Guides — United States
Every guide answers its question in the first two sentences, dates every price, and names every source. 434 published, grouped into the questions buyers actually ask.
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Start with your question
What should I buy, and how do I not get cheated?
29 guides
FixesWhy is my inverter beeping?
5 guides
SystemsHow do I size it, and what changed with net billing?
86 guides
ElectricShould I go electric, and what will it really cost per km?
21 guides
MoneySchemes, instalments, loans — what can I actually get?
288 guides
ReportsWhat do the numbers say?
5 guides
All guides — page 1 of 19
Buying
What should I buy, and how do I not get cheated?
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.