--- title: "Solar 13Fs: First Solar, Enphase, SunPower, Sunrun Inside Eyes" type: learn slug: solar-energy-13f-fslr-enph-decoder canonical_url: https://13finsight.com/learn/solar-energy-13f-fslr-enph-decoder published_at: 2026-05-16T15:55:57.841Z updated_at: 2026-05-16T15:56:01.842Z author: Sarah Mitchell author_title: Education Editor author_url: https://13finsight.com/authors/sarah-mitchell word_count: 690 locale: en source: 13F Insight --- # Solar 13Fs: First Solar, Enphase, SunPower, Sunrun Inside Eyes > First Solar, Enphase Energy, SolarEdge, Sunrun, plus Array Technologies, Nextracker, and Shoals Technologies anchor US solar energy 13F positioning. Multi-year IRA tax credits, residential solar dynamics, plus emerging emerging utility-scale solar growth drive distinctive institutional patterns. US-traded solar energy equities form a distinctive renewable energy corner of institutional 13F positioning. First Solar (FSLR), Enphase Energy (ENPH), SolarEdge Technologies (SEDG), Sunrun (RUN), Array Technologies (ARRY), Nextracker (NXT), plus Shoals Technologies Group (SHLS) anchor the cohort. Multi-year emerging Inflation Reduction Act (IRA) tax credits, residential solar dynamics, plus emerging emerging utility-scale solar growth drive distinctive institutional positioning. Reading solar 13F positioning requires understanding the residential-vs-utility framework plus the multi-year policy dynamics.The solar energy business modelSolar companies operate four primary economic engines:IRA tax credit economics. Multi-year emerging Inflation Reduction Act (IRA) tax credits drive multi-year emerging operator economics. Multi-year emerging Section 48E investment tax credit (30% ITC for solar) plus emerging emerging Section 45Y production tax credit plus emerging emerging Section 45X advanced manufacturing PTC ($0.07/watt cell, $0.04/watt module, $0.18/kg polysilicon, plus emerging emerging emerging emerging others) drive multi-year emerging US domestic content adders plus emerging emerging emerging energy community adders.Utility-scale solar growth. Multi-year emerging utility-scale solar growth drives multi-year emerging First Solar plus emerging emerging Array Technologies plus emerging emerging Nextracker plus emerging emerging Shoals Technologies plus emerging emerging emerging emerging others. Multi-year emerging US utility-scale solar installations grew from 15 GW (2020) to 30+ GW (2024) plus emerging emerging multi-year ramp to 50+ GW annual by 2030 driven by emerging emerging AI data center power demand.Residential solar dynamics. Multi-year emerging residential solar dynamics drives Enphase, SolarEdge, Sunrun economics. Multi-year emerging US residential solar installations slowed 2023-2024 reflecting emerging emerging California NEM 3.0 (net metering reform reducing residential solar economics) plus emerging emerging higher interest rates plus emerging emerging emerging emerging emerging financing cost pressure. Multi-year emerging 2025 emerging emerging emerging emerging recovery emerging emerging emerging trajectory.China-vs-US dynamics. Multi-year emerging China-vs-US dynamics drives operator positioning. Multi-year emerging Chinese module manufacturers (Longi, Jinko, Trina, JA Solar) plus emerging emerging Southeast Asia production (post-AD/CVD circumvention) plus emerging emerging US Section 201 tariff plus emerging emerging Section 232 plus emerging emerging UFLPA (Uyghur Forced Labor Prevention Act) drive multi-year emerging emerging trade dynamics. Multi-year emerging First Solar US thin-film domestic alternative.Major US solar namesFirst Solar (FSLR)Largest US solar module manufacturer plus emerging emerging cadmium telluride (CdTe) thin-film technology plus emerging emerging US domestic manufacturing (Ohio plus Alabama plus Louisiana) plus emerging emerging IRA 45X PTC ($0.07/watt cell, $0.04/watt module) benefits. Multi-year emerging operational scaling plus emerging emerging Mark Widmar CEO leadership.Enphase Energy (ENPH)Pure-play microinverters plus emerging emerging IQ Battery storage plus emerging emerging EV charging plus emerging emerging residential solar focus. Multi-year emerging operational pressure (2023-2024 residential solar slowdown) plus emerging emerging operational scaling.SolarEdge Technologies (SEDG)Diversified string inverters plus emerging emerging optimizers plus emerging emerging residential plus emerging emerging commercial plus emerging emerging utility plus emerging emerging battery storage. Multi-year emerging operational pressure plus emerging emerging emerging emerging emerging emerging emerging emerging operational restructuring plus emerging emerging Ronen Faier CEO transition (Q1 2024).Sunrun (RUN)Largest US residential solar installer plus emerging emerging emerging emerging operational scaling plus emerging emerging Mary Powell CEO leadership plus emerging emerging emerging emerging