Winter at home · Kyivpower, heat, your own bank

Sector Kyiv · winter · autonomy

Surviveby the numbers

Not panic — arithmetic. Pick your bank, who is in the shelter, what must work and the schedule: the engine says how many hours the battery lasts, and citygen who can help in your district.

Your bank

Who is at home

What must work

Outage schedule

Energy tank

4hours of autonomy
window 4 h
Engine examplehomegen.backup_power_plan/1Data under review

Input: Two + a child; Basic set; schedule 4/4

A family of three: 4 h without power needs 0.42 kWh. The engine suggests the Portable power station class — 428 W, 0.70 kWh: it lasts ~4 h and recharges in 0.2 h of the 4 h with power.

Energy for 4 h without power
0.42 kWh
Inverter
428 W
Battery
0.70 kWh
Lasts
4 h
Recharge in 4 h of power
0.2 h
Class price (estimate)
UAH 17,000–35,000
00:0006:0012:0018:0024:00
  • no power
  • power on
  • charging 0.2 h
Devices in the calculation (5)
  • Fridge (class A+…A+++)120 W
  • Wi-Fi router + fibre terminal (ONT)15 W
  • LED lamp × 49 W
  • Phone charging × 310 W
  • Laptop × 260 W

What to do about it

  1. Portable power station. All in one case: battery, inverter, charger. Plugs into a socket, no installation. Devices connect to the station by cords or through a separate line with a switch.
  2. A power station plugs into a socket, no installation — that is how the engine describes this class.
  3. Keep the battery warm: in the cold the engine lowers usable capacity, and below freezing a LiFePO4 battery does not charge.
Assumptions, warnings and sources

Warnings

  • NoteStarting power: fridge — up to 700 W. The inverter must handle a 855 W peak.
  • NoteA pure sine wave inverter is needed (not “modified sine”) for the fridge compressor and electronic loads.
  • NoteA concept, not a design: the connection to the panel, cable sizes and protection are set by a licensed electrician from the equipment datasheets.
  • LowPart of the data comes from secondary sources or is an estimate — check before buying (see the sources list).

Assumptions

Engine text in Ukrainian.

  • Ліміт мережі на заряд — 3680 Вт (ввідний автомат 16 А); вкажіть свій номінал або виділену потужність.
  • Графік: 4 год без світла / 4 год зі світлом; найдовше вікно без світла — 4 год, найкоротше зі світлом — 4 год.
  • Постійні й циклічні прилади (холодильник, роутер, котел) можуть працювати одночасно; з приладів «за потребою» — найпотужніший плюс 30% решти.
  • Запас тривалої потужності інвертора ×1.25; одночасно стартує лише один двигун чи компресор.
  • Ємність АКБ = потреба / (DoD 90% × ККД інвертора × температурний коефіцієнт 0.98 при 18 °C); для класів — свій ККД і власне споживання інвертора.
  • Прилади «за потребою» без outage_hours працюють у вікно без світла пропорційно до своїх годин на добу.
  • Поки світло є, дім споживає ~105 Вт — це віднімається від ліміту мережі на заряд.
  • Потужність заряду не задано — для кожного класу взято верхню межу; у дешевих ДБЖ заряд слабший: вкажіть charger_w з паспорта.
  • Ресурс АКБ і старіння не враховано: до кінця строку служби ємність LiFePO4 падає до ~80 % — закладіть запас.

Sources

Your district

The provider directory is a fictional citygen sample that shows how search on your own bank works: these providers and addresses do not exist. The real directory is kept by an operator — every fact with a source and date.

districtleft bank3/6
Engine examplecitygen.city_resolve/1Data under review

Pozniaky

Input: You: Pozniaky; your own bank only; need — works during outages

Your bank is the left bank. The sample has providers in 3 of 6 categories; where it is empty, we say so.

Bank
left bank
District
Дарницький
Categories on the bank
3 / 6
  • Backup power

    [SAMPLE] Монтаж генераторів «Бровари» (вигаданий)

    same bank

    Works during outagesunknown
  • Electrician

    [SAMPLE] Електрик «Деснянський» (вигаданий зразок)

    same bank

    Works during outagesunknown
  • Plumber

    Nothing on your bank in the directory. On the other bank: 1; the service does not route you across the river.

