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Green Mountain Power (GMP), Vermont’s largest electric utility, contracted with Solari to design, write, and edit a number of energy-related reports.

To date, we have worked on three projects for the utility. We also collaborated with Daymark Energy Advisors on both IRPs:


2011 Integrated Resource Plan (IRP) for Electricity

This 2011 resource plan continued the foundation set during the 2007 IRP process: scenario planning, a robust generation mix incorporating greater amounts of renewable generation, and a report that addressed the needs of a growing audience. Again, we worked closely with Daymark Energy Advisors.

The 2011 IRP began to incorporate new power supply acquisitions that substantially altered the utility's resource mix—a change that represented almost 40% of the utility's generation. Planning for the next five years was complicated by the impending expiration of two PPA that together comprised 79% of baseload generation. Our short-term planning revolved around three possible future scenarios: Muddling Along, Economies of Efficiency, and Gas is Greener. The IRP laid out a plan for diversifying the generation mix, including the addition of more variable renewables (mostly small solar installations) to reduce the percent of fueled generation.

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Solar System Impact Study

This System Impact Study describes the review process that Green Mountain Power conducted to ensure that the installation of a 2 MW solar generator met the thirteen Fast Track operational requirements imposed by the Vermont Public Service Board.

The study cites the additional analyses and upgrades still to be performed, as well as the recommended upgrades and settings to be implemented for the solar generator to meet these operational requirements. Also discussed is the necessity to first install the generator on a Central Vermont Public Service circuit, and then move it to a GMP circuit.

We designed and edited this System Impact Study that described the solar installation, its interconnection options, and their impact on the circuits.

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2007 Integrated Resource Plan (IRP)

The 2007 IRP planning began the gradual increase of renewable resources into the GMP generation mix to fill an emerging gap between load and supply. A main purpose of this IRP was to work closely with state government, the Vermont Legislature, and energy agencies (Vermont Public Service Board and the Department of Public Service) to engage the public in a dialogue about the increasing amounts of solar photovoltaics and wind.

For the first time, the IRP process included scenario planning. We developed the resource plan based on four potential future scenarios: Green Focus, Green Growth, Fortress America, and Back to Business. Some of the factors comprised in these scenarios could be directly influenced by the utility, so planning placed a greater emphasis on community involvement. Integral to the resource planning was an assessment of six portfolio strategies with three variations each applied to each scenario to best develop a recommended strategy and generation portfolio.

We worked closely with GMP energy planners and analysts from Daymark Energy Advisors. The final 2007 IRP raised the bar for the design and writing of their reports.

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