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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta name="description" content="Wind map.">
<title>Wind map</title>
<style>
* { margin: 0; padding: 0; }
body {font: 10pt "Helvetica Neue", Arial, Helvetica, sans-serif;}
html, #map {
position: absolute;
height: 100%;
width: 100vw;
padding: 0;
}
.fleet-estimate-panel {
position: absolute;
top: 12px;
right: 12px;
background: rgba(0, 0, 0, 0.55);
color: #fff;
padding: 10px 14px;
border-radius: 6px;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
font-size: 10pt;
max-width: 260px;
z-index: 500;
}
.fleet-estimate-title {
font-weight: 600;
margin-bottom: 4px;
text-transform: uppercase;
letter-spacing: 0.05em;
font-size: 9pt;
color: #ddd;
}
.fleet-estimate-status {
font-size: 11pt;
margin-bottom: 2px;
}
.fleet-estimate-details {
font-size: 9pt;
color: #bbb;
}
.fleet-estimate-toggle {
display: block;
margin-top: 8px;
font-size: 9pt;
color: #ddd;
cursor: pointer;
}
.fleet-estimate-columns {
display: flex;
gap: 12px;
flex-wrap: wrap;
}
.fleet-estimate-column {
flex: 1;
min-width: 120px;
}
.fleet-estimate-heading {
font-size: 8pt;
letter-spacing: 0.08em;
text-transform: uppercase;
color: #bbb;
margin-bottom: 4px;
}
.fleet-estimate-value {
font-size: 14pt;
font-weight: 600;
margin-bottom: 4px;
}
.fleet-estimate-subvalue {
font-size: 9pt;
color: #bbb;
}
.fleet-estimate-metrics {
font-size: 9pt;
margin-bottom: 4px;
}
.fleet-estimate-metric {
display: flex;
justify-content: space-between;
gap: 8px;
line-height: 1.2;
}
.fleet-estimate-metric-label {
color: #bbb;
}
.fleet-estimate-metric-value {
font-variant-numeric: tabular-nums;
}
body > #sidebar {
display: none;
}
.filter-range {
margin-bottom: 12px;
}
.filter-range-display {
font-size: 9pt;
color: #ddd;
margin-bottom: 6px;
}
.filter-range-sliders {
position: relative;
height: 30px;
margin-top: 4px;
}
.filter-range-sliders input[type=range] {
-webkit-appearance: none;
appearance: none;
position: absolute;
left: 0;
width: 100%;
height: 30px;
background: none;
pointer-events: none;
}
.filter-range-sliders input[type=range]::-webkit-slider-runnable-track {
height: 4px;
border-radius: 4px;
background: transparent;
}
.filter-range-sliders input[type=range]::-moz-range-track {
height: 4px;
border-radius: 4px;
background: transparent;
}
.filter-range-sliders input[type=range]::-webkit-slider-thumb {
-webkit-appearance: none;
pointer-events: auto;
height: 14px;
width: 14px;
border-radius: 50%;
background: #fff;
border: 2px solid #1f8ef1;
margin-top: -5px;
}
.filter-range-sliders input[type=range]::-moz-range-thumb {
pointer-events: auto;
height: 14px;
width: 14px;
border-radius: 50%;
background: #fff;
border: 2px solid #1f8ef1;
}
.filter-range-track {
position: absolute;
left: 0;
right: 0;
top: 50%;
height: 4px;
margin-top: -2px;
border-radius: 4px;
background: rgba(255, 255, 255, 0.2);
}
.filter-range-track::after {
content: '';
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
border-radius: 4px;
}
.filter-group {
margin-bottom: 10px;
}
.filter-group label {
display: block;
font-weight: 600;
margin-bottom: 3px;
}
.filter-group select,
.filter-group input {
width: 100%;
padding: 4px;
box-sizing: border-box;
font-size: 10pt;
}
.filter-inline-inputs {
display: flex;
gap: 6px;
}
.filter-inline-inputs input {
flex: 1;
}
.filter-actions {
margin-top: 12px;
}
#applyFiltersBtn {
background: #1f8ef1;
color: #fff;
border: none;
border-radius: 3px;
padding: 6px 12px;
font-size: 10pt;
cursor: pointer;
}
#applyFiltersBtn:disabled {
background: #777;
cursor: not-allowed;
}
.filter-results {
margin-top: 10px;
font-size: 9pt;
color: #ddd;
}
.filter-stats {
margin-top: 12px;
padding: 8px;
