Dridh Energy

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Power for Work That Can't Stop.

Clinics, kitchens, resorts, showrooms, print farms and casting floors all run something a power cut mustn't touch. We're taking the battery, battery brain and inverter we build for homes up to commercial scale, engineered around what your site can't lose.

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Six kinds of site, in depth

Six kinds of site, in depth

What Fails, and How We Hold It.

Open your kind of site: what it runs that can't go down, what a power cut does to each of those today, and what changes with a Dridh system.

  1. Care That Can't Wait for a Generator.

    A nursing home, a day-care surgery centre, a diagnostic lab: each runs equipment that watches patients, keeps them breathing or gives answers that can't be redone. Most rely on a diesel generator behind a changeover panel, with a small UPS here and there. The seconds in between are where things go wrong.

    Running on the grid.

    GridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. ICU monitors & ventilators

      Normally: Watch and support the sickest patients, around the clock.

      In a power cut today: Units without their own battery reboot. Trends and settings are lost.

      With Dridh: No gap to ride through, so nothing reboots.

    2. Operation theatre

      Normally: Surgical lights, anaesthesia workstation and electrosurgery.

      In a power cut today: The theatre goes dark mid-procedure until the generator picks up.

      With Dridh: The lights don't flicker. The procedure carries on.

    3. Oxygen concentrators

      Normally: Steady oxygen for patients on the wards.

      In a power cut today: Flow stops, and waits for someone to restart it by hand.

      With Dridh: Flow never stops.

    4. Vaccine & blood-bank fridges

      Normally: Hold the 2–8 °C cold chain, day and night.

      In a power cut today: Long cuts and late fuel runs put the cold chain at risk.

      With Dridh: Held at temperature, with no compressor restarts.

    5. Lab analysers & imaging

      Normally: Blood work, X-ray and ultrasound, sample after sample.

      In a power cut today: Runs abort mid-sample. Reagents and samples are wasted.

      With Dridh: Runs finish, on clean power with no stabiliser.

    What fails today
    • The gap: a generator has to start, settle and take the load. Every machine without its own battery drops in between.
    • A patchwork of UPS units, each with a lead-acid battery ageing on its own schedule, usually found out on the day one doesn't hold.
    • Diesel beside the wards: fuel to stock, servicing to schedule, and exhaust and noise where patients rest.
    • Generator power that sags and swings as big loads start, upsetting imaging and lab equipment.
    How Dridh holds it
    • Switches in 5 ms, a quarter of one AC cycle. Monitors, analysers and servers don't see the cut.
    • One central LFP battery for every critical circuit, in place of a dozen ageing UPS units. Sealed: no acid, no fumes.
    • A grid-forming inverter: clean, steady output for imaging and lab equipment, with no stabiliser.
    • Works with your generator. It becomes the reserve for long outages, not the first line.
    • Watched by our gateway: charge, backup time left and faults, caught before they become outages.
    Where we'd start
    16 kWh
    Entry system, at 10 kW
    A clinic or diagnostic centre's critical circuits.
    30–80 kW
    Stackable, as the site grows
    A nursing home's ICU, theatre and wards, air conditioning included.
    125 kW / 256 kWh
    High capacity, for larger sites
    A larger hospital block.

    A starting point. We size every system from a survey of your site.

    Plan for your clinic

  2. A Full House Doesn't Pause for a Power Cut.

    Friday night, every table taken. The power drops: the dining room goes dark, the music stops, the hoods go quiet over a hot line and the card machine freezes mid-payment. Then a generator starts out back, loud enough to hear at the tables. For a restaurant that sells an evening, not just a meal, those seconds are the review.

    Running on the grid.

    GridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. Dining room lights & music

      Normally: The scene you designed: light, colour and sound.

      In a power cut today: The room goes dark and silent mid-service.

      With Dridh: Lighting scenes and music carry on. Guests never know.

    2. Kitchen exhaust hoods

      Normally: Pull smoke and heat off the line.

      In a power cut today: Gas burners keep going while the hoods stop. Smoke and heat fill the kitchen.

      With Dridh: The hoods keep pulling. The line keeps cooking.

    3. Walk-in cold room

      Normally: Holds the day's produce, meat and seafood.

      In a power cut today: Staff guess at temperatures, and a long cut puts stock at risk.

      With Dridh: Stays cold, with no compressor restarts.

    4. Billing & card terminals

      Normally: Orders, kitchen tickets and payments.

      In a power cut today: Terminals freeze mid-payment, with the guest watching.

      With Dridh: Payments and kitchen tickets go through.

    5. Sous-vide & combi ovens

      Normally: Long, precise cooks, running to a program.

      In a power cut today: Programs reset. Hours of prep may go in the bin for food safety.

      With Dridh: Every program runs to the end.

