide more transparency on redlines?  (4) Can you add a message center to broadcast application queue/work flow “APS is processing applications submitted on XXX date.”  (5) Can APS clarify language in approval emails to reduce customer confusion? A.  We liked these suggestions, and we have completed item (2) already.  It’s our hope to implement all of these changes; please stay tuned.


Q.  Can APS review interconnection applications redlines in a separate queue, rather than the customer going to the back of the line based on the newer submittal date? A.  We are open to both collapsing steps and changing the redline review procedure, and are reviewing these streamline options internally right now. We’ll get back with you shortly.


Q.  For O&M, we don’t want to wait for APS to remove the lock, seal, or meter.  How can we proceed with our work? A.  We have a same-day service where APS will pull meters and then return to reinstall them—please utilize this document as your guide to contact APS for upgrades, de-rates, repairs, expansions, etc. Cutting locks/seals or removing meters is considered tampering and will be reported to law enforcement if warnings do not halt this practice.


Q. Will APS allow electronic signatures on the disclaimer document? A. Unfortunately, this is not possible while regulatory decision language requires APS to collect a “hand-signed” document.


Q. The online certification asks installers to verify they have been paid in full; is this segment of the certification still needed? A. No, it is not; the paid-in-full invoice is an artifact of our incentive program requirements and has been ruled as not applicable to the interconnection program. We are removing this language from the certifications. 


Q. Is APS making any outbound calls to customers that delay the meter set? A. APS encourages customers to call 602-328-1924 or 800-659-8148 regarding their service plans.  An outbound call to customers with specific services plans (such as combined advantage or electric vehicle rates, for example) is triggered by our meter set request.  To avoid delay, customers should return our call as soon as possible so that we can complete the meter set in a timely manner.


Q. Several permitting questions arose.  Is it okay with APS for Prescott Valley to require a reservation ID prior to issuing a permit?  Paradise Valley isn’t issuing green tags—how can we avoid delays in that circumstance?  A. The authorities having jurisdiction set their own rules, however, we have reached out to Yavapai County to explain that we no longer have an incentive program.  We explained that it is certainly best practice for the customer to receive interconnection approval prior to the system being built, but we understood that sometimes permit applications are sent to the AHJs in advance of when the APS interconnection application is submitted—this in itself does not violate our process. Regarding Paradise Valley, APS still receives clearances from them directly—we’ll continue to note the clearance in the application once the clearance desk posts it to the customer’s account (this occurs the same day it is received from the AHJ).


Now that we have held the interconnection workshop and published the 2015 revision of the interconnection requirements, we are using the updated requirements and associated plan documents as our guide, and changes are effective 3/30/2015.  To avoid delays, please use only the 2015 materials as your guide when developing your interconnection applications/designs, and email us at This email address is being protected from spambots. You need JavaScript enabled to view it. if you have any questions. 


Thank you!


APS Renewable Energy Program


  • 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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