background: rgba(0, 0, 0, 0.2);
border-radius: 4px;
}
.filter-stat-line {
font-size: 9pt;
margin-bottom: 6px;
}
.filter-histogram {
width: 100%;
height: 180px;
}
</style>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css"
integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ=="
crossorigin=""/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/c3/0.7.20/c3.css"/>
<link rel="stylesheet" href="dist/L.Control.MousePosition.css"/>
<script src="https://unpkg.com/leaflet@1.3.1/dist/leaflet.js"
integrity="sha512-/Nsx9X4HebavoBvEBuyp3I7od5tA0UzAxs+j83KgC8PU0kgB4XiK4Lfe4y4cgBtaRJQEIFCW+oC506aPT2L1zw=="
crossorigin="">
</script>
<script src="https://cdn.plot.ly/plotly-2.27.0.min.js" charset="utf-8"></script>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script src=https://cdnjs.cloudflare.com/ajax/libs/mathjs/12.2.1/math.min.js></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/leaflet-ajax/2.1.0/leaflet.ajax.min.js"></script>
<script src='dist/L.Control.MousePosition.js'></script>
<!--leaflet-velocity-->
<link rel="stylesheet" href="dist/leaflet-velocity.css" />
<script src="dist/leaflet-velocity.js"></script>
<!--leaflet-sidebar-v2-->
<script src="https://cdn.jsdelivr.net/npm/leaflet-sidebar-v2@3.2.3/js/leaflet-sidebar.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/leaflet-sidebar-v2@3.2.3/css/leaflet-sidebar.min.css" rel="stylesheet">
</head>
<body>
<!-- optionally define the sidebar content via HTML markup -->
<div id="sidebar" class="leaflet-sidebar collapsed">
<!-- nav tabs -->
<div class="leaflet-sidebar-tabs">
<!-- top aligned tabs -->
<ul role="tablist">
<li><a href="#home" role="tab"><i class="fa fa-bars active"></i></a></li>
<li><a href="#wind" role="tab"><i class="fa fa-wind active"></i></a></li>
<li><a href="#filters" role="tab"><i class="fa fa-filter"></i></a></li>
<li><a href="https://github.com/1oly/wind"><i class="fa-brands fa-github"></i></a></li>
<li><a href="https://olly.dk"><i class="fa fa-home"></i></a></li>
</ul>
</div>
<!-- panel content -->
<div class="leaflet-sidebar-content">
<div class="leaflet-sidebar-pane" id="home">
<h1 class="leaflet-sidebar-header">
Wind map
<span class="leaflet-sidebar-close"><i class="fa fa-caret-left"></i></span>
</h1>
<h2>About wind map</h2>
<p>This wind map is made to show the current wind turbines and wind field in Denmark.
The estimated current power production of each wind turbine is shown by clicking a turbine.</p>
<h3>Data sources</h3>
<ul>
<li>Basemap is courtesy of <a href="https://www.openstreetmap.org/copyright">OpenStreetMap contributors</a> and <a href="https://carto.com/attributions">CARTO</a>. </li>
<li>Wind data is from Harmonie forecast model run by <a href="https://www.dmi.dk">DMI</a> and <a href="https://opendatadocs.dmi.govcloud.dk/DMIOpenData">DMI Open Data</a>.</li>
<li>Wind turbine data is from <a href="https://ens.dk/service/statistik-data-noegletal-og-kort/download-gis-filer">Energistyrelsen</a> (the Danish Energy Agency). Updated September 2026.</li>
<li>Actual power production is from <a href="https://www.energidataservice.dk/">Energidataservice</a>. Updated every hour.</li>
<li>Power curves are computed using a generic model in <a href="https://gitlab.windenergy.dtu.dk/TOPFARM/PyWake/">PyWake</a> and by clustering turbine data.</li>
</ul>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
<p><a href="https://visitorbadge.io/status?path=https%3A%2F%2Fwind.olly.dk"><img src="https://api.visitorbadge.io/api/visitors?path=https%3A%2F%2Fwind.olly.dk&label=VISITORS&countColor=%23263759&style=flat-square" /></a></p>
</div>
<div class="leaflet-sidebar-pane" id="wind">
<h1 class="leaflet-sidebar-header">
Wind turbine
