SUNČI APP
Helping users to optimize solar energy collection and spending
- UI/UX
- App Development
- Custom Solutions
- IoT


- Brand
- Sunči
- Industry
- Climate tech
- Release
- 2021
Case study snapshot
Climate techTL;DR
Upheave developed the Sunči app end to end — from the mobile backend to a clean, intuitive interface that gives users daily, weekly, and annual overviews of their solar energy production and consumption.
Result
An intuitive app that helps users optimize how they produce and spend solar energy.
What is Sunči App?
Sunči is a digital application that helps people to balance between produces and consumes electricity
Users can track their electricity consumption, view reports and optimize to get lower costs. The project operates in Croatia.


Challenge
Our challenge in building the Sunči app was to create a solution that is easy to use and understandable for end-users.
Sunči was also supposed to help people to optimize energy consumption. We needed to find ways to make users track their energy spending efficiently and more often.
Solution
Implementing Upheave's solution as an app that sends notifications and reminders about energy spending and Earth's pollution.
The proposal includes the development efforts to build backend service and mobile application all in service of monitoring and optimizing energy consumption.
Mobile App Backend
Steps of building:
- 1.
Build a smart Metering Device that sends telemetry to the Data Collection Platform.
- 2.
Build a mobile App Backend that receives data from the Data Collection Platform.
- 3.
End users have a mobile application that fetches data from Mobile App Backend and displays various information about energy consumption.
- 4.
Mobile App Backend is based on the upfront defined schedule and sends push notifications to the users. When a user opens a push notification, Nudge Server notifies about the event.
Smart Metering Device
Data Collection Platform
Nudge Server
Mobile App
Mobile App Backend
Upheave's responsibility
Features
Sunči gives solar households a clear, real-time picture of how much energy they produce, use, exchange with the grid and save — on both Android and iOS.

At-a-glance energy overview
The home screen shows the plant's output and the household's draw over the last hour, the energy imported from and exported to the grid, and a short weather forecast — so users understand their system's state at a glance.
- Real-time production vs. consumption
- Imported & exported energy at a glance
- Push notifications for key updates

The home screen shows the plant's output and the household's draw over the last hour, the energy imported from and exported to the grid, and a short weather forecast — so users understand their system's state at a glance.
- Real-time production vs. consumption
- Imported & exported energy at a glance
- Push notifications for key updates
Visuals

Clear visualization

The application uses data collected from smart devices integrated in a database that analyzes and interprets the collected information.
Clear visualization of production, consumption and self-consumption encourages users to make the most of electricity and behave in an energy efficient way.

In addition, app users would receive notifications about the impact that their energy efficiency has on society. Reminders about the influence on the environment helps users to reach goals related to energy efficiency and self-consumption.
Finally, Sunči provides daily, weekly and annual overviews of electricity production and consumption.
Conclusion
The Upheave team proved not only up to the task but regularly went one step further, continuously helping us develop the most effective solution for our needs with expert advice and insights. We sincerely recommend them!
Kristina Lauš, Communications Manager, Sunči
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