AC-coupled and DC-coupled batteries both store solar energy—but they connect to your system in different places. This guide explains the difference in plain English, why DC-coupled can be more efficient for storage, why AC-coupled is often easiest for retrofits, and a decision table + installer questions to help you choose safely.
Round-trip efficiency tells you how much of the energy you put into a solar battery you actually get back out. This guide explains RTE in plain English, why AC-to-AC vs DC-to-DC matters, what typical values mean for your savings and backup runtime, and a quick checklist to compare storage quotes safely.
A solar battery has TWO important numbers: kWh (how much energy it stores) and kW (how much power it can deliver at once). This guide explains battery kW vs kWh with simple formulas, real product examples, and a quick table to estimate backup runtime—so you can compare quotes safely without DIY electrical steps.
Depth of Discharge (DoD) is the key spec that tells you how much of a battery’s “nameplate” capacity is actually usable. This guide explains DoD vs state of charge, how DoD affects lifespan, and a simple formula to estimate usable kWh and backup runtime—without risky DIY steps.
Microinverters and power optimizers both improve panel-level performance compared with traditional string inverters—but they work differently. This guide explains the differences, when each option makes sense, how warranties and maintenance compare, and a decision table you can use to choose confidently.
The DC/AC ratio (sometimes called inverter loading) explains why many solar systems have more panel “DC kW” than inverter “AC kW.” Learn what the ratio means, what clipping is, when a higher ratio is normal, and a checklist to compare quotes safely.
Comparing solar quotes isn’t just about the lowest price. Use this line-by-line checklist to normalize system size, production assumptions, warranties, scope, and financing—so you can choose the best value safely.
Your electric bill is the fastest way to size solar and predict savings—if you know what to look for. Learn how to read your bill before and after solar, decode kWh usage, fixed charges, TOU rates, and net metering credits, plus a simple worksheet to compare quotes safely.
Net metering can make solar savings bigger by turning extra daytime production into bill credits. Here’s how net metering works, how credits are calculated, what “net billing” changes, and a checklist of questions to ask before you sign a solar quote.
Performance Ratio (PR) is the “reality factor” that turns ideal solar math into real-world estimates. Learn what PR means, what lowers it, and what number to use when planning or comparing quotes.
