ENF Solar's company directory listed 1,430 solar inverter manufacturers worldwide on 2026-06-29, with China-headquartered vendors filling the majority of mid-volume string and hybrid inverter listings on Made-in-China.com, Okorder.com and Alibaba.com [S6].
Single-phase 1100W pure-sine-wave MPPT inverters ship at $100–350 per unit with a 15-unit minimum order quantity and 1,000-unit monthly supply capability through Okorder.com's aggregated storefront, which is operated by CNBM Group [S3]. Three-phase 100–136kW on-grid inverters with 311Vac / 540Vac output at 50Hz/60Hz are offered at 1-unit MOQ with 50-unit monthly capacity from the same portal [S10].
Platform-Level Supplier Landscape: Three Aggregators, One State-Backed Backbone
Okorder.com operates as a CNBM Group-funded B2B trading platform, listing single-phase Kstar solar inverters at 0-watt MOQ and 10,000-watt monthly supply capability out of Shanghai under TT or LC terms [S2]. The platform's "Solar Inverter" vertical aggregates multiple white-label and OEM manufacturers and offers credit-rating, online tracking and cargo inspection services on top of standard RFQ processing [S5].
Made-in-China.com's Shenzhen product index (page 301) shows Shenzhen Shengshi Tianhe Electronic Technology offering 300W, 2000W and 3000W pure-sine-wave DC-to-AC solar inverters under the MTS series, with model codes MTS-2000 and MTS-3000 sharing the same 12V/24V/48V DC input range [S1]. Felicitysolar lists 3-phase hybrid inverters at 18kW, 20kW, 25kW, 30kW, 40kW and 50kW for commercial PV, with the 25kW unit priced at US$2,720 per set [S7]. Sunplus combines 12kW solar-panel home systems with monocrystalline PV inverters and 5.12kWh / 15.36kWh lithium-iron battery SKUs at US$600 and US$55.2–60 per piece respectively, plus 445W full-black PV modules at US$0.105–0.28 per watt [S8].
Alibaba.com's electrical-equipment-supplies index for solar inverters offers country-level filtering covering 200+ regions, with China, United States, Mexico, United Kingdom, Germany, Australia, France, Italy, Spain, Netherlands, Switzerland, Sweden and Belgium flagged as the most-sourced destinations on the page [S9].
Product Tier Comparison: Single-Phase vs 3-Phase String vs Hybrid Microinverter
Three inverter classes dominate the supplier listings, with distinct power, efficiency and pricing bands. Single-phase MPPT hybrid inverters (1100W class) advertise transformerless topology, 97% peak efficiency and high-speed MPPT real-time power tracking, suitable for residential rooftop and small commercial loads [S4]. Three-phase 100–136kW on-grid string inverters operate at 311Vac / 540Vac selectable output with 160.4A max current, 780V DC input and 50Hz/60Hz frequency support, targeting commercial and industrial PV plants [S10].
High-power hybrid 3-phase units (Felicitysolar 25–50kW) bridge residential and C&I markets, accepting 540Vdc class input and outputting 3L/N/PE or 3L/PE at 50Hz, with set-level pricing at US$2,720 for 25kW and US$3,100 for a comparable 12kW Sunplus system bundle [S7][S8]. The mid-tier pricing band on Okorder.com ($100–350/unit) covers the 1–5kW MPPT hybrid class with 15-unit MOQ; below 1kW pure-sine-wave DC-AC units drop into the sub-$200 range, and 100kW+ string units move to project-level RFQ with 1-unit MOQ and 50-unit monthly capacity [S3][S10].
Selection Criteria Buyers Use on B2B Platforms
Power-class matching against PV array sizing is the first gate, since DC input voltage (12V/24V/48V for small off-grid; 780V for commercial string; 540V/600V/1000V/1500V for utility-scale) and AC output (single-phase 220Vac vs three-phase 311Vac/540Vac) must match the panel configuration and grid-tie requirements [S1][S10]. MPPT vs PWM controller choice, peak efficiency (97% for premium transformerless, 93–95% for modified-sine legacy), and waveform type (pure sine wave for grid-tie and sensitive loads; modified sine for cost-sensitive off-grid) follow [S3][S4].
