Aging Homes and Funding Gaps Put Greece’s Energy Efficiency Goals at Risk

Greece faces a steep uphill challenge in meeting its climate and energy efficiency commitments. More than 400,000 residential renovations must be completed by 2030 to align with emissions reduction targets. Yet when the condition of the existing building stock and the limited financial capacity of households are taken into account, the feasibility of this goal becomes increasingly uncertain.

Energy efficiency is a core pillar of the European Union’s climate strategy, alongside renewable energy deployment and greenhouse gas reduction. While the policy framework is clear, major uncertainties remain around cost allocation, social impact, and whether existing support mechanisms are sufficient to enable large-scale renovations.

Funding gaps in Greece’s energy efficiency framework

Greece’s National Social Climate Plan covers the 2026–2032 period and focuses on supporting vulnerable households and micro-enterprises exposed to rising energy and climate-related costs. Implementation will rely on funding from the EU Social Climate Fund, combined with a mandatory national contribution of 25 percent.

For Greece, EU funding amounts to €3.5 billion ($4,1 billion). With national co-financing included, the total budget reaches €4.7 billion ($5,5 billion). However, estimated investment needs for energy upgrades in residential and tertiary buildings between 2025 and 2030 are significantly higher, reaching €15.6 billion ($ 18,3 billion).

Public funding requirements alone are projected to range between €5.8 billion ($ 6,8 billion) and €7.4 billion ($8,6 billion). Compared with available public resources of approximately €4.2 billion ($4,9 billion), this results in a financing gap of €1.7 billion ($1,9 billion) to €3.2 billion ($3,7 billion) over the period.

Aging Buildings Undermine Greece Energy Efficiency Renovation Efforts

The structural challenge is substantial. About 51 percent of Greece’s housing stock was built before 1980, while only 2.6 percent of residences were constructed after 2011. As a result, many homes lack adequate thermal insulation, and only a small share meets modern energy performance standards.

Data from energy performance certificates confirm this trend. Roughly 34 percent of residential buildings fall into the lowest energy efficiency category, 60 percent are rated between low and moderate performance, and just 6 percent achieve an energy class of B or higher.

Energy poverty highlights the social dimension of renovation policy

Limited household incomes and low renovation rates have contributed to persistently high levels of energy poverty. During the mid-2010s economic crisis, more than 30 percent of households reported being unable to adequately heat their homes. By 2023, the figure had fallen to 19 percent but remained nearly double the EU average of 10.6 percent.

Greece also records exceptionally high levels of overdue utility bills, affecting 32.9 percent of the population in 2023, compared with 6.9 percent across the EU. At the same time, 13.5 percent of residents live in homes with structural problems such as dampness or deteriorated windows.

Targeted energy efficiency renovation measures could significantly ease these pressures. In 2021, an estimated 12.4 percent of Greek households, around 513,000, were already experiencing energy deprivation, underscoring the urgency of linking climate action with social policy.