Scale guide: Small is off-grid, cabins, RVs and backup (up to about 3 kW). Medium is homes, farms and small businesses (about 3 to 30 kW). Large is commercial, industrial and utility scale (30 kW up to MW and GWh).
Size your setup first: Not sure how many panels, how big an inverter or how much battery you need? Check the solar calculators in my previous post to size your desired setup, then use this guide to pick the equipment.
Read before buying: Ratings are typical manufacturer figures (STC for panels) and vary by variant, so confirm on the current datasheet. Country (HQ) is where the brand is headquartered; factories are often elsewhere. Availability, certification and warranty differ by country.
1. Solar Panels (PV Modules) N-type TOPCon is now the standard for Tier 1 brands, with back-contact and HJT at the premium end.
Small Medium Large Small Brand Country (HQ) Model Rating / Spec Website Renogy USA 100W / 200W Mono 100 to 200 W, about 20-21% eff., 12V renogy.com Victron Energy Netherlands BlueSolar / SmartSolar-ready 115 to 175 W mono victronenergy.com ECO-WORTHY China 100W / 200W Mono 100 to 200 W, budget kits eco-worthy.com
Medium Brand Country (HQ) Model Rating / Spec Website Maxeon Singapore Maxeon 7 440 to 475 W, up to about 24% eff. maxeon.com REC Singapore (Norwegian origin) Alpha Pure-R 420 to 450 W, HJT, 22%+ eff. recgroup.com Qcells South Korea Q.TRON / Q.PEAK DUO 400 to 440 W, 22%+ eff. qcells.com Canadian Solar Canada HiKu7 TOPCon 425 to 460 W, about 22.2% eff. canadiansolar.com JinkoSolar China Tiger Neo (N-type) 425 to 515 W, 22.6 to 23% eff. jinkosolar.com
Large Brand Country (HQ) Model Rating / Spec Website JA Solar China DeepBlue 4.0 (N-type) 570 to 640 W bifacial class jasolar.com LONGi China Hi-MO 9 (back contact) 580 to 670 W class longi.com Trina Solar China Vertex N 600 to 700+ W (210 mm cells) trinasolar.com JinkoSolar China Tiger Neo 3.0 600+ W bifacial class jinkosolar.com
2. Inverters Small Medium Large Small Brand Country (HQ) Model Rating / Spec Website Victron Energy Netherlands MultiPlus-II 12/3000 3 kVA inverter/charger, pure sine victronenergy.com Growatt China SPF 3000TL LVM-ES 3 kW off-grid, built-in MPPT growatt.com Renogy USA 2000W to 3000W inverter/charger 12V / 24V options renogy.com
Medium Brand Country (HQ) Model Rating / Spec Website Sol-Ark USA 12K Hybrid 12 kW hybrid, battery-ready sol-ark.com Enphase USA IQ8 Microinverters 245 to 380 VA per panel enphase.com SolarEdge Israel Home Hub / HD-Wave 3 to 11.4 kW with optimizers solaredge.com Deye China SUN-12K-SG04LP3 12 kW three-phase hybrid deyeinverter.com Fronius Austria Primo / Symo GEN24 3 to 10 kW hybrid-ready fronius.com
Large Brand Country (HQ) Model Rating / Spec Website SMA Germany Sunny Highpower PEAK3 / Sunny Central 150 kW string up to multi-MW central sma.de Sungrow China SG350HX / SG110CX 110 to 350 kW string sungrowpower.com Huawei China SUN2000-330KTL 330 kW smart string solar.huawei.com Fronius Austria Tauro 50 to 100 kW fronius.com
