"More from the IEEE Smart Grid/Zpryme report on energy storage: top-rated benefits are meeting peak demand, improving power reliability and reducing costs. Hurdles: costs, deployment and a lack of standards. Lithium-ion will see the most demand over the coming five years. Respondents think North America will see the most growth in lithium-ion-based storage in that period. Where’s the money? Respondents think government-backed R&D, industry R&D and private/venture capital will provide it. (See last week’s column, "Electric Vehicles: Looking Back, Looking Forward, Part II," for a new public/private partnership on R&D for energy density in batteries.) "