What does PHT need for an initial assessment?

The address, annual electricity consumption, photos of the roof, meter cabinet and plant room, plus information on the current heating system and future loads such as a heat pump or electric car.

Is the solar calculator embedded on the home page?

No. To keep the home page fast and uncluttered, the full calculator is available only through the menu and dedicated buttons.

Can PHT improve an existing installation?

Yes. Existing PV can be extended with storage, energy management, hot-water integration, a heat pump or other controllable loads.

Can the system be expanded later?

The design considers inverter capacity, interfaces, physical space, metering and controls from the outset, reducing later alterations.

Solar PV from Pfäffikon SZ

Solar power. Simply well planned.

Solar PV, batteries, heat and controls – personally planned and carefully delivered.

Personal adviceClear planningRegional delivery

Start project check →References Send photos via WhatsApp

Direct contactOne contact from the first idea to the finished system.

Everything coordinatedPV, storage, heat and controls in one plan.

Regional serviceSchwyz, Lake Zurich, Glarus and nearby.

Solar funding 2026CHF 1,800–12,000*Example from 5 to just under 30 kWp

Funding at a glance

Pronovo pays fixed contributions per kWp for typical rooftop and integrated systems. Local grants and a possible tax deduction may be added.

*Guide value from 5 to just under 30 kWp: rooftop CHF 360/kWp, integrated CHF 400/kWp. Lower capacity rates apply from 30 kWp. Eligibility and the final amount are confirmed by the relevant authorities.

Include funding →Open the official Pronovo calculator →

New reference

Solar PV in practice

Three selected views of completed solar PV projects.

View all references →

Top-down view of a completed solar PV reference — Top-down view

Aerial view of a home with a solar PV system — Home from the air

Vertical top-down view of a home with a solar PV system — Roof from above

Services

What PHT delivers

Five clear areas. Choose the relevant topic for details.

Solar PVAssess the roof, plan the system and generate solar power.Learn more →

Battery storageStore solar power and use it later.Learn more →

EV chargingConnect the wallbox, solar surplus and load management.Learn more →

Solar surplusDirect energy to heat, EV charging or flexible loads.Learn more →

Mining and heatGenerate computing value and recover useful heat.Learn more →

Live energy flow for an intelligently controlled solar PV, battery, heating and load system — Example view of live energy-flow monitoring.

Energy optimisation

Coordinate solar PV, storage and heat intelligently.

Live data, forecasts and flexible loads are combined into an understandable automation strategy.

Patrick Prünster combines experience in electrical, heating and control technology, including work in the Bosch Home Comfort environment, with practical energy planning based on real measurements.

Live measurementsSolar forecastAutomatic control

View energy optimisation →Experience and approach

How it works