JR Batteries — Energy storage, from design to financing
Store. Optimise. Monetise.
A battery is not a standalone product. It is an energy asset: an architecture matched to your site, intelligent control, revenue you can demonstrate — and rules to comply with.
WHY NOW · 01
Generation and value no longer always coincide.
When generation exceeds demand, prices collapse — sometimes below zero. Generating is no longer enough: you need to be able to choose when to consume, store or export.
0 h
at negative prices in 2025
0 h
in 2024
0 %
of 2025 hours between 0 and −0.1 €/MWh
A count of hours is not a margin: what matters is the spread between the charging price and the discharging price.
Source: RTE, 2025 French electricity report.
Carré de la Garenne · 4.5 MWp
Built by JR Énergie — the largest rooftop plant in the Auvergne region
One asset, every use · 02
Your battery works on your site and on the markets.
It optimises your whole site: what you consume, what you export, what your grid connection can take — and therefore your returns. Run with an aggregator, the same battery also earns on the grid. You do not have to choose: the control system arbitrates continuously.
« I have solar panels »
You sell your midday surplus for next to nothing. The battery keeps it for your expensive hours.
« I have a hydro plant »
You generate run-of-river, not when prices rise. The battery shifts the export.
« My site pays dearly for its peaks »
Your demand peaks inflate the bill. The battery absorbs them and protects your machines.
« I have land and a grid connection »
With no generation or consumption on site, the battery lives off the electricity markets.
STACKING REVENUE · 03
Value adds up, lever after lever.
A battery does not earn in one way but in five. Each lever adds its share: the control system stacks them according to your situation, and activates them at the right moment.
A DAY UNDER CONTROL · 04
Charge at the bottom, sell the peak.
It charges at the bottom, it exports at the top.
charging from the grid
charging from solar
export — sale
solar generation
3 AM — BUY LOW
the battery charges from the grid, in off-peak hours
8 AM — FIRST PEAK
part of the stock is sold at the morning price
1 PM — CHARGE AT THE BOTTOM
prices on the floor: charge instead of exporting
7 PM — SELL HIGH
export waits for the evening peak — you choose your price
OPTIMISATION · 05
The intelligence decides, the battery executes.
A battery is only worth what controls it. Six streams of information go in, one decision comes out.
It draws two decisions from them: the one for right now — charge, discharge, stand back — and the one for tomorrow, settled the day before with the aggregator that takes your capacity to market. The five levers are not chosen once and for all: their share is recalculated hour by hour.
TURNKEY · 06
Every step comes with a rule. We take care of it.
Planning, grid connection, contracts, safety, operation: our partner installer JR Énergie carries the project end to end — from the planning file to maintenance. You sign, we deliver.
01PLANNING — declarations and permits filed for you
✓ TAKEN CARE OF
02GRID CONNECTION — DSO/TSO file prepared and followed through
✓ TAKEN CARE OF
03CONTRACTS & MARKETS — aggregator chosen, contracts structured
✓ TAKEN CARE OF
04SAFETY — fire study, insurer compliance
✓ TAKEN CARE OF
05OPERATION & END OF LIFE — maintenance, recycling, producer responsibility scheme
✓ TAKEN CARE OF
THE ECOSYSTEM · 07
The technology, the site and the assembly — aligned.
A successful storage project aligns three trades. You have a single point of contact — and every role is clear.
RELYEZ — Technology
Assembler of cabinets and containers for storing electricity. From the cell up to the software layer.
TECHNOLOGY PARTNERSHIP
JR BATTERIES — Import & distribution
Logistics, compliance and end of life of the products.
YOUR POINT OF CONTACT
JR ÉNERGIE — Installer & operator
Studies, installation, grid connection, maintenance. A team of 50 people since 2016, partner installer.
PARTNER INSTALLER
WHY JR · 08
Field experience behind the innovation.
Behind JR Batteries is a group that installs and operates real energy assets. Jean Renard, an engineer who came up through EDF, founded JR Énergie in 2016 in Cournon-d'Auvergne: a local team, solar plants delivered across France, continuity ensured by the team.
EDF
More than 30 years of engineering experience
2016
JR Énergie founded
TODAY
JR Batteries: storage as an asset
LOCAL TEAM IN AUVERGNE
close to 70 people in the group, from the design office to the site
TRACK RECORD
1,500 plants installed in France, 40 MWp in operation· read the La Montagne article →
QUALIFELEC SPV1 · SPV2 · SPV3
work at every voltage level, including high voltage
ASSESSMENT · 09
Returns are decided at the sizing stage.
The assessment starts from your load and consumption curves. Sized properly — from your asset, your grid connection or your land — your storage reaches its best payback time.
1 · YOUR PROFILE
site, activity, objective
2 · YOUR DATA
load curves, generation, contracts
3 · USE CASE
solid / possible / not demonstrated
4 · STUDY
architecture, net value, financing
REPLY WITHIN 24 WORKING HOURS · FREE · YOUR DATA STAYS CONFIDENTIAL