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Community microgrids

Power the community can count on, and see.

Remote communities often run on diesel or on a weak grid that fails for days. A community microgrid of solar, batteries and backup generation can supply homes, the clinic, the school, water pumps and the network. Monitoring every part lets local operators keep it running and show what it delivers.

Plan a deploymentHow it worksStation Builder
Industry
Communities
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Sources cited
5
  1. Communities · Community microgrids

    Off the grid, or on a weak one

    Remote communities often pay dearly for diesel or live with a grid that fails for days. A community microgrid of solar, batteries and backup generation can keep homes, the clinic, the school, water pumps and the network running, if local operators can see every part and act before it fails.

  2. What is measured

    Sun, battery, fuel and load

    Meters read solar generation, generator output and supply to every feeder and service, an irradiance sensor measures the sun the array receives, the battery management system reports charge, health and temperature, and the generator reports run hours, starts and fuel in its tank.

    Instruments
    Power meters · Irradiance · Battery management · Generator controller
  3. The base node

    Tomorrow, forecast

    The node forecasts tomorrow’s solar and load, advises the controller when the generator must run, warns when heat or deep discharge stresses the batteries, and computes the energy access each household and service receives, so the community can show what the plant delivers.

  4. Radio and links

    Data out by cellular or satellite

    Where coverage exists, cellular carries plant data and remote support. Communities beyond coverage use satellite, often shared with their community network. The monitoring runs from the battery bank with its own reserve, so it reports even after a shutdown and tells remote support what happened.

    Links
    Public cellular · Satellite
  5. How it works

    From a cloudy forecast to a generator

    The node forecasts three cloudy days and a full clinic. It advises a short generator run the next afternoon to keep the batteries above their limit through the night. The local operator approves it, fuel use is recorded, and the clinic never loses power.

  6. From order to operation · Order

    Scope the loads and the plan

    The scope reads the community’s homes, services and productive uses, present power and fuel costs, growth plans and who will own and run the system. Nexus Observatory Inc. returns the plant design, monitoring, training, an energy access baseline and a price for building and for each year.

    Plan a deployment
  7. From order to operation · Survey

    Survey the land and the loads

    Crews survey with the community: land for the array and battery room, shading and flood marks, the generator and fuel store, distribution routes, critical loads such as the clinic and water pumps, and backhaul coverage. Findings are recorded with photographs.

  8. From order to operation · Permits

    Land, licences and agreements

    Land use is agreed with the community, generation and distribution are licensed or exempted under national rules, and the ownership, tariff and maintenance agreement is signed. Fuel storage follows fire safety rules. Every agreement is kept with the site record.

  9. From order to operation · Build

    Build and test the plant

    Inverters, batteries, the controller, meters and the monitoring gateway are configured and tested together, with protection settings checked and battery safety systems proven. Nodes are enrolled with their identities and local operators join the bench work. Test results travel with the kit to the site.

    Open the Station Builder
  10. From order to operation · Install

    Install the plant

    Crews and local workers set the array foundations and frames, install the battery room and generator, connect the controller and distribution, fit meters at homes and services, and install the gateway and backhaul. Every part is photographed and recorded. The site record is updated before the crew leaves.

  11. From order to operation · Commission

    Commission and island

    Each node proves its identity. The plant is tested in every mode: solar and battery alone, with the generator, through a planned outage and back. Meters are checked against references, and the energy access baseline is measured for every household and service.

  12. From order to operation · Operate

    Run it locally

    Local operators see generation, battery health, fuel and supply to every service. The generator runs only when forecasts need it, critical loads keep priority, and every outage is recorded. Funders receive energy access and performance reports from the same record.

  13. From order to operation · Maintain

    Keep the batteries healthy

    Panels are cleaned, battery health is tracked and cells replaced before failure, the generator is serviced on run hours, and software updates arrive remotely in rings. Local operators carry out most work, with remote support for the rest. Spares and procedures travel with the crews.

    Book field services
  14. Data products

    For households, operators and funders

    Households, the clinic, the school and water services receive supply and outage records; local operators receive plant health and forecasts; the governing body receives fuel use and savings; funders and governments receive energy access tiers, each tied to the plant and the period.

    See the data products
  15. Evidence

    Access you can show

    The plant follows the international specifications for rural renewable and hybrid systems, the controller the microgrid controller standard, solar monitoring the photovoltaic performance series and batteries the storage safety standard. Energy access is reported on the multi-tier framework from metered records.

    Drawn against
    IEC TS 62257 · IEEE 2030.7 · IEC 61724-1 · IEC 62933-5-2 · Beyond Connections: Energy Access Redefined (Multi-Tier Framework)
  16. What you get

    Microgrids and off-grid site power

    PV, storage and generator sizing for instruments and edge sites, with telemetry and remote control. Delivered as hardware + software and managed service, for remote sites, telecom, agencies, communities. Scale: Per site; fleets. Service levels are written as numbers you can measure on your own dashboard.

