Right-sized capacity
Allow for evening demand, seasons and future loads.
Battery storage
Store solar power when it serves the building.
PHT sizes storage from the load profile, PV production, usable capacity, power and the desired operating strategy.
Usable capacityCharge powerEnergy managementExpandability
Quick answer
A battery moves energy from the time of production to later hours; it does not create additional energy. It should therefore charge and discharge regularly in normal operation without excessive investment, unused capacity or avoidable losses.
Battery storage
Battery storage is not a single function
Power as well as kWh
Check charge/discharge power and inverter limits.
Clear operating modes
Prioritise self-consumption, tariffs, peak control or reserve operation.
Safe installation
Consider location, temperature, protection, isolation and manufacturer requirements.
Process
From the first photograph to a working installation.
Review data
Analyse consumption and surplus on representative days.
Model the profile
Estimate usable capacity, cycling and charging windows.
Integrate the system
Coordinate inverter, metering, controls and protection.
Tune operation
Adjust limits and priorities with real data.
Battery storage
Battery storage is not a single function
AC or DC coupling
The right topology depends on new installation, retrofit, inverter and power requirement.
Backup is separate
A battery does not automatically provide backup. Changeover, phases and supported circuits must be designed.
Dynamic tariffs require rules
Charging at low prices can help, but network charges, losses, wear and peaks must be included.
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
How many kWh of storage do I need?
There is no universal figure. Evening demand, typical surplus, PV size, heat pump, EV and the desired reserve all matter.
Can storage be added to existing PV?
Often yes, after checking the inverter, metering, interfaces, space and protection.
Does charging from the grid pay?
It may where all-in price differences are large enough, after losses and battery use are included.
Can it provide backup power?
Only where the system, changeover and selected circuits are specifically designed for it.
Related content
Related content
Size the battery properly
Send annual consumption, existing PV information and a plant-room photo. PHT will assess capacity, power and the integration route.