1. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 1 UNIFIED REGIONAL PLANNING OF ELECTRICITY AND GAS DISTRIBUTION NETWORK WITH GIS ORIENTED PLANNING SOFTWARE

2. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 2 METHOD PHASE II Prediction of energy consumption till 2020. FAZA III Technical and economical optimisation of gas and electricity distribution systems PHASE I BASIC PLATFORM Questionnaire on energy consumption in households, services, industry and agriculture

3. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 3 QUESTIONNAIRE AND ENERGY CONSUMPTION ANALYSES 4 ZONES 1 – apartment buildings in Beli Manastir 2 – family houses in Beli Manastir 3 – larger settlements 4 – smaller settlements 3 % of households 20 % of services all industry and agriculture SCOPE:

4. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 4 STRUCTURE OF TOTAL FINAL ENERGY CONSUMPTION

5. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 5 TOTAL FINAL ENERGY CONSUMPTION

6. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 6 GAS NETWORK MODEL

7. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 7 GAS NETWORK MODEL

8. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 8 ECONOMICAL OPTIMISATION OF GAS NETWORK - CRITERIA gas selling price: 0,23 €/m 3 for households, 0,18 €/m 3 for services, 0,15 €/m 3 for industry and agriculture gas buying price: 0,13 €/m 3 increase of gas consumption 8 60 53 46 21 510 15 20 1 YEAR CONSUMPTION INCREASE (%)

9. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 9 ECONOMICAL OPTIMISATION OF GAS NETWORK - RESULTS whole system11,425,68,0 IRR = 12 %5,819,011,4 IRR = 14 %3,515,014,0 Max. profit2,211,715,8 IRR = 10 %8,422,99,7 IRR (%) CONSUMPTION (million m 3 ) INVESTMENT (million EUR) ECONOMIC CONDITION

10. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 10 ELECTRICITY NETWORK MODEL

11. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 11 ELECTRICITY NETWORK MODEL

12. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 12 ECONOMICAL OPTIMISATION OF ELECTRICITY NETWORK - CRITERIA load up to 100 % of thermal current under normal conditions and up to 120 % under fault conditions admissible voltage drop in 10(20) kV network up to 8 % under normal conditions and up to 12 % under fault conditions “N-1” criteria for the peak load over 1 MVA investment in power delivery quality if justified by lower costs of undelivered energy and losses reconstructions of major electricity distribution objects - 110/35 kV and 35/10 kV substations and 35 kV lines – older than 40 years

13. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 13 ECONOMICAL OPTIMISATION OF ELECTRICITY NETWORK - RESULTS independent electricity distribution network planning no gas distribution network ASSUMPTIONS:

14. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 14 ECONOMICAL OPTIMISATION OF ELECTRICITY NETWORK - RESULTS

15. Tomislav BARICEVIC HR Session 5 – Block 2 – Question 28 Barcelona 12-15 May 2003 15 CONCLUSION Investments in gas network can have significant impact on investments in electricity network Supply of gas to entire Baranja region lowers the necessary electricity network investments by 47% Almost all savings are achieved with the most profitable investment in the gas network Such synergies can be expected when large electricity network investments (like major substation or line) can be avoided by partial substitution of electrical energy consumption with gas