
Renovation ROI Calculator
The Simple ROI Calculator is an easy-to-use online tool that helps assess whether renovating a multi-apartment building (MAB) is financially worthwhile. By entering key data such as energy consumption, renovation costs, and property value, users receive clear results on the expected ROI (Return on Investment) and the payback period.

Guide to SECAP Development in the CEE Region
The guide outlines planning and implementing Sustainable Energy and Climate Action Plans, offering CEE-specific insights and examples. It supports CEE municipalities in drafting SECAPs, engaging stakeholders, and carrying out action plans.

StartSun Start-Up Package for Energy Communities
Drawing from experiences of the Baltic Sea Region, this handbook follows the full lifecycle of an energy community, from the initial idea and engagement of potential members through legal establishment, financing, and construction to everyday management, maintenance, social sustainability, and future development.

StartSun Energy Community Feasibility Calculator
This tool helps individuals and small organizations explore the feasibility and potential of creating or joining a solar energy community in their area. In addition to estimating solar energy production, the tool includes a unique module that inspires users identify suitable energy community models based on their specific circumstances.
