> For the complete documentation index, see [llms.txt](https://docs.altum.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.altum.ai/english/sustainability/sustainability-api-v2-apartments/energylabel.md).

# Energylabel

Explanation of the different energylabel inputs and outputs

### Input

<table><thead><tr><th width="262.3333333333333">Feature name</th><th>Explanation</th></tr></thead><tbody><tr><td>"target_label": "A"</td><td>Target energylabel for the property given as a minimum.</td></tr><tr><td>"energylabel_strict": 1</td><td>Restrict the potential suggested measures to the given energylabel target. F.e. if target budget allows A++ with target energy label A, with "energylabel_strict": 1 the suggested measures won't surpass energylabel A.</td></tr></tbody></table>

### Output

<table><thead><tr><th width="417.3333333333333">Feature</th><th>Explanation</th></tr></thead><tbody><tr><td>label": {"current":  "A"}</td><td>Current estimated NTA 8800 energylabel with respect to the input based on housetype, buildyear, inner surface area and estimated or given measures</td></tr><tr><td>label": {"potential": "A++"}</td><td>Estimated potential new NTA 8800 energylabel based on given budget, search criteria and other search parameters, after executing said suggested measures</td></tr><tr><td>"provided_label": {"temporary": "G"}</td><td>Estimated energylabel provided by RVO based on the old NEN 7120 norm.</td></tr><tr><td>"provided_label": {"definitive": "A"}</td><td>Definitive energylabel from RVO's EP-online</td></tr><tr><td>"provided_label": {"definitive_type": "NEN7120"}</td><td>Norm on which the definitive energylabel is based</td></tr><tr><td>"provided_label": {"definitive_validity": "2029-9"}</td><td>Validity end date of the given definitive energylabel</td></tr><tr><td>"provided_label": {"definitive_beng2": 49}</td><td>Definitive BENG2 from RVO's EP-online</td></tr><tr><td>"BENG2": {"current":  "400"}</td><td>BENG 2 numerical score of the current estimated NTA 8800 score</td></tr><tr><td>"BENG2": {"potential":  "110"}</td><td>BENG 2 numerical score of the potential estimated NTA 8800 score</td></tr></tbody></table>


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