WALTHAM, Vt. — In a new low-income development that replaced a trailer park here, rooftop solar panels sparkle in the sun while backup batteries quietly hum away in utility closets.
About an hour away, in Rutland, homes and
WALTHAM, Vt. — In a new low-income development that replaced a trailer park here, rooftop solar panels sparkle in the sun while backup batteries quietly hum away in utility closets.
About an hour away, in Rutland, homes and businesses along a once-distressed corridor are installing the latest in energy-saving equipment, including special insulation and heat pumps.
And throughout Vermont, customers are signing up for a new program that will allow them to power their homes while entirely disconnected from the grid.
The projects are part of a bold experiment aimed at turning homes, neighborhoods and towns into virtual power plants, able to reduce the amount of energy they draw from the central electric system. But behind them are not green energy advocates or proponents of living off the land. Instead, it’s the local electric company, Green Mountain Power.Continue reading the main story
Even as the Trump administration has broken with almost all the world’s nations by renouncing the Paris climate accord, the Vermont program offers just one example of the continuing efforts at the local level to rethink a largely carbon-based power system. The initiatives are driven by financial advantages as well as environmental ones.Continue reading the main story
Green Mountain’s chief executive, Mary Powell, sees the program here as the best way to please customers while making the system more environmentally and physically sustainable.
“Customers, especially in Vermont with the energy-independence values that people have, want to move more toward self-generation,” she said, seated in a bright orange modernist chair in a meeting area in the company’s open-plan headquarters near Burlington.
“The opportunity for us,” she added, is to lead the transformation of an electric system that depends on power sent along big transmission lines “to a community-, home- and business-based energy system.”Continue reading the main story
As a practical matter, the less electricity the utility pulls from the regional transmission system, especially at times of peak demand, the less it has to pay in fees, producing savings it can pass on to customers. One way it does this is by remotely controlling the batteries installed through its programs, drawing upon the stored energy as needed.
Recently, Ms. Powell said, Green Mountain used this method to take the low-income development here off the grid’s electricity supply for two hours, saving an estimated $275 in transmission costs while the homes were powered by solar panels or battery storage. The amount saved was small, but such savings could add up over a year if they were realized in enough locations.
The utility, owned by Gaz Métro, a leading natural gas distributor in Quebec, is also working to reduce its carbon dioxide emissions as part of the effort to slow global warming. In 2014, it became a B Corporation. That is a voluntary designation, requiring executives to take into account not just how decisions will affect profit and shareholders, but also how they will affect the public, generally defined as society or the environment.
As part of that mission, Green Mountain became the first utility to offer customers access to Tesla’s Powerwall home battery system when it was released in 2015. Now it is starting a new program, announced in May, that will offer the battery to as many as 2,000 customers for $15 a month over 10 years, or a one-time payment of $1,500. The package will include software and a Nest thermostat, which conserves electricity by adjusting temperatures to comings and goings as well as established routines.Continue reading the main story
The idea is that customers, especially when they have solar panels, heat pumps and electric vehicles, will be better able to monitor and manage their energy use. The utility, using Tesla’s software, will be able to call upon the stored energy in the combined batteries to help meet surges in demand, or to sell it on the wholesale market to help balance or smooth out fluctuations within the region.
The efforts have won plaudits from national green-energy advocates who see the utility as a leader in helping redesign the electric system, which is undergoing enormous changes as renewable sources of energy become more popular and other technologies give customers more control. Many utilities see such moves as an existential threat because their profits come mainly from getting a set rate of return that is factored into customer rates.
But Green Mountain Power has “figured out a way to do well and do good in the utility business and keep its regulators, investors and customers all happy at the same time,” said Dan Reicher, executive director of the Steyer-Taylor Center for Energy Policy and Finance at Stanford and a customer of the utility through a family home in Vermont. “That’s a big deal these days when the rest of the industry is talking about a death spiral.”
Ms. Powell, 56, grew up on the Upper West Side of Manhattan and attended a public high school focused on the arts. She came to the company in 1998 after turni