Customer-Centric Approach to Scaling IDSM Retrofits
Retrofitting Multifamily Properties for Sustainable and Persistence Savings
The project completed in June 2021 and a final report is pending publication. The key outcomes of the project include achieving deep decarbonization in 140 homes through comprehensive rehabilitation through energy efficiency and electrification measures. The team also identified significant barriers to the electrification of existing buildings such as electrical panel limitations. To solve this, the team evaluated the first-of-its-kind implementation of emerging technologies such as a 120V space conditioning heat pump for electrification, achieved triple net benefits of 40% GHG reduction, tenant and owner bill reduction with indoor health benefits, and developed financing scenarios with tax credit refinance and programmatic coordination to scale deep retrofits in affordable housing.
This project developed and demonstrated an approach to scale residential retrofits for disadvantaged communities that will focus on customer-centric solutions. This project develops and demonstrates an innovative approach, focusing on energy efficient integrated demand side management (IDSM) retrofit packages that are non-intrusive or do not displace occupants for long periods of time. To achieve full electrification, the team demonstrated a 120V heat pump for space conditioning and a CO2 refrigerant heat pump for water heating. The measures showed a greenhouse gas reduction of 40%.
The 120V heat pump solution reduces the cost of electrical panel upgrade which can cost up to $10,000 per unit.
This project has reduced greenhouse gas emissions by 40% due to the reduction or elimination of natural gas use for space heating, water heating, and cooking.
The 120V heat pump for space conditioning provides an inexpensive solution that is small and does not require an outdoor unit or upgraded electrical panel
The retrofits demonstrated in this project were in low-income disadvantaged communities. The success of further adoption of these technologies will benefit more communities like these through comfroability and costs.