In a 2012 paper that appeared in the Journal of Industrial Ecology it states. According to the IPCC, wind turbines when assessed in isolation, have a median life cycle emission value of between 12 and 11 (geq/kWh). While the more dependable alpine Hydropower and nuclear stations have median total life cycle emission values of 24 and 12 g CO2-eq/kWh respectively. Regarding interconnections, Ireland is connected to adjacent UK National Grid at an electricity interconnection level (transmission capacity relative to production capacity) of 9%. The two grids have a high wind correlation of 0.61, whereas the wind correlation between the Irish grid and the Danish grid is low at 0.09. Tourism One major aspect of wind farms in Ireland is tourist attraction and also local attraction. The Bord na Mona wind farm in Mount Lucas, Daingean, Co.Offaly has provided a local walk way through the newly established wind farm that attracts people of all ages. The walk way provides a safe environment off-road for walking, running and cycling. The walk way is approximately nine kilometres in distance with numerous stop off points for breaks. Maps can also be located in a variety of locations on the walk for guidance around the wind farm and back to allocated car parks. The walk way also provides aesthetic scenery on a relatively flat landscape. Such a walk attracts many people year round and circulates money back into the local community as tourists stop off in local shops. Grid study in Ireland An Irish study of the grid indicates that it would be feasible to accommodate 42% (of demand) renewables in the electricity mix. This acceptable level of renewable penetration was found in what the study called Scenario 5, provided 47% of electrical capacity (different from demand) with the following mix of renewable energies: 6,000 MW wind 360 MW base load renewables 285 MW additional variable renewables (other intermittent sources) The study cautions that various assumptions were made that "may have understated dispatch restrictions, resulting in an underestimation of operational costs, required wind curtailment, and CO2 emissions" and that "The limitations of the study may overstate the technical feasibility of the portfolios analyzed..." Scenario 6, which proposed renewables providing 59% of electrical capacity and 54% of demand had problems. Scenario 6 proposed the following mix of renewable energies: 8,000 MW wind 392 MW base load renewables 1,685 MW additional variable renewables (other intermittent sources) The