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Own calculator is NOT allowed to use in the exam.

EE.FES.310 Introduction to Smart Grids and Renewable Energy — P. Järventausta & S. Valkealahti
Exam 19.10.2021

You can answer in Fnglish or in Finnish

1. a) What forms/types of energy are used to generate electricity? (3p)
b) To which forms of energy belong different sources of renewable energy? (3p)

2. a) How is electricity generated by hydropower plants and what is the future role of hydropower
in electricity generation? (3p)

b) Can our electricity needs be met by using only renewable energy sources? Justify your
answer. (3p)

3. Select two or three terms which relate to each guestion below and which have been dealt in the
course material. Y ou don't have to take all the terms relating to the guestion, just select two or
three to be discussed in your answer. First define these terms hriefly and then answer to the
specific guestion by your own words. Each guestion may have different terms. The length of the
answer with the definitions of the terms can be about 300 words in maximum.

a) Why electrical energy and its distribution have different pricing principles? (4 p)
b) How the distributed generation changes the operation of distribution networks? (4 p)

c) How the role of electrical energy end-users can be strengthened? (4 p)