Arizona sits squarely inside the territory Comstock Metals built its southwestern network to serve. The company’s flagship zero-landfill plant in Silver Springs, Nevada, and its state-approved facility in Hanford, California, were established because so many of America’s modules have been deployed across California, Arizona, and Nevada. For Arizona asset owners, that puts an R2v3-certified, All-American destination for retired panels within a regional truck route rather than an export container.
Few places on Earth collect sunlight as reliably as the Sonoran and Mojave deserts that stretch across Arizona. Yuma averages about 313 days of sun each year, with Phoenix close behind at around 296. Not all solar power generation is easy in Arizona. Flagstaff, perched near 7,000 feet on the Colorado Plateau and dusted with winter snow, can pose tough conditions for hardware: summer days above 110°F, monsoon dust storms, and wide temperature swings that can damage solar modules.
Thanks to these prime conditions, Arizona now boasts over 13GWdc of installed capacity, the fourth-most of any state, and SEIA projects about 18 GW of additional growth over the next five years, the third-largest pipeline in the country. Solar now supplies roughly 18% of Arizona’s electricity, enough for close to two million homes, and the state ranks third nationally for energy storage with 26.5 GWh on the grid.
This buildout has continued even after the Arizona Corporation Commission voted in March 2026 to repeal its Renewable Energy Standard and Tariff, a sign that economics, rather than mandates, now drive most new projects in Arizona. For recyclers, today’s volume includes not only full retirements, modules cracked during shipping or construction, units pulled for warranty defects, and panels damaged by harsh conditions, but also matters.
Source: Solar in Arizona, SEIA
Arizona does not classify photovoltaic modules as universal waste. The Arizona Department of Environmental Quality (ADEQ) operates the state’s hazardous waste program under delegated EPA authority. Retired panels are sorted through the ordinary federal process established under the Resource Conservation and Recovery Act (RCRA), which Arizona adopts through A.A.C. R18-8-261, which incorporates 40 CFR Part 261.
Under that process, whoever generates the waste, typically the project owner or its O&M contractor, is responsible for characterizing it. Because some modules contain lead solder or cadmium telluride, characterization often calls for the Toxicity Characteristic Leaching Procedure (TCLP), a lab method that simulates how metals might leach out in a landfill. A module exceeding regulatory limits must be transported on a hazardous waste manifest to a permitted facility. One that stays within those limits can be shipped as solid waste, but only if the owner keeps the paperwork showing how the call was made.
Arizona also carries over two federal recycling provisions found at 40 CFR 261.4: the Verified Recycler Exclusion from 2015 and the Transfer-Based Exclusion from 2018. When modules go to a legitimate reclaimer that can document compliance with one of them, owners can sidestep many obligations tied to hazardous waste shipments. Asking a prospective recycler which exclusion it relies on, and for proof, is one of the simplest ways to shield a project from liability that surfaces years later.
No statewide Arizona law requires decommissioning plans or bonds for solar farms. Lawmakers came close in 2023, when HB 2618 would have required financial assurance for ground-mounted systems of 51 kW or larger on vacant or agricultural land, but the bill was vetoed. Counties have stepped into part of the gap.
Nationally, the EPA is still weighing whether to add solar modules to the federal universal waste list, a move that would ease paperwork for moving them between states. Until that happens, a shipment from Arizona to a recycling plant elsewhere must satisfy the rules of the state where it starts and the state where it lands. Comstock Metals’ free tool maps how each state handles end-of-life panels today.
Because Arizona borders both Nevada and California, modules coming off a project near solar hubs such as Phoenix, Tucson, or Yuma face a comparatively short haul to Comstock Metals’ southwestern facilities.
What happens after arrival is where real recycling sets itself apart. Comstock Metals recovers the glass, aluminum, silicon, silver, and copper inside each module without smelting or wastewater, returning clean materials to America’s manufacturing supply chain instead of sending shredded residue to a landfill or overseas.
Services available to Arizona solar owners and operators include:
Keeping each of those steps under one roof lets Comstock Metals give Arizona customers a single accountable partner, documentation aligned with ADEQ and RCRA expectations, and far less residual financial or legal exposure from retired equipment.
Comstock Metal's Qualifications:
Contact Comstock Metals today to learn more about decommissioning and end-of-life solar panel management in Arizona.
It can. Extreme heat, intense UV, and large daily temperature swings accelerate wear on encapsulants, backsheets, and connections, so some Arizona modules reach the end of life earlier than their warranty terms suggest. Dust storms and hail add physical damage on top of that gradual aging.
No. ADEQ’s universal waste rule does not include photovoltaic modules. Panels are characterized under the standard RCRA framework, which Arizona adopts by reference, so owners need to determine whether a given batch is hazardous or non-hazardous before it moves.
Not by state law. A 2023 bill that would have required financial assurance was vetoed. Some counties, including Yavapai, impose decommissioning and financial assurance conditions through zoning, and land leases often contain their own removal terms, so check both for your site.
Comstock’s southwestern network, anchored by its Silver Springs, Nevada, plant and its Hanford, California, facility, was built to serve the California, Arizona, and Nevada market. Our team will confirm routing and logistics when scoping your project.
Yes. Comstock Metals accepts broken and damaged panels, including crystalline silicon and thin-film types, and recovers their glass, metals, and silicon the same way it handles intact units.
The site location, approximate panel count and types, module condition, your target timeline, and whether you need removal or freight included. With those details, our team can quickly scope an accurate price.
