Overview of biomethane markets and regulations ... - Green Gas Grids
Overview of biomethane markets and regulations ... - Green Gas Grids
Overview of biomethane markets and regulations ... - Green Gas Grids
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Figure 2: Transmission grid <strong>of</strong> Croatia (source www.plinacro.hr)<br />
The natural gas transmission system comprises 2,034 km <strong>of</strong> pipelines, 142 exit<br />
metering-reduction stations with 210 metering lines <strong>and</strong> 19 entry metering<br />
stations. Regarding distribution, the total gas pipeline length is 15,980 km. There is<br />
a uniform gas quality. The share <strong>of</strong> methane in the Croatian natural gas grid varies<br />
between 85 <strong>and</strong> 95 %, therefore <strong>biomethane</strong> production <strong>and</strong> the adjustment to<br />
natural gas quality is expected to dem<strong>and</strong> less effort compared to public grids with<br />
high calorific gas. The <strong>Gas</strong> is odorized in the distribution grid. The supervising<br />
authority in charge <strong>of</strong> regulating the natural gas market is Croatian Energy<br />
Regulatory Agency (HERA).<br />
Natural gas plays a minor role in transportation. According to the NGVA, by end <strong>of</strong><br />
2010 only about 200 vehicles ran on natural gas, which was about 0.01% <strong>of</strong> the<br />
total number <strong>of</strong> cars <strong>and</strong> trucks in the country. There are two filling stations<br />
<strong>of</strong>fering CNG in Croatia, one located in Zagreb <strong>and</strong> the other one in Ivanic Grad.<br />
Technical st<strong>and</strong>ards for <strong>biomethane</strong> <strong>and</strong> natural gas<br />
The Act on Natural <strong>Gas</strong> Market (Zakon o tržištu plina) determines the rules <strong>and</strong><br />
measures for performing energy-related activities in the natural gas sector, the<br />
rights <strong>and</strong> obligations <strong>of</strong> the gas market participants, the unbundling <strong>of</strong> activities <strong>of</strong><br />
the system operators, third party access to the natural gas system <strong>and</strong> the natural<br />
gas market opening. According to this act, biogas, gas from biomass <strong>and</strong> other<br />
gases are permitted for injection into the natural gas grid presuming the same<br />
technical <strong>and</strong> safety st<strong>and</strong>ards for natural gas are fulfiled. <strong>Gas</strong> quality requirements<br />
for natural gas are laid down in the st<strong>and</strong>ard General condition for natural gas<br />
supply (OG 43/09). Due to the fact that the detailed st<strong>and</strong>ards <strong>and</strong> obligations for<br />
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