<span class="leaflet-sidebar-close"><i class="fa fa-caret-left"></i></span>
</h1>
<h3>Wind turbine specs*</h3>
<ul style="list-style: none;">
<li><b>Model:</b> <div class="manufacturer" style="display: inline"></div> (<div class="model" style="display: inline"></div>)</li>
<li><b>Power:</b> <div class="power" style="display: inline"></div> MW.</li>
<li><b>Rotor diameter:</b> <div class="rotor_diam" style="display: inline"></div> m.</li>
<li><b>Hub height:</b> <div class="hub_height" style="display: inline"></div> m.</li>
<li><b>Date connected:</b> <div class="date_connect" style="display: inline"></div></li>
<li><b>Date decomissioned:</b> <div class="date_decom" style="display: inline"></div></li>
</ul>
<h3>Power production</h3>
<p>When the turbine belongs to a wind farm, the displayed production typically reflects the farm's total output</p>
<div id="chart" style="width:350px;height:200px;"></div>
<p><i>* Data is taken directly from Energistyrelsen and not quality assured before displaying it here. Wrong infomation may occur.</i></p>
<h3>Wind forecast</h3>
<p></p>
<b>Forecast time:</b> <div class="refDate" style="display: inline"></div> <div class="refTime" style="display: inline"></div>
<div class="wind-profile">
<div id="windProfileStatus" class="wind-profile-status">Select a turbine to view the wind profile.</div>
<div id="windProfileChart" style="width:350px;height:200px;"></div>
</div>
<h3>Power curve</h3>
<div class="power-curve">
<div id="powerCurveStatus" class="wind-profile-status">Select a turbine to view the power curve.</div>
<div id="powerCurveChart" style="width:350px;height:200px;"></div>
</div>
</div>
<div class="leaflet-sidebar-pane" id="filters">
<h1 class="leaflet-sidebar-header">
Filter turbines
<span class="leaflet-sidebar-close"><i class="fa fa-caret-left"></i></span>
</h1>
<p>Filter the turbines by properties</p>
<div class="filter-group">
<label for="filterManufacturer">Manufacturer</label>
<select id="filterManufacturer">
<option value="">Any</option>
</select>
</div>
<div class="filter-group">
<label for="filterLocation">Location</label>
<select id="filterLocation">
<option value="">Any</option>
</select>
</div>
<div class="filter-group">
<label for="filterAuthority">Authority</label>
<select id="filterAuthority">
<option value="">Any</option>
</select>
</div>
<div class="filter-group filter-range">
<label>Capacity (kW)</label>
<div class="filter-range-display" id="capacityRangeDisplay">Loading…</div>
<div class="filter-range-sliders">
<div class="filter-range-track" id="capacityRangeTrack"></div>
<input type="range" id="filterCapacityMin" min="0" max="0" step="1">
<input type="range" id="filterCapacityMax" min="0" max="0" step="1">
</div>
</div>
<div class="filter-group filter-range">
<label>Rotor diameter (m)</label>
<div class="filter-range-display" id="rotorRangeDisplay">Loading…</div>
<div class="filter-range-sliders">
<div class="filter-range-track" id="rotorRangeTrack"></div>
<input type="range" id="filterRotorMin" min="0" max="0" step="0.1">
<input type="range" id="filterRotorMax" min="0" max="0" step="0.1">
</div>
</div>
<div class="filter-group filter-range">
<label>Hub height (m)</label>
<div class="filter-range-display" id="hubRangeDisplay">Loading…</div>
<div class="filter-range-sliders">
<div class="filter-range-track" id="hubRangeTrack"></div>
<input type="range" id="filterHubMin" min="0" max="0" step="0.1">
<input type="range" id="filterHubMax" min="0" max="0" step="0.1">
</div>
</div>
<div class="filter-group">
<label>Date connected</label>
<div class="filter-inline-inputs">
<input type="date" id="filterDateConnectStart">
<input type="date" id="filterDateConnectEnd">
</div>
</div>
