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No. 01 Energy control for business · Pakistan
Total control of every device, automated by AI: inverters, batteries, chillers, compressors, ACs, switches and meters on one screen, with an AI mode that learns your site and runs it to your rules.
Joulvant puts a company’s solar, batteries, grid supply and heavy loads under one control system. It holds the maximum demand down, keeps peak-hour units off the grid, keeps export under the limit, and keeps every site running through load-shedding.
No. 02 Where the money goes
Units are only part of it. The charges that hurt most are set by single bad half hours, by the time of day, and by the hours the grid is not there at all. Joulvant works on each of them separately.
The MDI charge follows the highest 30-minute demand between two readings. A compressor and a chiller starting together on a hot afternoon can cost more than a week of careful running.
Peak units cost much more than off-peak ones, and the peak window moves with the season and the DISCO’s notices.
On a net-metered connection export has its own demand reading. When a line stops on a sunny day, the solar output turns around and goes out to the grid.
Generators start late, run longer than they need to and carry loads that could have waited. Where there is a battery, one spent too early leaves the site dark at the worst time.
No. 03 Demand and export control
A large site makes and uses a great deal of power during the day. If a line trips, its load disappears in a second, and every kilowatt the solar was feeding it goes straight out to the grid, setting an export demand reading the bill will remember.
The reading is a 30-minute average. Trim the inverters within 60 seconds and a 500 kW surge counts for one thirtieth of the window: about 17 kW on the half-hour figure, not 500. Speed, not size, decides the bill.
No. 04 The system
Four parts, one line between each. Nothing on your network is opened to the internet.
The inverters, generators, meters, breakers, chillers, ACs and any batteries you already own.
A small industrial computer that reads everything locally and runs the plan on site.
Companies, sites and people; history, reports and nightly backups of every Hub.
The Android app for the floor, the console for energy managers and finance.
No. 05 AI mode
AI mode plans the next 24 hours for every site and runs it. Your goals come first, in the order you set; your settings are its starting points. Each day is scored against the goals, and the plan moves one setting at a time, keeping a step only if the following days get better.
No. 06 Industries
Every sector carries a different load and a different risk. The audit starts from yours.
Motors, compressors and humidification around the clock. Holding the MDI with staggered starts, export control on large rooftops, generator hours through cuts.
Compressors that must keep product cold. Pre-cooling before the peak, easing within a set temperature band, rooms that are never switched.
HVAC to strict conditions beside process loads that cannot be touched. Planning around fixed loads, and a full log of every action for audits.
Chillers, splits and lifts following the day and the weather. Peak-hour avoidance, AC easing by zone, solar used on site first.
Banks, retail, schools and depots, each with its own inverter. Every site on one screen, the same rules everywhere, outage readiness across the estate.
Loads that must never stop next to loads that can wait. Reserve kept for critical supply, generator and grid working together.
No. 07 How we work
Every inverter, meter, breaker and large load listed; the last bills read.
Each device graded, the savings case, and what (if anything) must be added.
One per site, on the network, read-only from day one.
The site measured as it runs today: the baseline every saving is judged against.
Controls switched on one device at a time, with your approval and limits.
Results against the bill, what the plan did, and what to change next.
No. 08 Equipment
Each device is reached the most direct way its maker allows. The audit confirms the exact model and firmware on your site.
| Equipment | How the Hub reaches it | What it gives | Status |
|---|---|---|---|
| SolaX hybrid invertersX1 and X3, with LiFePO4 batteries | The SolaX dongle on the site network; SolaX cloud as fallback | Solar, battery, grid, load; charge windows, reserve, export limit | Available |
| Inverex Nitrox & Deye-family string invertersThree-phase, Solarman loggers | The Solarman logger on the site network | Output, voltages, currents, energy, temperature | Available |
| Tuya breakers, meters & switches | Tuya local protocol | Power, energy, voltage; on and off | Available |
| Orient Wi-Fi air conditioners | The AC’s Wi-Fi module on the site network | Power, mode, set point; easing and switching | Available |
| TCL air conditioners | The maker’s cloud, rate-limited | Power and state; Gen-mode caps and control | Available |
| Android & Google TVs | Android TV remote protocol | A remote in the app | Available |
| Huawei SUN2000SmartLogger 3000A or SDongle | Modbus TCP | Plant readings, meter, power and export limits | In development |
| Sungrow, Growatt, GoodWe, Solis | Their loggers’ Modbus or local interfaces | Readings first; limits where exposed | In development |
| Modbus energy metersEastron, CHINT, at the incomer or feeders | Modbus RTU or TCP | Import, export and demand at the connection point | In development |
| Generator controllers | Modbus from the controller | Running state, load, fuel; start and stop where allowed | In development |
No. 09 Promises
A control system on a factory floor must be safe when it fails, open about what it does, and closed to everyone who should not be in it.
No. 10 Plans
Hubs are supplied per site. The subscription covers the cloud, the app, reports, alarms and backups. Pricing depends on the sites and devices and is quoted after the audit.
| HomeHouses | ProOffices, retail, schools | IndustrialFactories · pilot sites | |
|---|---|---|---|
| Live view, history and the app | ✓ | ✓ | ✓ |
| Load-shedding aware battery planning | ✓ | ✓ | ✓ |
| AI mode with goals and self-correction | ✓ | ✓ | ✓ |
| Many sites in one account, team roles | — | ✓ | ✓ |
| Demand watch, alarms, monthly reports | — | ✓ | ✓ |
| Demand limiting across the site’s loads | — | — | ✓ |
| Export control on net-metered sites | — | add-on | ✓ |
| Generator, grid and solar working together | — | — | ✓ |
| Pricing | On request | On request | By arrangement |
No. 11 Questions
No. Joulvant is built to work with what is installed. The audit lists what each device allows; where a meter or logger makes a real difference, it is priced in the report before anything is bought.
No. Every device starts read-only. Control is switched on one device at a time by the account’s owner, inside limits you set, and every change is read back and logged.
The Hub carries on. It keeps its settings and the day’s plan on site and talks to the equipment over the local network; the cloud catches up when the link returns.
It depends on the maker. Some ask for their consent before another system controls their inverters. The audit checks the terms for your equipment, and control is only switched on where it is allowed.
The Hub reads the meter at the connection point and lowers the inverters’ power limit within seconds, then raises it as the load returns. Where the maker offers a meter-based limiter, it holds a hard ceiling underneath.
The people you invite, in the roles you give them. Each company’s sites and history are kept apart from every other customer’s.
No. 12 Request an energy audit
Tell us the site and what it runs on. We visit, grade the equipment, read the bills and give you the plan before anything is bought.
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