As critical infrastructure becomes an increasing target in both conventional and cyber warfare, countries are reassessing how vulnerable their national power grids really are. In tiny Israel the vulnerability is even more acute and the push for renewable energy is no longer just an environmental issue but a national security priority. Danny Denan, the CEO of GreenTops, told reporter Arieh O’Sullivan that more needs to be done to expand rooftop solar systems to reduce the risk of large scale blackouts during crises. (photo: Omer Fichman/flash90)

<p>As critical infrastructure becomes an increasing target in both conventional and cyber warfare, countries are reassessing how vulnerable their national power grids really are. In tiny Israel the vulnerability is even more acute and the push for renewable energy is no longer just an environmental issue but a national security priority. Danny Denan, the CEO of GreenTops, told reporter Arieh O&rsquo;Sullivan that more needs to be done to expand rooftop solar systems to reduce the risk of large scale blackouts during crises. (photo: Omer Fichman/flash90)</p>