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[@CityPrepping] I Tested the CHEAPEST Whole-Home Solar Generator (Is It Any Good?)

· 4 min read
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@CityPrepping - "I Tested the CHEAPEST Whole-Home Solar Generator (Is It Any Good?)"

Link: https://youtu.be/hy1nd8Lxxm8

Short Summary​

The Oops Guardian 6000 is a solar generator offering true 240-volt output and significant battery capacity at a competitive price. While it effectively provides whole-home backup power and qualifies for tax credits, real-world testing revealed limitations with its solar input capabilities. Despite this, its affordability makes it a strong contender for emergency backup, UPS functionality, and power arbitrage for homeowners.

Key Quotes​

Key Quotes​

  1. "At the time of recording this video, this unit, the actual unit down here, is selling for $1,699. Now, I realize that's not pocket change and a lot of my viewers are on a tight budget, but for those that have money set aside for a unit like this, namely a system that can output 240 volts, that price is extremely low. The next closest comparable unit on the market is about $1,000 more expensive."
  2. "We let it sit for 24 hours with the AC inverter on, and during that time, the battery dropped to 64% from 100%. meaning it used 1,656 watts over 24 hours, which comes out to 69 watts per hour."
  3. "The unit advertises 2100 watts of solar input capabilities, but the MPPPT on this model accepts only 18 to 140 volts. Now, since most standard rooftop solar panels exceed that voltage when connected in series, you're really limited to approximately three full-size 400 watt panels. That translates to roughly 1,00 to,200 watts of realworld input under normal conditions."
  4. "In terms of solar performance, the Guardian 6000 falls into the poor category. The unit simply can't take advantage of its full 2100 W solar spec in any practical realworld setup using standard panels."
  5. "After testing nearly every major solar generator on the market over the last several years, the standout strength of the Guardian 6000 is simple. Its affordability."

Detailed Summary​

  • The Oops Guardian 6000 is a solar generator offering true 240-volt output and significant battery capacity at a competitive price, designed for home backup power.
  • The review evaluates its ability to solve backup power problems, verifies manufacturer claims, and assesses its recommendation for the community, noting its low price is due to certain test results.
  • Priced at $1,699, it is significantly cheaper than comparable 240V units, making it an attractive option for budget-conscious buyers.
  • Key specs include 6,000 watts continuous output (9,000W surge), dual 120V + 240V split phase from a single unit, portability, and expandable lithium iron phosphate batteries (4.6 kWh to 41 kWh).
  • It qualifies for a 30% federal clean energy tax credit and supports versatile charging options, including AC (120/240V) and advertised 2100W solar input.
  • Testing Results:
    • AC Idle Consumption: Used 69 watts per hour (1,656W over 24 hours), which is comparable to other units, with an app feature to control AC on-time.
    • Inverter Efficiency: Achieved 84% efficiency (3.86 kWh usable from 4.6 kWh rated), typical for inverter losses.
    • Emergency Power Supply (EPS): Successfully switched over in under 20 milliseconds, demonstrating its ability to keep devices like PCs powered during an AC source interruption.
    • Whole Home 240V Output: Capable of powering multiple major household appliances simultaneously up to 6,000 watts, supporting both legs of a home's electrical panel.
    • Solar Input Limitations (Major Issue): Despite advertised 2100W, the MPPPT's 18-140V limit restricts practical solar input to roughly 1,000-1,200 watts with standard panels, falling short of expectations.
    • AC Charging: Performed as expected, offering fast charge (1800W) and an adjustable custom rate via the app, compatible with inverter generators; supports simultaneous AC and solar charging.
  • The mobile app provides standard controls and a unique task scheduling feature, enabling power arbitrage to save money by using battery power during peak electricity rates.
  • Conclusion: The Guardian 6000 is ideal for homeowners seeking practical, affordable whole-home backup, dependable UPS functionality, or electricity cost savings through arbitrage.
  • It is not suitable for full-time off-grid users with large, high-voltage solar arrays due to its solar input limitations.
  • An optimal setup involves pairing the unit with around 1,200 watts of rigid solar panels and an inverter generator for a cost-effective backup solution.
  • Its primary advantage is its affordability, making it a compelling option despite the solar configuration issue.