
π Environment, Climate & Water Β· State Machine
The stages of a rooftop solar project for a home, from enquiry and site survey through subsidy approval, installation and net-metering.
Drawing diagramβ¦
State machine for a rooftop solar project: Enquiry, SiteSurvey, Quoted, Booked with advance, SubsidyApplied on the national portal, Installed, NetMeterApplied with the electricity distribution company, Commissioned when the net meter is installed and inspected, SubsidyReceived. Cancelled if the customer drops out before booking, Rejected if the survey finds the roof unsuitable.
stateDiagram-v2 [*] --> Enquiry Enquiry --> SiteSurvey SiteSurvey --> Rejected: Roof unsuitable SiteSurvey --> Quoted Quoted --> Cancelled: Customer drops out Quoted --> Booked: Advance paid Booked --> SubsidyApplied: National portal application SubsidyApplied --> Installed: Panels and inverter fitted Installed --> NetMeterApplied: Discom application NetMeterApplied --> Commissioned: Inspection and net meter Commissioned --> SubsidyReceived: Subsidy credited SubsidyReceived --> [*] Rejected --> [*] Cancelled --> [*]
A platform that calculates a company's greenhouse gas emissions from energy bills, fuel use, travel and suppliers, and produces reports for disclosures like BRSR.
Where a manufacturing company's yearly emissions come from, in tonnes of CO2 equivalent, split into Scope 1, 2 and 3 and their main sources.
How a city measures and publishes air quality: reference stations and low-cost sensors, calibration, AQI calculation and public alerts.
A city water network with sensors and smart meters: treatment plant, reservoirs, pumping stations, district metered areas and a SCADA control centre.
How a water utility finds and fixes leaks: night flow analysis per district, acoustic surveys to pinpoint the leak, repair and verification.
How a recycling app works: a household books a pickup, the collector weighs and pays for the waste, and the recycler reports what was processed.