CPACE Renewable Systems 3 — Questions and Answers
Question 1: A PACE-financed commercial building installs a 200 kW rooftop solar system. If the utility's interconnection standard requires anti-islanding protection, which inverter feature satisfies this requirement?
- Maximum power point tracking (MPPT)
- Automatic disconnection upon grid outage (Correct answer)
- Battery backup bypass relay
- Reactive power compensation mode
Correct answer: Automatic disconnection upon grid outage
Anti-islanding protection requires the inverter to automatically disconnect from the grid when utility power is lost, protecting utility workers from energized lines.
Question 2: Under a typical PACE program, which party holds the superior lien position relative to the PACE assessment on the property tax bill?
- The PACE capital provider
- The first-mortgage lender
- Property tax authorities (Correct answer)
- The equipment manufacturer
Correct answer: Property tax authorities
Property tax liens are senior to most other liens, meaning the PACE assessment—collected like a property tax—generally has priority over the first mortgage.
Question 3: Which renewable system type is most appropriate for a PACE-financed coastal commercial property seeking to reduce electricity and thermal loads simultaneously?
- Ground-source heat pump (GSHP)
- Ocean thermal energy conversion (OTEC)
- Combined heat and power (CHP) with solar thermal (Correct answer)
- Offshore wind micro-turbine
Correct answer: Combined heat and power (CHP) with solar thermal
A CHP system with solar thermal collectors can simultaneously generate electricity and capture heat, addressing both electrical and thermal loads in a single PACE-eligible package.
Question 4: In PACE project underwriting, a 'simple payback period' of 8 years on a 20-year PACE term indicates what about the investment?
- The project will never break even
- Energy savings will exceed PACE payments well before the assessment term ends (Correct answer)
- The project is ineligible for PACE financing
- The property owner must provide additional collateral
Correct answer: Energy savings will exceed PACE payments well before the assessment term ends
A simple payback shorter than the PACE term means cumulative energy savings will surpass the project cost before the assessment period ends, indicating strong financial viability.
Question 5: Which solar racking system type is specifically designed for flat commercial rooftops and avoids roof penetrations by using ballast weight?
- Pole-mounted fixed-tilt racking
- Ballasted low-slope rooftop racking (Correct answer)
- Flush-mount rail system
- BIPV integrated glazing
Correct answer: Ballasted low-slope rooftop racking
Ballasted rooftop racking systems use weighted blocks to hold panels in place on flat roofs, eliminating the need for structural penetrations that could void roofing warranties.
Question 6: A PACE contractor must provide a Certificate of Completion before the PACE capital is disbursed. Which item does this certificate primarily confirm?
- That the property owner has no outstanding mortgage
- That the renewable system has been installed per the approved scope of work (Correct answer)
- That the utility has approved net metering
- That MACRS depreciation has been elected
Correct answer: That the renewable system has been installed per the approved scope of work
The Certificate of Completion confirms that all contracted work has been physically completed as specified, triggering the final PACE funding disbursement.
Question 7: Which factor most significantly affects the tilt angle selection for a fixed commercial rooftop solar array in the continental United States?
- Local wind load requirements
- The property's assessed value
- Geographic latitude (Correct answer)
- PACE assessment term length
Correct answer: Geographic latitude
Geographic latitude determines the optimal tilt angle; arrays are typically tilted at approximately the site's latitude to maximize annual solar energy capture.
CPACE Renewable Systems 3
A PACE-financed commercial building installs a 200 kW rooftop solar system.
If the utility's interconnection standard requires anti-islanding protection, which inverter feature satisfies this requirement?