title: "Briefing: Battery Storage Trends (Week of Jan 26, 2026)" date: 2026-01-26 tags: ["Battery", "Storage", "Markets", "Technology"] summary: "Home battery pricing, new product launches, and the shift toward LFP chemistry in residential storage."
Battery Storage Trends (Week of Jan 26, 2026)
3 things to know
- LFP (lithium iron phosphate) has become the dominant chemistry in residential storage. Tesla Powerwall 3, Enphase IQ 5P, Franklin WH, and most new entrants use LFP — offering 4,000–10,000 cycle life and near-zero thermal runaway risk.
- Installed costs for residential batteries: $800–$1,200/kWh (before incentives). The 30% ITC brings effective costs to $560–$840/kWh. For a 13.5 kWh system, that's roughly $7,500–$11,300 after credits.
- Whole-home backup is becoming standard. Newer systems (Powerwall 3, Franklin WH aGate) manage the entire electrical panel without requiring a critical loads subpanel — reducing installation cost and complexity.
Market signal
Battery attach rates (percentage of new solar installations that include storage) are rising: ~30% nationally, ~60%+ in California and Hawaii. As net metering policies shift to net billing, batteries become essential for maximizing solar value.