3. Batteries (Energy Storage) LiFePO4 (LFP) chemistry dominates at all scales for safety and cycle life.
Small Medium Large (BESS) Small Brand Country (HQ) Model Rating / Spec Website Battle Born USA 12V 100Ah LiFePO4 1.28 kWh battlebornbatteries.com Renogy USA 12.8V 100Ah / 200Ah LiFePO4 1.28 to 2.56 kWh renogy.com Victron Energy Netherlands Smart LiFePO4 12.8V 100 / 200 Ah, Bluetooth victronenergy.com
Medium Brand Country (HQ) Model Rating / Spec Website Tesla USA Powerwall 3 13.5 kWh, 11.5 kW continuous tesla.com Enphase USA IQ Battery 5P 5 kWh, 3.84 kW per unit enphase.com EG4 USA 48V 100Ah server rack about 5.12 kWh, stackable eg4electronics.com Pylontech China US5000 about 4.8 kWh, 48V pylontech.com BYD China Battery-Box Premium modular, 5 to 22 kWh+ byd.com
Large (BESS) Brand Country (HQ) Model Rating / Spec Website Tesla USA Megapack 2 XL about 3.9 MWh per unit tesla.com Fluence USA Gridstack modular utility storage fluenceenergy.com Sungrow China PowerTitan 2.0 about 5 MWh class sungrowpower.com CATL China TENER about 6 MWh class catl.com
4. Charge Controllers (MPPT) Mostly for off-grid and DC-coupled systems. Large grid systems usually have MPPT built into the inverter.
Small Medium Large Small Brand Country (HQ) Model Rating / Spec Website Victron Energy Netherlands SmartSolar MPPT 75/15 to 100/30 15 to 30 A, Bluetooth victronenergy.com Renogy USA Rover 30A / 40A 12/24V auto detect renogy.com EPEver China Tracer series 10 to 40 A, budget epever.com
Medium Brand Country (HQ) Model Rating / Spec Website Victron Energy Netherlands SmartSolar MPPT 150/70 to 250/100 up to about 100 A victronenergy.com OutBack Power USA FLEXmax 80 80 A outbackpower.com Midnite Solar USA Classic 150 / 200 high-voltage input midnitesolar.com
Large Brand Country (HQ) Model Rating / Spec Website Schneider Electric France Conext XW MPPT 80 600 600 V input, 80 A se.com SMA Germany Built-in multi-MPPT string inverters see Inverters sma.de
5. Mounting & Racking Small Medium Large Small Brand Country (HQ) Model Rating / Spec Website Renogy USA Adjustable tilt and Z-brackets for 1 to 4 panels renogy.com ECO-WORTHY China Roof/ground brackets budget kits eco-worthy.com
Medium Brand Country (HQ) Model Rating / Spec Website IronRidge USA XR100 / XR1000 rails residential and commercial roofs ironridge.com Unirac USA SolarMount / RM roof and ground unirac.com SnapNrack USA Series 100 roof mount snapnrack.com
Large Brand Country (HQ) Model Rating / Spec Website Nextracker USA NX Horizon single-axis tracker nextracker.com Array Technologies USA DuraTrack single-axis tracker arraytechinc.com GameChange Solar USA Genius Tracker / fixed tilt trackers and fixed tilt gamechangesolar.com
6. Cables, Connectors & Protection Small Medium Large Small Brand Country (HQ) Model Rating / Spec Website Renogy USA MC4 cables, fuses, DC breakers small systems renogy.com Midnite Solar USA Combiner boxes, DC breakers, surge protection small to medium midnitesolar.com
Medium Brand Country (HQ) Model Rating / Spec Website Stäubli Switzerland MC4 connectors medium systems staubli.com Eaton Ireland DC disconnects, breakers, SPDs medium to large eaton.com
Large Brand Country (HQ) Model Rating / Spec Website Schneider Electric France Combiner boxes, switchgear utility scale se.com
How to Choose Size the load first (daily kWh), then the array, then storage. Match voltage: panel string voltage must fit the inverter or controller MPPT window. Check the temperature coefficient: lower is better in hot climates. Compare warranties: panels typically 25 to 30 years, batteries 10 years or a throughput limit. Check local certification (UL, IEC, CE) and installer support. Specs are approximate typical values and may change with new releases. Verify on each manufacturer's website before purchasing. 
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