> ## Documentation Index > Fetch the complete documentation index at: https://nectarclimate.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # EUI & Intensity > Rank sites by energy use per square foot and spot the outliers in your portfolio. Need help in this area? See [Analytics FAQ](/docs/platform/analytics/faq). The EUI & Intensity dashboard ranks the sites in your portfolio by [energy use intensity](/docs/platform/glossary#energy-use-intensity-eui) — energy use per square foot — so you can quickly see which buildings are outliers for a chosen commodity and time window. You'll find it in the **Analytics** area: open [**Analytics > EUI & Intensity**](https://dash.nectarclimate.com/analytics/intensity). ## Filters All three views share one filter bar at the top of the page: | Filter | Description | | --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Date range** | Month-range selector with presets (Last 12 months, This year, Last 2 years) | | **Commodity** | Choose which utility type to analyze (electricity, gas, etc.), or **Electricity and Gas** for [combined site energy](#combined-electricity-and-gas) | | **Sites** | Optionally narrow the analysis to specific sites | | **Tags** | Optionally narrow to sites that have the selected site tags | | **Denominator** | Defaults to **Square footage**. Choose a numeric [custom variable](/docs/platform/settings/custom-variables) (for example, Production Volume) to rank by usage per unit of that metric. | Until you pick a date range, the page shows preset buttons to get you started. ## Views The dashboard has three tabs that share the same filters. ### Ranking A horizontal bar chart with one bar per site, sorted from highest to lowest intensity. The longest bars at the top are your outliers. Click any bar to open the site's [intensity breakdown](#site-intensity-breakdown). ### Size vs consumption A scatter plot of building size (square footage) against annualized usage. This helps you tell apart a site that's genuinely inefficient from one that simply uses more energy because it's larger. ### Over time A trend view of intensity across the selected window, useful for spotting seasonal patterns or the impact of an efficiency project. ## How intensity is calculated With the default **Square footage** denominator, intensity is your site's usage divided by its **gross floor area**, scaled to a full year (`…/sqft/yr`). Nectar does not adjust for occupancy. This is intentional: if a site's occupancy hasn't been applied yet, it will stand out as an outlier here, which is exactly what you want when auditing your portfolio. How that full-year scaling works depends on the view: * **Ranking**, **Size vs consumption**, and the breakdown panel use **days with bill coverage** in the selected window, so a site with incomplete data still gets a rough annualized run-rate instead of looking artificially efficient. * **Over time** uses the **length of each calendar period** (month, and similarly for other buckets). A gap in coverage shows up as a dip, the same way other trend charts behave. To set or correct a site's area, edit the site in [**Settings > Company > Sites**](https://dash.nectarclimate.com/settings/company/sites). When you select a numeric [custom variable](/docs/platform/settings/custom-variables) as the denominator, intensity is usage divided by that variable for months where both usage and a positive variable value exist. That path is **not** annualized — units look like kWh per cwt (or whatever unit you defined), not `…/yr`. Axis labels reflect the variable name and unit. ## Combined electricity and gas Selecting **Electricity and Gas** converts each fuel to kBtu, adds them together, and divides by gross floor area — the site energy basis used for portfolio energy reporting. Results are shown in **kBtu/sqft/yr** rather than your usual per-commodity units. A site appears when it has electricity **or** natural gas usage data in the selected window — only sites with neither are left out. A month with zero usage still counts as data. A site that reports just one fuel is ranked on that fuel alone, so an all-electric site is measured correctly, but a site whose gas bills are missing for the window will show an energy intensity that is lower than reality. Before reading a low combined figure as good efficiency, confirm both fuels reported for that site and window. ## Sites without denominator coverage A site needs a denominator value to have an intensity figure. Sites that have usage but no square footage (or an area of zero) — or, for a custom denominator, no matching variable coverage in the window — are listed in a separate **missing** section below the charts, rather than being shown with a misleading value. Add the area in site settings, or enter variable values under [**Settings > Company > Sites > General**](https://dash.nectarclimate.com/settings/company/sites) (definitions) and each site’s **Variables** tab, to bring them into the ranking. ## Site intensity breakdown Clicking a site opens a breakdown panel showing how its intensity figure is built — the total usage for the period, the gross area, the number of days with data, and the resulting annualized intensity. This makes it easy to verify a number or understand why a site landed where it did. ## Related pages * [Sites](/docs/platform/sites/overview) — the dashboard for an individual site * [Site comparison](/docs/platform/sites/compare) — compare two groups of sites side by side * [Analytics](/docs/platform/analytics/overview) — portfolio-level consumption and cost charts * [Custom dashboards](/docs/platform/analytics/custom-dashboards) — Site EUI widgets with the same intensity math * [Custom variables](/docs/platform/settings/custom-variables) — define numeric denominators and site attributes * [Settings — Sites](/docs/platform/settings/company-settings) — set each site's area and other details ## Frequently asked questions A site needs a denominator value to appear in the charts. With square footage selected, sites with usage but no area are listed in the missing section — add the area in [**Settings > Company > Sites**](https://dash.nectarclimate.com/settings/company/sites). With a custom variable selected, enter values under [**Settings > Company > Sites > General**](https://dash.nectarclimate.com/settings/company/sites) or on each site’s **Variables** tab. Using gross square footage means a site whose occupancy hasn't been applied yet still shows up as an outlier — which helps you catch sites that need attention. The breakdown panel shows the exact inputs behind each figure. Choose **Electricity and Gas** in the **Commodity** filter to rank sites on total site energy in kBtu. For any other combination, the dashboard shows one commodity at a time — switch the **Commodity** filter to compare a different utility type. Create a monthly **Number** [custom variable](/docs/platform/settings/custom-variables), enter values per site (or import them), then choose that variable in the **Denominator** filter on this page. Ranking and the breakdown panel annualize using days with bill coverage, so incomplete data still produces a rough yearly rate. **Over time** divides by the calendar length of each period, so a month with missing bills dips. Prefer the trend when you are hunting coverage gaps; prefer the ranking when you want a portfolio-wide run-rate.