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

Untapped Quick win

Critload

A compatibility engine that takes a home's specific critical loads (EV charger, HVAC, fridge, server rack) and cross-references them against the actual published specs of EcoFlow, Anker SOLIX, BLUETTI, Base, Enphase and Powerwall tiers to flag exactly which named products can and cannot cover the load.

01

What to build

  • MVP

    A structured database of surge/continuous wattage specs for the top 15 branded backup SKUs, paired with a load-input wizard that outputs a pass/fail compatibility grid per product, launched as a standalone web tool.

  • Why it can be better

    Every existing calculator, from GitHub scripts to Sol-Ark's vendor tool, outputs a generic kWh number; none flag that a $1,500 Pila can't run a Level 2 EV charger or heat pump the way this tool does by name.

  • Revenue model

    Lead-generation fees from battery brands and installers who pay per qualified match referred, plus a $9 one-time detailed PDF report for consumers who want the full compatibility grid.

  • Target user

    Homeowners with at least one demanding critical load (EV, HVAC, server rack) comparing specific branded products before buying.

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.

Existing solutions

9 findings20 sources

Back to the idea
  1. 01

    Open-source appliance-list sizing calculators (GreenInvest-Pakistan, Rasa Solar-Calculator, home-battery-calculator, solar-sizing-calculator, battery-calculator, hass_solar_and_battery_calculator, solbatterycalc, inverter-calculator)

    Small GitHub tools that take an appliance list or energy-usage export and output solar panel count, inverter size, and battery bank capacity for a home, often region-specific (Pakistan, Ghana, Nigeria) or tied to a Home Assistant setup.

    Falls short

    Built as single-purpose, DIY scripts rather than products; none cross-reference real branded battery/inverter SKUs (EcoFlow, Anker SOLIX, BLUETTI, Enphase, Powerwall) to say which can or cannot cover a given load, none address EV chargers, HVAC or server-rack runtime specifically, and most have zero or near-zero adoption (0-2 stars) with no ongoing maintenance.

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

  2. 02

    Generic web battery-sizing calculators (Unbound Solar, WattMath, EnergyScout, TheCalcs, LithiumBattery.online, BatteryCalculators.com, DIY Smart Home Hub, SolarChoice, AltE Store, Solar Insure, Paradise Energy, SolarCalculator.com.au)

    Free web calculators that convert daily kWh usage or a critical-load list into a recommended battery/inverter kWh capacity, some naming Powerwall vs. Enphase IQ Battery as reference points or estimating backup runtime and federal ITC eligibility.

    Falls short

    Each tool sizes capacity in isolation using generic assumptions (depth of discharge, inefficiency factors) but doesn't check compatibility against specific product tiers — none flag that a $1,500 plug-in battery can't run a Level 2 EV charger or heat-pump, none offer a bill-of-materials with wiring guidance for safe DIY setups, and none compare battery cost/reliability against a standby generator tailored to outage history.

    Sources unboundsolar.com (opens in a new tab) wattmath.com (opens in a new tab) energyscout.org (opens in a new tab) thecalcs.com (opens in a new tab) lithiumbattery.online (opens in a new tab) batterycalculators.com (opens in a new tab) diysmarthomehub.com (opens in a new tab) solarchoice.net.au (opens in a new tab)

  3. 03

    Manufacturer/installer-branded sizing tools (Sol-Ark, HomeGrid, Solar Insure)

    Vendor-hosted sizing tools that recommend battery bank size, hybrid inverter size, and solar panel count based on sunlight hours, appliance loads, or a single month of highest electricity usage, assuming pairing with that vendor's own solar/battery hardware.

    Falls short

    Sizing logic is tied to the vendor's own product line rather than being brand-agnostic, so it can't objectively compare EcoFlow, Anker SOLIX, BLUETTI, Base, Enphase and Powerwall tiers against each other, and it assumes an existing or planned solar array rather than addressing pure backup-only or server-rack-runtime scenarios.

    Sources homegridenergy.com (opens in a new tab) sol-ark.com (opens in a new tab) solarinsure.com (opens in a new tab)

  4. 04

    DIY/off-grid community discussion (Reddit r/SolarDIY)

    Forum threads where people ask for a trustworthy calculator to size a battery for an off-peak or backup-only system and share informal advice.

    Falls short

    No calculator or tool is actually delivered in these threads — just unanswered requests, confirming buyers still lack a neutral sizing resource and are left comparing anecdotal answers.

    Sources reddit.com (opens in a new tab)

Uncovered gaps

5 gaps

  1. 01

    No brand-vs-load compatibility check

    No tool cross-references a home's specific critical loads (EV charger, HVAC, server rack) against the real specs of named branded tiers like EcoFlow, Anker SOLIX, BLUETTI, Base, Enphase and Powerwall to flag which can or cannot cover them — every existing calculator just outputs a generic kWh number.

  2. 02

    Missing safe wiring guidance

    None of the sizing tools produce a safe bill-of-materials (inverter type, wiring, breaker/panel tie-in) to replace risky DIY car-battery or alternator-charging setups; they stop at a capacity number.

  3. 03

    Server-rack runtime unaddressed

    No calculator addresses the narrow always-on server-rack/NAS backup use case, which needs runtime for graceful shutdown rather than whole-home coverage.

  4. 04

    No generator cost comparison

    No neutral tool compares total cost and long-term reliability of battery backup versus a standby generator tailored to a household's actual outage frequency and budget.

  5. 05

    Not built for post-outage urgency

    Sizing tools are static one-time calculators rather than tools built for the moment demand actually spikes — right after an outage — when people need fast, trustworthy answers instead of a vendor's marketing page.