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Our impact

Trusted by developers like CDL

Data-driven results from commercial deployments — with savings independently validated by auditors including Beca.

“Working with GRAM Tech has been a game-changer for City House. Their integration with our existing BMS allowed us to optimize HVAC operations with minimal but manageable disruptions to our tenants. GRAM’s expertise and innovative approach have not only enhanced our energy efficiency but also reinforced our commitment to sustainability, and the results speak for themselves.”
Lim Ke-Vin Head, Group Innovation · City Developments Limited
Deployment #1 · City House

City House — Smarter HVAC, Greater Savings

Building profile

23-storey office building in Singapore's CBD, owned by City Developments Limited (CDL). Awarded the Green Mark Platinum Super Low Energy Award by the Building and Construction Authority in 2024.

The challenge

Despite already being a high-performing green building, CDL challenged GRAM to further enhance City House's energy performance — specifically reducing HVAC energy consumption without disrupting tenant operations or comfort.

Our approach

GRAM Tech tapped into the building's existing BMS, leveraging CDL's robust data acquisition infrastructure — no additional IoT hardware. Full-building deployment completed in under 3 months. AI-powered optimisation ran continuously post-deployment.

Results

16% Reduction in chiller system electricity consumption
4% Improvement in overall chiller plant efficiency
<3 mo Full-building deployment timeline

Delivered with minimal disruption to tenants

Proof of Value · Beca audit

Green Mark Platinum Office Building

Building profile

Green Mark Platinum Business-One building, approximately 800,000 sq ft. A high-performing asset where further optimisation was the goal.

The challenge

Demonstrate that GRAM Tech could optimise HVAC performance while working seamlessly with existing systems — measurable energy savings without additional IoT devices or disruption to tenants.

Our approach

Structured Proof of Value deployment, independently audited by Beca to validate results with third-party credibility.

Results · Beca audited

19.6% Reduction in chiller system cooling load
18.1% Savings in chiller plant electricity consumption

Maintained operational comfort and system integrity throughout

“With the implementation of GRAM technology, we observed a clear and measurable reduction in the building's cooling load. What stood out to us was how seamlessly it worked with the existing systems — no additional devices were needed, and there was no disruption to tenants. The optimisation translated into tangible energy savings across both the water side and air side of the air conditioning system, which is a meaningful step forward in advancing building efficiency.”
Irene Yong Technical Director (Building Services) · Beca
Aggregate performance

Typical GRAM Tech outcomes

15–20%

HVAC energy savings

Across commercial building deployments

0

Additional sensors

Software-only deployment via existing BMS

~12 mo

Payback period

Subject to third-party cost structure

Could your building achieve similar results?

Start with a consultation. We'll assess your building profile and recommend a Proof of Value approach.

Request Building Assessment