There is a good article about Solar power in Ireland here
'It is expected that about 600-700 MW of new solar will come on-stream as a result of this renewable energy support scheme... In sunnier Spain, auctions for solar can get it on the grid for about €24 per megawatt-hour; the equivalent cost in Ireland is three times higher, at €73. "
All else being equal I would rather make electricity in Ireland than rely on abroad. But how much of surcharge should we be willing to pay for purely local generated power? We get coal from Colombia for our coal plants. At three times the price we might be able to mine it here but we don't.
Colombia is relatively uncorrupt place compared to Saudi or the Russian. Which we also rely on for energy. But still not great. Countries could turn off the supply or up the price no matter what a contract says. Could we trust North African countries not to turn off the power at the whim of some dictator?
Columbia is 46th in the worlds most democratic countries index. This index seems a reasonable proxy for likelihood of keeping contracts. Russia is 124th and Saudi 156th. The North African countries Tunisia 54th, Morocco 96th, Algeria 115th. These seem presently to be a bit more trustworthy, contract wise.
Solar power seems so spread out that it would be hard for a dictator to corner the marker and increase the price drastically. There is just more desert and it is easier to put solar farms on there there is locations and the skills needed to mine oil and gas. As such I don't think the argument that we should have solar farms in Ireland even if they are much less efficient because of political stability issues in other countries as that compelling.