Transportation tops Maine greenhouse gas emissions

Cars, trucks and other vehicles used for transportation were responsible for most of the greenhouse gas emissions in Maine in 2017, according to a report released by state environmental regulators this week. Maine's transportation sector has emitted more greenhouse gases than any other sector every year for at least two decades, according to state data, and is the only tracked sector whose greenhouse gas emissions have increased since 1990.

A 2003 state law established a series of greenhouse gas reduction goals for Maine. The law set a target to reduce greenhouse gas emissions within the state, by 2010, to the levels of emissions recorded for 1990; to reduce emissions to 10% less than 1990 levels by 2020; and in the long term, "reduction sufficient to eliminate any dangerous threat to climate." The 2003 law required the Maine Department of Environmental Protection to issue a report every 2 years on progress toward these goals.

In 2019, the Maine State Legislature enacted An Act To Promote Clean Energy Jobs and To Establish the Maine Climate Council, which replaced these goals with requirements that Maine reduce its gross annual greenhouse gas emissions to at least 45% below the 1990 gross emissions level by 2030, and to at least 80% below 1990 levels by 2050. The 2019 law requires the Department of Environmental Protection to adopt rules to ensure compliance with these levels, and authorizes the Department of Transportation to adopt similar rules.

On January 13, 2020, the Maine Department of Environmental Protection issued its Eighth Biennial Report on Progress Toward Greenhouse Gas Reduction Goals. The report shows that Maine’s electric sector has largely been decarbonized, while transportation and heating remain laggards.

As it has for decades, transportation dominates Maine’s greenhouse gas emissions at 54% of the total, because nearly all vehicles burn gasoline or diesel. Homes are the second-largest emitters, contributing 19% of the total, mostly by burning oil for heating. Commercial businesses (11%) and industrial businesses (9%) contribute relatively smaller shares.

Meanwhile electric power generation contributed just 7% of Maine’s CO2 emissions in 2017 (down from 9% in 2015). As Figure 7 from the Department's report shows -- reproduced below -- no sector has cut its carbon emissions by a greater percentage than the electricity sector, while transportation stands out for its dominant and growing share of emissions.

Figure 7, Maine Department of Environmental Protection Eighth Biennial Report on Progress Toward Greenhouse Gas Reduction Goals

The 2019 legislation also created the Maine Climate Council to advise the Governor and state Legislature on ways to mitigate the causes of, prepare for and adapt to the consequences of climate change. Governor Janet Mills also issued an executive order calling for Maine to be carbon neutral by 2045. Achieving these goals will require substantial focus on decarbonizing Maine's transportation sector.

Massachusetts community microgrid projects solicited

A Massachusetts economic development agency focused on clean energy has launched a program seeking to catalyze the development of community microgrids throughout Massachusetts.

Generally speaking, a microgrid is a localized power grid that can disconnect from the traditional grid to operate autonomously.  According to the U.S. Department of Energy, a microgrid's ability to operate while the main grid is down means microgrids can strengthen grid resilience and mitigate disturbances, while enabling faster system response and recovery once reconnected to the main grid. Microgrids can also support flexibility and efficiency, by enabling the integration of growing deployments of renewable and distributed energy resources like solar, and by reducing energy losses in transmission and distribution.
 
A "community microgrid" could be defined in several ways, but a typical definition focuses on a multi-user microgrid providing electrical and/or thermal energy to multiple consumers, integrated with and supported by the local community, relevant utilities, and building or site owners.  As with other microgrids, a community microgrid implementation could reduce energy costs and reduce greenhouse gas emissions, while providing increased energy resilience.

While federal support for microgrids has existed for years, states are now becoming active in exploring how microgrids can help meet society's energy needs and policy goals. Massachusetts is one hotbed of interest in microgrids, and a recently announced program could help stimulate the microgrid industry. The Massachusetts Clean Energy Center’s (MassCEC) Community Microgrids Program anticipates providing about $75,000 in funding to support each of 3 to 5 prospective community microgrid projects with the following characteristics:

• Are community, multi-user microgrids (as opposed to single owner or campus-style microgrids) located in Massachusetts -- but MassCEC will consider proposals from Applicants with an existing campus wishing to extend the microgrid to additional parties outside of its borders;
• Demonstrate significant potential to reduce greenhouse gas emissions through the integration of energy efficiency, Combined Heat and Power (“CHP”), renewable energy systems, electric and/or thermal storage technologies, demand management, energy efficiency, and other relevant technologies;
• Have the active and engaged support of the local utility (either investor-owned or municipal light plants) and other relevant stakeholders;
• Encompass a public or private critical facility, including but not limited to schools, hospitals, shelters, libraries, grocery stores, service (gas) stations, fire/police stations or waste water treatment plants;
• Support the distribution system by addressing capacity concerns, providing black start capability, facilitating renewables integration, or providing other services that are meaningful to the local utility;
• Attract third party investment; and 
• Highlight Massachusetts-based clean energy/microgrid technology.

MassCEC is presently soliciting Expressions of Interest from groups interested in participating in feasibility assessments for community microgrid projects meeting its defined criteria.  According to MassCEC, respondents may include municipalities and their public works departments, electric distribution companies, municipal light plants, emergency services departments, owners of critical infrastructure such as hospitals and financial institutions, self-organized groups of commercial building owners, developers or any other actor that either owns property within a potential microgrid or can demonstrate that they represent stakeholders with the capability of developing a community microgrid.  Support from the local government and the relevant electric or gas distribution company is also required.

MassCEC says it intends its funding to support feasibility assessments to advance the selected microgrid projects through the early project origination stages, enabling them to attract third-party investment. Projects that produce a favorable feasibility assessment may then be eligible for additional technical assistance or grants for later stages of project development

Completed expressions of interest, including all required documentation, must be received by MassCEC by Friday, June 23, 2017 by 4:00pm. MassCEC anticipates awarding the first round of feasibility assessments in Q3 2017.