Waltero leverages cutting-edge computer perception to analyze diverse assets, optimizing resource utilization and fostering global efficiency. We empower businesses and organizations to make data-driven decisions, minimizing waste and maximizing sustainability worldwide.
Hover a part of the network to see what Waltero measures there, click it for details and use cases. Every pin is a W-Sensor reading the meters, gauges, panels and tanks you already have.
Power
Heat
Cooling
W-Sensor point
Renewable generation
Small hydro, solar parks and wind sites
Generation
The sites with no SCADA, read on schedule.
Small hydro plants, solar parks and older wind sites are visited on a round because they have no SCADA, or because the portal belongs to the turbine or inverter supplier. Waltero reads the generation meter, the gauges and the levels at each site at a set interval, so the owner has an up-to-date production figure and a log of the site's condition without the drive.
What we monitor
Generation meterDaily and hourly kWh from the existing generation meter, read in place, independent of the supplier's portal.
Intake, forebay and trash-rack levelVision AI reads the water level against a calibrated scale on both sides of the trash rack; a growing difference means it is time to clean it.
Hydraulic and lubrication gaugesPressure and oil-level gauges on the turbine's hydraulic and lubrication units, read at a set interval with alarms on drift.
Turbine and generator behaviourRun events, run duration and trends from a vibration fingerprint on bearings and gearboxes, with an alert on deviation from the normal pattern.
Inverter and controller displaysThe figures shown on the inverter or plant controller display, read on every check.
Transformer gauges read every hour, not every quarter.
The main transformers and breakers already have gauges: oil level, winding and oil temperature, tap-changer counters, SF6 density on the breakers. Most are read by a technician on a scheduled visit and typed into a form. Waltero reads them in place at a set interval, outside the protection and control system, so condition is a trend rather than a quarterly snapshot.
What we monitor
Transformer oil level and temperatureVision AI reads the oil-level sight glass and the winding and oil temperature gauges; alarm on a rising trend or a falling level.
SF6 density gaugesThe density gauge on every breaker read at a set interval, so a slow leak is flagged long before the low-pressure lockout.
Tap-changer counterOperation counts from the existing counter, for maintenance planned on use rather than on the calendar.
Station auxiliariesBattery charger, panel meters and auxiliary supply figures from the existing displays, read on every check.
Indicator lamps and flagsA camera on the panel front flags a changed indicator or a dropped relay flag on the next check.
A distribution grid has hundreds or thousands of secondary substations and almost none of them report anything. Fitting an RTU to each is a project; fitting a W-Sensor is a visit. It reads the panel meters, the transformer gauges and the substation meter at a set interval, so load, condition and losses per substation are known without a rollout across the whole grid.
What we monitor
Load per substationCurrent, voltage and power from the panel meters in the LV board, read in place, for capacity planning and connection decisions.
Transformer temperature and oil levelThe gauges on the distribution transformer read at a set interval, with alarms before a summer peak becomes a failure.
Substation energy meterEnergy in against energy billed downstream, for loss calculation per substation.
Indicator lamps and trip flagsA tripped breaker or a changed indicator flagged on the next check.
Outage and anomaly alertsA reading that goes to zero, or a load that is not where it was yesterday, becomes an alarm in Mimir.
Electricity meters at customers, feeders and boundaries
Electricity grid
Smart-meter data from the meters you already have, with the power on.
A smart-meter rollout means a new meter, an electrician and a power cut at every customer, and years before the last one is done. A W-Sensor goes over the existing electricity meter in minutes, with the power on, and reads the register at a set interval. It has no electrical or data connection to the meter or the grid: it reads the display from the outside, so there is nothing to cut in and nothing to attack.
What we monitor
No power cut to installThe sensor mounts over the existing meter with a hinged adapter; the meter is never touched, the supply is never interrupted and no electrician is needed.
Air-gapped by designNo electrical or data connection to the meter, the customer's installation or the grid. Readings go out over the cellular network, encrypted and outbound only; nothing can be reached through the sensor, and interference with it is reported as tamper.
Consumption at the interval you chooseRegister readings from mechanical and digital meters at customers, feeders and grid boundaries, from every 15 minutes to once a day, for billing, load profiles and losses.
Anomalies and outagesA register that stops moving, a night baseline that changes or a load that vanishes becomes an alarm rather than a customer call.