<div class="filter-group">
<label for="filterStatus">Operational status</label>
<select id="filterStatus">
<option value="">Any</option>
<option value="operational">In operation</option>
<option value="decommissioned">Decommissioned</option>
</select>
</div>
<div class="filter-actions">
<button type="button" id="applyFiltersBtn" disabled>Show</button>
</div>
<div class="filter-stats">
<div id="filterCapacitySum" class="filter-stat-line">Total capacity: –</div>
<div id="filterCapacityHistogram" class="filter-histogram">Histogram available when turbines include capacity data.</div>
</div>
<div id="filterResults" class="filter-results">Loading turbine data…</div>
</div>
</div>
</div>
<div id="map"></div>
<div id="fleetEstimatePanel" class="fleet-estimate-panel">
<div class="fleet-estimate-title">Wind turbines</div>
<div class="fleet-estimate-columns">
<div class="fleet-estimate-column">
<div class="fleet-estimate-heading">Actuals</div>
<div id="fleetActualsTotal" class="fleet-estimate-value">Loading…</div>
<div class="fleet-estimate-metrics">
<div class="fleet-estimate-metric">
<span class="fleet-estimate-metric-label">Onshore</span>
<span id="fleetActualsOnshore" class="fleet-estimate-metric-value">–</span>
</div>
<div class="fleet-estimate-metric">
<span class="fleet-estimate-metric-label">Offshore</span>
<span id="fleetActualsOffshore" class="fleet-estimate-metric-value">–</span>
</div>
</div>
<div id="fleetActualsDetails" class="fleet-estimate-subvalue">Fetching wind production…</div>
</div>
<div class="fleet-estimate-column">
<div class="fleet-estimate-heading">Estimate</div>
<div id="fleetEstimateTotal" class="fleet-estimate-value">Loading…</div>
<div id="fleetEstimateDetails" class="fleet-estimate-subvalue"></div>
</div>
</div>
<label class="fleet-estimate-toggle"><input id="windToggle" type="checkbox" checked> Toggle wind</label>
</div>
<script>
var map = new L.Map('map',{ zoomControl: false })
map.attributionControl.addAttribution('<a href="https://confluence.govcloud.dk/display/FDAPI/Danish+Meteorological+Institute+-+Open+Data">© DMI</a>');
var CartoDB_DarkMatterNoLabels = L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_nolabels/{z}/{x}/{y}{r}.png?key=cb1_2eyt_1_989a4f20be38f3de98282e9b', {
attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>, © <a href="https://carto.com/attributions">CARTO</a>',
subdomains: 'abcd',
maxZoom: 20
}).addTo(map);
var windProfileChartEl = document.getElementById('windProfileChart');
var windProfileStatusEl = document.getElementById('windProfileStatus');
var powerCurveChartEl = document.getElementById('powerCurveChart');
var powerCurveStatusEl = document.getElementById('powerCurveStatus');
var fleetEstimateTotalEl = document.getElementById('fleetEstimateTotal');
var fleetEstimateDetailsEl = document.getElementById('fleetEstimateDetails');
var fleetActualsTotalEl = document.getElementById('fleetActualsTotal');
var fleetActualsDetailsEl = document.getElementById('fleetActualsDetails');
var fleetActualsOnshoreEl = document.getElementById('fleetActualsOnshore');
var fleetActualsOffshoreEl = document.getElementById('fleetActualsOffshore');
var WIND_PROFILE_HEIGHTS = ['10m','50m','100m','150m','250m','350m','450m'];
var windGridCache = {};
var windGridPromise = null;
var lastWindProfileRequestId = 0;
var powerCurvesPromise = null;
var powerCurveEntries = [];
var wtlyr = null;
var allTurbineFeatures = [];
var displayedTurbineFeatures = [];
var filterManufacturerEl = document.getElementById('filterManufacturer');
var filterLocationEl = document.getElementById('filterLocation');
var filterAuthorityEl = document.getElementById('filterAuthority');
var filterCapacityMinEl = document.getElementById('filterCapacityMin');