    Talk to sales
  17. Next step

    Plan community microgrids with us

    Tell us the site, the measurements and the rules it answers to. We reply with a survey proposal, a design and a scope for community microgrids. An engineer replies with a survey proposal and a scope, and the plan grows from one site to the network you need, at your pace.

    Plan a deploymentOpen the Station BuilderOpen the Studio

01The place and its hazards

Where it runs, and what can go wrong.

Operating contextRural electrification with renewable and hybrid systems has its own international technical specifications, microgrid controllers are specified by an IEEE standard, photovoltaic performance is monitored to the international series and battery storage follows safety standards. Energy access itself is measured with a multi-tier framework that counts hours, capacity, reliability and affordability.

Hazards

  • Diesel that is costly, polluting and late to arrive
  • Batteries degraded by heat and deep discharge
  • Outages that close the clinic and stop the water pumps
  • Loads growing beyond what the system was built for
  • No local skills to diagnose faults

02What must be measured

What, where, how often, and under which rules.

Each measurement names where it is taken, how often, and the public standard or regulation behind it. Numbers in the sources column open the cited source below.

MeasurementWhereCadenceSources
Solar generation and irradianceArray and a reference sensor at the plantEvery minute1
Battery state of charge, health and temperatureBattery management systemContinuous2
Generator run hours and fuelBackup generator and its tankContinuous, events on start3
Supply to homes and servicesFeeders and service metersEvery few minutes4
Controller dispatch and islandingThe microgrid controllerOn every change5

03The observation stack

From one base unit to a network.

The same blocks at every scale: instruments and a base node, a site with its radio, a fleet run as one, and a network federated on the open protocol.

  1. 01

    Base unit

    A plant point: meters, irradiance, battery and generator data on an industrial gateway with a node.

    Build a station →
  2. 02

    Site

    A site: the solar array, battery room, generator, controller and the distribution to homes and services.

    Plan a site →
  3. 03

    Fleet

    Several community microgrids run with one view for operators and remote support, each owned locally.

    Managed offers →
  4. 04

    Network

    Communities, funders and utilities share energy access and performance records through open standards.

    The open protocol →
  • 01Energy and power-quality meter
  • 02Compact weather station
  • 03Generator
  • 04OT gateway (OPC UA, Modbus)
  • 05Edge node (Wedge)
  • 06Cellular modem/router
  • 07LEO flat-panel terminal
  • 08Solar array
  • 09Battery case

Radio and links

Public cellular

Where coverage exists, cellular carries plant data and remote support.

Radio and links

Satellite

Communities beyond coverage use satellite, often shared with the community network.

Edge computeThe node forecasts solar and load for the next day, advises the controller when to run the generator, warns when batteries are stressed by heat or deep discharge, and computes the energy access tiers each household and service receives.

PowerThe plant powers itself; monitoring runs from the battery bank with its own small reserve so faults are reported even after a shutdown.

04How it works

From the instrument to the product.

One observation’s path, tier by tier, with the interface on every link and a bill of materials below; then how the one node grows to a site, a fleet and federated networks.

