Hybrid industrial steam, engineered around the site

Steam performance, not boiler ownership.

Heating as a Service (HaaS) combines electric steam generation, fuel-backed resilience, water systems and SCADA / EMS controls around measured process demand.

Clear boundary: a hybrid system is not fully CO₂-free while fuel backup remains in use. Metering, dispatch records and agreed assumptions are needed to evaluate the outcome.
The service model

A practical route from plant data to delivered steam

The system is configured around the site’s load profile, electrical boundary and continuity requirements—not a universal equipment package.

01 / PERFORMANCE

Delivery is measurable

Steam, utilities and operating states are metered against a defined baseline and an agreed performance boundary.

02 / RELIABILITY

Hybrid by design

Electric generation can address a stable demand band while backup capacity supports peaks, standby duty and process continuity.

03 / COMMERCIAL

Capital structure follows fit

Suitable projects may be evaluated for BOOT-style delivery or an investor-backed SPV with clear responsibilities and metering.

Interactive system

Follow energy, water and steam through the plant

Every highlighted item has a keyboard-accessible counterpart below the diagram, so the explanation does not depend on pointer hover or the desktop layout.

Integrated hybrid industrial steam system showing solar PV, grid supply, batteries, electric and backup boilers, water treatment, controls, steam distribution and process users

Hover to locate a component; click or use Tab and Enter / Space for details.Tap a component in the diagram or choose it from the list below.

  • Electrical
  • Steam
  • Water
  • Controls
  • Backup
  • Process
Illustrative architecture only. Final equipment selection, sizing, protection, pressure, water chemistry and operating sequence require site-specific engineering.

All 15 system components

How it works

Operating logic in four linked decisions

Electrify what is predictable, retain a defined reserve, coordinate the plant, and verify what was delivered.

Establish the demand profile

Use operating hours, steam flow, pressure and production data to separate stable demand from peaks and contingencies.

Size the electric duty

Select an electric steam duty that respects the site connection, tariff, available generation and actual process constraints.

Preserve continuity

Define backup capacity, fuel system and dispatch logic for peaks, outages, standby duty and process-critical events.

Meter and review

Use SCADA / EMS data to make steam delivery, energy inputs, alarms and the emissions boundary visible.

Application and delivery fit

Where a HaaS assessment is worth doing

A strong case needs both a technically workable operating boundary and a commercial structure that allocates risk clearly.

Technical fit

Stable demand with real continuity needs

  • A repeatable base steam demand can be separated from peaks.
  • The site is considering phased electrification or modernisation of an HFO boiler arrangement.
  • Electrical capacity, tie-in boundaries and shutdown windows can be assessed.
  • Economisers, controls and condensate recovery can be reviewed as part of the whole system.
Commercial fit

Measured service instead of a simple asset sale

  • The customer wants to evaluate reduced fossil-fuel dependence without assuming full upfront CAPEX.
  • BOOT-style delivery or an investor-backed SPV can be considered.
  • Metering, operating responsibility, availability boundaries and performance reporting can be contractually defined.
  • Project economics can be tested against actual utility and fuel data.
Emissions boundary

Hybrid does not mean zero-carbon

Fuel used by the backup boiler remains part of the operating boundary. Any decarbonisation assessment must state the electricity source, backup dispatch, fuel factors, make-up water, condensate return and measurement period. No outcome should be inferred from the equipment diagram alone.

Hydrogen limitation

A future option, assessed case by case

Hydrogen compatibility depends on burner and boiler design, materials, controls, ventilation, detection, safety studies, fuel quality, storage or supply infrastructure and economics. It is not treated here as an available or guaranteed fuel pathway.

First-step assessment

Start with the plant data that defines the boundary

A first review needs the steam demand profile and operating hours, current boilers and backup philosophy, fuel use, electrical capacity, tie-in constraints, shutdown windows, reliability requirements, and preferably 12 months of utility and fuel records.

System role
Relationship to HaaS