Solar charging and charging optimization based on spot prices

The Woltti online service is the most versatile OCPP-based SaaS solution for electric vehicle charging on the market. It enables you to implement smart and cost-effective charging, where the utilization of solar power and optimization based on electricity spot prices work seamlessly together.

The Woltti system enables electric car charging to be controlled based on actual energy production and market prices – automatically and in real time. The end result is cheaper charging, better self-sufficiency and more efficient energy use.

Charge your electric car with solar power – without inverter restrictions

Woltti measures solar electricity production with its own measurement system, so the solution is independent of the inverter used . This makes solar charging easy and reliable in all locations.

• Charging can be controlled to use only solar power or a combination of solar power and the grid
  
• Works with all common inverter brands
  
• The minimum charging capacity for each car (usually 6 A) is automatically taken into account
  
• Production and consumption data are measured in real time
  

Solar charging is ideal for single-family homes, housing associations, and commercial properties where you want to maximize the utilization of self-produced energy.

Electric car charging according to spot prices

The Woltti system has integrated Nord Pool Spot electricity prices , which allows charging to be automatically scheduled for the most affordable hours.

Benefits for the user:

• Charging starts when electricity is cheapest
  
• You avoid high price spikes without manual adjustment
  
• Can be combined with solar charging and other energy use
  
• Especially suitable for users of exchange-traded electricity
  

Charging optimization based on spot prices brings direct savings on your electricity bill and makes charging your electric car even smarter.

Real-time measurement and energy overview

Woltti collects fast and accurate measurement data all the way down to the device level. Measurement is possible for currents up to 3 × 600 A, and the system supports a wide range of measurement solutions.

With the system you can:

• Monitor electricity consumption and production in real time
  
• Optimize the use of solar, wind and grid electricity
  
• Displays the property's consumption and CO₂ balance, for example on a lobby screen
  
• Utilizes the smart meter's HAN port or separate electricity meters
  

We also support all data from Fronius systems.

Compatible with a wide range of charging devices

Woltti works with several OCPP-compatible charging stations . We represent and import in Finland, among others:

• Sungrow
  
• Wallbox
  
• Alfen
  
• Garo
  
• KEBA
  
• go-e
  
• DEFA
  
• Wolttinen

The system can be connected to multiple charging stations and easily scales to meet growing needs.

A customized solution for every project

The Woltti system is always designed for each location . The solution is suitable for:

• For companies and real estate investors
  
• For housing companies
  
• For detached houses
  

Over 50% of single-family homes and over 80% of housing associations and businesses need some kind of smart control for charging electric vehicles. We help you choose the right solution – whether the focus is on solar charging, spot prices or overall energy optimization.

Contact our sales and ask more!