VOLTER

Take control of your home energy

Inverter monitoring, real-time energy prices, Home Assistant integration — all in one.

Join beta

What works now

SEMS

GoodWe monitoring

Available

Real-time inverter data via SEMS cloud

Home Assistant

Available

Local WebSocket with auto-discovery, sub-second telemetry, cloud fallback

PLN

Energy prices

Available

Polish TGE + Pstryk dynamic tariffs, hourly import and export rates

NOW

Nowcasting

Available

Same-day forecast corrections from live production data

KAL

Hourly calibration

Available

Kalman filter stratified by cloud conditions — learns from every hour

OPT

Energy optimizer

Available

7 operating modes, 24-hour smart schedules. Works with any inverter via HA

FIN

Financial analytics

Available

Real-time profit tracking, daily savings, cost breakdown

What's coming

EDGE

Volter Box

Planned

Edge device on Raspberry Pi — local control, no cloud

INV

More inverters

Planned

Priority set by community voting

EV chargers

Planned

Smart charging based on production and prices

HEAT

Heat pumps

Planned

Heating optimization based on forecast and tariffs

IOT

Smart plugs

Planned

Automatic appliance management

INTL

More countries

Planned

Dynamic tariffs beyond Poland

From forecast to control

Start with Volcast to understand your production. Move to Volter to control it.

Volcast → Volter Beta →

Join early access

I'm a solo developer. Early access means I value your feedback — but response times won't be instant.