Panama Power Generation Energy Storage Frequency Regulation Project

In 2017, Panama's power system had very large installed hydropower capacity (54% of total capacity) and substantial VRE capacity (45.3%). The generation breakdown was 64% renewable energy (36% run-of-river hydro, 18% reservoir hydro, 8% wind, 2% solar photovoltaics (PV)) and 36% thermal generation (29% oil and 7% coal).

Table 3 presents the values of these indicators for the 2030 renewables scenario with an optimised generation capacity mix. Panama's power system would still have enough flexibility to handle even higher penetration of VRE, as seen in the 2030 renewables scenario with investments.

Panama expects total energy demand to more than double between 2017 and 2030 (+113%), with peak demand growing from 1.6 GW to 3.5 GW. Panama is currently connected to Costa Rica via a 300 MW transmission line. A 400 MW high-voltage direct current (HVDC) interconnector with Colombia is expected to be commissioned by 2022.

In the absence of a cross-border electricity market, this interconnection was modelled assuming that Panama imports energy from Colombia at the high price of USD 200 per megawatt-hour (MWh). Because imports are likely the most expensive source of electricity, they will be required only if Panama's internal generation mix is unable to meet demand.

The frequency regulation power optimization framework for multiple resources is proposed. The cost, revenue, and performance indicators of hybrid energy storage during the regulation process are analyzed. The comprehensive efficiency evaluation system of energy storage by evaluating and weighing methods is established.

With the rapid expansion of new energy, there is an urgent need to enhance the frequency stability of the power system. The energy storage (ES) stations make it possible effectively. However, the frequency regulation (FR) demand distribution ignores the influence caused by various resources with different characteristics in traditional strategies.