Renewable Energy


Today’s Facts


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Renewable Energy Quiz

1 / 5

What limits how much solar energy can be added to the grid?

2 / 5

Net metering allows solar panel owners to sell excess electricity back to the grid.

3 / 5

What emissions do fuel cells produce at the point of use?

4 / 5

How can wind energy technology create economic opportunities?

5 / 5

Biomass energy comes from burning municipal waste.

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Renewable Energy Knowledge Test

1 / 20

How many megawatts were actually installed globally by 2018?

2 / 20

Reservoirs created by dams can provide water storage benefits beyond electricity generation.

3 / 20

What is the rotor diameter of the world's largest wind turbine (as of 2019)?

4 / 20

The largest wind turbines are typically found on land rather than at sea.

5 / 20

What is "net metering"?

6 / 20

Once built, renewable facilities are expensive to operate.

7 / 20

Why are horizontal-axis rotors more efficient than vertical-axis rotors?

8 / 20

Wind turbines need deep, strong foundations to support their massive size.

9 / 20

Ocean thermal energy relies on warm water temperatures.

10 / 20

What types of cars can use synthetic fuel?

11 / 20

Compared to wind farms, solar farms require how much more cement, steel, and glass?

12 / 20

Hydroelectric power generates pollution during operation.

13 / 20

During the day, solar energy pumps water from the lake to the higher lake.

14 / 20

It is difficult for renewable energy sources to generate power on the same large scale as fossil fuels.

15 / 20

axis rotors are more efficient than vertical-axis rotors.

16 / 20

Geothermal systems can be built underground, leaving very little land footprint.

17 / 20

The anti-reflection coating helps reduce light since silicon is naturally shiny.

18 / 20

Hydroelectric projects change water levels, currents, and paths for fish.

19 / 20

What is the main problem with flow batteries?

20 / 20

What element is hydrogen commonly combined with?

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