What to Buy — and How Not to Get Cheated
Buy on verification, not on brand loyalty. For panels that means a serial checked against the manufacturer’s own portal and a barcode visible inside the glass. For inverters it means asking who actually builds the unit and where the service centre is. For batteries it means cycles, not years. These guides give you the check, brand by brand.
29 guides in this pillar · clusters M9 · How we verify ↗
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- 400-Watt Solar Panels: The Workhorse Class, Explained
400 watts is residential solar's default panel: door-sized, about 1.4 kWh a day in average sun, twenty of them powering a home. What one panel really runs.
Updated 17 Sept 2026 - Best Solar Panels for US Homes: Residential and Mobile Module Guide
Compare top solar panels for residential rooftops and mobile setups using verified datasheets for efficiency, degradation, and wind load ratings.
Updated 18 Sept 2026 - Bifacial Solar Panels: When Two Faces Beat One
Glass-backed panels harvest light bouncing off whatever is beneath: single-digit gains over shingles, double-digit over gravel and snow. Where bifacial pays.
Updated 17 Sept 2026 - EcoFlow 100W Flexible Solar Panel Buying Guide: Specs and Rigging
Technical review of EcoFlow 100W Flexible Solar Panel: 5.1 lbs weight, 258-degree flex, 182 monocrystalline cells, 23% efficiency, and IP68 waterproof rating.
Updated 18 Sept 2026 - EcoFlow DELTA Max Buying Guide: Specs, Capacity, and Power
Technical review of EcoFlow DELTA Max: 2016-6048 Wh capacity, 2400W AC output, 3400W X-Boost, 800W solar charging, and dual-source recharging performance.
Updated 18 Sept 2026 - EcoFlow DELTA Pro Buying Guide: Specs, Capacity, and Power
Technical buying guide for the EcoFlow DELTA Pro. Review 3.6-25 kWh capacity, 3600W-7200W AC output, 1600W solar charging, and LiFePO4 battery longevity.
Updated 18 Sept 2026 - EcoFlow DELTA Pro Ultra Buying Guide: Specs and Solar Limits
Technical review of the EcoFlow DELTA Pro Ultra: 6-90 kWh capacity, 7.2-21.6 kW output, 16.8 kW solar input, 290V DC tolerance, and whole-home backup.
Updated 18 Sept 2026 - EcoFlow DELTA Pro vs. DELTA Pro Ultra: Technical Comparison
Comparative analysis of EcoFlow DELTA Pro vs DELTA Pro Ultra: 3.6-25 kWh vs 6-90 kWh capacity, 3600W vs 7.2-21.6 kW output, and 1600W vs 16.8 kW solar limits.
Updated 18 Sept 2026 - EcoFlow Smart Home Panel 2 Buying Guide: Subpanel & Backup Specs
Technical review of EcoFlow Smart Home Panel 2: 12 backed-up circuits, 20ms auto-switchover, NEMA 3R outdoor enclosure, TOU mode, and generator integration.
Updated 18 Sept 2026 - Enphase IQ Battery 10T Buying Guide: Specs, Sizing, and Backup
Detailed buying guide for the Enphase IQ Battery 10T. Review 10.08 kWh usable capacity, 3.84 kVA continuous power, modular construction, and 15-year warranty.
Updated 18 Sept 2026 - Enphase IQ Battery 5P Buying Guide: Specs, Power, and Sizing
Detailed buying guide for the Enphase IQ Battery 5P. Review 3.84 kVA continuous power, 7.68 kVA surge, LFP chemistry, 15-year warranty, and UL 9540A safety.
Updated 18 Sept 2026 - Enphase IQ Battery 5P vs. 10T: Power, Specs, and Comparison
Compare Enphase IQ Battery 5P vs. 10T. Review power density, 7.68 kVA vs. 5.76 kVA surge, wired vs. wireless comms, motor starting, and modular sizing.
Updated 18 Sept 2026 - Enphase IQ Combiner 5 Buying Guide: Specs, CTs, and Sizing
Buying guide for Enphase IQ Combiner 5 and 5C. Review 80 A solar capacity, integrated IQ Gateway, ±0.5% revenue-grade CT metering, and NEMA 3R enclosure.
Updated 18 Sept 2026 - Enphase IQ System Controller 3 Buying Guide: MID and Backup Specs
Buying guide for Enphase IQ System Controller 3 and 3G. Review 200 A busbar, 160 A continuous, 3,600 VA neutral transformer, generator integration, and MID.
