Building Owner

What’s eligible for C-PACE?

With C-PACE, all sorts of energy improvement measures are possible – from energy efficiency measures that reduce the amount of energy a building uses, to clean energy solutions that produce renewable energy. As long as the lifetime savings from a project are greater than the total investment, it can qualify for C-PACE financing. Energy improvements like solar, HVAC, fuel switching and more are within reach, thanks to C-PACE.

C-PACE projects must meet the following requirements: 

  • An energy audit or feasibility study must be completed.
  • Upgrades must lower the energy consumption of the building or enable the building to produce clean energy.
  • Upgrades must be “permanently affixed” to the property; with the exception of district heating and cooling systems and microgrids. The measures proposed for the project must be permanently fixed to the property (i.e. the C-PACE improvements cannot be removed from the property in the event of a change of ownership), or associated with a district heating or cooling system or microgrids.
  • The term of the C-PACE assessment must not exceed the weighted average expected useful life (EUL) of the measures. EUL is determined through the energy audit and approved by a qualified Technical Advisor as well as the Connecticut Green Bank. Regardless of a project’s EUL, the term of the C-PACE assessment may not exceed 25 years unless approved in writing by CT Green Bank.
  • All energy measures together must meet a Savings to Investment Ratio (SIR) of greater than 1, meaning that projected lifetime savings from the energy measures must exceed the total investment, inclusive of financing costs over the full term of the C-PACE assessment, over the useful life of the measures. A complete technical review of the proposed C-PACE project will be undertaken by the Green Bank’s Technical Advisor, or a advisory approved by the Green Bank in its sole discretion, to confirm the accuracy of the estimated projected savings and the computation of this SIR.
  • All C-PACE transactions require the approval of the Green Bank, as the statewide administrator of the C-PACE Program. 


Eligible energy upgrades

This list of energy efficiency and renewable energy technologies is a reference tool for the types of projects C-PACE is used to finance. If an upgrade is not included on this list, Connecticut Green Bank will review proposed additions on a case-by-case basis.

Non-energy-saving measures directly related to installation of an energy conservation measure may be determined as eligible and included in the financing as long as the project’s SIR remains greater than 1 and if the measure will benefit the qualifying commercial real property (e.g. a roof to support solar panels or the pipeline infrastructure as necessary to enable a natural gas conversion).

Renewable Energy Measures

  • Solar power
  • Solar thermal
  • Wind Power
  • Geothermal energy
  • Fuel Cell
  • Methane Gas from landfills
  • Low emission advanced renewable energy conversion technologies
  • Projects that seek to deploy electric, electric hybrid, natural gas or alternative fuel vehicles and associated infrastructure and any related storage, distribution, manufacturing technologies or facilities
  • Sustainable Biomass Facility

Energy Efficiency Measures

  • High efficiency lighting
  • Heating, ventilation and air conditioning (HVAC) upgrades
  • New automated building and HVAC controls
  • Variable speed drives (VSDs) on motors fans and pumps
  • High efficiency chillers
  • High efficiency boilers and furnaces
  • High efficiency hot water heating systems
  • Combustion and burner upgrades
  • Fuel switching
  • Water conservation measures to the extent they save energy
  • Heat recovery and steam traps
  • Building enclosure/envelope improvements
  • Building automation (energy management) systems
  • Renewable energy systems (e.g., solar, fuel cells, geothermal)
  • Combined heat and power systems (CHP)
  • District thermal
  • Microgrids

The following end use savings technologies are generally more applicable to industrial facilities:

  • New automated process controls
  • Heat recovery from process air and water
  • Cogeneration used for peak shaving
  • Process equipment upgrades
  • Process changes 

Ineligible energy upgrades

All C-PACE related improvements must be permanently affixed to the commercial property and part of a retrofit to existing infrastructure, with the exception of district heating and cooling systems. The following items will not be considered as efficiency measures under the C-PACE program:

  • Appliances, e.g., refrigerators, dishwashers, etc.
  • Plug load devices
  • Vending machine controls
  • Any package of measures that does not achieve an energy savings to investment ration (SIR) greater than 1
  • Any measure that is easily removed or not permanently installed
  • Any measure that does not result in improved energy efficiency or renewable energy generation