Community microgrids: data path

– of 07

01 Instruments Measurement with sensor identity andcalibration 02 Gateway 03 Node – Wrap in an observation envelope with timequality– Measure quality and uncertainty, attachquality flags– Buffer locally (store-and-forward when thelink drops) 04 Backhaul Commit with transactional outbox andpublish, delivered at least once 05 Site Consumer inbox deduplicates and applieseach record once into governed data 06 Data store Governed product through API, map orexport, correction-aware 07 Products IEC 61850ModbusOGC SensorThings API 08 Power and structure Supplies 12 V DC, 24 V DC, 48 V DC to thefield equipment 01 Energy and power-quality meter SDI-12 · RS-485 · Ethernet 02 Compact weather station SDI-12 · RS-485 · Ethernet 03 Generator RS-485 · Ethernet Battery management system Not in the reference kit 04 OT gateway (OPC UA, Modbus) Ethernet · RS-485 · CAN · AnalogueI/O 05 Edge node (Wedge) Ethernet · Fibre · USB · RS-485 ·BMC 06 Cellular modem/router Ethernet · USB · RS-232 07 LEO flat-panel terminal Ethernet Site MQTT 5 with Sparkplug B Governed data store Versioned, correction-aware Supply and outage records Plant health and forecasts Fuel use and savings Energy access tiers 08 Solar array RS-485 09 Battery case USB RS-485 · Modbus RS-485 · Modbus RS-485 · Modbus CAN Ethernet · opc-ua Ethernet Ethernet LTE/NR Satellite IP
From the instrument to the published product: each band is a tier, each connector names its interface, and the numbers match the bill of materials. Hover or focus a block to trace its path; scroll or step to follow one observation.
Bill of materials
ItemEquipmentData portsProtocolsPower in
01Energy and power-quality meterMeter for voltage, current, power, energy and power quality at a site or on a feeder.SDI-12RS-485EthernetModbus, IEC 61850 (MMS, GOOSE), DNP3 (IEEE 1815), MQTT 512 V DC
02Compact weather stationAll-in-one or compact station for temperature, humidity, pressure, wind and rain at a site.SDI-12RS-485EthernetSDI-12, Modbus, MQTT 5, OGC SensorThings API12 V DC
03GeneratorFuel generator with automatic start for backup or primary site power.RS-485EthernetModbusFuel
04OT gateway (OPC UA, Modbus)Read-only bridge from industrial fieldbuses and controllers (Modbus, OPC UA, DNP3, IEC 61850, CAN) to the site network, behind a security boundary.EthernetRS-485CANAnalogue I/OOPC UA, Modbus, DNP3 (IEEE 1815), IEC 61850 (MMS, GOOSE), MQTT 524 V DC
05Edge node (Wedge)Rugged edge node that boots from signed media, attests itself and establishes a site cell from little or no infrastructure.EthernetFibreUSBRS-485BMCMQTT 5, DMTF Redfish, IEEE 1588 PTP, NTP with NTS, OPC UA12 V DC, 24 V DC, 48 V DC, AC mains
06Cellular modem/routerLTE or NR modem or router that uses a public carrier or private network as backhaul.EthernetUSBRS-2323GPP E-UTRA air interface, 3GPP NR air interface, OMA LwM2M12 V DC, PoE
07LEO flat-panel terminalElectronically steered flat-panel user terminal for low-Earth-orbit broadband constellations.Ethernet—PoE, 48 V DC, AC mains
08Solar arrayPV modules with charge controller sized to the site’s load and climate.RS-485Modbus—
09Battery casePortable battery pack with DC outputs for field kits.USBModbusAC mains, HV DC, USB PD

How it scales

01 Instruments Arbitrary qualified sensors and instruments whosemeasurements are ingested with calibration, units,geometry, time, custody and uncertainty. ×n 02 Node The minimum useful deployable unit: server, ruggedappliance, radio node, sensor gateway, satelliteterminal, AI, scientific, vehicle or virtual node. Node Node agent 03 Site The minimum independently operable localgovernance and failure domain: one or more nodesplus local network, identity, policy, evidence,storage, products and operator surfaces.

SITE

Node Node Node ×n 04 Cluster An optional scale or specialisation domain forscheduling, shared storage, accelerators or datalocality.

CLUSTER

×n 05 Fleet Coordinates plans, acknowledgements,convergence evidence, update campaigns andcorrection propagation across nodes and sites.

FLEET

Fleet controller ×n 06 Federation An exchange of products, capabilities, events orwork across approved, independently administeredtrust domains, using explicit trust, policy,data-locality, version and correction contracts.

TRUST DOMAIN

TRUST DOMAIN

TRUST DOMAIN

×n Verifier Applications Data in the field Telemetry Control Data upstream Control Data upstream Control Exchange Evidence Events Exchange
The smallest deployable unit is one node; the same unit is replicated to meet the demand. Nodes form a site, sites may form a cluster, sites and clusters are coordinated as a fleet, and fleets exchange across independently administered trust domains. Each plane is a separate channel with its own open binding.
Data in the field
MQTT 5 with Sparkplug B; connectors for LoRaWAN, OPC UA and instrument buses.
Telemetry
OpenTelemetry OTLP.
Control
TLS 1.3 with mutual authentication; protobuf messages over gRPC or HTTP/2.
Data upstream
At-least-once publication with repeat-safe keys over the control channel or NATS JetStream; QUIC MAY be used on lossy links.
Evidence
DSSE-signed in-toto statements; SLSA provenance; SCITT transparency receipts.
Events
Event envelopes mapped to CloudEvents 1.0; channels described in AsyncAPI 3.
Exchange
OpenAPI 3.1; the OGC API family; SensorThings; STAC; WIS 2.0.

05From order to operation

Every step, from the first call to a running site.

The same crew and the same record carry the work from scope to maintenance.

