Category Archives: Energy Storage

More Detail on the Massachusetts DG Interconnection Docket

On Monday, August 19, the Massachusetts Department of Public Utilities (“DPU”) provided additional information on the timing, process, and scope of its investigation into DG interconnection.  The full memorandum from the Hearing Officer is here.  This procedural update follows the July 18 technical conference, which we summarized here.  A few key points from the memorandum:

  • Three additional technical conferences have been scheduled in the docket for October 3,…
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DPU Technical Conference Addresses Issues Related to DG Interconnection Tariff and National Grid “Cluster Study”

Distributed generation (DG) projects across the Commonwealth have been stalled in the midst of the “Cluster Study” impacting National Grid’s service territory in central and western Massachusetts. National Grid describes the study’s purpose as determining the impacts on the transmission system of interconnecting over 900 MW in DG projects—mostly solar—to its distribution system. National Grid says the study will be completed by March 2020.… More

Massachusetts DPU Opens Docket on DG Interconnection

On May 22, 2019, the Massachusetts Department of Public Utilities (“DPU”) opened a new docket (D.P.U. 19-55) to investigate the interconnection of distributed generation (“DG”) in Massachusetts.  (And yes, the DPU intends to include energy storage interconnection in this docket despite defining DG as “technologies that generate electricity”.)

While complaints about costs, delays, and increased volume of interconnection applications have been growing,… More

Sunrun’s Capacity Supply Obligation in ISO-NE Forward Capacity Auction Signals the Beginning of a New Era for the New England Grid

Our client, Sunrun, the nation’s leading home solar, battery storage and energy services company, won an historic bid to deliver home solar and batteries as a capacity resource in ISO-NE’s recent Forward Capacity Auction (“FCA”), for the capacity commitment period June 1, 2022- May 31, 2023.  Sunrun’s participation in New England’s capacity market is the first time in the country that home solar and battery storage has directly participated alongside traditional generation resources in a wholesale capacity auction.… More

Massachusetts DPU Issues Decisions on Energy Storage and Capacity Rights

On February 1, 2019, the Massachusetts Department of Public Utilities issued two long-awaited orders in docket D.P.U. 17-146. The orders address a number of issues related to pairing energy storage systems (“ESS”) with net metering facilities and the rights to the capacity associated with net metering and SMART facilities. There are too many issues in these orders to address each fully here, but below are some high-level highlights.… More

Is an Energy Storage System a Generating Facility?

As more energy storage projects are developed in Massachusetts, laws and policies may need to catch up. Energy storage can provide many benefits and play many roles, but it does not always fit neatly into familiar categories, which are sometimes embedded in the background legal landscape. A recent petition at the Massachusetts Energy Facilities Siting Board (“EFSB”) brings this issue to the fore.

The EFSB has jurisdiction over transmission lines,… More

SMART is Open!

November 26th was a big day for solar energy in Massachusetts.  As promised, the Massachusetts Department of Energy Resources (“DOER”) opened the application portal for the long-anticipated SMART Program.  Applications received between November 26th and November 30th will be considered to have been received at the same time.  Starting on December 1st, applications will be reviewed on a first come, first served, basis.

Also on November 26th,… More

IRS Issues PLR Approving Battery Storage for 25D Tax Credit When Integrated with Solar

The Internal Revenue Service has released a redacted copy of its private letter ruling 201809003 in which it concluded that a battery energy storage system charged 100% from an onsite solar system is eligible for the individual tax credit under Section 25D.

In the Letter Ruling, the Service reasoned that the “Battery meets the definition of a “qualified solar electric property expenditure” under § 25D(d)(2) of the Code” based on the taxpayer’s representation that “all energy that is used to charge the Battery can be effectively assured to come from the Solar Energy System” to which it would be interconnected.… More