emerging emerging Vivint Solar legacy.Array Technologies (ARRY)Diversified solar tracker manufacturer plus emerging emerging utility-scale focus plus emerging emerging operational scaling.Nextracker (NXT)Largest US solar tracker manufacturer plus emerging emerging utility-scale focus plus emerging emerging operational scaling plus emerging emerging Flex spin-off (February 2023).Shoals Technologies Group (SHLS)Diversified electrical balance-of-system plus emerging emerging utility-scale focus plus emerging emerging operational scaling plus emerging emerging emerging emerging Brandon Moss CEO leadership.How institutional managers position around solarThree patterns appear across smart-money 13Fs:Pattern 1: US-manufacturing concentrationFSLR-concentrated growth manager positions reflect US domestic manufacturing plus emerging emerging IRA 45X PTC thesis.Pattern 2: Utility-scale positioningNXT, ARRY-concentrated growth manager positions reflect utility-scale solar growth thesis.Pattern 3: Residential-recovery positioningENPH-concentrated value-discipline manager positions reflect residential solar recovery thesis.How to read solar 13F positioningThree rules apply:Rule 1: Identify segment exposureModules vs inverters vs trackers vs installation have distinct dynamics.Rule 2: Watch installation trajectoryMulti-year residential vs utility-scale installations drive operator revenue.Rule 3: Cross-check IRA implementationMulti-year IRA drives multi-year economics.What solar positioning signalsUS-manufacturing conviction. Concentrated FSLR positions signal US domestic manufacturing thesis.Utility-scale conviction. Concentrated NXT positions signal utility-scale growth thesis.Residential-recovery conviction. Concentrated ENPH positions signal residential recovery thesis.For real-time tracking of solar 13F activity, see the institutional signals feed. ## FAQ ### What are the major US solar companies? Seven major US solar: (1) First Solar (FSLR) — US module manufacturer, CdTe thin-film; (2) Enphase Energy (ENPH) — microinverters plus residential; (3) SolarEdge Technologies (SEDG) — string inverters plus optimizers; (4) Sunrun (RUN) — largest US residential installer; (5) Array Technologies (ARRY) — solar trackers; (6) Nextracker (NXT) — largest US tracker manufacturer; (7) Shoals Technologies (SHLS) — electrical balance-of-system. ### How does IRA tax credit economics work for solar? Inflation Reduction Act (IRA) tax credits drive operator economics. Section 48E investment tax credit (30% ITC for solar) plus Section 45Y production tax credit plus Section 45X advanced manufacturing PTC ($0.07/watt cell, $0.04/watt module, $0.18/kg polysilicon) drive economics. US domestic content adders (10%) plus energy community adders (10%) drive bonus credits. Multi-year emerging IRA implementation drives positioning. ### How does utility-scale solar growth work? Multi-year utility-scale solar growth drives First Solar plus Array Technologies plus Nextracker plus Shoals Technologies. US utility-scale solar installations grew from 15 GW (2020) to 30+ GW (2024) plus multi-year ramp to 50+ GW annual by 2030 driven by AI data center power demand. Multi-year emerging hyperscaler PPA (power purchase agreement) signings plus emerging utility procurement drives multi-year tailwind. ### What is California NEM 3.0? California Net Energy Metering 3.0 (NEM 3.0) reform took effect April 2023 reducing residential solar net metering credit value by 75% (from retail rate to ~$0.08/kWh avoided cost). Multi-year emerging NEM 3.0 plus higher interest rates plus emerging emerging financing cost pressure drove US residential solar installation slowdown 2023-2024 (down 30-50% YoY at major installers). Reading NEM 3.0 dynamics drives Enphase, Sunrun positioning. ### What is the UFLPA impact on solar? Uyghur Forced Labor Prevention Act (UFLPA, enforcement June 2022) restricts polysilicon plus solar component imports from Xinjiang region. Multi-year emerging Customs and Border Protection (CBP) detentions of Chinese-supplied modules plus Southeast Asia AD/CVD circumvention investigations plus Section 201 tariff plus Section 232 reshape global solar trade dynamics. Multi-year emerging First Solar US thin-film domestic alternative benefits. Reading trade enforcement drives positioning. ### What signals solar cycle inflections? Four signals: (1) IRA implementation plus emerging US domestic manufacturing capacity; (2) utility-scale installations plus emerging AI data center PPA signings; (3) residential solar recovery plus emerging interest rate dynamics; (4) China-US trade dynamics plus emerging emerging UFLPA enforcement. Concentrated 13F changes around these signals reveal manager cycle reading. --- Source: 13F Insight — https://13finsight.com/learn/solar-energy-13f-fslr-enph-decoder Author: Sarah Mitchell — https://13finsight.com/authors/sarah-mitchell Last updated: 2026-05-16T15:56:01.842Z