GapReveal

A finished research run on an example topic, shown in full — the findings, the sources behind them and the product versions are all the run's own output, except that a product name may have been changed where it matched an existing brand.

Back to the run overview Home power backup

Experimental Quick win

SafeSwap

A guided bill-of-materials generator that converts a homeowner's risky DIY plan (car batteries, alternator charging, spare Li-ion cells) into a safe, code-compliant wiring and inverter setup at a fraction of branded system cost.

01

What to build

  • MVP

    An input flow that asks what DIY parts a user already has or is considering, then outputs a specific inverter size, fuse/breaker specs, and a wiring diagram reviewed against basic electrical code, plus links to licensed electricians for the panel tie-in step.

  • Why it can be better

    Forum threads show people wiring car batteries to inverters with zero safety guidance; no existing tool stops at anything beyond a capacity number, leaving this exact DIY-hack population unserved.

  • Revenue model

    Paid tiered guides ($15-$40) for specific wiring configurations, plus referral commissions from licensed electricians who complete the panel tie-in.

  • Target user

    Budget-constrained DIYers already improvising backup power with car batteries or scavenged EV alternator setups.

02

Context

The opportunity this answers

Build a brand-agnostic backup-sizing and load-matching advisor that recommends the exact battery, inverter, and panel setup for a specific home.

Why now

Backup brands have just pivoted from single-purpose portable power stations to whole-home marketing, splitting the market into incompatible tiers right as low-upfront-cost entrants like Base Power change the economics of adoption, so buyers face more confusing choices exactly when volatile, storm-driven search spikes push them to decide fast without any neutral way to compare branded tiers against their actual home loads.

User problems surfaced

5 findings7 sources

Back to the idea
  1. 01

    Nobody can size their system

    Buyers repeatedly ask how much battery capacity they actually need and get only anecdotal answers, with no reliable way to match capacity to their real home loads.

    Evidence

    Threads debate whether 1000Wh, 2000Wh or a full Powerwall-class system is the 'sweet spot,' and homeowners post asking what ties into the panel and handles everything automatically without a clear answer.

    Sources reddit.com (opens in a new tab) reddit.com (opens in a new tab)

  2. 02

    Confusing backup tiers

    The market has split into tiers (plug-in batteries, stackable portable kits, full whole-home systems) with wildly different capabilities, and buyers can't tell which tier covers their specific critical loads like EV chargers or HVAC until after purchase.

    Evidence

    A $1,500 Pila battery is shown unable to run a Level 2 EV charger or central heat pump, unlike an Enphase or Powerwall system, illustrating how similarly marketed 'whole-home backup' products actually cover very different load profiles.

    Sources youtube.com (opens in a new tab)

  3. 03

    Unsafe DIY backup hacks

    People resort to risky DIY setups (car batteries, EV alternator charging, spare Li-ion cells) because they can't afford or justify a five-figure branded system, but lack basic guidance on inverter sizing, wiring safety, or load calculations.

    Evidence

    One post asks how to wire car batteries to an inverter and calculate home energy usage with no clear answer, while another describes rigging an EV's 12V alternator through an EcoFlow charger to keep a separate battery topped up.

    Sources reddit.com (opens in a new tab) reddit.com (opens in a new tab)

  4. 04

    Server-rack backup underserved

    Niche always-on use cases like home server racks need backup sized for graceful shutdown runtime rather than whole-home coverage, and existing whole-home marketing doesn't address this segment.

    Evidence

    A homeowner building a NAS and network rack asks specifically for backup power sufficient for graceful shutdowns during extended outages, a need distinct from whole-home battery marketing focused on fridges, HVAC and EVs.

    Sources reddit.com (opens in a new tab)

  5. 05

    Battery vs generator tradeoff unclear

    Reviewers and buyers weigh battery systems against generators but face conflicting signals on long-term reliability versus convenience, without a neutral way to compare total cost and coverage across fuel and battery options for their specific home.

    Evidence

    Wirecutter notes battery-backup is a 'compelling alternative' to standby generators but still trails on proven long-haul reliability, citing a five-year Generac warranty versus decades of generator service life, leaving buyers to weigh tradeoffs alone.

    Sources nytimes.com (opens in a new tab)