Put the ERE price on your own site
Show the current ERE price, its history or the whole explanation on your own website. Free and without an account: copy the code and paste it into your page. The price refreshes every hour.
Every widget names the source (Joulo, CC BY 4.0) and links to ERE Index. The price data's licence requires that attribution, so keep it visible.
The small script below the iframe lets the height grow with the content. Leave it out and the frame has a fixed height, with the content scrolling inside it. The widgets follow the visitor's light or dark mode.
Current price (compact)
This week's price with the change since last week, bid and offer, and a switch for per kWh or per ERE. Fits in a sidebar.
Preview
<iframe src="https://ere-index.nl/en/embed/price" title="Current price (compact) – ERE Index" width="100%" height="320" style="border:0;border-radius:16px;max-width:420px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>Current price (full)
As at the top of this site: the price, the change, bid and offer, plus the 52-week high, the 52-week low and the spread.
Preview
<iframe src="https://ere-index.nl/en/embed/hero" title="Current price (full) – ERE Index" width="100%" height="540" style="border:0;border-radius:16px;max-width:760px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>ERE price history
The chart over 3 months, half a year or a year, per kWh or per ERE, with the weekly prices as a table too.
Preview
<iframe src="https://ere-index.nl/en/embed/chart" title="ERE price history – ERE Index" width="100%" height="640" style="border:0;border-radius:16px;max-width:960px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>Calculator
What a kWh charged at home earns this week, gross, with a slider to work out the yield per year.
Preview
<iframe src="https://ere-index.nl/en/embed/calculator" title="Calculator – ERE Index" width="100%" height="560" style="border:0;border-radius:16px;max-width:560px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>Explanation: what are EREs?
The whole illustrated explanation: what an ERE is, how the price comes about, what charging at home earns (with calculator), frequently asked questions and sources.
Preview
<iframe src="https://ere-index.nl/en/embed/explainer" title="Explanation: what are EREs? – ERE Index" width="100%" height="900" style="border:0;border-radius:16px;max-width:960px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>Explanation by part
One part of the explanation, with text and illustration, or the frequently asked questions or the sources.
Preview
<iframe src="https://ere-index.nl/en/embed/explainer/what" title="What is an ERE? – ERE Index" width="100%" height="900" style="border:0;border-radius:16px;max-width:960px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>Separate illustrations
Only the illustration with its caption, without a link or attribution.
Preview
<iframe src="https://ere-index.nl/en/embed/graphic/ere-unit" title="What an ERE is – ERE Index" width="100%" height="640" style="border:0;border-radius:16px;max-width:420px;display:block" loading="lazy"></iframe>
<script>addEventListener("message",function(e){if(e.origin==="https://ere-index.nl"&&e.data&&e.data.type==="ere-index:height")document.querySelectorAll('iframe[src^="https://ere-index.nl/"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>