So, with the UK also increasingly reliant on renewable energy, are we also at risk of more blackouts? This means that, where previously electricity generation could be concentrated in parts of the UK, electricity generation is now spread through the country. In the UK, electricity prices are mostly set by the most expensive form of electricity, called the marginal cost. Economically, the transition to renewable energy makes sense, creating over 14 million new jobs world-wide and providing green investment opportunities. For example, electric vehicles will be able to be charged through solar energy fed into domestic batteries instead of petrol.