Exact billing, no estimatesSame-day readings across a whole customer group end estimated bills and the disputes that follow.
A CHP or heat plant is full of instruments that are checked on a round: fuel tank levels, boiler and steam gauges, feedwater and dosing, a meter in a corner nobody trusts. The peak boiler plant at the edge of town sees a technician once a week. Waltero reads the same instruments at a set interval, so the plant log keeps itself and a drifting reading becomes an alarm rather than a note in the shift book.
What we monitor
Fuel and additive tank levelsVision AI reads the level gauges on oil, bio-oil and additive tanks; reorder alarms at the level you set, and a falling level with no load flags a leak.
Boiler, steam and feedwater gaugesPressure gauges on boilers, steam headers and feedwater lines read in place, with alarms when a reading leaves its normal band.
Temperature displaysFlue-gas, supply and return temperatures read from the existing thermometers and panel displays at a set interval.
Water treatment dosingDrum levels for oxygen scavenger, pH and inhibitor dosing, so the treatment log is always current.
Feed and circulation pumpsRun events, duration and trends from a vibration fingerprint on feedwater and network pumps, with an alert on deviation from the normal pattern.
Plant metersMake-up water, gas and the plant's own electricity from the existing meters, at the same interval as everything else.
Transmission lines, valve chambers and network pits
District heating & cooling
Pressure and temperature at every chamber, without driving there.
A district heating network is judged at points nobody sees: pressure at the far end, differential pressure at the critical points, temperatures in valve chambers, water in the pits. Waltero reads the existing gauges and thermometers in the chambers at a set interval and sends the readings to Mimir, so the network's condition is a trend across the map rather than a set of visits.
What we monitor
Pressure at critical pointsSupply and return pressure gauges at the ends of the network and at the critical points, read in place, with alarms on drift.
Supply and return temperatureThermometers in the chambers read at a set interval, so the temperature profile along the line is known.
Water in valve pitsVision AI reads the water level in chambers and pits against a calibrated scale, flagging groundwater ingress or a leak before the pit is full.
Network flow and heat metersThe reading shown on flow and heat meters out in the network, read on every check.
Records for the network modelTimestamped readings that calibrate the hydraulic model and support the annual loss report.
Every customer substation, meter and gauge on one screen
The city network
From manual rounds to continuous monitoring.
An energy company runs thousands of points nobody sees daily: customer heat substations in basements, secondary substations on street corners, gauges in valve chambers, tanks at the plant. Waltero puts a battery-powered W-Sensor on each of those points; it reads the existing meter, gauge or display at the interval you choose and sends every reading to Mimir, so the whole network is visible from one screen, and from the SCADA you already run. Anything a technician still drives to and writes down, a W-Sensor can read.
What we monitor
One view of the whole networkPlants, substations, chambers and customer sites in one view, with alarms to the on-call technician's phone.
Customer substations and metersHeat meters, return temperatures and electricity meters read in place at the customer, with no meter swap and no visit.
Feeds SCADA, billing and the work-order systemOpen API and MQTT into SCADA, the billing run and the maintenance system, so a reading out of band becomes a job.
Installed by your own crews or a partnerNo cabling, no outage: a sensor is fitted in minutes on the equipment already in place, from one plant to a whole network.
Know what is in the tank and what the station is doing.
Accumulator tanks and heat exchange stations sit between the plant and the customers, usually unmanned. The tank's level and temperatures, the station's primary and secondary pressures and the pumps' behaviour are checked on a visit. Waltero reads them at a set interval, so charging and discharging the tank and running the station are decisions made on data.
What we monitor
Accumulator level and pressureLevel and pressure gauges on the tank read in place, with alarms on both limits.
Tank and station temperaturesTemperature displays and thermometers at the tank's layers and on both sides of the exchange station, read at a set interval.
Primary and secondary pressurePressure gauges on each side of the exchangers, so fouling and a control fault show up as a drift.
Station pumpsRun events, duration and trends from a vibration fingerprint on the circulation pumps, with an alert on deviation from the normal pattern.
District cooling plants run hardest when nobody wants to be in them. Chiller gauges, tower dosing, cold-storage tank levels and the plant's electricity are checked on a round. Waltero reads the same instruments at a set interval, so kWh per unit of cooling is known and a fan or compressor that starts behaving differently is a planned job.
