1. 18/11/07
Danube Water Conference
2018, Vienna, Austria
“Reduction of Operation and Maintenance costs by implementing Solar Energy at the Water Utility of Korca City”
Arlinda Ibrahimllari Join Stock Company UKKO SH.A

2. UKKO Sh.A Status: Join Stock Company Turnover: 2.3million €
Employee: 110
Location of operations: 1 City and 7 administrative unit in rural areas
Infrastructure:
Drinking Water Network 127 km
Sewerage Network 92 km
Centralized Wastewater Treatment Plant
Services:
Distribution of drinking water and 24 hour water supply service
Collection and treatment of sewerage and septic tanks

3. Waste Water Treatment Plant in Korca City
18/11/07
Waste Water Treatment Plant in Korca City
Secondary treatment technology, discharges in non-sensitive area ,that generated in agglomerations > 2000 p.e. (WWTP in the City of Korca is designed for a population of PE);
Simple management for water quality requirements and O&M;
Successful technology for a populated area with high density (Urban Zone of the Municipality of Korca);
Low maintenance costs
Fully automated
Secondary Treatment of all discharges from agglomerations of > 2000 p.e. for a not sensitive area (WWTP of the City of Korca designed for PE);
Easy for management in terms of effluent quality and operation;
Successfully applied in high density population areas (Municipality Area);
Low cost of maintenance
Fully automated

4. Plant Performance for 2017

5. WWTP Energy Cost vs Total Energy Cost of UKKO
18/11/07
WWTP Energy Cost vs Total Energy Cost of UKKO

6. Energy Efficiency and beyond ...
18/11/07
Energy Efficiency and beyond ...
Energy costs associated with operating a Wastewater Treatment Plant (WWTP) account for 15–40% of a facility’s total budget;but they're also one of the easiest expenses to control.
Water Supply and Sewerage Companies have the potential to become pure power generators
With conventional sources of energy, fluctuating costs are directly passed down to the treatment rates for users.
There are several option to be taken into account as renewable energy (biomass, biogas, solar, wind and / or hydropower)
Solar Panels helps to reduce and stabilize Energy costs
Energy and water are inseparable: energy is used to collect, treat, and distribute water while water is
used to cool reactors, run turbines, and act as a working fluid for power plants. Management strategies
for water and energy should be aligned due to the strong interdependence between vital water and
energy resources.
Water and wastewater utilities have the potential to become net energy generators
This can be accomplished by maximizing efficiency and adding renewable energy (solar, biogas, wind, and/or hydropower)

7. Benefits of Solar for Wastewater Treatment Plants
Sustainable energy source: the sun is an infinite resource that generates zero pollution
Carbon-free electricity, corresponding to peak demand periods
Reduced electricity bills
Minimal maintenance
Fast commissioning
Flexibility and scalability of systems
Efficient land use
Low risk

8. System Issues Project Completed July 2014 System Fixed panels Capacity
18/11/07
System Issues
Project Completed
July 2014
System
Fixed panels
Capacity
1.0 MW
Surface
2.3 Hectare
No. of modules
4158
No. of inverters 2
Investment
1.7 million €
Cleared land and roads required (Investim+Zbatim+kreditim) kredi komerciale me kolateral
Relatively level land is desirable (~1 to 3% slope)
Restricted access
Area required about 5 acres/ Megawatt (differs slightly with technology and greatly with storage)
Kërkohet toka dhe rrugë të pastruara
Niveli i tokës duhet të jetë relativisht i dëshirueshëm (~ 1 deri në 3% pjerrësi)
Zonë e kufizuar
Zona kërkohet rreth 5 hektarë/megavatë (ndryshon pak me teknologjinë dhe me kapacitetin)

9. Solar Panels Treatment capacity of WWTP : 500 l/s
18/11/07
Solar Panels
Treatment capacity of WWTP : 500 l/s
Consumed energy (average annual 2015) : Kw/m
Energy produced by solar panels : Kw/y or Kw/m
Efficiency: 92.7 %

10. Comparative table Consumption (KWH) Energy cost (€)
Production from Solar Panels
Efficiency of Photovoltaic Panels
(%)
Energy DOC (%)
Year 2014
1,745,560 74
Year 2015
1,505,800
92.5 4
Year 2016  
85.6 8
Year 2017
73.46
3.3

11. WWTP Costs for Year 2015

12. 18/11/07
UKKO Total Cost Vs Energy Cost (before and after Solar Energy Production)
ENERGY COSTS BEFORE SOLAR PANEL PRODUCTION
UKKO Costs
€ 138,123.93
WWTP Energy Cost
€ 149,921.72
Total Energy Cost
€ 288,045.65
ENERGY COSTS AFTER SOLAR PANEL PRODUCTION
UKKO Costs
€ 148,979.87
WWTP Energy Cost (after Solar Panel Energy Production)
€ 10,855.93
Total Energy Cost
€ 159,835.80

13. Summary
Wastewater treatment is a major contributor to the use of energy throughout the water cycle
Clean energy forms are advised to reduce the costs of waste water treatment
Potential saving from WWTP energy costs
Providing energy cost by WWTP of Korça City goes to improving capital and planning the structures
Long-term investment, secure and tangible
Pure Energy Produced for Internal Needs.

14. Solar Panel Investment pays off for the environment
Solar Panel Investment pays off for the environment. But most of all, it pays off for your utility.
Thank you !