Grant Mercer

Grant Mercer is the founding editor of Power Backup Lab. He leads the site's research process and editorial standards across backup power, portable power stations, home battery systems, and outage preparedness. The Power Backup Lab approach does not rely on marketing claims. Every recommendation is built from three sources: official manufacturer specifications, independent lab and field testing published by trusted third parties, and verified feedback from real owners who live with these products day to day. The goal is simple and practical guidance, with no hype, so readers can choose the right backup power setup for their home and budget.

Manual vs Automatic Transfer Switch: What’s the Difference and Which Do You Need?

July 16, 2026July 12, 2026 by Grant Mercer

Electrician installing a transfer switch

Manual switch, automatic switch or interlock kit: costs, code rules and which connection method fits your generator setup.

Is a Home Battery Backup Worth It Without Solar Panels?

July 16, 2026July 12, 2026 by Grant Mercer

Home battery without solar panels

A home battery works without solar. Whether it is worth it depends on three value streams, and this guide runs the real numbers.

Best Whole-House Battery Backup Systems in 2026 (Complete Guide)

July 16, 2026July 12, 2026 by Grant Mercer

The best whole-house battery systems compared: Tesla, Enphase, Franklin and more, with honest sizing advice for real homes.

How Much Does a Home Battery Backup System Cost? (With and Without Solar)

July 16, 2026July 12, 2026 by Grant Mercer

Home battery backup system cost quote

Installed prices, the 30 percent federal tax credit, incentives and a 10-year cost comparison against a standby generator.

Portable Power Station vs Whole House Generator vs Solar Battery: Which Backup System Is Right for You?

July 16, 2026July 11, 2026 by Grant Mercer

The three main paths to home backup power compared on cost, runtime and convenience, with a clear decision guide for every situation.

How to Calculate What Size Generator You Need (Step-by-Step Wattage Guide)

July 26, 2026July 11, 2026 by Grant Mercer

Calculating generator size with appliance wattage

A 7-step wattage method with a full appliance reference table and three worked examples, from a minimal kit to near whole-home power.

Best Home Backup Power Solutions for Every Budget ($200 to $20,000)

July 16, 2026July 11, 2026 by Grant Mercer

From a $200 power station to a $20,000 standby generator: what each budget tier actually covers in an outage and how to pick your level.

Inverter Generator vs Conventional Generator: What’s the Difference and Which Is Better?

July 16, 2026July 11, 2026 by Grant Mercer

Clean power, noise, fuel use and price per watt: what really separates inverter and conventional generators, and which fits your home.

EcoFlow Delta Pro 3 Review: Is It the Best Home Backup Power Station in 2026?

July 26, 2026July 11, 2026 by Grant Mercer

A research based review of the EcoFlow Delta Pro 3: real specs, what it powers in an outage, expansion options and where it falls short.

What Size Whole House Generator Do I Need? (Calculator Method + Chart)

July 26, 2026July 11, 2026 by Grant Mercer

A step by step method to size your standby generator, with appliance wattage tables and a full worked calculation for a 4-bedroom home.