Three separate parties spent last week pooling leverage they had been holding alone, and in each case the payroll was the part that did not survive the merge. OCI's Mission Solar stopped assembling modules in San Antonio and a Singapore-headquartered competitor took the building. First Solar withdrew its own enforcement case at the US International Trade Commission — the Commission, not the 48E ITC credit — on the reasoning that the tariff schedule now does that job at the border. SEIA absorbed the Coalition for Community Solar Access outright. Six companies that compete in adjacent lanes pooled their buying into one alliance.
Underneath the consolidation, the work itself kept moving onto new surfaces and new equipment: a village reservoir in Ohio, bidirectional EV supply gear that finally has a certification path, and a four-hour battery commissioned next to a PV plant in Georgia. The mergers are where the headlines are. The scopes are where next year's call-outs are.
Mission Solar went 200 to 70 to none, and the building is already relet
Texas records reviewed by Solar Power World indicate OCI is bringing in Elite Solar — the Singapore-headquartered manufacturer formerly known as ET Solar — at the San Antonio site on the former Brooks Air Force Base where OCI's Mission Solar Energy has run roughly 500 MWdc of annual module assembly. Elite is spending about $15 million renovating an existing warehouse, with construction running October 2026 to June 2027. That warehouse was originally put up for the $265 million, 2 GWdc cell plant OCI and Mission announced in 2025 and never built.
The headcount arithmetic comes from Mission Solar's Sam Martens, whose testimony Solar Power World quotes:
We previously employed more than 200 workers. But, due to the market conditions caused by subject imports, we only had 70 employees by 2025, and have now temporarily ceased all manufacturing operations and related employment.
No WARN notice was filed in Texas. That is the detail worth internalising if you run a line or a shift in Bexar County: the capacity is being preserved and the building relet, but the employment relationship ended without the 60-day notice most people assume attaches to a plant going dark. Watch Elite Solar's renovation schedule, not Mission Solar's careers page, for when San Antonio hires module assembly again.
First Solar dropped its Commission case and let the tariff do the work
On 16 September First Solar voluntarily withdrew the Section 337 complaint it filed in February at the US International Trade Commission over US Patent No. 9,130,074, a silicon TOPCon patent it acquired in a 2013 purchase. The respondents named in the original complaint were:
- AMPS (the JA Solar/Corning venture), Axitec, Canadian Solar and Jinko Solar
- Philadelphia Solar, Qcells, Runergy and VSUN (Toyo)
- Trina Solar, including T1 Energy
Mundra (Adani) was removed for not selling TOPCon modules into the US, and BYD, Imperial Star and Tesla had moved to intervene. First Solar general counsel Jason Dymbort tied the withdrawal straight to trade policy: "The Trump Administration's Sec. 232 action helps level the playing field at the border, and we are more determined than ever to enforce our IP rights and defend the rule of law here at home." The district court suits against Canadian Solar, Jinko, T1 Energy and Trina continue.
For a procurement desk this removes the worst case, which was an exclusion order barring a large slice of TOPCon supply at entry with no wind-down period. It does not move the December date. Per pv magazine USA's reporting on the August proclamation, the Section 232 minimum import prices — floors below which duty attaches, not tariff rates — take effect at 12:01 Eastern on 4 December 2026 at $0.38/Wdc on modules and $0.22/Wdc on cells, with a 15% ad valorem layer alongside. Patent damages are the manufacturer's balance-sheet problem. The 4 December floor is a $/Wdc problem for whoever signed your EPC contract.
SEIA absorbed CCSA, and community solar lost its single-issue lobby
Announced 16 September, effective early October after both boards approved: the Coalition for Community Solar Access folds its team, resources and policy work into SEIA. SEIA CEO Tim Pawlenty called it "creating a stronger, more unified voice for the solar and storage industry." Departing CCSA CEO Jeff Cramer said distributed community power now needs "greater scale, resources and expertise to meet the moment."
Read it as a resourcing decision with a jurisdictional consequence. Community solar is won or lost inside individual state proceedings — subscriber protection rules, bill credit rates, capacity block allocations — and those are argued by people who do nothing else all year. If you are building a community solar portfolio in Illinois or New York, the useful question this autumn is which named staff carry your state's docket into October. That person's calendar, not the merger announcement, decides whether your programme rules get contested on schedule.
