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Greg Hopkins

  • Carbon-Free Buildings

Greg is a Manager within RMI’s Carbon-Free Buildings Program, leveraging a background in real estate finance to help strengthen the business case for clean energy and sustainability in the built environment. Since joining full-time in 2017, his work at RMI has primarily focused on finance and policy interventions to decarbonize buildings. He manages RMI’s Finance the Future initiative, working to climate-align housing finance and scale up new financing products for home performance improvements. He has also led various policy efforts at the city, state, and federal levels – including managing a cohort of 15+ cities nationwide to develop home energy labeling and disclosure policies, running a city accelerator on building performance standards, and developing comprehensive state and federal policy playbooks to decarbonize the buildings sector.


Before joining RMI, Greg developed well-rounded private sector experience in the commercial real estate industry while working in New York City. Most recently, he helped launch the U.S. real estate investing platform of Allianz, an international insurance and asset management company, where he was responsible for evaluating acquisitions of large office, retail, and multifamily properties. Prior to that, he worked in the debt financing and asset management departments of real estate private equity and development firm Tishman Speyer, collaborating closely with leasing, property management, and other in-house functions. His graduate studies focused on energy and environmental aspects of buildings, including sustainable design, energy simulation, and innovative financing solutions.


MS, Real Estate & the Built Environment, Harvard University Graduate School of Design

BA, Economics, Yale University


Boulder, CO

Authored Works
family viewing their new home

It’s Time to Climate-Align Housing Finance

What if you could finance green home improvements—such as efficient new windows, a heat pump, added insulation, solar PV, even resilience upgrades—as part of your mortgage when buying or refinancing your home? Not only would this offer conveniently timed capital from a trusted source (your lender), but at current interest…

aerial suburban houses

Build Back Better Homes

Single-family green mortgages can deliver significant benefits to low- and moderate-income households as well as investor-ready ESG impacts.


New Resources for Cities to Unlock Housing Improvements

As we all spend significantly more time inside our homes during COVID-19 shelter-in-place and stay-at-home orders, understanding how our homes perform (and the implications for affordability, comfort, and health) has arguably never been more important. And yet in most parts of the country, the status-quo is that residents…


Getting to Zero in Buildings: Insights from zLab

In October, 2019, Rocky Mountain Institute (RMI) and New Buildings Institute (NBI) organized an inaugural zLab to bring together industry leaders to brainstorm solutions and develop action plans around three topics: building electrification for decarbonization, advanced decarbonization policies for existing buildings, and unlocking new value through grid-interactive buildings. RMI has…


Defining the Future of the Built Environment

Today, buildings account for nearly 40 percent of greenhouse gas emissions. Thus, transforming the building stock is essential to ensure a decarbonized energy system and to keep global temperature rise below 2°C. That’s what nearly 600 leading policymakers, design professionals, building owners, and systems manufacturers were discussing at the Getting to…