Energy and Environment

Security of supply in a green power market - The challenges and opportunities of intermittent power

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Lind, Arne

Department Head

 

Security of electricity supply in the long run is both a question of having sufficient energy (TWh) and power (GW) capacity, and equally whether the system can deliver electricity efficiently where and when it is needed. This project concerns how to organize the power market in order to avoid short-run system breakdown and at the same time give socially optimal long-run incentives for investments in production and transmission capacities. Optimality must be defined with respect to both location and technical structure in the light of the large increases in intermittent power that are expected by 2050 and beyond.

In the project IFE will focus on improving the modelling of intermittent power in our TIMES-Norway model. One way of coping with the uncertainty of intermittent power is to store excess electricity for periods when demand is greater than the supply. Electrical energy storage technologies may be relevant to time shifting, power quality, efficient use of the network, emergency power supply, and the use in electric vehicles and mobile appliances. An energy storage system is typically classified according to the form of energy used. This includes mechanical storage (e.g. pumped hydro, compressed air, flywheel), electrochemical storage (e.g. secondary batteries, flow batteries), chemical storage (e.g. hydrogen), electrical storage (e.g. supercapacitors) and thermal storage.