Dynamic ESS with the new french ENGIE contract "Elec Happy Heures"

Q&A and troubleshooting DESS
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1

Hello

I have just suscribed to this new ENGIE contract. It provides variable KWh prices as follows
from 00:00 to 06:00 0,129 Eur
from 15:00 to 17:00 “almost” free
The rest of the time 0,2448 Eur
I would like to use Dynamic ESS to use these free or cheap hours to load my batteries (2x14 KVA) but I’m lost in the setup.
I don’t want to sell my production. Just to optimize my consumption. My contract is limited to 12 KVA but I have protected my installation to never exceed 40A 220V on the cables.
Can anyboby help in indicating what I should reply to the different questions?
Many thanks

2

You can use scheduled charge without DESS (just ESS) to charge the batteries during these hours.

You can use DESS but it will only charge what it thinks you’re gonna use, probably not 100% charge daily.

You mean what settings to use in DESS? This should be pretty self explanatory for whoever installed the system. What specifically do you need to know?

3

Sorry for my beginner questions. You are probably right. ESS may just have the features I need.

In fact I just need to set ESS (or DESS) so that it loads the batteries with these priorities
1/ when the panels produce energy
2/ when electricity is free (15:00 - 17:00)
3/ when electricity is cheap (00:00 - 06:00)

But I confess ESS/DESS settings don’t look so self explanatory to me and I would appreciate some help in this matter.

Anyway many thanks for the replies.

4

First decide if you want to go ESS or DESS.

If you have a working grid connected system i assume ESS is already configured? Then just program the scheduled charging as described in the manual.

For DESS there is a manual that explains the basics, you need to select fixed price and input the prices manually. Other settings depend on your system.

5

Thank you. ESS has what I need and sorry I must have read TFM before requesting help. Regards

6

Well I have programmed ESS for scheduled charges. Seems quite simple (from 15:00 for 02:00 SoC 100%). However while everything seem to go well, scheduled charges still remain disabled and at 15:00 nothing happened even if the batteries were not at 100% SoC.
This time before requesting help I have tried to find an answer in TFM but without any success. What did I do wrong? What else should I check?

7

You can’t enable them?

8

Bonjour,

Je viens de prendre la même offre, en réalité je pense qu’il non pas pensé à cette configuration avec batterie, c’est tellement marginale!

En gros activation de l’offre ce jour, j’ai activé un scheduler pendant 2h de 15h a 17h a 100%.

Résultat quand la nuit commence à tomber, je passe sur batterie plutôt que le réseau.

A la base ils ont dû prévoir le coup car l’abonnement est 50e plus cher.

Résultat, sur 560e avec panneau environ 200 a 250e d’économie, donc ultra rentable.

@+