var filterCapacityMaxEl = document.getElementById('filterCapacityMax');
var filterRotorMinEl = document.getElementById('filterRotorMin');
var filterRotorMaxEl = document.getElementById('filterRotorMax');
var filterHubMinEl = document.getElementById('filterHubMin');
var filterHubMaxEl = document.getElementById('filterHubMax');
var capacityRangeDisplayEl = document.getElementById('capacityRangeDisplay');
var rotorRangeDisplayEl = document.getElementById('rotorRangeDisplay');
var hubRangeDisplayEl = document.getElementById('hubRangeDisplay');
var capacityRangeTrackEl = document.getElementById('capacityRangeTrack');
var rotorRangeTrackEl = document.getElementById('rotorRangeTrack');
var hubRangeTrackEl = document.getElementById('hubRangeTrack');
var filterDateConnectStartEl = document.getElementById('filterDateConnectStart');
var filterDateConnectEndEl = document.getElementById('filterDateConnectEnd');
var filterStatusEl = document.getElementById('filterStatus');
var filterResultsEl = document.getElementById('filterResults');
var filterCapacitySumEl = document.getElementById('filterCapacitySum');
var filterHistogramEl = document.getElementById('filterCapacityHistogram');
var applyFiltersBtn = document.getElementById('applyFiltersBtn');
if (filterStatusEl) {
filterStatusEl.value = 'operational';
}
var RANGE_EPSILON = 1e-6;
var fleetEstimateRequestId = 0;
var fleetEstimateTimeoutId = null;
var ACTUAL_PRODUCTION_URL = 'https://raw.githubusercontent.com/1oly/wind/main/script/wind_actuals.json';
var actualProductionPromise = null;
var actualProductionData = null;
if (applyFiltersBtn) {
applyFiltersBtn.addEventListener('click', applyFilters);
}
refreshActualProductionDisplay();
function ensureWindGridsLoaded() {
if (!windGridPromise) {
windGridPromise = Promise.all(WIND_PROFILE_HEIGHTS.map(function(height) {
return fetch('https://raw.githubusercontent.com/1oly/wind/main/script/wind' + height + '.json')
.then(function(response) {
if (!response.ok) {
throw new Error('Failed to fetch wind data for ' + height);
}
return response.json();
})
.then(function(records) {
windGridCache[height] = buildWindGrid(records);
});
})).catch(function(error) {
console.error(error);
windGridPromise = null;
throw error;
});
}
return windGridPromise;
}
function buildWindGrid(records) {
var uRecord = records.find(function(record) { return record.header.parameterNumber === 2; });
var vRecord = records.find(function(record) { return record.header.parameterNumber === 3; });
if (!uRecord || !vRecord) {
return null;
}
var header = uRecord.header;
return {
header: header,
u: uRecord.data,
v: vRecord.data,
nx: header.nx,
ny: header.ny,
lo1: header.lo1,
la1: header.la1,
dx: header.dx,
dy: header.dy
};
}
function interpolateWindAt(grid, lon, lat) {
if (!grid) return null;
var i = (lon - grid.lo1) / grid.dx;
var j = (grid.la1 - lat) / grid.dy;
if (isNaN(i) || isNaN(j)) return null;
if (i < 0 || j < 0 || i > grid.nx - 1 || j > grid.ny - 1) return null;
var fi = Math.floor(i);
var fj = Math.floor(j);
var ci = Math.min(fi + 1, grid.nx - 1);
var cj = Math.min(fj + 1, grid.ny - 1);
var tx = i - fi;
var ty = j - fj;
function vectorAt(x, y) {
var idx = y * grid.nx + x;
var uVal = grid.u[idx];
var vVal = grid.v[idx];
if (uVal === null || vVal === null || typeof uVal === 'undefined' || typeof vVal === 'undefined') {
return null;
}
return [uVal, vVal];
}
var g00 = vectorAt(fi, fj);
var g10 = vectorAt(ci, fj);
var g01 = vectorAt(fi, cj);
var g11 = vectorAt(ci, cj);
if (!g00 || !g10 || !g01 || !g11) return null;
var rx = 1 - tx;
var ry = 1 - ty;
var a = rx * ry;
var b = tx * ry;
var c = rx * ty;
var d = tx * ty;
