California's plan calling for a massive amount of energy storage poses challenges for utilities that would be required to implement it. Mark MacCracken, CEO of Calmac, a manufacturer of thermal energy storage systems, discusses the technology options available to utilities in this podcast interview with Lisa Cohn of EnergyEfficiencyMarkets.com. "There will be a big learning curve," he says. "We'll see some test projects." Utilities will experience multiple benefits with energy storage under the plan. For example, they could use one energy storage device to help them address power quality and arbitrage.