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# #### 1. One nuclear reactor having a nominal power of 800MW generate an annual amount of 514k toe (1k =1000) of electricity. What is the correct capacity factor of this power unit ?

# ##### Ans: 85%

# #### 2. The above capacity factor is mainly due to

# ##### Ans: the maintenance of the reactor

# #### 3. We consider an offshore wind farm of 150 turbines of 6MW of nominal power each. The annual capacity factor of this large wind farm is around 35%. The annual amount of electric energy produced will be around:

# ##### Ans: 238k toe

# #### 4. How many offshore wind turbines of 6MW (same capacity factor as Q3) will be needed to produce the same amount of annual energy as a nuclear reactor of 800MW having a capacity factor of 78%

# ##### Ans: 297

# #### 5. We consider the above offshore wind farm of 150 turbines of 6MW of nominal power each. The annual capacity factor is around 35%. The typical seasonal variability of the energy production for this wind farm is given by the following graph:
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# <img src="https://d3c33hcgiwev3.cloudfront.net/imageAssetProxy.v1/Vpc3jyi9Eees5g7IX40wTA_515d3061a44278b25f5c2687f9aa562b_seasonal-wind-variability-production_DENMARK.png?expiry=1549238400000&amp;hmac=3s3kXFBhiBdErizM6DGHzIBn-1ts7knxUNPQ6ycgFFE" alt="">
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# #### This graph gives, in percentage, a relative value of the energy produced each month. The monthly mean energy (the annual energy /12) correspond to 100. Find which statements are true.

# ##### Ans: 
# - The maximal power output of the wind farm is 900MW
# - The maximal monthly production is around 340 GWh in december

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