What we monitor
Chiller and plant electricitykWh per chiller and for the plant from the existing meters, at the interval you set.
Chiller and chilled-water gaugesRefrigerant and chilled-water pressure gauges read in place.
Cold storage tank levelLevel in chilled-water storage tanks read against the sight glass or a calibrated scale.
Cooling tower dosingBiocide and inhibitor drum levels plus make-up water, so the Legionella treatment log is always current.
Compressor and fan behaviourRun events, duration and trends from a vibration fingerprint on compressors and tower fans, with an alert on deviation from the normal pattern.
A W-Sensor mounts on the meter, gauge or display you already have, reads it at the interval you set, and sends the number to Mimir. Nothing on the asset changes, and nothing needs wiring.
W-Sensor
Hinged adapter, existing meterBattery powered
Last reading3.6 bartaken 14 min ago
Interval15 min1 h6 h24 h
Sprinkler riserBelow 4.0 bar
3.6 bar
Trend 30 dExcel · APIFeeds BMS
Mount
Fix a W-Sensor over the meter, gauge or display you already have. The adapter is hinged, so the meter stays readable and nothing on the asset is changed.
No plumbing. No wiring. No downtime.
Read
At the interval you set, the sensor photographs the dial or display and reads the value on the device itself. Only the reading is transmitted, never a video stream; the image behind it is kept for audit.
Hourly by default; from every 15 minutes to once a day.
See
Readings land in Mimir, up to date as of the last interval, with trends, alarm thresholds, exports and an API that can feed your BMS or energy reporting.
One screen for every meter and gauge on the network.
10+ years on a battery
Replaceable with two screws when the interval is short or the batteries age.
LTE-M / NB-IoT cellular
Wi-Fi where a site prefers it. On cellular the sensor never touches your OT or office network.
No gateway, no hub
Each sensor talks to Mimir directly. One device per reading point, nothing in between.
Paired in under 60 seconds
iOS or Android app: scan, name the point, set the interval. The first reading follows on the next tick.
Plants and remote sites, logged without the round.
CHP plants, peak boilers, small hydro and solar parks are checked on a round because the instruments are there and the SCADA is not. Waltero reads the same meters, gauges and levels at a set interval, so the plant log keeps itself and the remote site reports without the drive.
Power & heat plantRenewable generation Generation assets
Power & heat plant
The plant round, logged without the walk.
A CHP or heat plant is full of instruments that are checked on a round: fuel tank levels, boiler and steam gauges, feedwater and dosing, a meter in a corner nobody trusts. The peak boiler plant at the edge of town sees a technician once a week. Waltero reads the same instruments at a set interval, so the plant log keeps itself and a drifting reading becomes an alarm rather than a note in the shift book.
What we monitor
Fuel and additive tank levels
Vision AI reads the level gauges on oil, bio-oil and additive tanks; reorder alarms at the level you set, and a falling level with no load flags a leak.
Boiler, steam and feedwater gauges
Pressure gauges on boilers, steam headers and feedwater lines read in place, with alarms when a reading leaves its normal band.
Temperature displays
Flue-gas, supply and return temperatures read from the existing thermometers and panel displays at a set interval.
Water treatment dosing
Drum levels for oxygen scavenger, pH and inhibitor dosing, so the treatment log is always current.
Feed and circulation pumps
Run events, duration and trends from a vibration fingerprint on feedwater and network pumps, with an alert on deviation from the normal pattern.
Plant meters
Make-up water, gas and the plant's own electricity from the existing meters, at the same interval as everything else.
Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.
0manual readings a year
0hours of driving, walking and writing
0working days a year
Show the checklist
Fuel and additive tank levels Power & heat plant Daily 5 min
Boiler, steam and feedwater gauges Power & heat plant Weekly 10 min
Temperature displays Power & heat plant Daily 5 min
Water treatment dosing Power & heat plant Weekly 5 min
Plant meters Power & heat plant Monthly 15 min
Generation meter Renewable generation Monthly 10 min
Intake, forebay and trash-rack level Renewable generation Daily 5 min
Hydraulic and lubrication gauges Renewable generation Weekly 10 min
Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.
Meters and substations that report, without a rollout.
