# Pharmaceuticals

> The Pharmaceuticals playbook is jouleWise's typical engineering approach for pharma and API plants: heating and cooling at the same time.

Canonical: https://joulewise.com/industries/pharmaceuticals  
Publisher: jouleWise Advisory Services Pvt Ltd, Noida, India · Spain  
Reviewed: 2026-10-08  
Status: company page

## In short

One provider for green electricity, green heat and the data that proves both — from reactor jackets to cleanroom HVAC to the cold chain. For an API, formulation or CDMO site, the carbon in the product is now part of the commercial conversation. Six pressures point at the same metered data. Much pharma heat is warm, not hot: jacket loops, dryer air, HVAC reheat, washing and purified-water sanitisation sit below 120 °C. Heat pumps serve those loads on electricity — and the chilled-water plant next door becomes their heat source.
## Heating and cooling at the same time.

- **The situation.** A pharma site runs round the clock: cleanroom HVAC, chilled water for reactors, purified-water loops and steam for jackets, dryers and sanitisation. Much of that heat comes from boilers for loads well below 120 °C, while chillers next door reject heat to cooling towers. Global customers increasingly ask API and formulation suppliers for renewable share, Scope 1 and 2 data and reduction targets.
- **The gap.** Electricity, heat and ESG reporting are bought from different vendors on different clocks. Solar is sized without the heat load; boilers are replaced without a plan for low-cost electricity; ESG data is typed in once a year. Each fix leaves money and carbon on the table.
- **What we do.** jouleWise runs the whole decarbonisation stack: <b>green electricity</b> — intrastate and ISTS solar and wind, rooftop solar, BESS and green-market purchase, each source orchestrated to fulfil industrial demand at least cost; <b>ABT metering and data loggers</b> on every source and load; <b>green heat</b> from industrial heat pumps up to 120 °C; <b>ergOS</b> to meter and orchestrate both every 15 minutes; <b>esgOS</b> to turn the same data into audit-ready disclosure.
- **Why it compounds.** Low-cost green electricity lowers the cost of every unit of heat a heat pump makes. Thermal storage lets that heat be made in the cheapest solar blocks. ergOS proves it; esgOS reports it. Savings from one layer fund the next.
- **The value.** Up to 25% lower electricity cost on DISCOM tariff and up to 65% renewable share (reported, year 1 of ergOS). Heat pumps on the chilled-water return then deliver heating and cooling from the same kWh — displacing boiler fuel on jacket loops, HVAC reheat and water systems.
- **How to engage.** Four models, mix and match: <b>Advisory</b>, <b>SaaS</b> (ergOS + esgOS), <b>Heat Advisory</b>, and <b>Heat as a Service</b>, where you pay per unit of heat and invest nothing upfront.
- **First step.** A four-week decarbonisation baseline on one site: electricity bills, load survey, fuel and steam records, and portable heat metering on jacket loops, HVAC reheat and water systems — ending in one business case for electricity, heat and ESG.

## Why now: Your buyers are auditing your utilities.

For an API, formulation or CDMO site, the carbon in the product is now part of the commercial conversation. Six pressures point at the same metered data.

- **Global customer programmes.** Multinational pharma buyers run supplier sustainability programmes that ask API and CDMO partners for renewable electricity, Scope 1 and 2 data and targets.
- **Regulated export markets.** Health systems in Europe increasingly weigh supplier carbon in procurement — NHS England, for example, asks suppliers for carbon reduction plans.
- **Utility cost.** Round-the-clock HVAC, chilled water, purified water and steam make utilities one of the largest controllable costs on a GMP site.
- **Steam for low-temperature work.** Coal, briquette, FO or PNG boilers often serve loads below 120 °C. That Scope 1 can be removed through change control on the utility, not the validated process.
- **Disclosure.** BRSR Core-format reporting and value-chain disclosure put your energy and emissions in your customers' reports as well as your own.
- **Carbon markets.** India's Carbon Credit Trading Scheme sets emission-intensity targets sector by sector. Sites that measure now are ready when their sector or supply chain is covered.

## The intervention map: Every utility has a lever.

Starting materials arrive, reactors run, dryers and cleanrooms hold spec, water loops stay hot, packs leave in the cold chain. jouleWise acts at ten points — in the electricity supply and the utility block, never inside the validated process.

