Battery Storage

7 independent, fact-checked articles about battery storage.

Virtual Power Plants: Getting Paid for Your Home Battery

A growing number of utilities will pay you to let them borrow spare capacity from your battery during grid stress events. Here's how virtual power plant programs actually work, and what they're really worth.

5 min read

Stacking Home Batteries: How Many Can You Add, and When Does It Make Sense?

Every major home battery is designed to scale beyond one unit. The decision isn't whether you can add more — it's whether you need more capacity, more power, or neither.

6 min read

LFP vs. NMC: Which Home Battery Chemistry Is Safer and Longer-Lasting?

Almost every home battery launched since 2022 uses a different chemistry than the generation before it. The switch to LFP isn't a marketing detail — it changes safety margin, cycle life, and total cost of ownership.

5 min read

How Long Will a Home Battery Actually Last During an Outage?

'This battery backs up your whole home' means very different things depending on what's plugged in. Here's how to estimate real runtime instead of relying on a marketing headline.

5 min read

Battery Round-Trip Efficiency: The Spec Sheet Number That Quietly Affects Your Savings

A battery never gives back exactly what you put into it. Round-trip efficiency is the gap — and it's bigger for some system architectures than the headline spec sheet number suggests.

5 min read

How Long Do Home Batteries Actually Last? Warranty and Degradation Explained

Battery warranties are typically written in both years and cycles, and the one that runs out first is the one that matters. Here's how to read a battery warranty correctly.

2 min read

Home Battery Storage Without Solar: Is It Worth It?

Batteries are usually sold as a solar add-on, but a growing number of homeowners are installing them standalone — for backup power or rate arbitrage. The math is different, and worth doing before you buy.

2 min read