CCP Solar, Wind & Storage Technologies 3

Question 1

What is 'perovskite' in the context of next-generation solar cells?

Accepted Answer

A class of crystal-structured materials used as light-absorbing layers in emerging PV cells

Answer

Perovskite solar cells use a crystal structure (ABX₃) as the photoactive layer and have rapidly achieved lab efficiencies exceeding 25%, rivaling crystalline silicon.

Question 2

Which grid service do battery energy storage systems (BESS) provide when they respond to frequency deviations within milliseconds?

Accepted Answer

Frequency regulation (Primary Frequency Response)

Answer

BESS can inject or absorb power within milliseconds to respond to grid frequency deviations, providing primary frequency regulation faster than any thermal generator.

Question 3

In a utility-scale solar project, what does 'bifacial gain' refer to?

Accepted Answer

Additional power generation from light captured on the rear side of bifacial panels

Answer

Bifacial solar panels generate electricity from both front and rear surfaces; the bifacial gain is the additional energy yield from rear-side irradiance, typically 5–30% extra.

Question 4

What is the primary purpose of 'repowering' an existing wind farm?

Accepted Answer

Replacing older turbines with larger, more efficient models to increase energy output

Answer

Repowering replaces aging turbines with modern, higher-capacity machines on the same site, often doubling or tripling energy output while using the existing land permits and grid connections.

Question 5

What does the 'duck curve' illustrate in power grid management?

Accepted Answer

The mismatch between daytime solar generation and evening demand peaks

Answer

The duck curve (named for its shape) shows how high midday solar generation creates a steep ramp requirement in the evening when solar drops and demand peaks, straining grid operators.

(CCP) Certified Climate Change Professional Practice Test

(CCP) Certified Climate Change Professional Practice Test

CCP Solar, Wind & Storage Technologies 3