1. **Green sourcing** (power, Electricity). Intrastate and ISTS solar and wind contracted through open access for a flat, round-the-clock load.
2. **Connectivity and metering** (power, Electricity). Open access approvals, connection agreement and ABT metering at the site incomer.
3. **Rooftop solar** (power, Electricity). Warehouse and admin roofs carry behind-the-meter solar, sized from measured load.
4. **Battery storage** (power, Electricity). LFP storage for peak shaving and ride-through on critical HVAC and water systems.
5. **Heat pumps on jacket and water loops** (heat, Heat). Hot water for reactor jackets and utility loops made by heat pumps instead of boiler steam.
6. **Cleanroom HVAC reheat** (heat, Heat). AHU reheat and dehumidification coils fed from the heat pump hot-water circuit.
7. **Hot-water store and PW loop** (heat, Heat). Thermal store charged in solar blocks; purified-water loop held at sanitisation temperature.
8. **Chiller heat recovery** (heat, Heat). Heat that cooling towers throw away becomes the heat pump source — cooling and heating from one kWh.
9. **ergOS control** (data, Data · ergOS). 15-minute metering of electricity, heat, chilled water, fuel and water; forecasting, trading and heat dispatch.
10. **Suppliers and customers** (esg, ESG · esgOS). Starting-material and solvent data for Scope 3; customer questionnaires and per-batch carbon from esgOS.

Illustrative plant. Actual intervention map built site by site in the baseline.

## Green electricity: Low-cost green electricity.

Cleanroom HVAC, chillers and water systems run 24×7, so the load is high and flat. That suits round-the-clock wind and storage — and heat pump load can still be concentrated into solar hours with a hot-water store.

- **Plan.** Meter-data due diligence: bills, load survey, rooftop and captive parameters. Solar, wind, hybrid, BESS and exchange electricity optimised together, capex or opex, with each state's ToD, banking and open access charges in the landed-cost model. Outcome: RE-100 roadmap · size, location, savings, NPV
- **Implement.** RfP over a 25-year horizon, developer evaluation, reverse auction, PPA and shareholder agreements (26% SPV equity for captive status), open access approvals and connection agreement. Outcome: Green electricity contracted · ~3 months once planning closes
- **Meter and log.** ABT meters at injection and drawal points — main and check meters on CTs and PTs of the required accuracy class — plus data loggers on every incomer, heat pump, steam, fuel and water line. Installed, tested, sealed and linked to the SLDC and to ergOS. Outcome: Every source and load visible in 15-minute blocks
- **Orchestrate.** ergOS forecasts 96 blocks, schedules with the SLDC, trades DAM, GDAM, RTM and GTAM, manages banking and battery health — and now dispatches heat pumps and thermal storage against price. Outcome: For the life of the assets

## Heat: The boiler, reinvented.

Much pharma heat is warm, not hot: jacket loops, dryer air, HVAC reheat, washing and purified-water sanitisation sit below 120 °C. Heat pumps serve those loads on electricity — and the chilled-water plant next door becomes their heat source.

| Duty | Temperature | Heat pump? |
|---|---|---|
| Reactor jacket heating (hot-water loop) | 60–95 °C | yes |
| Solvent distillation and recovery (most common solvents) | 60–110 °C | yes |
| Fluid-bed and tray dryers (process air heating) | 50–90 °C | yes |
| Cleanroom HVAC reheat (dehumidify, then reheat) | 25–45 °C | yes |
| Purified-water sanitisation (hot storage and loop) | 65–85 °C | yes |
| CIP and washing (vessels, bins, garments) | 60–85 °C | yes |
| Autoclaves and clean steam (remain on existing steam) | 121–134 °C | stays on fuel |
| WFI multi-effect distillation (remains on existing steam) | 140–180 °C | stays on fuel |

- **Heat sources we reuse.** Chiller condensers and cooling-tower return, HVAC exhaust air, solvent-recovery condensers and warm effluent — heat the site already rejects.
- **Heating and cooling at once.** Pharma sites cool and heat at once: chilled water for reactors and cleanrooms, reheat and hot loops alongside. A heat pump on the chilled-water return serves both from the same kWh.
- **Sized from metered heat.** Portable heat meters log flow and temperature on candidate processes for two to four weeks before anything is sized.

## Economics: Low-cost electricity drives low-cost heat.

What one kWh of useful process heat costs, and what it emits, depending on where the heat comes from. The heat pump cuts cost on any electricity; green electricity is what cuts the carbon.

| Route | ₹ per kWh of useful heat | kg CO₂ per kWh-th |
|---|---|---|
| PNG-fired boiler (₹55/SCM · 85% efficiency) | 6.22 | 0.221 |
| Diesel (HSD) boiler (₹90/L · 85% efficiency) | 10.59 | 0.315 |
| Heat pump on DISCOM electricity (₹8.5/kWh · COP 3.2) | 2.66 | 0.224 |
| Heat pump on green open access (₹5.5/kWh landed · COP 3.2) | 1.72 | 0.000 |
| Heat pump in solar blocks + store (₹4.0/kWh · COP 3.2) | 1.25 | 0.000 |

Illustrative only, not an offer. Assumptions: PNG 10.4 kWh/SCM, 1.95 kg CO₂/SCM; HSD 10.0 kWh/L, 2.68 kg CO₂/L; grid 0.716 kg CO₂/kWh (CEA baseline order of magnitude); green electricity treated as zero-emission on a market basis with green attributes retired. Heat pump COP 3.2 reflects hot water near 80 °C for jacket and water loops, drawn from the chilled-water return (heating side only; the cooling delivered is extra); COP falls as delivery temperature rises. Tariffs, fuel prices and COP vary by site and are replaced with metered values in the baseline.

