Tools

One data backbone feeds studies, articles and software. This page gathers the tools that put it to work, from an offline phone to the public API.

Android app | offline | free

Kuma PV

PV sizing in your pocket: from picking a prefecture to the final report, the app walks through sizing a home solar system, fully offline, on Kuma Guinean data.

Availability

The app is finished and headed to Google Play. The install link will be published on this page.

Read the privacy policy →

Kuma PV home screen: estimate a solar system before committing, with the app boundaries stated plainly.

The journey, in five screens

  1. Location screen: administrative region list, then prefecture list.

    01 Location, region then prefecture

  2. Demand screen: household appliances with quantities and hours of use.

    02 Demand, appliance by appliance

  3. Results screen: the recommended system explained in plain words, from the worst month to the starting surge.

    03 The recommended system

  4. Calculation chain screen: the reasoning that leads to the panel count.

    04 The calculation chain

  5. Report screen: the generated document, ready to download or share over WhatsApp.

    05 The report, ready to share

  • Offline, no account, no tracking

    Everything lives on the phone: the engine, the data and the reports. No sign-up, no identifiers, no network needed once installed.

  • Country data on board

    A signed data pack covers all 34 prefectures: irradiation, temperature, worst month, with the satellite bias measured at the Kankan ground station.

  • Demand built appliance by appliance

    Appliances, day and night hours, then the actual setup: off-grid, grid backup or hybrid.

  • Results as ranges

    Peak power and storage sized on the worst month, for lead-acid and lithium alike, with uncertainty shown rather than hidden.

  • The calculation, explained

    The app shows why that panel count, step by step, and gives the questions to ask an installer before signing.

  • A report that travels

    Reports download and share over WhatsApp, and carry a signed QR code designed for independent verification of the numbers.

Live today

Four tools that run in the browser, wired to the same public reference.

Maps

Map explorer

Every covered prefecture on a map, with series to browse and download.

Open

Quality

Uncertainty atlas

Cross-source disagreement measured locality by locality: where the numbers are firm, where caution applies.

Open

Compute

Python workbench

pandas, numpy and matplotlib in the browser, nothing to install, on catalog data.

Open

Machine to machine

Public API

REST, versioned JSON, free self-service key: the data behind the deliverables, queryable directly.

Open

Missing a tool?

Kuma tools grow out of field needs. Tell us about yours: if the data backbone can carry it, it belongs on this page.

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