Customer meters are read by hand or replaced in a rollout; transformer gauges, SF6 density, panel meters and indicator lamps are read on scheduled visits and typed into a form. Waltero reads all of them in place at a set interval, with the power on and with no connection to the meter, the substation or the grid, so consumption, condition and load are a trend rather than a quarterly snapshot.
Customer & grid meters
Smart-meter data from the meters you already have, with the power on.
A smart-meter rollout means a new meter, an electrician and a power cut at every customer, and years before the last one is done. A W-Sensor goes over the existing electricity meter in minutes, with the power on, and reads the register at a set interval. It has no electrical or data connection to the meter or the grid: it reads the display from the outside, so there is nothing to cut in and nothing to attack.
What we monitor
No power cut to install
The sensor mounts over the existing meter with a hinged adapter; the meter is never touched, the supply is never interrupted and no electrician is needed.
Air-gapped by design
No electrical or data connection to the meter, the customer's installation or the grid. Readings go out over the cellular network, encrypted and outbound only; nothing can be reached through the sensor, and interference with it is reported as tamper.
Consumption at the interval you choose
Register readings from mechanical and digital meters at customers, feeders and grid boundaries, from every 15 minutes to once a day, for billing, load profiles and losses.
Anomalies and outages
A register that stops moving, a night baseline that changes or a load that vanishes becomes an alarm rather than a customer call.
Exact billing, no estimates
Same-day readings across a whole customer group end estimated bills and the disputes that follow.
Transformer gauges read every hour, not every quarter.
The main transformers and breakers already have gauges: oil level, winding and oil temperature, tap-changer counters, SF6 density on the breakers. Most are read by a technician on a scheduled visit and typed into a form. Waltero reads them in place at a set interval, outside the protection and control system, so condition is a trend rather than a quarterly snapshot.
What we monitor
Transformer oil level and temperature
Vision AI reads the oil-level sight glass and the winding and oil temperature gauges; alarm on a rising trend or a falling level.
SF6 density gauges
The density gauge on every breaker read at a set interval, so a slow leak is flagged long before the low-pressure lockout.
Tap-changer counter
Operation counts from the existing counter, for maintenance planned on use rather than on the calendar.
Station auxiliaries
Battery charger, panel meters and auxiliary supply figures from the existing displays, read on every check.
Indicator lamps and flags
A camera on the panel front flags a changed indicator or a dropped relay flag on the next check.
A distribution grid has hundreds or thousands of secondary substations and almost none of them report anything. Fitting an RTU to each is a project; fitting a W-Sensor is a visit. It reads the panel meters, the transformer gauges and the substation meter at a set interval, so load, condition and losses per substation are known without a rollout across the whole grid.
What we monitor
Load per substation
Current, voltage and power from the panel meters in the LV board, read in place, for capacity planning and connection decisions.
Transformer temperature and oil level
The gauges on the distribution transformer read at a set interval, with alarms before a summer peak becomes a failure.
Substation energy meter
Energy in against energy billed downstream, for loss calculation per substation.
Indicator lamps and trip flags
A tripped breaker or a changed indicator flagged on the next check.
Outage and anomaly alerts
A reading that goes to zero, or a load that is not where it was yesterday, becomes an alarm in Mimir.
Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.
0manual readings a year
0hours of driving, walking and writing
0working days a year
Show the checklist
No power cut to install Customer & grid meters — Daily — 15 min
Consumption at the interval you choose Customer & grid meters — Monthly — 10 min
Transformer oil level and temperature Transmission substation — Weekly — 10 min
SF6 density gauges Transmission substation — Weekly — 10 min
Tap-changer counter Transmission substation — Monthly — 15 min
Indicator lamps and flags Transmission substation — Daily — 5 min
Load per substation Distribution substations — Monthly — 15 min
Transformer temperature and oil level Distribution substations — Daily — 5 min
Substation energy meter Distribution substations — Monthly — 10 min
Indicator lamps and trip flags Distribution substations — Daily — 5 min
Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.
Pressure and temperature in the chambers, level and temperature in the accumulator, gauges at the exchange stations and in the cooling plant: the numbers a heat network is run on are collected by visit. Waltero reads the existing instruments at a set interval, so the whole network is one trend in Mimir, alongside the customer substations.
Pressure and temperature at every chamber, without driving there.