Six companies pooled procurement to claw back 25¢/W for small shops
The Strong Tail Solar Alliance launched in September with Bodhi, Climate First Bank, Scanifly, JA Solar, Damaris Solutions and Krannich Solar as founding members, operated by OneEthos, a Climate First Corp subsidiary. The pitch is aggregation: the alliance says qualified residential and commercial installers can take roughly 25¢/W or more out of their cost stack through pooled financing and supply access. Treat that as the alliance's own number until an installer publishes a before-and-after on its redline.
The context is 25D. The residential credit terminated for expenditures after 31 December 2025, so cash and loan deals that used to close against a 30% federal assumption now have to close on price alone. Scanifly CEO Jason Steinberg's framing — "Most solar installers in the US are small and medium shops that have built trusted relationships with their communities" — is the market that survived the last two years of Chapter 11s. Bodhi founder Scott Nguyen put the thesis as rewarding companies "for doing great work... not simply for being the biggest." For a ten-truck shop, 25¢/W is the gap between a redline that carries a crew through winter and one that does not. A webinar series on pricing and supply chain follows this autumn.
Bidirectional EV equipment finally has a listing path
UL Solutions opened testing and certification on 14 September for bidirectional EV supply equipment, working to UL 1741 Supplement SC, UL 9741 and SAE J3072 at its Fremont, California and Northbrook, Illinois laboratories. The scope is the gear sitting between a vehicle with an onboard bidirectional inverter and the utility, monitoring and managing flow while meeting interconnection requirements.
This is the unglamorous infrastructure that turns an idea into a sellable scope. A plan reviewer at the AHJ and an interconnection engineer at the utility both want a listing to point at; until one exists, every job is a bespoke approval and every quote carries schedule risk you cannot price into it. Wesley Kwok, who runs UL's energy and industrial automation group, described the goal as turning unused vehicle battery capacity into a resource for utilities and communities. For a residential crew already doing hybrid and AC-coupled retrofits, this is the adjacent scope worth training for — same service panel work, same interconnection paperwork, different box on the wall.
Monroeville, Ohio floated 6 MWdc because there was no spare ground
A village of 1,300 in northern Ohio now holds one of the larger floating arrays in the country: 6 MWdc on a 12-acre village-owned reservoir, designed and built by D3Energy with Gardner Capital and Ohio contractor Appalachian Renewable Power. Gardner Capital owns the system and sells the output to the village, which has also run a ground-mounted array since 2017. Solar Power World reports the pair gives Monroeville roughly 13 times the solar capacity per resident of the rest of Ohio.
D3Energy managing director Stetson Tchividjian gave the reason without decoration: "Solar needs space, and in farm country there's no such thing as spare ground." Floating PV is neither a rooftop skill nor a ground-mount skill. It is float assembly staged on shore, mooring and anchoring designed against wind and ice loading, cable management that tolerates a moving water level, and boat access for every O&M visit afterwards. D3Energy has now completed three floating projects in Ohio, more than in any other Midwest state. That is a small labour pool and a growing one, which is exactly the kind of line that earns a call-back on a Midwest CV.
Georgia Power energised a 128 MW, 512 MWh battery beside a PV plant
The four-hour battery at Robins Air Force Base in Warner Robins, Georgia entered commercial operation, paired with the nearby Robins Solar Facility. Burns & McDonnell was the EPC contractor and, per Georgia Power, delivered on schedule. It is one of four utility battery projects in the programme: sites in Cherokee and Lowndes counties totalling 579.5 MW are complete, and a 57.5 MW facility in Floyd County is close behind. Georgia Power senior vice president Rick Anderson framed the base project as investment in reliability for state load growth.
Look at the shape of the job rather than the press release. 512 MWh across 128 MW of inverter capacity is a four-hour system, and four-hour systems are commissioning-heavy: enclosure sets, DC block terminations, protection settings, then capacity testing against a contract guarantee, all of it running for months after the PV side reaches mechanical completion. On PV-coupled sites this second mobilisation is now standing work, and the techs who can run a capacity test and then argue the result against the guarantee are the ones who stay on payroll through the winter.
The through-line for the week is that leverage consolidated and headcount did not follow it. A building in San Antonio keeps its 500 MWdc of capacity and loses every job attached to it. A patent fight ends because a tariff schedule is cheaper than litigation. A trade association gets larger while the segment it now speaks for gets smaller. What is still growing attaches to equipment and sites rather than to brands — battery commissioning, bidirectional EV gear, floating arrays, and O&M on fleets whose original installer no longer exists. That is also where the postings are: see what is open this week.