REP Environmental Impacts of Renewables 3

Question 1

A solar farm in the Mojave Desert seeks environmental permits. Which species-specific concern is most likely to require mitigation?

Accepted Answer

Desert tortoise habitat displacement

Answer

The desert tortoise is a federally threatened species whose habitat overlaps extensively with utility-scale solar development sites in the Mojave and Sonoran Deserts.

Question 2

What is 'energy payback period' and why is it relevant to environmental assessment of renewables?

Accepted Answer

The time needed for a renewable system to generate the energy used in its production

Answer

Energy payback period measures environmental efficiency — a shorter payback means the system spends more of its life genuinely offsetting fossil fuel emissions rather than repaying its manufacturing debt.

Question 3

Which wind energy development scenario raises the greatest concern for bat mortality?

Accepted Answer

Mountain ridge turbines near forested areas during migration season

Answer

Forested ridgelines concentrate migrating bats following terrain, and turbine blades create barotrauma (internal injuries from pressure change) that kills bats even without direct contact.

Question 4

In lifecycle analysis (LCA) of renewable energy, what does the term 'system boundary' define?

Accepted Answer

The scope of processes and inputs included in the environmental accounting

Answer

System boundary determines which upstream (raw material extraction) and downstream (end-of-life) stages are counted in the LCA, directly affecting the completeness and comparability of results.

Question 5

Thin-film solar panels using cadmium telluride (CdTe) raise environmental concerns primarily because cadmium is:

Accepted Answer

A heavy metal that is toxic and persists in the environment

Answer

Cadmium is a highly toxic heavy metal that bioaccumulates in ecosystems and can leach from panels in landfills if not properly managed at end-of-life.

(REP) Certified Renewable Energy Professional Practice Test

(REP) Certified Renewable Energy Professional Practice Test

REP Environmental Impacts of Renewables 3