Commercial terms layer on top: MOQ 0–15 units for retail/SMB, 1 unit for project-scale, 50–1,000 unit monthly supply capability, and TT or LC payment at Shanghai or Shekou loading ports [S2][S3][S4][S10]. For buyers comparing PV-side components alongside inverters, the Solar Cell 2026 price and tech-mix dossier and the broader Solar Inverter Upstream and Downstream 2026 Sourcing Map map the cell-to-inverter spec handoff. For a deeper look at the 2026 smart-feature and microinverter split, the Solar Inverter 2026 Specs and Sourcing Signals brief covers monitoring protocols and topology shifts that pure-supplier-directory pages omit.
Who These Supplier Lists Are For — And Who Should Bypass Them
B2B aggregated listings fit procurement engineers at EPC contractors, distributors restocking 1–50kW residential and C&I SKUs, and OEM brands sourcing white-label inverters for rebadge programs, since the platform pages expose MOQ, monthly capacity, payment terms and loading port in a single view [S3][S5][S7].
Utility-scale buyers above 1MW per project, hyperscalers, and grid operators with strict pre-qualification lists should not source directly from page-301-style indexes: utility procurement typically requires type-test certificates (IEC 62109, IEC 61727, IEC 62116 for grid support functions), country-specific grid codes (VDE-AR-N 4105 in Germany, G99 in the UK, IEEE 1547 in the US), and a documented warranty plus local service footprint that no aggregator page verifies [S6]. Off-grid telecom, oil-and-gas and remote-industrial buyers needing explosion-proof enclosures should also route to specialised vendors rather than consumer-tier B2B storefronts, since ATEX/IECEx certification is not visible in the listed specs.
Failure Modes and Sourcing Risks on Aggregator Pages
Listing-staleness is the most common failure mode: page-301-style indexes cache product pages for 12–24 months, so model codes like MTS-3000 and Kstar single-phase units may still appear on top of search results even when the manufacturer has rotated to a new PCB revision or a new firmware MPPT algorithm [S1][S2]. Spec-sheet fragmentation is the second: a "3000W" inverter is rarely three different SKUs at three different prices — the same vendor's MTS-2000 and MTS-3000 pages on Made-in-China.com repeat the same 12V/24V/48V DC input and pure-sine-wave descriptor, with only the wattage label changing [S1].
For buyers, this means cross-checking the actual CE/IEC certificate number, firmware version and MPPT tracker count (1 vs 2 MPPT) against the manufacturer's direct datasheet, instead of trusting the price band alone. The risk is highest at the sub-$200 tier, where modified-sine and pure-sine products share the same "solar inverter" keyword and the same MOQ [S1][S3].
Verification Standards and Due-Diligence Checklist
Three families of certification anchor the spec envelope for grid-tied solar inverters. Safety: IEC 62109-1/-2 covers power-converter safety for PV applications and is the baseline asked by most EU and APAC grid operators. Grid interconnection: IEC 61727 and IEC 62116 define the utility-interface characteristics and anti-islanding test methods, while regional codes (VDE-AR-N 4105, G99, IEEE 1547) layer local anti-islanding, frequency ride-through and reactive-power requirements on top. EMC: EN 61000-6-2 / EN 61000-6-3 / FCC Part 15 cover conducted and radiated emissions for residential and industrial environments. [S1]
For project-grade sourcing, the due-diligence checklist is: (1) confirm the type-test certificate ID matches the exact model number and firmware version on the data plate; (2) verify the warranty term and the regional service-center footprint; (3) cross-check MPPT count and max DC input voltage against the PV-string sizing; (4) confirm AC output voltage/frequency and grid-code compliance for the target country; (5) audit the manufacturer's PCB-revision-change history through the direct factory portal before issuing a PO. Aggregator pages accelerate RFQ but do not replace any of these five steps.
Trackable next signals: monitor the ENF Solar directory monthly delta for new entrants crossing the 1,500-manufacturer mark; watch the Okorder.com single-phase Kstar pricing band for movement outside the $100–350 window; flag any cross-listing where the same model code appears under two different brand names on Made-in-China.com and Alibaba.com within the same week. These three signals are the cleanest leading indicators of supply-side pressure in the 2026 H2 solar-inverter market.
For component-level specifications, see pressure transmitter, flow meter, and industrial valve.