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May 28 2026

Is it possible to install a heat pump as a retrofit measure in an existing building? What criteria must be met, and what are the critical aspects?

Yes, it is possible to install heat pumps in existing building, but building envelope optimization is mandatory: Insulate walls/roof and upgrade glazing to reduce the annual heat demand and the maximum load. Critical aspects to focus on are the lower supply temperatures of heat pumps, often resulting in the need to install larger radiators/ convectors. A hydraulic balancing of the system must be performed to ensure even heat distribution. Answered by Michael Strobel

May 28 2026

Do small municipalities across Europe have enough institutional and financial capacity to make an energy community viable and sustainable?

metea.tal social

Small municipalities are generally interested in the idea of energy communities because they see the potential benefits for local resilience, lower energy costs, and citizen participation. However, their main concern is whether they have the capacity to implement and sustain such initiatives in practice. Many small municipalities operate with limited budgets and small administrative teams, making it difficult to finance projects, navigate complex regulations, and manage the technical and legal aspects involved. They are also concerned about securing grid access, maintaining long-term citizen engagement, and ensuring that projects remain financially viable over time. Overall, the challenge is less about willingness and more about having the necessary resources, expertise, and institutional support to turn the concept into a successful and lasting […]

May 28 2026

On top of municipal solid and gardening wastes and black waters, is there any other source of energy within the municipal services scope of activities?

metea.tal environmental

Yes, there are. Grey and rain waters are a very adequate source or sink of heat, which can be used to taking or pouring heat in HVAC applications and domestic hot water preparation. Obviously, heat transfer must be boosted by a water-to-water heat pump. The efficiency of those systems can reach up to 5-6, depending on the temperature jump. Water-to-water heat pumps can save up to 10 times the primary energy needed for space heating and cooling applications in comparison to fossil fuel-powered boilers. Answered by Guillermo Escobar

May 16 2026

Is it compulsory for municipalities willing to prepare a SECAP to also develop an energy poverty assessment and set related targets, in addition to GHG reduction and adaptation targets?

metea.tal financial

Reporting on energy poverty is a mandatory requirement for all new Covenant of Mayors (CoM) signatories. Any municipality submitting a new Sustainable Energy and Climate Action Plan (SECAP or monitoring report must include an energy poverty diagnosis, clear goals, and at least one key energy poverty action. For more information, refer to the new SECAP Guidebook. Answered by Monica Salvia