Which is not the objective of demand-side management*1 pointSeasonal peak reductionCost effective energy savingsLowering the cost of electricityRise the emissions

The main objective of energy management is to*1 pointMinimize energy costMinimum environmental effectsMaintain optimum energy procurement and utilizationAll of these

Consider an electricity market where the base of the demand curve is vertical and varieslinearly between 4000MW and 8000MW (so is equally likely to be found anywhere inthat range). Above 7500MW demand can be curtailed at a price of $4000/MWh. Themarket is competitive with three types of plants as below.Technology FC per MWh Variable costs perMWhCarbon Emissionsin tonnes perMWhPeak (diesel peaker) $18 $160 25Mid (gas) $35 $50 10Baseload (hydro) $55 $0 0(a)What is the optimal amount of baseload plant that should be built? (2 marks)(b) What is the duration of the price spike so that the peaker plant just recovers itsfixed costs? (2 marks)(c) What is the optimum mid-load capacity? (2 marks)(d) What is the total capacity and hence peak capacity? (2 marks)(e) Sketch the load duration curve and the offer stack (2 marks)(f) Show all plants just cover costs (4 marks)(g) Suppose now the government imposes a tax of $30 a tonne. Suppose there is nochange in capacity (so capacity doesn’t adjust). Calculate the profit that each type ofplant makes. Why do some plants make a profit even though the market iscompetitive? (4 marks)

The demand side management can be achieved by the technique of *1 pointTime of day pricing and meteringSingle-utility power exchange modelNon uniform Load distributionNone of these

Which of the following is a disadvantage of renewable energy?*1 pointHigh pollutionAvailable only in few placesHigh running costUnreliable supply

Energy management strategies in the electric power sector commonly include:*a) Optimizing transmission efficiencyb) Diversifying energy sourcesc) Enhancing grid resilience and reliabilityd) Integrating renewable energy technologiese) All the above