var u = g00[0] * a + g10[0] * b + g01[0] * c + g11[0] * d;
var v = g00[1] * a + g10[1] * b + g01[1] * c + g11[1] * d;
var speed = Math.sqrt(u * u + v * v);
var direction = null;
if (speed > 0) {
direction = (Math.atan2(u, v) * 180 / Math.PI + 360) % 360;
}
return { u: u, v: v, speed: speed, direction: direction };
}
function updateWindProfileStatus(message) {
if (windProfileStatusEl) {
windProfileStatusEl.textContent = message || '';
}
}
function updatePowerCurveStatus(message, allowHTML) {
if (!powerCurveStatusEl) return;
if (allowHTML) {
powerCurveStatusEl.innerHTML = message || '';
} else {
powerCurveStatusEl.textContent = message || '';
}
}
function updateFleetEstimateTotal(message) {
if (fleetEstimateTotalEl) {
fleetEstimateTotalEl.textContent = message || '';
}
}
function updateFleetEstimateDetails(message) {
if (fleetEstimateDetailsEl) {
fleetEstimateDetailsEl.textContent = message || '';
}
}
function updateFleetActualsTotal(message) {
if (fleetActualsTotalEl) {
fleetActualsTotalEl.textContent = message || '';
}
}
function updateFleetActualsDetails(message) {
if (fleetActualsDetailsEl) {
fleetActualsDetailsEl.textContent = message || '';
}
}
function updateFleetActualsContributions(onshoreText, offshoreText) {
if (fleetActualsOnshoreEl) {
fleetActualsOnshoreEl.textContent = onshoreText || '–';
}
if (fleetActualsOffshoreEl) {
fleetActualsOffshoreEl.textContent = offshoreText || '–';
}
}
function setDisplayedTurbines(features) {
displayedTurbineFeatures = Array.isArray(features) ? features.slice() : [];
if (fleetEstimateTimeoutId) {
clearTimeout(fleetEstimateTimeoutId);
}
if (!fleetEstimateTotalEl) {
return;
}
fleetEstimateTimeoutId = setTimeout(function() {
fleetEstimateTimeoutId = null;
computeFleetEstimateForShown();
}, 200);
}
function fetchActualProductionData(forceRefresh) {
if (!actualProductionPromise || forceRefresh) {
actualProductionPromise = fetch(ACTUAL_PRODUCTION_URL, { cache: 'no-cache' })
.then(function(response) {
if (!response.ok) {
throw new Error('Actual production file missing');
}
return response.json();
})
.then(function(data) {
actualProductionData = data;
return data;
})
.catch(function(error) {
console.warn('Unable to load actual production', error);
actualProductionPromise = null;
throw error;
});
}
return actualProductionPromise;
}
function refreshActualProductionDisplay() {
if (!fleetActualsTotalEl) return;
fetchActualProductionData().then(function(data) {
var info = formatActualProductionInfo(data);
updateFleetActualsTotal(info.totalText);
updateFleetActualsDetails(info.detailText);
updateFleetActualsContributions(info.onshoreText, info.offshoreText);
}).catch(function() {
updateFleetActualsTotal('No data');
updateFleetActualsDetails('Actual production unavailable right now.');
updateFleetActualsContributions('–', '–');
});
}
function formatActualProductionInfo(data) {
if (!data || typeof data !== 'object') {
return {
totalText: 'No data',
detailText: 'Actual production unavailable.',
onshoreText: '–',
offshoreText: '–',
};
}
var totals = data.totals || {};
var totalGw = convertMwToGw(totals.total_mw);
var onshoreGw = convertMwToGw(totals.onshore_mw);
var offshoreGw = convertMwToGw(totals.offshore_mw);
var timestamp =
data.latest_timestamp_utc ||
getLatestAreaTimestamp(data.areas) ||
data.generated_at;
var isFresh = timestamp ? isTimestampFresh(timestamp, 60) : false;
var freshnessSuffix = isFresh ? '' : '?';
var totalText = totalGw !== null ? formatGigawatts(totalGw) + ' GW' + freshnessSuffix : 'No data';
var detailParts = [];
if (timestamp) {
var timestampText = formatActualTimestamp(timestamp);
if (timestampText) {
var syncLabel = isFresh ? 'In sync' : 'Out of sync';
detailParts.push(syncLabel + ' – Updated ' + timestampText);
