Residential energy efficiency and household savings

Recent reports from France and Lithuania highlight challenges and strategies regarding residential energy efficiency and household savings.

In France, an analysis of approximately 700,000 energy audits by Argile.ai suggests that one-third of recommended renovation scenarios may inadvertently increase indoor temperatures during summer. The study found that 31% of recommended works lead to higher indoor heat, with 4% of cases seeing a rise exceeding 5 °C. These issues often stem from renovations that prioritize winter heating efficiency while neglecting building inertia, solar exposure, and ventilation. To address energy transition needs, the National Housing Agency (Anah) is conducting the France Rénov’ national tour to provide citizens with independent advice on energy efficiency and state financial aid.

In Lithuania, a survey by the Lithuanian Energy Agency (LEA) indicates that while 92% of residents attempt to save energy, many focus on ineffective minor actions. Experts advise that instead of expensive long-term investments like solar panels, residents should prioritize home audits and focus on reducing heat loss in high-usage rooms through window and radiator management to achieve significant annual savings.