Use the roof well
Consider orientation, shading, structure, roof features and safe installation.
Solar PV
Solar power from your roof, matched to demand.
PHT plans module layout, inverter, protection, self-consumption and future extensions as one coordinated design.
Roof assessmentYield estimateInstallationGrid registration
Quick answer
A good PV system uses suitable roof areas consistently, allows for shading and the grid connection, and is not sold on a generic kWp figure alone. The key question is how the power can be used directly, stored or converted into useful heat.
Solar PV
What matters when sizing the system
Coordinate components
Select modules, inverter, protection and monitoring as a system.
Prepare self-consumption
Allow for batteries, heat pumps, hot water, EV charging and controls.
Manage the process
Coordinate grid application, metering, incentives and commissioning.
Process
From the first photograph to a working installation.
Assessment
Record the roof, consumption and technical baseline.
Design
Calculate layout, yield, inverter and extension options.
Installation
Install mounting, modules, electrical equipment and protection.
Commissioning
Check metering, monitoring, documentation and controls.
Solar PV
What matters when sizing the system
More than roof area
Module efficiency, shading, grid capacity and demand determine the sensible size.
Separate yield from self-consumption
High annual production is valuable, but timing and use determine the financial result.
Protect future options
Spare cable routes, interfaces and plant-room space can simplify later storage or heat integration.
Local SEO · GEO
Serving Pfäffikon SZ, Freienbach, Wollerau, Lachen, the Canton of Schwyz, the Lake Zurich region, Glarus and, depending on the project, wider areas.
Local SEO should not consist of copied town pages. A real project depends on the grid connection, current tariffs, shading, building services, permissions and measured demand. PHT combines these local facts with an integrated system design.
- Pfäffikon SZ & Freienbach
- Wollerau & Lachen
- Schwyz & Einsiedeln
- Zürichsee / Lake Zurich
- Glarus / Glarona
Frequently asked questions
Frequently asked questions
Is an east-west roof worthwhile?
Often yes. It can produce over a longer part of the day and match household or business demand well. A specific shading and yield assessment is still required.
How large should the PV system be?
It depends on the roof, grid, electricity use, heat pump, EVs, storage concept and objectives. Sizing only to current household consumption is often too narrow.
Is a battery essential?
No. Direct use, production timing, tariffs and other flexible loads should be assessed first.
What incentives are available?
Schemes change. PHT checks the conditions that apply when the project is prepared.
Related content
Related content
Have your solar project assessed
Send the address, annual consumption and roof photographs. PHT will assess layout, technical feasibility and useful next steps.