}
}
var detailText = detailParts.length ? detailParts.join(' • ') : 'Awaiting data.';
return {
totalText: totalText,
detailText: detailText,
onshoreText: onshoreGw !== null ? formatGigawatts(onshoreGw) + ' GW' : '–',
offshoreText: offshoreGw !== null ? formatGigawatts(offshoreGw) + ' GW' : '–',
};
}
function ensurePowerCurvesLoaded() {
if (!powerCurvesPromise) {
powerCurvesPromise = fetch('https://raw.githubusercontent.com/1oly/wind/main/power_curves/power_curves.json')
.then(function(response) {
if (!response.ok) {
throw new Error('Power curve file missing');
}
return response.json();
})
.then(function(data) {
powerCurveEntries = Array.isArray(data.turbines) ? data.turbines : [];
return powerCurveEntries;
})
.catch(function(error) {
console.warn('Unable to load power curves', error);
powerCurveEntries = [];
powerCurvesPromise = null;
throw error;
});
}
return powerCurvesPromise;
}
function selectPowerCurve(capacityKw, hubHeight) {
if (!powerCurveEntries.length || typeof capacityKw !== 'number') {
return null;
}
var best = null;
var bestScore = Infinity;
for (var i = 0; i < powerCurveEntries.length; i++) {
var entry = powerCurveEntries[i];
var capDiff = Math.abs((entry.capacity_kw || 0) - capacityKw);
var heightDiff = Math.abs((entry.hub_height_m || 0) - (hubHeight || 0));
var score = capDiff + 0.1 * heightDiff;
if (score < bestScore) {
bestScore = score;
best = entry;
}
}
return best;
}
function interpolatePowerFromCurve(curve, windSpeed) {
if (!curve || !Array.isArray(curve.ws) || !Array.isArray(curve.power_mw)) {
return null;
}
var wsArr = curve.ws;
var powerArr = curve.power_mw;
if (windSpeed <= wsArr[0]) return powerArr[0];
if (windSpeed >= wsArr[wsArr.length - 1]) return powerArr[powerArr.length - 1];
for (var i = 0; i < wsArr.length - 1; i++) {
var lowerWs = wsArr[i];
var upperWs = wsArr[i + 1];
if (windSpeed >= lowerWs && windSpeed <= upperWs) {
var ratio = (windSpeed - lowerWs) / (upperWs - lowerWs || 1);
return powerArr[i] + ratio * (powerArr[i + 1] - powerArr[i]);
}
}
return null;
}
function interpolateSpeedAtHeight(profile, targetHeight) {
if (!profile.length || typeof targetHeight !== 'number' || isNaN(targetHeight)) {
return null;
}
if (targetHeight <= profile[0].height) {
return profile[0].speed;
}
if (targetHeight >= profile[profile.length - 1].height) {
return profile[profile.length - 1].speed;
}
for (var i = 0; i < profile.length - 1; i++) {
var lower = profile[i];
var upper = profile[i + 1];
if (targetHeight >= lower.height && targetHeight <= upper.height) {
var ratio = (targetHeight - lower.height) / (upper.height - lower.height || 1);
return lower.speed + ratio * (upper.speed - lower.speed);
}
}
return null;
}
function estimateTurbinePower(windSpeed, ratedPowerMw) {
if (typeof windSpeed !== 'number' || isNaN(windSpeed) || typeof ratedPowerMw !== 'number' || isNaN(ratedPowerMw)) {
return null;
}
var cutIn = 3;
var rated = 12;
var cutOut = 25;
if (windSpeed < cutIn || windSpeed >= cutOut) {
return 0;
}
if (windSpeed >= rated) {
return ratedPowerMw;
}
var fraction = (windSpeed - cutIn) / (rated - cutIn);
var powerFraction = Math.pow(Math.max(0, Math.min(1, fraction)), 3);
return ratedPowerMw * powerFraction;
}
function sampleWindProfile(lon, lat) {
var profile = [];
WIND_PROFILE_HEIGHTS.forEach(function(height) {
var grid = windGridCache[height];
if (!grid) return;
var result = interpolateWindAt(grid, lon, lat);
if (result) {
profile.push({
height: parseInt(height, 10),
speed: result.speed,
direction: result.direction
});
}
});
profile.sort(function(a, b) { return a.height - b.height; });
return profile;
}
function plotWindProfileAt(lon, lat, hubHeight) {
