# Release 2026.8.0 · OpenEMS/openems

**URL:** <https://community.openems.io/t/release-2026-8-0-openems-openems/10914>\
**Category:** Releases\
**Created:** [August 1, 2026, 12:20pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914 "2026-08-01T12:20:03Z")\
**Posts on this page:** 15\
**Page:** 1

<div class="post-metadata">

**Author:** ![stefan.feilmeier](https://community.openems.io/user_avatar/community.openems.io/stefan.feilmeier/32/2585_2.png) [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\
**Post date:** [August 1, 2026, 12:20pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/1 "2026-08-01T12:20:03Z")

</div>

> **[Release 2026.8.0 · OpenEMS/openems](https://github.com/OpenEMS/openems/releases/tag/2026.8.0)**
>
> Release Highlights
> 
> New implementations:
> 
> Bitcoin Miners with Braiins OS
> Fix-Reactive-Power App
> App for German EEG 2025 (avoid feed-in during negative spot prices)
> 
> 
> Improved implementations:
> 
> ENTS...

---

<div class="post-metadata">

**Author:** ![gloithaler](https://community.openems.io/user_avatar/community.openems.io/gloithaler/32/2549_2.png) [@gloithaler](https://community.openems.io/u/gloithaler)\
**Post date:** [August 7, 2026, 12:24pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/2 "2026-08-07T12:24:46Z")

</div>

Why was “ **Bitcoin Miners** with Braiins OS” added to OpenEMS and what is the purpose of this new component?

---

<div class="post-metadata">

**Author:** ![stefan.feilmeier](https://community.openems.io/user_avatar/community.openems.io/stefan.feilmeier/32/2585_2.png) [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\
**Post date:** [August 7, 2026, 9:30pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/3 "2026-08-07T21:30:48Z")

</div>

This new Bundle allows connection to Bitcoin Miners that run the Braiins OS operating system. This way OpenEMS

- can control - pause/resume - bitcoin mining via direct API calls
- can handle a time schedule when bitcoin mining should be active
- can read the power consumption and visualize it in Live and History
- can - given a time schedule is existing - plan the future power consumption from bitcoin mining

See this screenshot:

 ![grafik](https://community.openems.io/uploads/default/original/2X/a/ad291cb8051e465280b703a8fd131dec3b82224c.png)

We also plan to release this as a free (DIY) FEMS App for FENECON customers.

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 8, 2026, 10:36am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/4 "2026-08-08T10:36:46Z")

</div>

After having updated to 2026.8.0 (using the current/old UI) we’re encountering the issue that the content area of the _live view_ stays empty:

 ![empty live view](https://community.openems.io/uploads/default/original/2X/4/45ca1b3321a9d26db523098550af39528fb76e94.png)  
The _history view_ works fine:  
 ![image](https://community.openems.io/uploads/default/original/2X/7/7307f5c133079531df04ba9b7eb7ea3f85fdd667.png)  
For other parts, e.g., _configure components_ or _log view_ the content area also stays empty and only displays content after you have clicked in the search field once and then in the content area again.  
We’re running OpenEMS edge + UI behind a reverse proxy (ngninx). The problem persists with different computers and web browsers. The browser developer tools web console in Firefox shows only some of following errors and otherwise just get with http/2 200 result:

```auto
Source-Map-Fehler: No sources are declared in this source map.
Ressourcen-Adresse: https://example.com/chunk-2HK25VJH.js
Source-Map-Adresse: chunk-2HK25VJH.js.map

```

Any idea what the issue could be, or how to debug this?

---

<div class="post-metadata">

**Author:** ![chpo](https://community.openems.io/letter_avatar_proxy/v4/letter/c/cdc98d/32.png) [@chpo](https://community.openems.io/u/chpo)\
**Post date:** [August 16, 2026, 6:08pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/5 "2026-08-16T18:08:12Z")

</div>

I have the same problem. Switching fast between History and Live sometimes resolves it and Live works after that normally.

I tried to find the issue, but only got that far: it looks like subscriptions in the edgeRpc UI are missing/failing - currentData only has \_sum/State and not all the other ones.

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 16, 2026, 6:58pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/6 "2026-08-16T18:58:10Z")

</div>

Also some “detail pages” in the history only show a blank (empty, white) page for me, e.g.,  
[https://example.com/device/0/history/gridchart](https://example.com/device/0/history/gridchart)  
[https://example.com/device/0/history/productionchart](https://example.com/device/0/history/productionchart)  
[https://example.com/device/0/history/digitaloutputchart](https://example.com/device/0/history/digitaloutputchart)  
[https://example.com/device/0/history/consumptionchart](https://example.com/device/0/history/consumptionchart)