    What fails today
    • The gap before the generator starts: a dark room, silent music and frozen billing, at the moment guests are watching.
    • Gas keeps burning when extraction stops, so smoke and heat build over a busy line in seconds.
    • A generator out back: diesel to stock, and noise and exhaust that reach the terrace and the neighbours.
    • Restarts and resets: ovens, circulators and terminals that all need someone's attention mid-service.
    How Dridh holds it
    • Switches in 5 ms: lights, music, hoods and terminals carry on as if nothing happened.
    • Silent and fume-free: no exhaust on the terrace, no engine noise at the tables.
    • Runs the room and the kitchen's critical circuits, with the dining room's air conditioning on larger systems.
    • Watched by us: you see charge and backup time left, and we see a fault before you do.
    Where we'd start
    16 kWh
    Entry system, at 10 kW
    A fine-dining kitchen and dining room's critical circuits.
    30–80 kW
    Stackable, as the site grows
    With the dining room's air conditioning on backup too.

    A starting point. We size every system from a survey of your site.

    Plan for your restaurant

  3. Where the Grid Ends, Guests Still Expect Everything.

    The views that bring guests to a hill resort, a forest homestay or a beach villa come with the weakest end of the grid: long outages, low voltage and a generator doing more work than it should. Guests pay for quiet and a view, and they review the night the power went.

    Running on the grid and the sun.

    SolarGridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. Water pumps

      Normally: Borewell and pressure pumps fill the tanks and the showers.

      In a power cut today: Taps run dry as the overhead tank empties.

      With Dridh: Water keeps flowing, day and night.

    2. Guest room air conditioning

      Normally: Rooms kept the way guests set them.

      In a power cut today: Rooms heat up, and the front desk's phone starts ringing.

      With Dridh: Rooms stay comfortable, on larger systems.

    3. Kitchen cold storage

      Normally: Stock for a kitchen far from the nearest market.

      In a power cut today: Far from town, a spoiled freezer takes days to restock.

      With Dridh: Stays cold, and the sun recharges it by day.

    4. Wi-Fi & CCTV

      Normally: Guests' calls and streaming, check-ins and the gate camera.

      In a power cut today: Wi-Fi drops, and with it payments, check-ins and guests' calls.

      With Dridh: Guests stay connected. The cameras keep recording.

    5. Paths & outdoor lighting

      Normally: Steps, paths and the pool, lit after dark.

      In a power cut today: Paths and steps go dark, on a hillside, at night.

      With Dridh: Lit all night, on the sun stored by day.

    What fails today
    • Long outages at the end of the line, and voltage that sags when the grid is on, straining pumps and air conditioners.
    • Grid-tied solar switches off with the grid, so the panels sit idle exactly when they're needed.
    • A generator running for hours: diesel hauled up a hill road, and noise where guests came for quiet.
    • At a holiday home or an Airbnb, there may be no one on site to start the generator at all.
    How Dridh holds it
    • Solar, battery and inverter as one system: the sun runs the property by day and fills the battery for the night.
    • Switches in 5 ms. Guests don't notice the grid leaving.
    • A grid-forming inverter: steady voltage even at a weak end of the line, so pumps and air conditioners aren't strained.
    • Runs unattended and is watched remotely. An empty holiday home is still looked after.
    • The generator becomes a rare reserve, not a nightly routine.
    Where we'd start
    Swayam
    Solar, battery and inverter as one system
    A holiday home or an Airbnb: the same system we build for homes.
    30–80 kW
    Stackable, as the site grows
    A boutique resort's rooms, pumps and kitchen, with solar.
    125 kW / 256 kWh
    High capacity, for larger sites
    A larger property.

    A starting point. We size every system from a survey of your site.

    Plan for your property

  4. The Showroom Stays Lit. The Sale Goes Through.

    A jewellery store, a car showroom, a designer flagship: every detail of the space is there to make the product look its best. A power cut turns it into a dark room with blank screens and an unwatched door, at the moment a customer is deciding.

    Running on the grid.

    GridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. Display & track lighting

      Normally: The light the product is sold under.

      In a power cut today: Displays go dark. The product loses its light.

      With Dridh: Not a flicker. Scenes and colour stay as set.

    2. CCTV, alarms & access

      Normally: Cameras, sensors and door locks over a store full of stock.

      In a power cut today: Cameras reboot and leave gaps in the footage. Alarms reset.

      With Dridh: Recording carries on. Alarms and locks never reset.

    3. Billing & card terminals

      Normally: The counter, where the sale closes.

      In a power cut today: Payments fail mid-transaction, at the counter.

      With Dridh: The payment goes through.

    4. Climate control

      Normally: A cool, quiet floor, however busy it gets.

      In a power cut today: The air conditioning stops, and a busy floor warms up fast.

