¿øÀڷ±׸°¼ö¼Ò, õ¿¬°¡½º ¹è°ü¸ÁÀÇ ¼ö¼Ò È¥ÇÕ°ú ¿øÀÚ·Â ¼ö¼Òº´ÇÕ¹ßÀü Ç÷£Æ®
õ¿¬°¡½º ¹è°ü¸Á¿¡ ´ëÇÑ ¼ö¼Ò È¥ÇÕÀ» Áö¿ª³¹æ(¶Ç´Â ¿º´ÇÕ¹ßÀü)À» À§ÇØ Ãµ¿¬°¡½º¸¦ »ç¿ëÇÏ´Â Áö¿ª¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Ù. üÀû ±âÁØÀ¸·Î ÃÖ´ë 20 %ÀÇ ¼ö¼Ò È¥ÇÕÀº ±âÁ¸ õ¿¬ °¡½º ¹è°ü¸ÁÀÇ Áß¿äÇÑ ºÎºÐÀ» È°¿ëÇÒ ¼ö ÀÖ´Ù. À̸¦ À§ÇØ ÃÖ¼ÒÇÑÀÇ ÀÎÇÁ¶ó¿Í ÃÖÁ¾ »ç¿ë Àåºñ°¡ ÇÊ¿äÇÏ´Ù.
20 % È¥ÇÕ ºñÀ²(üÀû ±âÁØ)ÀÇ »ç¿ëÀº ÀÌ¹Ì ÀÔÁõµÇ¾úÁö¸¸, ¿¡³ÊÁö ±âÁØÀ¸·Î ¾à 7 %¿¡ ºÒ°úÇϹǷΠȥÇÕµÈ ¼ö¼ÒÀÇ Åº¼Ò ¹ßÀÚ±¹¿¡ µû¶ó ¿Â½Ç°¡½º ¹èÃâ·®Àº 7 % ¹Ì¸¸À¸·Î °¨¼ÒÇÑ´Ù. ±×·¯³ª ¼Ò·®ÀÇ ¼ö¼Ò¸¦ °¡½º ¹è°ü¸Á¿¡ È¥ÇÕÇÏ¸é ¼ö¼Ò ¼ö¿ä¸¦ Å©°Ô Áõ°¡½Ãų ¼ö ÀÖ´Ù. ´Ü±âÀûÀ¸·Î ¼ö¼Ò»ý»ê ±â¼úÀÇ ±Ô¸ð È®´ë ¹× ºñ¿ë Àý°¨¿¡ ±â¿©ÇÒ °ÍÀÌ´Ù.
±×·¯³ª ÃÖÁ¾ ¼ÒºñÀÚ¿¡°Ô »ó´çÇÑ ºñ¿ëÀÌ Ãß°¡ µÉ ¼öµµ ÀÖ´Ù. ¼¼°èÀÇ ¸ðµç õ¿¬ °¡½º »ç¿ë·®¿¡ 3 % ¸¸ ¼ö¼Ò È¥ÇÕÀ» Çصµ ±×¸°¼ö¼Ò ¼ö¿ä°¡ ¿¬°£ 12Mt H2/yr¿¡ °¡±õ°Ô Áõ°¡ÇÏ¸ç ºñ¿ëÀº õ¿¬°¡½º °ø±Þ ºñ¿ë¿¡ ¾à 3-15 %°¡ Ãß°¡µÈ´Ù. ¼öÀüÇØ ¼ö¼Ò·Î ÀÌ·¯ÇÑ ¼ö¿ä¸¦ ÃæÁ·½ÃÅ°±â À§ÇØ ¾à 70GWÀÇ Àü±âºÐÇØ ¿ë·®ÀÌ ÇÊ¿äÇÏ´Ù.
(Ãâó: Projected Costs of Generating Electricity 2020 Edition, IEA/NEA, page 206)
Á¤ºÎÀÇ ¼ö¼Ò°æÁ¦ È°¼ºÈ ·Îµå¸Ê¿¡ ÀÇÇϸé, Çѱ¹Àº ºÎÁ·ÇÑ ±×¸°¼ö¼Ò¸¦ ¼öÀÔÇÒ ¿¹Á¤ÀÌ´Ù. ±×¸°¼ö¼Ò ¼öÀÔÀº ÇöÀç ºñ½Ñ ¾×Èõ¿¬°¡½º(LNG) ¼öÀÔ¿¡ Ãß°¡ÇÏ¿© ¿ÜÈ À¯ÃâÀ» Å©°Ô Áõ°¡½Ãų °ÍÀÌ´Ù. µû¶ó¼ Çѱ¹Àº ±¹³» LNG Å͹̳ΠÀαÙÀÇ ÇØ¾ç ¿øÀÚ·Â ¼ö¼Òº´ÇÕ Ç÷£Æ®¿¡¼ õ¿¬°¡½º ¹è°ü¸ÁÀ» È°¿ëÇÑ ±×¸°¼ö¼Ò °ø±ÞÀ» °ËÅäÇÒ ÇÊ¿ä°¡ ÀÖ´Ù.
Hydrogen blending into natural gas distribution grids
This option is particularly interesting in regions relying on natural gas for heating. Hydrogen blends up to 20% on a volumetric basis can make use of an important fraction of the existing natural gas distribution infrastructure and would require minimal infrastructure and end-use equipment
adaptation.
The use of 20% blending shares (on a volumetric basis) has already been demonstrated, although it represents only around 7% on an energy basis and, therefore, less than 7% decrease in GHG emissions depending on the carbon footprint of the hydrogen blended. Still, blending small fractions of hydrogen into the gas grid could represent a significant increase in hydrogen demand
in the short term, thus contributing to the scale up and cost reduction of hydrogen generation technologies.
However, it could also add a significant cost to the end user. Blending just 3% by
volume into all natural gas use around the world would boost clean hydrogen demand by close to 12 Mt H2/yr but would add around 3-15% to natural gas supply costs. Meeting this demand with electrolytic hydrogen would represent around 70 GW of electrolysis capacity.
(Projected Costs of Generating Electricity 2020 Edition, IEA/NEA, page 206)