A district heating network is judged at points nobody sees: pressure at the far end, differential pressure at the critical points, temperatures in valve chambers, water in the pits. Waltero reads the existing gauges and thermometers in the chambers at a set interval and sends the readings to Mimir, so the network's condition is a trend across the map rather than a set of visits.
What we monitor
Pressure at critical points
Supply and return pressure gauges at the ends of the network and at the critical points, read in place, with alarms on drift.
Supply and return temperature
Thermometers in the chambers read at a set interval, so the temperature profile along the line is known.
Water in valve pits
Vision AI reads the water level in chambers and pits against a calibrated scale, flagging groundwater ingress or a leak before the pit is full.
Network flow and heat meters
The reading shown on flow and heat meters out in the network, read on every check.
Records for the network model
Timestamped readings that calibrate the hydraulic model and support the annual loss report.
Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.
0manual readings a year
0hours of driving, walking and writing
0working days a year
Show the checklist
Pressure at critical pointsHeat transmission & network Weekly, 10 min
Supply and return temperatureHeat transmission & network Daily, 5 min
Water in valve pitsHeat transmission & network Daily, 5 min
Network flow and heat metersHeat transmission & network Weekly, 5 min
Accumulator level and pressureHeat storage & exchange stations Daily, 5 min
Tank and station temperaturesHeat storage & exchange stations Daily, 5 min
Primary and secondary pressureHeat storage & exchange stations Weekly, 10 min
Chiller and plant electricityDistrict cooling Monthly, 10 min
Chiller and chilled-water gaugesDistrict cooling Weekly, 10 min
Cold storage tank levelDistrict cooling Daily, 5 min
Cooling tower dosingDistrict cooling Weekly, 5 min
Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.
What the operations, OT and IT teams ask before a first installation, in one place. Everything here applies to every reading point on the network, from the accumulator tank to the secondary substation.
What it reads
Mechanical and digital meters, pressure and temperature gauges, level indicators, display panels and status lamps. Anything a person can read, the camera can.
How it reads
A photo of the instrument at each interval, read on the device by Waltero's edge AI. Only the value is transmitted, never a video stream; the image behind any reading is available for audit.
Reading interval
Configurable per sensor in Mimir, from every 15 minutes to once a day. Hourly is the usual default for plant instruments and substation gauges.
Mounting
Hinged adapter over the existing instrument. No plumbing, wiring or modification of the asset; the meter stays readable by hand.
Power
Battery powered, 10+ years at typical intervals. Batteries are replaced by removing two screws.
Environment
Sealed housing engineered for plant rooms, valve chambers, substations and outdoor cabinets.
Tamper detection
The sensor reports if it is moved or opened.
The sensor
Network
LTE-M, NB-IoT or LTE cellular with a SIM in every sensor; Wi-Fi where a site prefers it. Coverage is checked per site before installation.
OT and IT
None required on cellular. The sensor never joins your SCADA, OT or office network and needs no port, VLAN or firewall rule; it reads the instrument from the outside.
Gateways
None. Each sensor communicates with Mimir directly; there is no hub, repeater or on-site server.
Below ground and indoors
LTE-M and NB-IoT are designed for deep-indoor coverage. A connection survey per site confirms it before sensors go up.
Connectivity
Connections
Outbound only and encrypted. The sensor calls out to Mimir; nothing can call in to it.
Audit images
The image behind any reading is available on request, so a disputed value can be checked by eye.
Attack surface
No inbound ports and, on cellular, no presence on your OT or office network, so a sensor cannot be used as a way in.
Ownership
Your readings are yours: export any range as CSV, or pull them through the API.
Security & data
Readings
Every point on one screen, up to date as of the last interval, with the thumbnail behind each value.
Alarms
Thresholds and rate-of-change rules per point, with notifications to the people you choose.
Reporting
Readings per point, per site and per period; consumption per customer meter; exports to Excel for loss, tariff and ESG reporting.
Integration
REST API and webhooks; readings can be pushed to SCADA, the billing system, a historian or a data warehouse; MQTT is available.
Access
Web application on desktop and mobile; an organisation per utility, with users and roles per plant, network or team.
Bring your inspection round list. That is all we need.
Every energy company already has the answer written down: the list of gauges, meters, levels and panels technicians drive to and read today. One conversation about that list tells us exactly which readings we can take over for you. The checklists above are a good place to start.
