Comparison

Renogy 100 Watt 12 Volt Monocrystalline Solar Panel vs EcoFlow DELTA 2 Portable Power Station (1024Wh): Which Should You Buy? (2026)

By the Daniel Bohannon team · 2026-07-17

Let's clear something up before you spend a dime: these two products don't compete. The Renogy 100W is a bare solar panel — a component that makes electricity and does nothing else. The EcoFlow DELTA 2 is a finished battery system with outlets on the front. People cross-shop them because both dominate the same search results, but the real question isn't "which is better" — it's whether you want to build a power system or buy one.

The picks

What you're actually buying

The Renogy panel is the off-grid community's standard brick: a rigid, aluminum-framed glass panel around $79–$110, made to be bolted to an RV roof, cabin, or ground mount and left there. On its own it's useless. It has no USB ports, no outlets, no battery. It needs a charge controller, a battery bank, proper wiring, and an inverter if you want AC power. That's not a knock — it's the point. Components are cheap per watt precisely because you're supplying the labor and the know-how, and the standardized size means adding a second or third panel later is trivial.

The DELTA 2 is the opposite philosophy. It's a 1024Wh LiFePO4 battery, inverter, charge controller, and app rolled into one box for $649–$999 (it dips toward $499–$599 on sale often enough that paying full price is optional). Plug it into the wall, hit roughly 80% in under 50 minutes, and its 1800W output runs a fridge, CPAP, or most other household essentials during an outage. Down the road you can add a second battery to double capacity or feed it up to 500W of solar.

How to actually decide

Start with temperament, not specs. If crimping lugs, sizing fuses, and wiring a charge controller sounds like a satisfying weekend, the Renogy path gives you far more capacity per dollar and a system you understand down to the last connector. If it sounds like a chore you'll put off until the next blackout, buy the EcoFlow and be done — a half-built solar setup helps nobody.

Then check the math honestly. The panel's $79–$110 sticker is not the system cost; the controller, battery, and cabling can multiply it. Meanwhile the DELTA 2's price doesn't include solar — panels are sold separately, so true off-grid capability costs more than the box.

Who should skip what: skip the Renogy if you've never touched 12V wiring and don't want to learn — you'd just own a glass rectangle. Skip the DELTA 2 if you're building a permanent cabin or trailer bank, where DIY components beat it badly on cost per watt-hour, or if 27 pounds is more than you want to haul; it also gets audibly fan-loud during fast charging.

Here's the part most comparison pages miss: these two stack. The DELTA 2 accepts third-party panels, and rigid Renogy panels are a common, budget-friendly way to feed it. Plenty of people buy the station first for blackout insurance, then add panels once they're tired of hunting for wall outlets.

Bottom line

If your question is "what keeps the fridge running when the power dies," it's the DELTA 2 — buy it on sale. If it's "how do I keep batteries topped up on the trailer roof for cheap," it's the Renogy, probably two or three of them. And if you own the EcoFlow and want it charging off the sun, the Renogy is a sensible answer to that question too.