Maine community solar procurement bill, LD 1444

This week a committee of the Maine state legislature is scheduled to hold a public hearing on a bill that would direct state regulators to enter into long-term contracts to procure 120 megawatts of large-scale community solar distributed generation resources by 2022.  While Maine law currently allows some community-scale solar development, LD 1444, An Act Regarding Large-scale Community Solar Procurement, would create new structures geared toward state-sponsored long-term contracts and could open the door to broader ownership of or participation in community-scale solar in Maine.

If enacted into law as drafted, the bill would direct the Maine Public Utilities Commission to hold a series of four annual competitive solicitations by January 1, 2022.  Each solicitation would seek to procure 30 megawatts of large-scale community solar distributed generation resources.

Through an initial solicitation to be held by March 1, 2018, the Commission would set a uniform clearing price or "standard solar rate" for all awarded bids in the initial procurement.  Subsequent procurements would be subject to a declining block contract rate, under which the Commission would reduce the rate relative to the previous procurement by up to 3%.  But if the Commission were to conclude that a subsequent solicitation was not competitive, no bidders may be selected and the capacity available in that solicitation will be deferred to a subsequent solicitation.

Any resource selected for contracting would be offered a standard contract for a term of 20 years at the specified contract rate.  The resources' counterparty would be a "standard buyer" whose mission would be to "aggregate the output of the portfolio of distributed generation resources procured pursuant to this chapter and sell or use the output of these resources in a manner that maximizes the value of this portfolio of resources to all ratepayers."  Initially, the bill designates each investor-owned transmission and distribution utility as the standard buyer for its own service territory, but it would allow the Commission to designate another entity if doing so is in the best interest of ratepayers.  The benefits and costs of the procurement, shall be tracked and reviewed annually, and any gains would be allocated to from ratepayers of the project's host utility -- just as any losses would be recovered from those ratepayers.

On the project side, LD 1444 would establish a sponsor/subscriber model for large-scale community solar distributed generation resources.  A project sponsor would own or operate the resource.  A customer could subscribe for a proportional interest in such a resource, sized to represent at least one kilowatt of the resource's generating capacity.  Several additional requirements include:

• The total expected annual value of all of a customer's subscriptions must not exceed 120% of the customer's most recent annual electricity bill. 
• At least 50% of the subscriptions to a large-scale community solar distributed generation resource must be for 25 kilowatts or less, unless a municipality accounts for more than 50% of the subscriptions to a large-scale community solar distributed generation resource.
• A municipality may not account for more than 70% of the subscriptions to a large-scale community solar distributed generation resource.

Once under contract, a project sponsor and subscribers receive the contract rate for the output of a large-scale community solar distributed generation resource that is fully subscribed. For any portion not subscribed, the project sponsor receives the wholesale rate.  Each subscriber will be allocated a bill credit based on its percentage interest of the facility's total production for the previous month.  These credits must be applied against the subscriber's monthly electricity bill.

LD 1444 is scheduled for a public hearing before the Committee on Energy, Utilities and Technology on April 27, 2017.

Maine solar legislation released

The Maine legislature has printed a bill whose enactment would reshape the state's solar energy laws.  The bill, An Act To Modernize Maine's Solar Power Policy and Encourage Economic Development, has been numbered as LD 1649.  It would replace a billing treatment called net metering with a series of long-term contracts and utility procurement orders.

Solar photovoltaic panels on the roof of Gallagher's Auto Parts, in Patten, Maine.

Under net metering or “net energy billing,” an electric utility invoices a customer with solar panels based on the difference between the customer's energy use and the solar project's output.  If the generator output exceeds monthly usage in any billing period, the customer earns kilowatt-hour credits that can be banked and netted against future usage.  The bipartisan non-governmental organization National Conference of State Legislatures has noted that "Net metering policies have facilitated the expansion of renewable energy through on-site generation, also known as distributed generation."

But a 2015 Maine legislative resolve directed the Public Utilities Commission to convene a stakeholder group to consider alternatives to net energy billing, largely in the hopes of helping more consumers connect with solar power.  As part of that case, the state's Office of Public Advocate proposed a structure where individual solar projects would enter into contracts to sell solar power to their local utility.  While stakeholders developed consensus around exploring the concept, there was not uniform agreement around whether it should immediately replace net metering, or whether the new concept should operate "side by side" with net metering for some test period.

The bill now printed as LD 1649 largely reflects the contract-based, solar standard buyer proposal.  It would direct the Public Utilities Commission to enter into twenty-year contracts for the procurement of 248 megawatts of solar energy between 2017 and 2022.  The bill allocates 60 megawatts (24%) to grid-scale solar distributed generation resources; 45 megawatts (19%) to large-scale community solar resources; 25 megawatts (10%) to commercial and industrial resources; and 118 (47%) megawatts to residential and small business resources.  This would represent a significant expansion of solar capacity in Maine compared to what has been developed to date.

Under LD 1649, customers could seek contracts to sell solar power to a standard buyer (the utility) at prices set by the Public Utilities Commission. The standard buyer's stated role is to purchase the output of these distributed generation resources, aggregate the portfolio of resources procured, and sell it into the relevant New England markets. 

Consumers with projects up to 250 kilowatts in capacity could have two options.  The first is to sell the project's entire output to the utility under a contract, and buy all the customer's electricity requirements back from the utility in a separate transaction.  This is sometimes described as a "buy-all, sell-all" structure.

The second option is to use onsite generation to first offset electric consumption, and sell any excess electricity.  This would allow hourly offsetting of onsite load, but would not allow customers to carry forward monthly credits for excess production that could be used to offset future load.  This differs from net metering under Maine's current regulations, which measure net energy use over an entire month billing period, and carry credits forward for up to 12 billing months.

This contracting structure would effectively replace net metering. No new customers could participate in net metering once the new rules take effect.  Those residential and small business customers who already net meter their loads against a distributed solar project would face a choice: either seek a long-term contract under the new program, or elect to net meter for 12 more years.    

The bill would also largely eliminate Maine's policy of virtual net metering, which has allowed customers to net meter load at one site against a solar project located elsewhere in the same utility's service territory.

As of late on March 9, LD 1649, An Act To Modernize Maine's Solar Power Policy and Encourage Economic Development, had not yet been referred to committee, nor a public hearing scheduled.