DC fast charging can make owning an electric car more convenient, but the cost of using it can be substantially higher than slower Level 2 AC charging. A new Massachusetts state law aims to address one of the main reasons why. It’s not so much the hardware cost or the siting, but the so-called “demand charges”—premiums charged by utilities…DC fast charging can make owning an electric car more convenient, but the cost of using it can be substantially higher than slower Level 2 AC charging. A new Massachusetts state law aims to address one of the main reasons why. It’s not so much the hardware cost or the siting, but the so-called “demand charges”—premiums charged by utilities…DC fast charging can make owning an electric car more convenient, but the cost of using it can be substantially higher than slower Level 2 AC charging. A new Massachusetts state law aims to address one of the main reasons why. It’s not so much the hardware cost or the siting, but the so-called “demand charges”—premiums charged by utilities…DC fast charging can make owning an electric car more convenient, but the cost of using it can be substantially higher than slower Level 2 AC charging. A new Massachusetts state law aims to address one of the main reasons why. It’s not so much the hardware cost or the siting, but the so-called “demand charges”—premiums charged by utilities…