      With Dridh: Cool and quiet, on larger systems.

    5. Screens & video walls

      Normally: Campaigns, configurators and the brand film.

      In a power cut today: Screens go blank, and players lose their place.

      With Dridh: Content keeps playing.

    What fails today
    • The gap before backup: lights, screens and terminals drop, and everything that reboots takes minutes to come back.
    • A generator at the kerb: noise and exhaust at the entrance you designed.
    • A small UPS under the counter covers the billing PC, not the store.
    • Power that sags and spikes, wearing out LED drivers and display electronics early.
    How Dridh holds it
    • Switches in 5 ms: the lighting doesn't flicker, the screens don't blank and the payment completes.
    • Clean, steady output for LED drivers, screens and electronics, with no stabiliser.
    • Silent and sealed: no generator at the door, no fumes in the store.
    • One monitored system for lighting, security and billing, instead of a UPS under every counter.
    Where we'd start
    16 kWh
    Entry system, at 10 kW
    A boutique or jewellery store's lighting, security and billing.
    30–80 kW
    Stackable, as the site grows
    A flagship or car showroom, air conditioning included.

    A starting point. We size every system from a survey of your site.

    Plan for your showroom

  5. A 40-Hour Print Shouldn't Fail at Hour 39.

    A print farm sells machine hours. One job can run for a day or two, layer on layer, and a cut of a fraction of a second can end it: the bed cools, the part lifts, the layers shift, and the material and the machine time are gone. Multiply that by a rack of printers and a customer's deadline.

    Running on the grid.

    GridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. FDM printer farm

      Normally: Rows of printers, each on a job hours long.

      In a power cut today: Every printer stops mid-layer. Few jobs resume cleanly.

      With Dridh: The layers keep coming. The job finishes.

    2. Resin printers

      Normally: Fine-detail parts, cured layer by layer.

      In a power cut today: The print stops mid-layer and is scrapped.

      With Dridh: Every layer cures on schedule.

    3. Industrial SLS & MJF

      Normally: Powder-bed builds in a heated chamber.

      In a power cut today: The chamber cools unevenly. The build and its powder are scrapped.

      With Dridh: Chamber heat and the build hold.

    4. Enclosures & room climate

      Normally: Steady heat for ABS, ASA and nylon.

      In a power cut today: Enclosures cool, and parts warp and crack.

      With Dridh: Temperatures hold. Parts stay true.

    5. Print server & network

      Normally: The job queue, cameras and remote monitoring.

      In a power cut today: The queue and cameras drop. Failures surface in the morning.

      With Dridh: The queue, cameras and alerts stay up.

    What fails today
    • Printers are among the least forgiving loads there are: a dip far shorter than a generator's start-up resets their controllers.
    • By the time a generator takes over, every print on the floor has already stopped.
    • Power-loss recovery in firmware is a gamble: the bed cools, the nozzle oozes, the part loses its grip.
    • A UPS per printer covers minutes, not a long cut, and each one is another battery to look after.
    How Dridh holds it
    • Switches in 5 ms. The printers' controllers don't notice the cut.
    • Hours of backup from one central battery sized to your farm, instead of minutes from a UPS per machine.
    • Clean, steady output for stepper drivers, heaters and controller boards.
    • Watched by our gateway: the battery's health, and every cut it carried you through.
    Where we'd start
    16 kWh
    Entry system, at 10 kW
    A farm of desktop FDM and resin printers.
    30–80 kW
    Stackable, as the site grows
    Industrial SLS or MJF machines, with their chambers and room climate.

    A starting point. We size every system from a survey of your site.

    Plan for your print farm

  6. Silver Doesn't Wait Halfway Through a Pour.

    Jewellery casting runs on schedules measured in hours and moments measured in seconds: a burnout kiln climbing through its program overnight, a melt held at temperature, a vacuum pulled the instant metal meets the flask. A power cut at the wrong moment doesn't pause any of it. It scraps it, and every re-melt costs metal.

    Running on the grid.

    GridGeneratorDridh batteryCleaned by the inverterFailsStarts overHolds

    1. Burnout kiln

      Normally: Burns the wax out of the flasks, on a program hours long.

      In a power cut today: The program stops partway. Flasks cool, crack, and the cycle starts again.

      With Dridh: The controller and the kiln hold the program.

    2. Induction melter

      Normally: Holds the silver molten, ready to pour.

      In a power cut today: Metal sets in the crucible. Re-melting it loses metal to oxidation.

      With Dridh: The melt holds at temperature, on larger systems.

    3. Vacuum casting machine

      Normally: Pulls the metal into every detail of the mould.

      In a power cut today: Vacuum lost mid-pour: porous, incomplete castings.

      With Dridh: The vacuum holds through the pour. Castings come out whole.