if (!windProfileChartEl) return Promise.resolve(null);
var requestId = ++lastWindProfileRequestId;
updateWindProfileStatus('Loading wind profile…');
return ensureWindGridsLoaded().then(function() {
if (requestId !== lastWindProfileRequestId) {
return null;
}
var profile = sampleWindProfile(lon, lat);
if (!profile.length) {
Plotly.purge(windProfileChartEl);
updateWindProfileStatus('No wind profile data available here.');
return {profile: profile, hubSpeed: null};
}
var speeds = profile.map(function(p) { return p.speed; });
var heights = profile.map(function(p) { return p.height; });
var shapes = [];
var annotations = [];
if (typeof hubHeight === 'number' && !isNaN(hubHeight)) {
shapes.push({
type: 'line',
xref: 'paper',
yref: 'y',
x0: 0,
x1: 1,
y0: hubHeight,
y1: hubHeight,
line: {
color: '#888',
width: 1,
dash: 'dash'
}
});
annotations.push({
xref: 'paper',
yref: 'y',
x: 0.01,
y: hubHeight,
text: 'Hub height',
showarrow: false,
font: {size: 10, color: '#666'},
yshift: 10,
align: 'left'
});
}
Plotly.newPlot(windProfileChartEl, [{
x: speeds,
y: heights,
mode: 'lines+markers',
name: 'Wind speed',
hovertemplate: 'Height: %{y} m<br>Speed: %{x:.1f} m/s<extra></extra>'
}], {
margin: {l: 50, r: 10, t: 10, b: 35},
xaxis: {title: 'Wind speed (m/s)'},
yaxis: {title: 'Height (m)'},
shapes: shapes,
annotations: annotations
}, {responsive: true, displayModeBar: false});
updateWindProfileStatus('');
var hubSpeed = interpolateSpeedAtHeight(profile, hubHeight);
return {profile: profile, hubSpeed: hubSpeed};
}).catch(function(error) {
Plotly.purge(windProfileChartEl);
updateWindProfileStatus('Failed to load wind profile data.');
throw error;
});
}
function renderPowerCurve(curveData, hubSpeed, ratedPowerMw) {
if (!powerCurveChartEl) return;
if (curveData && Array.isArray(curveData.ws) && Array.isArray(curveData.power_mw)) {
var traces = [{
x: curveData.ws,
y: curveData.power_mw,
mode: 'lines',
name: curveData.name || 'Power curve',
hovertemplate: 'Wind: %{x:.1f} m/s<br>Power: %{y:.2f} MW<extra></extra>'
}];
var pointPower = null;
if (typeof hubSpeed === 'number' && !isNaN(hubSpeed)) {
pointPower = interpolatePowerFromCurve(curveData, hubSpeed);
traces.push({
x: [hubSpeed],
y: [pointPower],
mode: 'markers',
name: 'Current wind',
marker: {color: '#d62728', size: 8},
hovertemplate: 'Current wind<br>Wind: %{x:.1f} m/s<br>Power: %{y:.2f} MW<extra></extra>'
});
var link = '<a href="https://gitlab.windenergy.dtu.dk/TOPFARM/PyWake" target="_blank" rel="noopener">PyWake</a>';
updatePowerCurveStatus(curveData.name ? 'Generic power curve ' + curveData.name + ' made with ' + link : '', true);
} else {
updatePowerCurveStatus('No hub-height wind speed available.');
}
Plotly.newPlot(powerCurveChartEl, traces, {
margin: {l: 50, r: 10, t: 10, b: 40},
xaxis: {title: 'Wind speed (m/s)'},
yaxis: {title: 'Power (MW)'},
showlegend: false
}, {responsive: true, displayModeBar: false});
return;
}
renderGenericPowerCurve(hubSpeed, ratedPowerMw);
}
function renderGenericPowerCurve(hubSpeed, ratedPowerMw) {
if (!powerCurveChartEl) return;
if (typeof ratedPowerMw !== 'number' || isNaN(ratedPowerMw) || ratedPowerMw <= 0) {
Plotly.purge(powerCurveChartEl);
updatePowerCurveStatus('No turbine capacity data available.');
return;
}
var speeds = [];
var powers = [];
for (var speed = 0; speed <= 30; speed += 0.5) {
speeds.push(Number(speed.toFixed(1)));
powers.push(estimateTurbinePower(speed, ratedPowerMw));
}
var traces = [{
x: speeds,
y: powers,
mode: 'lines',
name: 'Generic power curve',
hovertemplate: 'Wind: %{x:.1f} m/s<br>Power: %{y:.2f} MW<extra></extra>'
}];
if (typeof hubSpeed === 'number' && !isNaN(hubSpeed)) {
var currentPower = estimateTurbinePower(hubSpeed, ratedPowerMw);
traces.push({