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Home Solar Backup System Review

Jun 18, 2025,

Overview

This review provides an in-depth analysis and hands-on experience with the EcoFlow Delta Pro Ultra (DPU) and Smart Home Panel 2 (SHP2) as a modular, high-capacity solar backup system for home use, including installation, functionality, energy savings, and cost-effectiveness.

Importance of Backup Solar Solutions

  • Power outages can be dangerous, especially in extreme climates like Texas.
  • Backup solar ensures energy security, contributes to sustainability, and can result in significant savings.
  • Eligible for a 30% solar tax incentive.

EcoFlow Delta Pro Ultra (DPU) System Features

  • Modular setup: Two inverters and five batteries (three on one, two on another).
  • Each battery provides 6.1 kWh; up to five batteries per inverter.
  • 7,200W sustained output; higher short burst capacity.
  • 30 amp 240V plug and multiple AC/DC outputs.
  • Up to 5,600W solar input with high/low voltage flexibility.
  • Stackable design on wheeled carts for mobility.
  • Improvements over previous models: quieter operation, better screen placement, and streamlined plugs.
  • Versatile use: powers major appliances, electric car charging, and can serve as standalone or integrated backup.

Smart Home Panel 2 (SHP2) Integration

  • Acts as a sub-panel with smart features: automatic transfer, time-of-use scheduling, storm guard.
  • Integrates up to three inverters for whole-home backup (up to 12 circuits, more with tandem breakers).
  • Enables faster charging and efficient circuit management.
  • Requires professional installation.

Installation Experience

  • Hardware shipped in multiple boxes; set-up is physically demanding due to weight.
  • Solar setup straightforward with standard connectors; custom cable assembly recommended.
  • SHP2 installation best handled by an experienced electrician; process took 5–6 hours and cost ~$2,000.
  • EcoFlow provided consultation; local electrician executed final installation.

Performance and Daily Use

  • System powered 80% of home circuits, including large appliances.
  • Functioned quietly and reliably during severe power outages.
  • Minimal maintenance required; app integration improved post-SHP2 but savings data is still inaccurate.
  • Noted significant reduction in electricity bills despite increased use.

Cost, Payback, and Savings

  • Total hardware and installation: ~$18,000; solar panels and cabling: +$2,500.
  • Estimated annual savings: ~$2,200–$2,500; projected 6-year payback period, potentially shorter.
  • Tax credits and utility plan changes further reduced costs.

Drawbacks and Limitations

  • High initial expense; DPU occupies significant space and is not wall-mountable.
  • App interface still has usability issues.
  • Some system limitations: SHP2 cannot force battery use below set thresholds.
  • Customer service is variable, but user communities are helpful.

Comparison to Competitors

  • Main competition: Anker SOLIX 3800 (lower solar input, less suitable for full backup).
  • DPU offers greater total capacity and solar input, but less plug flexibility than some rivals.

Recommendations / Advice

  • Professional installation for SHP2 is highly recommended.
  • EcoFlow system best suited for those seeking a scalable, all-in-one solar backup with robust support and warranty.
  • While costly, the system offers long-term savings and strong performance for high-demand households.

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