    4. Fume extraction

      Normally: Clears wax smoke and fumes from the workshop.

      In a power cut today: Extraction stops over the kiln and the melt. Fumes fill the room.

      With Dridh: The fans keep pulling. The air stays clear.

    5. Scales & CCTV

      Normally: Every gram weighed in and out, and on camera.

      In a power cut today: Balances reset mid-weighing. Cameras lose footage, in a room full of silver.

      With Dridh: Weights, records and footage carry on.

    What fails today
    • Programs, not just power: kilns, melters and casters run timed sequences, and a cut ends them partway.
    • A generator starts too late for a pour: by the time it takes over, the vacuum is gone and the metal has set.
    • Every scrapped casting is metal to re-melt, and every re-melt loses some of it.
    • Induction electronics don't take kindly to the sags and spikes of a weak supply.
    How Dridh holds it
    • Switches in 5 ms: kiln controllers, vacuum pumps and furnace electronics carry on through the cut.
    • Sized to the work: the controls, vacuum and extraction on an entry system; the kiln and the melt on a larger one.
    • Clean, steady output for induction electronics, with no stabiliser.
    • Watched by our gateway: every cut the battery carried, logged, and faults flagged before a casting day.
    Where we'd start
    16 kWh
    Entry system, at 10 kW
    A casting unit's controls, vacuum caster and extraction.
    30–80 kW
    Stackable, as the site grows
    The burnout kiln and the induction melter too.
    125 kW / 256 kWh
    High capacity, for larger sites
    A larger foundry floor.

    A starting point. We size every system from a survey of your site.

    Plan for your casting unit

The gap

Every Backup Has a Gap. Ours Is 5 ms.

Most businesses ride out power cuts on a diesel generator behind a changeover panel. When the grid drops, nothing carries the load until the generator has started and settled, and that gap is where screens go blank, machines reset, programs abort and castings fail. A Dridh system sits between the grid and the circuits that can't stop, and switches them to its battery in 5 milliseconds: a quarter of one cycle of the mains.

One Architecture, Sized to Your Site.

The same battery packs, battery brain and inverter as our home systems, proven in homes first and stacked up for business. Every system starts from a survey of what your site runs.

Entry system, at 10 kW
16 kWh
Stackable, as the site grows
30–80 kW
High capacity, for larger sites
125 kW / 256 kWh

Working with us

From Load Survey to Every Day After.

One team from your first call: the people who engineer your system install it and look after it.

  1. 01

    Load survey

    We walk your site with you, log what runs and when, and list what can't go down.

  2. 02

    Design

    We size the battery and inverter to your critical circuits, and plan how they work with your generator and any solar.

  3. 03

    Install

    Our own team installs and commissions the system, around your working hours.

  4. 04

    Stay connected

    Your system reports its health to us. If something drifts, we call you first.

Questions

Questions From Businesses.

Do we have to get rid of our generator?

No. Dridh systems work with your generator. The battery takes over the moment the grid drops, and the generator becomes your reserve for long outages instead of the first line.

How big a system can you build?

Our commercial range runs from a 16 kWh entry system at 10 kW, through a stackable architecture from 30 kW to 80 kW, up to 125 kW and 256 kWh for larger sites. We size every system from a survey of what your site runs.

Is it safe beside patients, guests or a kitchen?

Dridh batteries use lithium iron phosphate (LFP), the most stable mainstream lithium chemistry: sealed, with no acid and no fumes. Our inverter is IP65-rated and built to IEC 62109 (Parts 1 and 2) and IEC 61000 (Parts 6-1 and 6-3) safety and EMC standards, and our systems are MNRE compliant.

Can it run with solar panels?

Yes. Swayam, our solar-and-storage system, runs solar panels, a hybrid inverter and Dridh batteries as one system for homes and small establishments, and the same architecture scales up. Tell us about your roof or your panels on the call and we'll plan around them.

How is it monitored?

Every system reports to us through our own PMSG-MBY gateway, with real-time visibility and remote diagnostics, so problems are caught before they become outages.

Is it available now?

Our commercial systems are what come next: homes first, then business. Tell us about your site now and we'll plan it with you.

Power proven

Tell Us What Can't Go Down.

Tell us about your site: what it runs, what can't stop, and how often the power goes. Our business team will plan a Dridh system around it with you.

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What you'll get from the call

  1. 1

    You tell us about your site: what it runs, what can't stop, and how often the power goes.

  2. 2

    We show you what a Dridh system would hold, for how long, and what it would cost. You get it all as a written plan after the call.

  3. 3

    If it makes sense for you, we visit for a load survey, at a time that suits your work.

One call, at the time you choose. Engineered, installed and serviced by our own team in Bengaluru.

Talk to an engineer