In recent years, Scotland has witnessed a steady increase of renewable energy capacity, with wind power being the main source of energy produced. Since last year, Scotland has witnessed a 14 per cent increase in renewable electricity, with a current capacity of 17.7 GW. Today, Scotland alone hosts 4,871 onshore wind turbines, while England hosts 2,025, Wales 1,012 and Northern Ireland 1,314. Just as roads can become obstructed by traffic during rush hour, the electricity grid also becomes congested. “The biggest cost of being off-grid is balancing,” says Mark Hull, chief technology officer at Community Energy Scotland (CES).