Shore Based Power Supply in Ports-A Case Study - Clean Air for ...

PORT OF CAGAYAN DE OROSHORE-BASED POWERSUPPLY EXPERIENCEPRESENTSByC.SAMUEL P. FONTANILLA

SHORE TO SHIP POWER SUPPLY• The shore to ship power supply is analternative electric power supply used by aship at berth to replace the electric powerproduced by the auxiliary engine of a ship.• It is also known as “cold ironing” because itallows the main engine and auxiliary enginesto literally cool down eventually goingcompletely cold after turning them off.

Our MotivationThe Clean Air Act states that:The State shall pursue a policy of balancingdevelopment and environmental protection. Toachieve this end, the framework for sustainabledevelopment shall be pursued. It shall be thepolicy of the State to:1. Encourage cooperation and self-regulation amongcitizens and industries through the application ofmarket-based instruments;2. Focus primarily on pollution prevention ratherthan on control and provide for acomprehensive management program for airpollution;3. Promote public information and education toencourage the participation of an informed andactive public in air quality planning andmonitoring

Our Motivation• Also, in line with theClean, Green and Blueprogram of the port wehave initiated theproject to prevent airemissions from ships.

WHAT WERE THE OBSTACLE/PROBLEMS THE PORT OFCAGAYAN DE ORO HAD TO OVERCOME• No existing provision ordesign for the SBPS• No appropriation forthe high cost to installthe alternative electricpower supply for ships• A new idea which wasnot easy to sell tohigher management

PRIVATE SECTOR PARTICIPATION• Due to high cost forinstalling the SBPS, Portof Cagayan de Oro hasengaged the shippinglines(private sector) toinvest in shore basedpower supply. Thus, in2008, the first ferry hadconnected a SBPS in ourport.

FERRY BOATHOW THE SHORE BASED POWER SUPPLY WORKS

WHAT POWER DO WE SUPPLY• The SBPS gets power from the ports powersupply wherein it is connected to the powerutility company.• The power utility company gets its powerfrom the hydro-electric generating plant.• Therefore , when SBPS is in use, zero emissionis taking place.

INSTALLATION COST• Installation of the shore based power supplyfor one ferry boat cost around US$ 8,000.• However, if the construction of the SBPS isbased on what is installed in internationalports, the cost could be tripled.• The cost vary also depending on the loadrequirement of the ship.

COST OF FUEL USING AUXILIARYENGINE VS. COST OF SBPS PER YEAR• Aux. Engine-1000KVA/800KW• Fuel Type – Diesel• Fuel Consump.=55 li/hr.• Cost per liter=$0.907Use: 6 hrs. 3 times/week1 year=52 weeksCost= 55x0.907x6x3x52= US$ 46,692.36 yearPo. Cost=Php 13.92/KW-hr=US$ 0.316Use:6 HRS. 3 times/weekAve. Consump.=10,080kwhr./month1 year = 12 monthsSBPS Cost=0.316x10080x12=US$38,223.36

SAVED COST BY SHIPPING LINE• 2 ships connected to the shore based powersupply results in savings of US$16,938.00 peryear (return on investment < 2 years).• The company saves on fuel and maintenancecost.• Cost saving and compliance withenvironmental regulations the of thegovernment to reduce emissions go hand inhand.

Calculation of Emission Reduction from ShoreBased Power SupplyDetails of OperationVessel A Vessel B Vessel C Vessel DNumber of ferries per day 1 1 1 1Hours at berth per ferry 6 6 6 12Days of operation per year 365 365 365 365Daily Hours at berth 6 6 6 12Annual hours at berth 2190 2190 2190 4380Default Values (US EPA,Details of Vessel Engine Usage2009)Auxiliary engine power (kW) 800 300 300 75 2850Auxiliary engine load at berth (%) 26 26 26 26 26Average boiler power used at berth (kW) 109 109 109 109 109Details of fuel specificationAuxiliary fuel type (choose RO, MDO,MGO) MGO ROAverage auxiliary fuel sulphur content (%) 2.7 2.7Boiler fuel type (choose RO, MDO, MGO) RO ROAverage boiler fuel sulphur content (%) 1 2.7Power CalculationsAuxiliary Engines annual energy (kW) 455520 170820 170820 85410Boilers annual energy (kW) 238710 238710 238710 477420Total PowerAuxiliary Engines annual energy (kW) 882570Boilers annual energy (kW) 1193550

Calculation of Emission Reductionfrom shore based Power SupplyEmission Factors (g/kWh) NOx PM10 PM2.5 HC CO SOx CO2 N2OAuxiliary Engines 12.2 1.0 0.9 0.4 1.1 10.7 646.1 0.03Boilers 1.8 0.6 0.5 0.1 0.2 5.7 923.0 0.1Annual Emissions Reduction(tpa) NOx PM10 PM2.5 HC CO SOx CO2 N2OAuxiliary Engines 10.7 0.9 0.8 0.4 1.0 9.5 570.2 0.0Boilers 2.1 0.7 0.6 0.1 0.2 6.8 1101.6 0.1Total 12.8 1.6 1.5 0.5 1.2 16.2 1671.8 0.1