## Roadmap: Baseline. Electricity. Heat. Proof.

1. **Baseline** (Weeks 1–4). Bills, load survey, fuel and steam records, portable heat metering on candidate processes, ESG data map. Outcome: Signed-off energy, heat and carbon baseline
2. **Roadmap** (Weeks 4–8). RE-100 electricity plan, heat pump shortlist for jacket loops, HVAC reheat and water systems, and the ESG data map — in one business case. Outcome: One business case — electricity, heat, ESG
3. **Meter and log** (Weeks 6–12). ABT metering at the incomer and data loggers on electricity, heat, fuel and water lines — the measured base every later step is sized, settled and reported on. Outcome: ergOS live on metered data
4. **Electricity live** (~3 months after roadmap). Open access contracted and approved; rooftop solar and BESS where they fit; every source orchestrated against demand on ergOS. Outcome: Green electricity flowing
5. **Heat live** (Pilot, then scale). One heat pump on the chilled-water return serving HVAC reheat and a hot-water loop, under change control; then jacket loops and dryers. Outcome: Fuel displaced, measured on ergOS
6. **Operate and disclose** (Every block · every year). ergOS runs electricity and heat; esgOS publishes BRSR Core-format, CBAM, CDP and customer disclosures with an audit trail. Outcome: Assurance-ready numbers

Timelines indicative; confirmed after the baseline and dependent on state approvals and equipment lead times.

## 24-hour dispatch

Cleanroom HVAC never stops, so the base is nearly flat. The heat pumps carry purified-water heating, sanitisation and HVAC reheat all day, with batch peaks in the morning and afternoon campaigns.
## Facts

- Heat duties and temperatures: Reactor jacket heating 60–95 °C (heat pump); Solvent distillation and recovery 60–110 °C (heat pump); Fluid-bed and tray dryers 50–90 °C (heat pump); Cleanroom HVAC reheat 25–45 °C (heat pump); Purified-water sanitisation 65–85 °C (heat pump); CIP and washing 60–85 °C (heat pump); Autoclaves and clean steam 121–134 °C (stays on fuel); WFI multi-effect distillation 140–180 °C (stays on fuel).
- PNG-fired boiler: ₹6.22 per kWh of useful heat, 0.221 kg CO₂/kWh-th
- Diesel (HSD) boiler: ₹10.59 per kWh of useful heat, 0.315 kg CO₂/kWh-th
- Heat pump on DISCOM electricity: ₹2.66 per kWh of useful heat, 0.224 kg CO₂/kWh-th
- Heat pump on green open access: ₹1.72 per kWh of useful heat, 0.000 kg CO₂/kWh-th
- Heat pump in solar blocks + store: ₹1.25 per kWh of useful heat, 0.000 kg CO₂/kWh-th
- Plant areas with a lever: Reactor jacket loops, Cleanroom HVAC reheat, Purified-water loops, Solvent recovery, Cold chain.

## Assumptions and limits

- Illustrative only, not an offer. Assumptions: PNG 10.4 kWh/SCM, 1.95 kg CO₂/SCM; HSD 10.0 kWh/L, 2.68 kg CO₂/L; grid 0.716 kg CO₂/kWh (CEA baseline order of magnitude); green electricity treated as zero-emission on a market basis with green attributes retired. Heat pump COP 3.2 reflects hot water near 80 °C for jacket and water loops, drawn from the chilled-water return (heating side only; the cooling delivered is extra); COP falls as delivery temperature rises. Tariffs, fuel prices and COP vary by site and are replaced with metered values in the baseline.
- Timelines indicative; confirmed after the baseline and dependent on state approvals and equipment lead times.

## Questions and answers

**Does it replace my boiler?**  
For loads up to 120 °C, yes — as the primary heat source. The boiler usually stays on standby and for any loads above that range.

**What if electricity is expensive?**  
Each kWh of electricity returns three to four kWh of heat, so heat costs roughly a third of the electricity price. On green open access, the carbon falls close to zero as well.

**What does the site need?**  
Spare electrical capacity, space near the heat users and a steady heat demand. A hot-water store smooths peaks and lets the unit run in the cheapest blocks.

**Is it proven?**  
It is the same refrigeration cycle as the chillers already on your site, run for heat. Industrial units are in service worldwide in food, chemicals, pharma and textiles.

## Related

- [The Pharmaceuticals sector deck](https://joulewise.com/downloads/joulewise-pharma.html)
- [Heat Pump Studio](https://joulewise.com/studios/heat-pump)
- [Discuss your plant](https://joulewise.com/contact)

---
jouleWise · https://joulewise.com/ · sales@joulewise.com · +91 84483 22771