An Energy Performance Certificate is an official document that indicates how much energy a home or building consumes and how much CO2 it emits to provide heating, cooling, lighting and hot water under normal conditions of use. It works in a similar way to the energy efficiency label on a household appliance, with a rating scale from A to G, and it is mandatory whenever a property is sold or rented in Spain. In this article, we explain exactly what it is, what it is used for, what each letter on the scale means and how to obtain one step by step.<\/p>\n
When we talk about energy certification, we are referring to a technical report prepared and signed by a qualified professional that assesses the energy performance of a home or building and assigns it a rating ranging from A, the most efficient, to G, the least efficient. To determine this rating, the technician analyses elements such as the insulation of the fa\u00e7ades and roof, the type of windows, the orientation of the property, the heating and cooling systems installed, and the domestic hot water system. Using all this information, they calculate how much energy the property would need over a year of standard use through software officially recognised by the relevant Ministry.<\/p>\n
The certificate therefore does not measure how much energy the person living in the property actually consumes, as this depends on their habits, but rather how much energy the building would require under normal conditions. This makes it possible to compare the efficiency of two different properties objectively, even if their occupants have very different energy consumption habits.<\/p>\n
The most direct benefit of an Energy Performance Certificate is transparency in the property market. It allows prospective buyers or tenants to know, before signing anything, whether they are likely to face high or moderate heating and air conditioning bills. This can represent a difference of several hundred euros a year between two properties of a similar size but with different energy ratings. By law, the energy rating must appear in any property advertisement, whether on a property website or in an estate agent’s window, just as the energy consumption of a fridge or washing machine is displayed on its technical specification sheet.<\/p>\n
Beyond buying and selling property, the Energy Performance Certificate also serves as a starting point for planning renovations. The report always includes a series of technical recommendations, such as improving insulation, changing the heating system or replacing windows, which help determine which improvements will have the greatest impact on energy bills. In many cases, it is also an essential requirement when applying for public grants or subsidies for energy efficiency renovations.<\/p>\n
The energy rating scale runs from A, representing the lowest consumption and emissions, to G, representing the highest. Although all seven ratings exist, in practice most Spanish residential properties fall into the middle and lower categories, as a large proportion of homes were built before insulation requirements became as strict as they are today. The following table summarises what each letter represents, paying particular attention to the ratings that generate the most questions because of their proximity to the average, C and E, and those that indicate properties with the greatest potential for improvement, F and G.<\/p>\n
As shown in the table, an Energy Performance Certificate with a C rating indicates a home with considerably better energy efficiency than average. This is common in properties built during the last fifteen or twenty years with reasonable insulation. An E energy rating, on the other hand, indicates energy consumption that is noticeably higher than desirable, with clear opportunities for improvement in insulation or the heating and cooling system.<\/p>\n
Ratings F and G represent the poorest energy performance and are usually associated with older properties that have not undergone any energy efficiency renovations. These may have single glazed windows, fa\u00e7ades without cavity walls or insulation, and inefficient heating systems. These ratings do not mean that the property is uninhabitable or unsafe, simply that its energy consumption and emissions are among the highest on the scale, and that a well planned energy efficiency renovation offers the greatest potential savings.<\/p>\n
Obtaining an Energy Performance Certificate for a property always involves an on site visit from a qualified technician, such as an architect, technical architect or engineer with the appropriate professional qualifications. These are the professionals legally authorised to sign and register this document. During the visit, the technician takes measurements of the property, reviews the construction materials, checks the type of windows and examines the installed heating, cooling and hot water equipment.<\/p>\n
Using this information, the technician enters the details into official software recognised by the Ministry for the Ecological Transition, which calculates the final energy rating. The certificate is then registered with the competent authority in the autonomous community where the property is located, a step without which the document has no legal validity. The price is not regulated and varies according to the property’s floor area and complexity, although as a general guide it usually ranges from \u20ac100 to \u20ac250 for a standard home, plus the regional registration fee. Once issued, the certificate is valid for ten years, unless renovations are carried out that substantially change the property’s energy performance before that period expires.<\/p>\n
Achieving a better energy rating does not always require a complete renovation. In many cases, improving window and roof insulation, sealing thermal bridges or replacing a combustion heating system with an air source heat pump are individual improvements that can already make a noticeable difference to the final rating. Combining these measures with a solar self consumption installation also reduces the property’s electricity consumption from the grid, another factor that the technician considers when calculating the energy rating.<\/p>\n
If you want to understand where your home’s energy consumption actually comes from before deciding which renovation to prioritise, our article on the energy consumption of household appliances according to their efficiency<\/a> breaks down which appliances have the greatest impact on your electricity bill. In our section on green energy for homes<\/a>, we also explain how to switch to an electricity supply from renewable sources, another factor that contributes to making your home more efficient and sustainable overall.<\/p>\n","protected":false},"excerpt":{"rendered":" An Energy Performance Certificate is an official document that indicates how much energy a home or building consumes and how much CO2 it emits to provide heating, cooling, lighting and…<\/p>\n","protected":false},"author":3,"featured_media":8904,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_joinchat":[],"footnotes":""},"categories":[41],"tags":[],"class_list":["post-9113","post","type-post","status-publish","format-standard","has-post-thumbnail","category-renewable-energies"],"_links":{"self":[{"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/posts\/9113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/comments?post=9113"}],"version-history":[{"count":2,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/posts\/9113\/revisions"}],"predecessor-version":[{"id":9115,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/posts\/9113\/revisions\/9115"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/media\/8904"}],"wp:attachment":[{"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/media?parent=9113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/categories?post=9113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/protenergia.com\/en\/wp-json\/wp\/v2\/tags?post=9113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}