Energy Analysis & Optimization for Low-Energy and Passive House Buildings

Clear energy insight to help you understand how your building performs and what improvements actually matter.

Services

I help architects, designers, developers, and private clients understand and improve the energy performance of buildings.

PHPP-Based Energy Analysis & Optimization

Energy analysis and optimization to support low-energy and Passive House–level performance, with clear, actionable recommendations.

Hourly Energy Consulting

Consulting sessions for specific questions, clarification, or targeted energy-related decisions.

Technical review and optimization of building envelope details and thermal bridge calculations, where required, as part of the energy analysis process.

Focused Technical Input

About me

I am an architect and Passive House Designer / Consultant, specialised in energy efficiency and building performance.
I work as an independent consultant, focusing on PHPP-based energy analysis and optimization to support clear, informed design decisions for low-energy and Passive House–level projects.

Get in touch

Email: sandra@sandrasonei.com / Tel: +40 751 980 974

© 2026 by Sandra Sonei Energy Efficiency Consulting