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Nicosia, Cyprus

The Electricity Authority of Cyprus ), whose head office is located in Strovolos, currently holds a near monopoly on electricity generation in Cyprus. It operates through three power stations with a total capacity of 1460MW: Dhekelia Power Station - 460MW Moni Power Station - 140MW + 125MW in storage Vasilikos Power Station - 860MWThe company also distributes electricity produced by four privately held windfarms: Orites - 82MW Santa Anna - 20MW Alexigros - 31.5MW Koshi - 10.8MWAdditionally, individuals and private companies own more than 30MW of solar panels and almost 10MW of biofuel installations and the EAC distributes the electricity these produce too.In 2012, the EAC generated a total of 4,443GWh of electricity consuming 1,109,371 tonnes of fuel costing €645,049,000. Maximum demand in the areas controlled by the Republic of Cyprus reached 997MW. A total of 7.0GWh of the produced electricity in 2012 valued €1,395,000 ended up in the area occupied by Turkey and no money could be collected for it.The Authority served 548,498 customers in 2012, that is 242 per employee, up from 229 in 2011. The electricity sales per employee reached 1.92GWh, down from 1.94GWh in 2011.Company investments in 2012 on its assets reached €99,863,000, thus exceeding the net profit by more than €22,000,000.On 11 July 2011, a total of 98 containers of munitions stored at Evangelos Florakis Naval Base adjacent to Vasilikos Power Station exploded. The huge explosion caused extensive damage to the station. To cope with the extended loss of its largest power station, the Authority had to impose rolling blackouts. Christofias, who was responsible for the destruction, has yet to face punishment.As a precondition to the accession of Cyprus to the European Union, the local market for electricity generation has been opened to private companies, but so far no private power plants have been built, although four licenses have been granted by Cyprus Energy Regulation Authority. In the meanwhile, the EAC diversified into communication and cable television services in cooperation with a private company.In 2005, the company was involved in a high profile scandal involving the alleged theft of millions of Cyprus pounds from the employees' pension scheme. Wikipedia.

Poullikkas A.,Electricity Authority of Cyprus
Desalination | Year: 2010

In this work, an optimization model using a genetic algorithm technique is developed for the desalinated water production cost using photovoltaics (PVs). In order to demonstrate the applicability of the method a parametric study is carried out for the optimum reverse osmosis (RO) desalinated water cost. In particular, taking into account various RO plant capacities the desalinated water cost have been determined for various scenarios from which the requirements in electrical energy are covered partly (25%, 50%, 75%) and/or fully (100%) from PVs. Based on the data and the assumptions used, the results indicate that the production cost of desalinated water is increased with the degree of integration of PVs for partial and/or total electricity requirements of the RO plant. © 2010 Elsevier B.V.

Poullikkas A.,Electricity Authority of Cyprus | Poullikkas A.,American University of Sharjah
Sustainable Energy Technologies and Assessments | Year: 2013

In this work, a comparative assessment of net metering vs. feed-in-tariff (FiT) supporting schemes for residential PV systems is carried out. A formulation for the computation of net metering supporting scheme parameters, in half hour intervals, is developed and typical household integrated with a rooftop PV system is investigated. The effect of the size of PV system with respect to the net metering supporting scheme is examined by varying the PV capacity and the effect of the electricity retail cost rate is investigated by varying the electricity retail cost rate. The comparative results indicate that net metering supporting scheme performs better than a FiT supporting scheme when the household electricity bill is taken into account. From the analysis it is clear that under certain conditions net metering supporting scheme becomes profitable. © 2013 Elsevier Ltd.

Poullikkas A.,Electricity Authority of Cyprus
Renewable and Sustainable Energy Reviews | Year: 2013

In this work, an overview of the different types of batteries used for large-scale electricity storage is carried out. In particular, the current operational large-scale battery energy storage systems around the world with their applications are identified and a comparison between the different types of batteries, as well as with other types of large-scale energy storage systems, is presented. The analysis has shown that the largest battery energy storage systems use sodium-sulfur batteries, whereas the flow batteries and especially the vanadium redox flow batteries are used for smaller battery energy storage systems. The battery electricity storage systems are mainly used as ancillary services or for supporting the large scale solar and wind integration in the existing power system, by providing grid stabilization, frequency regulation and wind and solar energy smoothing. © 2013 Elsevier Ltd.

Patsalides M.,University of Cyprus | Efthymiou V.,University of Cyprus | Stavrou A.,Electricity Authority of Cyprus | Georghiou G.E.,University of Cyprus
IET Renewable Power Generation | Year: 2015

Renewable energy sources are expected to have a considerable share in the global energy mix over the next years and consequently further research is required to enhance the planning strategies, modify prudently the existing standards and set quality levels on delivered power in order to accommodate the penetration of these technologies. Depending on the distribution grid dynamics and the load demand, the amplitude of voltage may vary significantly, and therefore proper simulation models are required for performing dedicated studies. In this study, a simplified and accurate model representing the distribution grid dynamics is introduced for power quality studies in the presence of distributed photovoltaic (PV) generators. The proposed simplified distribution grid model (SDGM) is validated using measurements and it is then used along with a verified PV system model to estimate the voltage variation and PV capacity of the distribution grid under investigation. Moreover, a sensitivity analysis is performed by varying the parameters of the SDGM to assess how the PV capacity is altered. As a last step, common voltage regulation schemes are analysed through the use of the proposed model, validating operational modes that can accommodate high distributed PV capacities. © 2015 The Institution of Engineering and Technology.

Zachariadis T.,Cyprus University of Technology | Poullikkas A.,Electricity Authority of Cyprus
Energy Policy | Year: 2012

We study the costs of electricity disruptions in Cyprus, which suffered severe power shortages in summer 2011 after an explosion that destroyed 60 % of its power generating capacity. We employ both economic and engineering approaches to assess these costs. Among other calculations, we provide estimates of the value of lost load by economic sector and the hourly value of electricity by season and type of day. The results of two economic methods employed to assess welfare losses differ largely, indicating that the assessment of outage costs is associated with many uncertainties. Our calculations show that the emergency actions taken by national energy authorities in response to that accident, though not necessarily optimal, have generally been appropriate and in line with international best practices: the additional costs incurred due to these measures are lower than the economic losses avoided thanks to these actions. Preferential treatment of specific consumer types in the case of repeated power outages remains an open policy question. © 2012 Elsevier Ltd.

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