Your Office Building
Decarbonization Solution

Start decarbonizing your portfolio, improve ESG scores, and increase asset value with our machine-learning sustainability intelligence platform.

Trusted By Industry Leaders:

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Decarbonization Without Disruption

Our machine-learning platform provides the fastest, easiest, and most cost-effective path to begin decarbonizing your office buildings. Empower your building operators with real-time recommendations to optimize the operations of existing equipment, resulting in a reduction of carbon emissions and asset-specific operating expenses — without needing to invest in expensive equipment or other major capital expenditures.

Learn how Cortex can help you reach your goals with a custom decarbonization plan for your portfolio today.

Decarbonize Your Portfolio Faster

Make faster and more significant strides towards the decarbonization of your portfolio with our solution that pays for itself in less than six months.

Save 11% in Annualized Energy Usage

Our clients save an average of 11% in annualized energy usage by using Cortex — without the need to invest in costly new equipment.

Improve Your GRESB Scores

Make meaningful improvements to GRESB and other ESG scores by decarbonizing your portfolio with our data-driven technology.

Making Decarbonization a Smart Business Decision

“The sustainability and economic benefits are shockingly large.”

– Nick Bienstock, Managing Partner of Savanna

Savanna, a series of real estate investment funds with millions of square feet

Savanna, a series of real estate investment funds with millions of square feet throughout New York City, turned to Cortex with the goal of quickly decarbonizing their portfolio to improve GRESB scores, meet the expectations of their investors, increase asset value, and fulfill the requirements of Local Law 97.

After piloting our decarbonization platform in one building, Managing Partner Nick Bienstock quickly recognized that the “sustainability and economic benefits are shockingly large.” Achieving 100% payback in just three months, he also reported that they increased the asset value of the first building Cortex was deployed at by $5M by saving $250K in operating expenses. 

To date, Savanna has rolled Cortex out across their portfolio, resulting in dramatic improvements to their GRESB scores, a 21% in portfolio-wide annualized energy savings, and over $1.4M in lifetime financial savings.

Learn how we can help you achieve the same through a free custom decarbonization plan for your portfolio.

Get a Custom Decarbonization Plan For Your Portfolio

Our platform allows your buildings to reduce carbon emissions and avoid major regulatory fines without having to upgrade equipment or invest capital into a hardware-based sustainability plan. Cortex does the heavy lifting for you in helping you reach both your ESG and your economic goals, so you can focus on what matters most to you.

Learn more through a free custom decarbonization plan developed for your portfolio today.


Metric Tons of CO2e

Reduced per Year


Payback In Less Than

6 Months


Square Feet Covered

Across North America


Retention From Our Clients

Reduce Carbon Emissions and Improve ESG Scores Across Your Portfolio

Commercial buildings are responsible for 28% of all carbon emissions — which is even more than the auto industry. Regulators and CRE investors are responding with penalties and investment strategies that could result in millions of dollars in fines and lost investments. This is why Cortex has developed our machine-learning decarbonization platform — the fastest, easiest, and most cost-effective path to make massive strides towards the decarbonization of your portfolio, all while improving your GRESB scores and increasing your asset value.

Your First Steps to Decarbonizing Your Office Buildings

From data processed by your BMS to hyper-local weather insight and more, we use thousands of data points your buildings are already collecting to optimize your operations, leading to a significant reduction of carbon emissions and operating costs. When you work with our machine-learning platform, you’ll also eliminate the need to invest in new equipment to reach your ESG goals and increase your asset value. Find out how we can help you reach your goals through a free custom plan for your portfolio today.

Our Cortex Community

More than 95% of Cortex clients believe in our mission and have successfully made massive strides towards the decarbonization of their portfolios – and they renew their subscription year after year.

The Cortex installation and customer success teams did a flawless job getting the system up and running in one of the most demanding environments in the industry. Early results are both positive and promising.

Paul Rode

Head of US Engineering at Tishman Speyer

Not only have we found Cortex to be extremely cost effective, but its environmental and sustainability benefits are also shockingly large. Having Cortex in place at our properties certainly gives us a valuable jump start as far as the steps we need to take to meet the new emissions requirements in New York.

Nick Bienstock


Cortex is poised to change the game for commercial building operators and the climate industry in general. I could not be more proud or excited to be supporting the Cortex team in that journey.

Dan Malven

4490 Ventures Managing Director

Building Analytics capabilities like Cortex are a powerful complement to broader sustainability strategies. The software provides immediate efficiency gains by helping engineers more precisely manage existing equipment and provides actionable insights that are very easy for building engineers to implement, resulting in measurable savings.

Dana Robins Schneider

a Senior Vice President at Empire State Realty Trust

Frequently Asked Questions

How Soon Do I Start Seeing Payback on My Investment in Cortex?

Because we use your existing equipment and data, you should start seeing results as soon as the system is set up, usually within three- to six- months. Most customers report that their savings are twice their fees in year one, and five times their fees by year three.

Do We Need to Purchase Additional Sensors or Replace Any of Our Existing HVAC Equipment?

No, there are no required upgrades to your equipment required and need to invest in any additional sensors to use Cortex. We have spent nearly a decade building a platform that learns the intricacies of your existing equipment in order to empower your engineers with the insight and recommendations they need to get the most out of the equipment you already have. This means no disrupting operations, and no huge capital investments for new equipment, hardware, or sensors required. The first step to saving energy and operation costs starts with optimizing the systems you already have in place, rather than investing in expensive, new systems.

How Can Cortex Help Me Ensure Tenant Comfort?

Your building systems provide thousands of data points that are unused. Our platform gives your building operations access to that data, and makes real-time recommendations to keep floors the right temperature for tenants while reducing the amount of energy needed to maintain that temperature. If there is a problem with one of your sensors, Cortex can help your engineers identify the problem before tenants complain.

Do you track GRESB score improvements?

While GRESB is not something incorporated directly into the Cortex platform at this time, we pride ourselves on the personalized experience our dedicated customer success team provides our customers. If your success is dependent upon tracking certain metrics or working within specific reporting, we’ll work with you closely to develop a plan custom to the results you need to show. Either way, we’ve got you covered.

What Reports Are Provided by Cortex?

Cortex provides automated usage, cost, and energy savings reports to users each month, as well as executive summary reports to visualize your savings over time. These reports are accessible in the Cortex dashboard anytime, and your dedicated customer success team will schedule time at your convenience to review results with you personally on a regular basis.

Why Cortex?

Our platform is your first step and most important step to decarbonization. It is the fastest, easiest, and most cost-effective method to reach your ESG goals in comparison to traditional capital expenditures. Cortex will provide you with the opportunity to reduce carbon emissions and operating costs while increasing NOI and asset value, without compromising the tenant experience or disrupting your current operations.

Ready to learn more about Cortex? Let's chat.

From optimizing operations to making better decisions across your portfolio, Cortex helps you take action to achieve your decarbonization goals - today, tomorrow, and in 2030. Set up time with one of our experts to talk.