Energy Efficient Remediation Public Private Innovation Project with the Region of Zealand 2012 Analysis and action plan for implementation of solar energy at remediation units Region Zealand: Else Kathrine Friis Hasse Milter Christian Fabricius Jens Lerche Mortensen Orbicon: Trine Skov Jepsen Kresten Andersen Mads Møller Dansk Solenergi
Aim, Analysis and Action Plan Aim: The project aimed to assess the potential to reduce operation cost and emissions from remediation units by switching to green energy in form of solar power cells. Analysis: Analysis of technical, visual and economical conditions in relation to photovoltaic systems on the regions remediation units. Action plan: Preparation of an action plan implementing photovoltaic systems at the remediation units. 2
The Region of Zealand The Region of Zealand is 1 out of 5 regions Responsible for localization and handling of soil and groundwater pollution 31 energy consuming remediation units with a long operation horizon 3
Remediation units in the Region of Zealand More than 70,000 are used per year exclusively for electricity operating the facilities. 4
General Information on Photovoltaic Units Types of photovoltaic units: Grid connected With local storage (Stand alone) Hybrid case Photovoltaic cell Photovoltaic module 5
Design 6
Politically Correctly Placed Solar Power Cells Angle of solar modules Vest South vest South South east East Best solution: Sun tracker 7
Dimensioning a Solar System - Energy Production vs. Energy Consumption Important when dimensioning a solar system Yearly consumption of energy Pattern of consumption (yearly, daily) Dimensioned for 12 months production Dimensioned for 6 months production 8
Possibilities of Implementing Photovoltaic Units at 3 Remediation Units Unit 1, Water treatment plant in industrial area Unit 2, Water treatment plant in industrial area Unit 3, Active ventilation in urban area Following parameters were investigated and measured: Location of the remediation unit (Industrial vs. urban area) Options for optimal placement of solar modules Conditions concerning the current electrical installation (phases, peaks and daily energy consumption) The annual electricity consumption The annual solar radiation 9
Economy Regulations Grid Connected Unit Current conditions: Probably restrictions on the size of the solar system build by the Region Electricity sold to the grid is purchased by the hour: 0-10 years: 0.08 /Kwh 10-20 years: 0.05 /Kwh (market price) 20 years -: market price Proposal waiting for acceptance in EU: No restrictions on the size of the solar systems Electricity sold to the grid is purchased by the hour: 0-10 years: 0.16 /Kwh (If established in, will decrease to 0.15 if established in 2015) 10 years -: market price No clear answers on the economic regulations Kilde: Energinet.dk 10
Economy Grid Connected Unit Calculation from BOLIUS (The Knowledge Centre of Homeowners) Assumptions: Electricity prize: 0.21 /kwh (Annual increase of 2,8 %) By the hour payment 0.16 /kwh in 10 years hereafter market prize Production 150 kwh/m 2 (Efficiency of 15 %) Prize establishing solar panels 339 /m 2 Interest rate of 4% No tax on electricity production Installation 2,687 Inverter 2,016 Not included: Maintenance! Disassembly! Annualized sizing 11
Dimensioned for 6 months production Dimensioned for 12 months production Economy Grid connected solar system Production 21.273 kwh/yr 24,724 after 25 years Annually savings Total savings Production 8.198 kwh/yr 4367 after 25 years 12
Economy Stand Alone with Batteries Stand alone and 12 months production Annual consumption [kwh] Total investment [ ] Payback time [years] Total savings over 25 years [ ] Unit 1: Møllegade 1 Karise Unit 2: Platanvej 19 Nykøbing F. Unit 3: Adelgade 111 Præstø 14,413 131,000 >25-148,000 5,168 51,000 >25-65,000 2,185 25,000 >25-35.000 13
Total consumption of energy [kwh/year] Total investment [ ] Payback time [years] Total savings over 25 years [ ] Economy 1 to 3 Large Remediation Facilities Grid connected and 12 months production 1 large remediation unit 28,114 99,000 19 52,000 3 large remediation units 69,078 245,000 19 126,000 All remediation units 220,500 882,000 24 124,000 14
Reduction in Greenhouse Gasses CO 2 0,5 kg/kwh SO 2 0,004 kg/kwh NO x 0,005 kg/kwh Source: Dansk Solenergi Values from production of electricity in a traditional Danish power plant 12 months energy production Reduction in kg CO 2 SO 2 NO x Unit 1: Møllegade 1 Karise 10,638 85 106 15
Action Plan and Recommendations Do not implement photo voltaic systems as the legislation is today! Call your electricity supplier for 100 % green energy instead! Do not establish hybrid systems! Only establish stand-alone systems in remote areas with low consumptions! Focus on 1 pilot solar system! - Grid-connected - The remediation unit should have a large energy consumption - The remediation unit should be operated for many years - The solar panels should be established in optimal position - The project should be clarified at the taxation authority, as there are still some unclarified conditions. 16
Action Plan and Recommendations Keep an eye on this: - Legislation - Energy prizes - Effect, prize and lifetime of solar cells - Interest rate on loans for photovoltaic units 17