# EnergyHouse.top

> Free home energy calculator — estimate solar, heat pump, battery, and other renewable equipment output, costs, and payback period in seconds. Supports English, Russian, Polish, and German.

EnergyHouse.top is a web application that helps homeowners evaluate the economic and energy viability of installing renewable energy and smart-home equipment. Users configure their location, house parameters, and equipment mix; the calculator returns annual energy production/consumption, grid import/export balance, CO₂ savings, and payback period.

## Pages

- [Home / Calculator (EN)](https://energyhouse.top/): Interactive energy balance calculator in English
- [Calculator (RU)](https://energyhouse.top/ru): Calculator in Russian
- [Calculator (PL)](https://energyhouse.top/pl): Calculator in Polish
- [Calculator (DE)](https://energyhouse.top/de): Calculator in German
- [Blog (EN)](https://energyhouse.top/blog): Articles on solar panels, heat pumps, battery storage, wind turbines, and HRV ventilation
- [Blog (RU)](https://energyhouse.top/ru/blog): Blog in Russian
- [Blog (PL)](https://energyhouse.top/pl/blog): Blog in Polish
- [Blog (DE)](https://energyhouse.top/de/blog): Blog in German
- [Contacts (EN)](https://energyhouse.top/contacts): Contact information

## Calculator Inputs

**Location** — region preset (Warsaw, Berlin, London, Paris, Madrid, Amsterdam, Zurich, Stockholm, Prague, Vienna, Kyiv) or custom lat/lon; electricity import and export tariffs (€/kWh).

**House** — plot size (m²), house size (m²), heated area (m²), number of floors, basement presence, insulation class (Passive / Good / Average / Poor), target indoor temperature (°C), number of residents, sewage type.

**Season profile** — Summer / Winter / Average consumption scenario.

**Equipment** — any combination of:
- Solar Roof PV (kWp)
- Ground PV Array (kWp)
- Wind Turbine (kW)
- Heat Pump — air-to-air, air-to-water, or ground-source (kW, COP)
- Radiators / Underfloor Heating
- Hot Water Tank (L)
- DHW Boiler
- Battery storage LiFePO4 (kWh)
- EV Charger (kW, km/year, kWh/100 km)
- Solid Fuel Boiler / Gas Boiler
- Solar Thermal Collectors (m²)
- Solar Air Collector (m²)
- HRV Ventilation
- Smart Home system
- Backup Generator (kW)
- Water Well (depth m)
- Inverter (kW)
- Starlink Internet
- Composter
- Ground Loop Collector (m)

## Blog Articles

- **Solar Panels in 2025: What Efficiency Can You Really Expect?** — residential panel efficiency (22–24%), orientation, shading, temperature effects, payback 7–10 years
- **Heat Pumps Explained: COP, Types, and Why They Beat Gas in Most Cases** — air-to-air, air-to-water, ground-source; COP explained; when gas still wins
- **Battery Storage for Homes: Is It Worth It in 2025?** — LiFePO4 vs NMC, sizing, self-consumption increase, payback analysis
- **Residential Wind Turbines: Realistic Output and When They Make Sense** — micro-wind economics, minimum wind speed requirements, urban vs rural
- **HRV Ventilation: Fresh Air Without Heat Loss** — heat recovery efficiency, CO₂ control, installation tips

## Technical Stack

- React 18 + Vite (SPA)
- Tailwind CSS + shadcn/ui components
- React Router v6 (client-side routing, language-prefixed paths)
- i18n: EN / RU / PL / DE via static translation objects
- Backend: Base44 platform (auth, data)

## Sitemap

https://energyhouse.top/sitemap.xml