Amid all this disruption, Britain and other countries have created a smorgasbord of incentives to power providers to keep the lights from going off. Neil Hutchings, director of power systems and storage at Anesco, the small British company that supplied Mr. Beatty’s battery, said there were no fewer than 14 ways that it could make money. “The real secret is how to pick out the best combination,” he said. Independent journalism.More essential than ever. Subscribe to the Times While he said the batteries, which are imported from China, were improving, the real key was in the electronic controls that allowed them to react almost instantaneously to the needs of the grid.