Shared ground-loop cooling and hot water plant for new housing societies
TL;DR Geoloop designs, builds and runs one central cooling plant for a new housing society in place of hundreds of split ACs. Heat goes into a ground loop or into the society's hot water. The developer pays for the plant, residents pay per unit of cooling used, and Geoloop earns an operating fee.
India's cooling demand is set to grow about eightfold between 2017-18 and 2037-38, and about elevenfold in buildings, according to the India Cooling Action Plan[1]. Most of that will be room ACs, which already make up about 80% of installed cooling capacity[1]. A 2025 roadmap from the Bureau of Energy Efficiency says room ACs added around 50–60 GW to the evening peak in 2024[2].
In my opinion a tower full of split units is the most expensive way there is to cool a building. Each flat sizes for its own worst afternoon, outdoor units bake on the facade, and every compressor starts at the same time on a hot evening. A shared plant needs about 15% less capacity for the same load, but upfront cost, design skills and business models have held it back[1].
Geoloop builds one plant per society - efficient chillers, a chilled-water storage tank and pipes to fan-coil units in each flat, with a heat meter at every door. So what's different from a standard central plant? Two choices. Where soil and open space allow, condenser heat goes into a borefield under the podium or parking instead of evaporating water in cooling towers. Some of that heat also feeds the society's hot water, so the ground does not keep warming.
The seed pitched shared geothermal for heating and cooling, which I'd reframe. Most Indian cities barely need heating and a ground loop that only absorbs heat slowly loses efficiency. A three-year field study of a cooling-dominated system held the soil temperature rise to about 0.45 °C by sending surplus heat to 50 °C hot water[3]. Geoloop uses the ground loop only where a thermal survey supports it.
Two parties pay here. The developer pays for the plant in place of individual ACs and sells "cooling included" flats. Residents then pay a tariff for what they use. India's best-documented example, a large housing project in Hyderabad, charges ₹1,200 per TR of connected load a year plus ₹14.91 per TR-hour[4]. Geoloop would take a design-build fee and then a monthly operating fee from the residents' association.
BEE published District Cooling Guidelines in 2023 and a national roadmap in 2025, so lenders and developers have a reference design and tariff template[4][2]. Time-of-day electricity tariffs reach all non-farm consumers from April 2025, and that rewards chilling water at cheap hours and storing it[5]. MNRE also introduced a National Policy on Geothermal Energy in September 2025[6].
There is no public figure for shared cooling in Indian housing. The roadmap puts district-cooling potential in 220 IT and ITeS SEZs alone at about 2.3 million TR by 2037-38[2], and BEE cites an EESL estimate of ₹1,350 Cr of investment for 300 new plants[4]. Both are adjacent and mostly commercial. Residential evidence is thin - one documented society with 390 homes, running since 2015[4].
That Hyderabad project's residents' association owns and runs its central plant, with phase-change thermal storage for power cuts[4]. GIFT City runs India's flagship district cooling network, planned at 180,000 TR[4]. One Gulf district cooling operator runs 92 plants, one of them in India[7]. As far as I could find, none of them offers a ground-loop shared plant to housing developers.
| Difficulty | Hard (65/100) |
| Starting capital | ₹2.7–5.6 Cr |
| Time to launch | 18–30 months |
Your timeline is the developer's construction schedule, so the first plant takes two years or more. The engineering is specialised too. Borefield sizing needs thermal-response tests and residential loads swing wildly between a July afternoon and a January night. Running it well is harder than building it, and billing hundreds of households fairly is no easy task.
There's no single licence for shared cooling, but building codes, refrigerant rules and power tariffs all shape the design.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't let AI settle a billing dispute or override safety limits on the plant. Meter data and a human operator decide those.
Want to work out the AI layer for Geoloop? Talk to Yash →
I like this for an HVAC engineer or ESCO founder with a developer relationship and patience for long projects. If you want a quick software business then it is a poor fit. Before you raise money, sign one developer for a feasibility study and prove on paper, with a thermal test, that the plant beats split ACs on 15-year cost per flat.
Plan for roughly ₹2.7–5.6 Cr before the first plant earns, and expect the developer's construction schedule to set your timeline.
No single licence. You follow BEE's district cooling guidelines and building codes, choose lower-GWP refrigerants, and confirm your power tariff category with the DISCOM.
Yes, especially in hot cities with dense new housing. Check local building codes, refrigerant rules and drilling permits first.
The free Geoloop validation kit has the line-by-line capital breakdown, the effort scoring, the cooling-tariff and building-code checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for developers and residents, and 5 assumptions to test. Download the kit →
Thinking about building Geoloop or something close to it? The make-or-break bit is getting a developer to fund the plant and then running it efficiently at low summer-night loads, and that's the kind of thing I help founders with. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.