Updated 18 Sept 2026 - Enphase IQ8 Microinverters Buying Guide: Sizing, Specs, and Backup
Buying guide for Enphase IQ8 microinverters. Compare IQ8M (330 VA) and IQ8A (366 VA), CEC efficiency, module pairings, and Sunlight Backup microgrid power.
Updated 18 Sept 2026 - Flexible Solar Panels: Where Bendy Beats Rigid
Flexible panels trade efficiency and lifespan for curves and grams — right on curved RV roofs, boat decks and weight-limited surfaces, wrong where glass fits.
Updated 17 Sept 2026 - FranklinWH aGate Energy Management System Buying Guide: Specs and Features
Technical buying guide for FranklinWH aGate: 280A busbar avoiding panel upgrades, universal solar compatibility, generator integration, and load shedding.
Updated 18 Sept 2026 - FranklinWH aPower 2 Battery Buying Guide: Specs, Power, and Capacity
Technical buying guide for FranklinWH aPower 2: 15 kWh LFP capacity, 10 kW continuous power, 5-ton A/C starting surge, 15-year warranty, and US manufacturing.
Updated 18 Sept 2026 - FranklinWH aPower 2 vs aPower S Comparison: Which Battery Fits Your Home?
Comparison of FranklinWH aPower 2 vs aPower S: AC-coupled retrofit vs all-in-one hybrid inverter, motor inrush surge, multi-plane solar, and 2026 US production.
Updated 18 Sept 2026 - FranklinWH aPower S Hybrid Battery Buying Guide: Specs and Solar Input
Technical buying guide for FranklinWH aPower S: 15 kWh LFP storage, 20 kW DC solar input, hybrid inverter, 8 kW charging, and 90.5% round-trip efficiency.
Updated 18 Sept 2026 - FranklinWH Meter Adapter Controller (MAC) Buying Guide: Specs and Setup
Technical buying guide for FranklinWH Meter Adapter Controller (MAC): plug-in meter collar for combo panels, 20-min install, 200A service, and UL 1741 safety.
Updated 18 Sept 2026 - How Long Do Solar Batteries Last? Cycles, Years, Warranty
Home solar batteries typically last 10-15 years, warrantied around 10 with a capacity floor of 60-70%. What cycles mean, and how to read a warranty.
Updated 17 Sept 2026 - How to Read a Solar Quote: The Nine Lines That Matter
A solar proposal is a sales document in an engineering costume. Nine lines carry all the information; the glossy production graph carries almost none.
Updated 17 Sept 2026 - Monocrystalline Solar Panels: Why They Won the Market
One crystal per cell, black instead of blue, and efficiency that ended the poly era: monocrystalline is now simply what 'solar panel' means. What it tells you.
Updated 17 Sept 2026 - Portable Solar Panels: What They CAN and CAN't Do
Folding panels are honest tools with a narrow job: recharging power stations and RV banks at camp. Watts versus reality, and when portable beats permanent.
Updated 17 Sept 2026 - Solar Panel Kits: What's in the Box and Who They Fit
A kit bundles panels, inverter, racking and wiring into one box — brilliant for sheds, RVs and off-grid cabins, complicated for whole homes. What's missing.
Updated 16 Sept 2026 - Solar Quotes: How to Audit Residential Proposals and Pricing
Audit residential solar quotes by normalizing cash price per watt, checking Section 25D 30% tax credit rules, and uncovering dealer financing fees.
Updated 18 Sept 2026 - Solar Sales Red Flags: Twelve Things That Should End the Meeting
Rooftop solar is a good product sold, too often, by a bad sales culture. Twelve behaviours that mean walk away, and four questions no honest rep minds.
Updated 17 Sept 2026 - Solar System for Home: The Complete Residential Equipment Guide
Understand the complete anatomy of a residential solar system, covering solar arrays, inverters, battery storage, smart subpanels, and net metering.
Updated 18 Sept 2026
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New to this? Read these three, in order.
- 400-Watt Solar Panels: The Workhorse Class, Explained
400 watts is residential solar's default panel: door-sized, about 1.4 kWh a day in average sun, twenty of them powering a home. What one panel really runs.
- Best Solar Panels for US Homes: Residential and Mobile Module Guide
Compare top solar panels for residential rooftops and mobile setups using verified datasheets for efficiency, degradation, and wind load ratings.
- Bifacial Solar Panels: When Two Faces Beat One
Glass-backed panels harvest light bouncing off whatever is beneath: single-digit gains over shingles, double-digit over gravel and snow. Where bifacial pays.