  • Windows & doors

    [SAMPLE] Вікна «Лівий берег» (вигаданий зразок)

    same district

    Works during outagesunknown
  • Renovation

    Nothing on your bank in the directory. On the other bank: 1; the service does not route you across the river.

  • Furniture

    Nothing on your bank in the directory. On the other bank: 1; the service does not route you across the river.

Assumptions, warnings and sources

Warnings

  • NoteCheck air-raid alerts and the state of the bridges in official sources (the «Kyiv Digital» app, «Air Alert»). The service does not know the current state of bridges, roads or air-raid alerts and does not promise a safe trip; power facts come from the directory operator with a date.
  • LowSome reference sources (geography, registers) are flagged for verification.

Assumptions

Engine text in Ukrainian.

  • Берег визначено за місцем «Позняки»: лівий берег.
  • locality = {city, bank, district}; для передмістя district — назва передмістя.

Sources

Heat, water, fire — no myths

We only count what the engines have rules and data for. Where they do not, we say so.

Heat

We do not calculate apartment heating

The engines' knowledge base has no heating rules (ДБН В.2.5-67 is not loaded), so the site gives no indoor temperature without central heating and no cooling rate. We only count what the engine can: a gas boiler and a heater as loads on the backup.

Water

We do not calculate water and building pressure

Building pumps, pressure and hot water depend on the building and the water utility. The engines have no rules or data for this — so no promises. Ask your condominium or building manager.

Hob

The engine does not count a gas hob

In the engine's catalogue a gas hob is not an electric device. Whether it lights without power (electric ignition, flame control) — see your hob's datasheet. An induction hob is counted: pick “+ induction hob” and watch the inverter grow.

On backupEnergy per windowInverterClass from the engineClass price (estimate)
No heat: basic set0.42 kWh428 WPortable power stationUAH 17,000–35,000
+ gas boiler (controls and pump)0.81 kWh644 WUPS + LiFePO4 batteryUAH 19,000–43,000
+ oil-filled heater1.62 kWh2,114 WUPS + LiFePO4 batteryUAH 32,000–65,000

Bridges and alerts — official only

The site does not know the current state of the bridges or air-raid alerts, and does not tell you whether a trip is safe.

A concept, not a design: how backup is wired to the panel, boiler or hob is decided by a licensed electrician from the equipment datasheets. Class prices are indicative ranges, not a price list.

Neutral — and how we make money

  • Backup classes — no brands, no partners, in the engine's order: fit first, then price.
  • Providers: your bank and your needs first, then proximity, then name. Listing fees do not affect the order — the directory does not even store them.
  • No ratings, reviews or “guarantees”.
  • No partners are connected yet: the “Get offers” button is inactive.

Full disclosure on tools.furnigen.app

Partners are not connected yet. When they are: neutral order, your contacts go only to the partner you name and only with your consent. How we make money

Use it inside Claude or ChatGPT

coming soon

The same calculator runs as an MCP server: your assistant calls it and answers with these numbers, assumptions and sources.

Server address (not live yet)https://mcp.furnigen.app/homegen/mcp
  1. Claude: Settings → Connectors → Add custom connector → paste the address.
  2. ChatGPT: Settings → Apps & Connectors → create a connector (developer mode) → paste the address.

The public server opens after the gateway launch. Until then this address does not answer.

Questions

How much energy does one outage need?

For a family of three with the basic set (fridge, router, lamps, chargers, laptops) and 4 h without power, the homegen engine counts 0.42 kWh per outage window. Your own household, devices and schedule are in the calculator above.

Will the site show me how to get to the other bank?

No. Search covers your own bank only: in the sample directory the left bank has providers in 3 of 6 categories, the right bank in 3 of 6. Where it is empty, we say so. Check bridges and alerts in «Kyiv Digital» and «Air Alert».

Can the battery live on the balcony?

The engine checks battery temperature: at -5 °C a LiFePO4 battery does not charge — no class fits. Keep the battery in a warm room.

What about heat without central heating?

We do not calculate it: the engines have no heating rules, so we promise no temperatures. We only count a gas boiler or a heater as a load on the backup.

Where do the numbers come from, and how exact are they?

From the homegen and citygen engines; examples computed on Oct 6, 2026. Class prices are indicative ranges, some sources are marked “data under review”. A concept, not a design: a licensed electrician does the wiring.

Count your reserveSafety