This site provides actionable advice and articles to help you achieve energy independence. With 2030 EU regulations phasing out ‘F’ and ‘G’ energy certificates, upgrading your home is now essential to keep it legal, rentable, and saleable.
ECS is an energy and insulation consultancy. While we still design and build off-grid power systems, we no longer take on primary building projects directly. Instead, we focus on designing breathable thermal envelopes using wood fibre, hemp, and cork renders. This allows you to hit top-tier energy ratings without trapping damaging moisture in historic Spanish masonry with synthetic foams.
Our advice is backed by real-world experience and testing at our near-zero-energy (NZEB) showhouse in Asturias. When it comes to installation, specialised contractors—like BioReforma S.L. in Andalucía—handle the daily contracting. However, when requested, we stay actively involved, providing hands-on technical assistance, troubleshooting, and training on-site.
Natural Insulation Calculator
Find the right breathable insulation for your project — sized to Spain's 2026 CTE building standards.
Wall Assembly
Climate Zone Detail
This tool is for estimation purposes only. Calculations are based on generic material properties and steady-state physics. It does not account for thermal bridges, mortar joints, or site-specific conditions. Compliance with the Spanish Technical Building Code (CTE) requires a certified project by a licensed Architect.