section_path: Economy/Major industries/Energy
section_name: Energy
paragraph_text: Energy
  
  Although for most of their existence electricity networks in the Republic of Ireland and Northern Ireland were entirely separate, the island has operated for some time as a single market for electricity. Both networks were designed and constructed independently post-partition but they are now connected with three interlinks and are also connected through Great Britain to mainland Europe. The situation in Northern Ireland is complicated by the issue of private companies not supplying Northern Ireland Electricity with enough power. In the Republic of Ireland, the ESB has failed to modernise its power stations, and the availability of power plants has recently averaged only 66%, one of the worst such rates in Western Europe. EirGrid has started building a HVDC transmission line between Ireland and Great Britain with a capacity of 500 MW, about 10% of Ireland's peak demand.
  
  As with electricity, the natural gas distribution network is also now all-island, with a pipeline linking Gormanston, County Meath, and Ballyclare, County Antrim. Most of Ireland's gas comes through interconnectors between Twynholm in Scotland and Ballylumford, County Antrim and Loughshinny, County Dublin. Supplies come from the Corrib Gas Field, off the coast of County Mayo, with a supply previously also coming from the Kinsale gas field off the County Cork coast. The County Mayo field faces some localised opposition over a controversial decision to refine the gas onshore.
  
  Ireland has an ancient industry based on peat (known locally as "turf") as a source of energy for home fires. A form of biomass energy, this source of heat is still widely used in rural areas. However, because of the ecological importance of peatlands in storing carbon and their rarity, the EU is attempting to protect this habitat by fining Ireland for digging up peat. In cities, heat is generally supplied by natural gas or heating oil, although some urban suppliers distribute sods of turf as "smokeless fuel" for domestic use.
  
  The Republic has a strong commitment to renewable energy and ranks as one of the top 10 markets for clean-technology investment in the 2014 Global Green Economy Index. Research and development in renewable energy (such as wind power) has increased since 2004. Large wind farms have been constructed in Cork, Donegal, Mayo and Antrim. The construction of wind farms has in some cases been delayed by opposition from local communities, some of whom regard the wind turbines as unsightly. The Republic is hindered by an ageing network that was not designed to handle the varying availability of power that comes from wind farms. The ESB's Turlough Hill facility is the only power-storage facility in the state.