The volume of savings processed since the launch of the Energy Saving Certificates (CAE) already totals 13,876 gigawatt-hours (GWh), based on 12,415 issuance requests, according to figures from the Ministry for Ecological Transition and the Demographic Challenge (Miteco), updated as of 3 November with information corresponding to October.
The 2026 trajectory shows the change in the system’s scale: between January and October, requests for nearly 6,170 GWh of savings have been processed, which represents a 6.6% increase compared with the approximately 5,790 GWh recorded over the whole of 2025, despite there still being two months left to close the year.
This progress is also explained by the economic appeal for companies, since CAE allow certifying the energy that is not consumed through efficiency measures and obtaining remuneration for that savings, which is added to the recurring reduction in the electricity and gas bill.
"The data shows that CAE are moving past their initial phase. For companies, the change is understanding that an investment in efficiency can have a double return: reducing their energy bill and, in addition, turning the generated savings into an asset with economic value," CAEX Spain’s director, Emmanuel Sevilla, has explained.
By sectors, industry, with 7,389.72 GWh, and transport, with 3,811.06 GWh, together account for nearly 81% of the savings requested in Spain. Next come the residential sector, with 1,526.60 GWh; the tertiary sector, with 1,084.30 GWh; and the agro-livestock sector, with 64.22 GWh.
Miteco currently estimates the average price range received by the saver at between 115 and 140 euros/MWh. By way of example, 1,000 MWh of savings valued within that range would translate into between 115,000 and 140,000 euros, although the final amount depends on the specific conditions of each operation.
For CAEX, this expansion inaugurates a new phase for the market, focused on ensuring that a larger number of companies identify which efficiency projects are capable of generating CAE and transform their energy savings into additional income.
"We are moving from explaining what a CAE is to talking about how to make use of it. The challenge now is to make a system that still remains technically complex accessible so that more companies can monetize the savings they are already generating," Sevilla concluded.