Retrofit and Limited Renovation

The Retrofit and Limited Renovation cases study resources are divided in several categories. First, project case study briefs highlighting real world energy and water conservation project undertaken by developers and managers through equipment retrofit and light renovation. In addition Technology + Topic Briefs, focuses on technology and a roundup of research and recommendations of specific retrofit measures including examples. The Multifamily Buildings Energy Profiles provide information on average and quartile building consumption by end use drawn from the Minnesota EnergyScoreCards Pilot project. These pages also contain general recommendations based on recent research.

Project Briefs
Single Family - Townhouse

Cherry Street Homes
First Homes Green Rehabs
MinnePHit House

Project Briefs

Cherry Ridge Apartments
Orness Plaza
Ripley Gardens Apartments
Viking Terrace

NRDC Case Studies
NRDC Case Studies

Concordia Arms
Elliot Apartments
Sienna Green

Technology and Topic Briefs
Technology & Topic Briefs

Water Efficiency - Fixtures
Insulation - Attics
Energy Impact of Underground Garages
Common Area LED Lighting Upgrade
Boiler Optimization
Centralized Ventilation

20160219 BuildingEnergyProfileOOOOELD
Multifamily Buildings Energy Profiles

Master Metered - Family and Singles
Master Metered - Elderly and Disabled
Sub-metered Owner Paid Heat and DHW - Family and Singles
Sub-metered Owner Paid Heat and DHW - Elderly and Disabled
Sub-metered Owner Paid DHW Only - Family and Singles

This study characterizes energy use in Minnesota's multifamily sector. The study evaluates the payback period of 25 common energy- and water-saving measures, including lighting upgrades, installation of high-efficiency space and water heating systems, installation of water saving showerheads and faucet aerators, upgrading to ENERGY STAR appliances and installing new windows, among others.

This literature review is an overview of energy retrofit issues in Minnesota multifamily housing. It includes:

  • a framework for addressing the target market (primarily developers and their properties);
  • discussion of programs designed to measure and incentivize energy efficiency;
  • discussion of policy changes.

This document is intended to be used at the beginning of a rehab project of any size during the building walk-through and energy audit phases. "The objective of this document is to provide a comprehensive tool for nonprofit developers of affordable housing and their consultants to assist them in greening their rehabilitation projects."

An analysis of two retrofit programs, HUD's Green Retrofit Program (applied primarily to post-1970 multifamily buildings ranging from 40 to 100 units) and the Energy Savers joint program offered by an energy utility and the CIC of Illinois (applied to pre-WWII multifamily buildings ranging from 12 to 48 units), using pre- and post-retrofit data. The report's primary focus is on the effectiveness of the programs, with some useful conclusions about payback period and savings-to-investment ratio.