  1. 01 Order

    Scope the loads and the plan

    The scope reads the community’s homes, services and productive uses, present power and fuel costs, growth plans and who will own and run the system. Nexus Observatory Inc. returns the plant design, monitoring, training, an energy access baseline and a price for building and for each year. 4

  2. 02 Survey

    Survey the land and the loads

    Crews survey with the community: land for the array and battery room, shading and flood marks, the generator and fuel store, distribution routes, critical loads such as the clinic and water pumps, and backhaul coverage. Findings are recorded with photographs. 3

  3. 03 Permits

    Land, licences and agreements

    Land use is agreed with the community, generation and distribution are licensed or exempted under national rules, and the ownership, tariff and maintenance agreement is signed. Fuel storage follows fire safety rules. Every agreement is kept with the site record.

  4. 04 Build

    Build and test the plant

    Inverters, batteries, the controller, meters and the monitoring gateway are configured and tested together, with protection settings checked and battery safety systems proven. Nodes are enrolled with their identities and local operators join the bench work. Test results travel with the kit to the site. 2

  5. 05 Install

    Install the plant

    Crews and local workers set the array foundations and frames, install the battery room and generator, connect the controller and distribution, fit meters at homes and services, and install the gateway and backhaul. Every part is photographed and recorded. The site record is updated before the crew leaves.

  6. 06 Commission

    Commission and island

    Each node proves its identity. The plant is tested in every mode: solar and battery alone, with the generator, through a planned outage and back. Meters are checked against references, and the energy access baseline is measured for every household and service. 51

  7. 07 Operate

    Run it locally

    Local operators see generation, battery health, fuel and supply to every service. The generator runs only when forecasts need it, critical loads keep priority, and every outage is recorded. Funders receive energy access and performance reports from the same record. 4

  8. 08 Maintain

    Keep the batteries healthy

    Panels are cleaned, battery health is tracked and cells replaced before failure, the generator is serviced on run hours, and software updates arrive remotely in rings. Local operators carry out most work, with remote support for the rest. Spares and procedures travel with the crews. 2

06Data products and integration

What it delivers, to whom, and into which systems.

Data products

  • Supply and outage recordsHouseholds, the clinic, the school and water services
  • Plant health and forecastsLocal operators
  • Fuel use and savingsThe community’s governing body
  • Energy access tiersFunders and governments

Integration

  • Microgrid controllerAdvice and alarms reach the controller through its own interfaces.
  • BillingMeter readings feed the community’s tariff and billing.
  • FundersPerformance and access reports are exported for funders.

Exchanged through IEC 61850, Modbus, OGC SensorThings API.

07Questions buyers ask

Before you scope it.

Can our own people run it?

Yes. Training and remote support are part of the programme.

How much diesel will it save?

The design estimates it; monitoring reports what was actually saved.

What happens when batteries age?

Health is tracked so cells are replaced before they fail.

Can it grow?

Yes. Arrays and batteries can be added as loads grow.

08Resources

The sources behind this page.

Public standards, regulations and guidance, cited where they apply. Each applies only where its jurisdiction or scope does.

  1. 1IEC 61724-1: Photovoltaic system performance, monitoringInternational Electrotechnical Commission
  2. 2IEC 62933-5-2: Electrical energy storage systems, safety requirements for electrochemical based systemsInternational Electrotechnical Commission
  3. 3IEC TS 62257: Renewable energy and hybrid systems for rural electrificationInternational Electrotechnical Commission
  4. 4Beyond Connections: Energy Access Redefined (Multi-Tier Framework)Energy Sector Management Assistance Program, World Bank · 2015
  5. 5IEEE 2030.7: Standard for the Specification of Microgrid ControllersIEEE Standards Association

09Related

Use cases and solutions.

Use case

Remote microgrid observatory

Solar, storage and power-quality telemetry with a weather station and a small cell, for a community that is reducing diesel.The full use case →
Solution

Microgrids and off-grid site power

PV, storage and generator sizing for instruments and edge sites, with telemetry and remote control.Solutions for communities →
Solution

Operator and technician training on delivered systems

Hands-on courses for customer staff on the systems they run; no public credentials are issued by the group.Solutions for communities →
Solution

Sensing as a Service

Observation networks designed, installed, operated and maintained for a monthly fee: weather, hydromet, air, seismic and environmental stations, with data delivered under a licence.Solutions for communities →

10Communities: specialized fields

Other fields of this industry.

Specialized field

Community cellular and broadband

Cellular and Wi-Fi networks a community owns and runs, on shared or community spectrum, with solar power and satellite or microwave backhaul where carriers do not build.The full field →
Specialized field

Small community water systems

Water quality, chlorine, tank levels and pumps in small community supplies, watched continuously so operators keep water safe and fix faults before taps run dry.The full field →
Specialized field

Community early warning

Rain and river gauges, local alerts and sirens that a community runs itself, linked to the national warning service so warnings reach every household in time.The full field →

Bring us the site.

Plan a deployment, configure a station, model it in the Studio or talk to sales. The form names who receives your details.

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