The source code (of one example) is:

```auto
<!DOCTYPE html>
<html lang="en" class="notranslate">

<head>
  <meta charset="utf-8"/>
  <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
  <base href="/"/>
  <meta name="viewport" content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
  <meta name="format-detection" content="telephone=no"/>

  <!-- Workaround -> has to be removed, icons should be already included in materials -->
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet"/>

  <!-- favicon; generated using https://realfavicongenerator.net -->
  <link rel="apple-touch-icon" sizes="180x180" href="apple-touch-icon.png">
  <link rel="icon" type="image/png" sizes="32x32" href="favicon-32x32.png">
  <link rel="icon" type="image/png" sizes="16x16" href="favicon-16x16.png">
  <link rel="manifest" href="site.webmanifest">
  <link rel="mask-icon" href="safari-pinned-tab.svg" color="#f4a942">
  <meta name="msapplication-TileColor" content="#f4a942">
  <meta name="theme-color" content="#f4a942">
  <script type="text/javascript" src="theme-loader.js" defer=""></script>
<link rel="stylesheet" href="styles.css"></head>

<body>
  <app-root></app-root>
  <noscript>Please enable JavaScript to continue using this application.</noscript>
<link rel="modulepreload" href="chunk-VP6ZT7SY.js"><link rel="modulepreload" href="chunk-MBMQZEST.js"><link rel="modulepreload" href="chunk-FVSQWLPJ.js"><link rel="modulepreload" href="chunk-QMIOFL7S.js"><link rel="modulepreload" href="chunk-XQAGPSDN.js"><link rel="modulepreload" href="chunk-QPB3BJD4.js"><link rel="modulepreload" href="chunk-VW4RYTEG.js"><link rel="modulepreload" href="chunk-DVJAVNJ2.js"><link rel="modulepreload" href="chunk-BLJOTWRJ.js"><link rel="modulepreload" href="chunk-EVRNUXGA.js"><script src="polyfills.js" type="module"></script><script src="main.js" type="module"></script></body>

</html>

```

The pages `autarchychart` and `selfconsumptionchart` are displayed correct.

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 18, 2026, 7:53pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/7 "2026-08-18T19:53:44Z")

</div>

I’m having the same issue with current develop (2026.9). Quickly switching between live & history also brings live up, but history detail charts stay blank for me.

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 23, 2026, 7:26pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/8 "2026-08-23T19:26:21Z")

</div>

Opening the web UI directly, without going through a reverse proxy, does _not_ change anything. @chpo are you also using the docker build, or are you running a native debian/systemd installation?

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<div class="post-metadata">

**Author:** ![chpo](https://community.openems.io/letter_avatar_proxy/v4/letter/c/cdc98d/32.png) [@chpo](https://community.openems.io/u/chpo)\
**Post date:** [August 24, 2026, 6:03am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/9 "2026-08-24T06:03:08Z")

</div>

I’m using a self build docker image in a nginx reverse proxy setup. But there is nothing special in the configuration - just two docker containers (edge and nginx). It has been running for month without this problem.

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 24, 2026, 7:51am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/10 "2026-08-24T07:51:05Z")

</div>

@da-Kai as you are providing the official docker containers and do know about the details of OpenEMS, do you have an idea if using docker may have an influence here and how to debug further?

---

<div class="post-metadata">

**Author:** ![stefan.feilmeier](https://community.openems.io/user_avatar/community.openems.io/stefan.feilmeier/32/2585_2.png) [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\
**Post date:** [August 24, 2026, 4:17pm UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/11 "2026-08-24T16:17:31Z")

</div>

We had a similar issue recently with our builds, because the build configuration was missing the “prod” argument. I am not too familiar with the Docker builds, but it looks like this could be the issue here as well:

[Dockerfile.edge](https://github.com/OpenEMS/openems/blob/develop/tools/docker/ui/Dockerfile.edge#L3) defines

```auto
ARG VERSION="openems,openems-edge-docker"

```

and builds with

```auto
node_modules/.bin/ng build -c "$VERSION";

```

Can you please test with the first line changed to:

```auto
ARG VERSION="openems,openems-edge-docker,prod"

```

Same applies to [Dockerfile.backend](https://github.com/OpenEMS/openems/blob/develop/tools/docker/ui/Dockerfile.backend#L3).

---

<div class="post-metadata">

**Author:** ![chpo](https://community.openems.io/letter_avatar_proxy/v4/letter/c/cdc98d/32.png) [@chpo](https://community.openems.io/u/chpo)\
**Post date:** [August 25, 2026, 5:51am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/12 "2026-08-25T05:51:13Z")

</div>

I change it to

```auto
ng build -c "openems,openems-edge-prod,prod"

```

and the UI works again. Thanks for the heads-up.

---

<div class="post-metadata">

**Author:** ![stefan.feilmeier](https://community.openems.io/user_avatar/community.openems.io/stefan.feilmeier/32/2585_2.png) [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\
**Post date:** [August 25, 2026, 6:54am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/13 "2026-08-25T06:54:07Z")

</div>

I fixed it upstream:

> <https://github.com/OpenEMS/openems/pull/3911>
>
> See discussion at https://community.openems.io/t/release-2026-8-0-openems-openem…s/10914/10

---

<div class="post-metadata">

**Author:** ![sjjh](https://community.openems.io/user_avatar/community.openems.io/sjjh/32/2296_2.png) [@sjjh](https://community.openems.io/u/sjjh)\
**Post date:** [August 25, 2026, 7:12am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/14 "2026-08-25T07:12:28Z")

</div>

Thx for your support! Happy to have it in 2026.9. 🙂

---

<div class="post-metadata">

**Author:** ![schiegg](https://community.openems.io/letter_avatar_proxy/v4/letter/s/ed655f/32.png) [@schiegg](https://community.openems.io/u/schiegg)\
**Post date:** [August 27, 2026, 6:56am UTC](https://community.openems.io/t/release-2026-8-0-openems-openems/10914/15 "2026-08-27T06:56:24Z")

</div>

Debugging since days why my new UI widget is not working, I was just up to creating an issue with the switch to the newer Angular version before I luckily saw your backport commit and tried again which lead me here 😉 I can confirm that the addition of “prod” fixes the issue.

For future readers: Watch out because DockerHub image `2026.8.0` contains the bug as well.