a report from Vice Mayor Jan Devereux, Chair of the Transportation & Public Utilities Committee, for a public hearing held on June 24, 2019 to discuss the future electricity needs of the Kendall Square area and progress toward identifying an alternate, viable location for a new substation other than the proposed site on Fulkerson Street

ENERGY Attachment A EVERSSURCE presented to June 25, 2019 City of Cambridge Eversource Update Transportation and Public Utility Committee

ENERGY EVERSEURCE substation? address load needs? or expand an existing at existing property to Is there room to enhance Can we add a transformer scale level? transformer)? available property. solve the load issue at a utility- Can we exchange a transformer Review existing equipment and to get more capacity (i.e. larger Are there other creative ways to The anticipated customer demand for addressed by solar, energy efficiency or electricity in Cambridge can not be solely demand response programs. -no space needs? EVERSEURCE evardle or set mat equipment. Prospect Street - very Imted space. enery grown camerage te another transformer at this site Putnam -existing plans to add furthest from load pocket. North Cambridge. - Limted capacity. Reviow of expansion capacity at existing locations: Can the system operate safely at equipment or transmission line? Can we work with what we have? planning confers to see if a system peak load with the loss of a piece of reconfiguration can address capacity Seeing growth, system engineers and New infrastructure needed to serve the community's energy needs Meeting Load Growth - Existing Substations by developers. electric needs. continually evaluate Eversource planners These are confirmed as electrical, economic and other data and to project Electric System Planning work orders are submitted

N ENERGY ENERGY EVERSEURCE EVERSEURCE LEGEND 2020 energy needs in Cambridge schedule runs the risk of not completing in time to meet summer With the additional four months added to the BZA process. project 2019 BZA hearing held on May 16 was continued until September 12. new fence and gate. enhanced sound attenuation. upgraded landscape pantings and shifting transformer 44 from the property line into the parcel. Project was modified based on community feedback including system upgrades transformer and associated equipment. including distribution Enhance the existing Putnam Avenue Substation with a fourth New infrastructure needed to serve the community's energy needs Meeting Load Growth - Putnam Avenue Potential generator temporary locations for deployment to summer 2020. handle loads in One additional transformer will not solve the Delays in the permitting process are impacting projected in service date. Contingency plans entire load need. underway to ensure peak load is met. Available space. Example: Add transformer to address load / Adequate Transmission Supply. Proposed Putnam Avenue Project / Near load pocket. V Shorter permitting process via local zoning.

ENERGY EVERSSURCE EVERSEURCE Initial route engineering and building concepts developed Cambridge Meets forecasted need capability Enhances system reliability and distribution circuits Will include transmission and electric substations Cambridge, Putnam and Brighten connection points near existing Eas: Interconnected system requires the electric system: Proposed substation must connect to Connecting to the Electric System Proposed Substation Requires Circuit Routes eliminated Routes with obvious flaws are Routing assessments considered concurrently during parcel review. EVERSEURCE available parcels. Despite significant effort, Colliers defines search area. System planning and substation engineering determine needs at Real estate search set out to find new facility, calculates parcel size, Technology Square area. Real Estate conducted search of potential properties on the parcel 40,000 square foot or larger for a future substation in East Cambridge : market. Initial efforts found no available properties. potential properties not actively on the market, but where owners may be open to a potential sale. Fifteen (15) potential locations identified. eight (8) of which met some, but not all. of Eversource's criteria. Planning/Engineering evaluated these eight. eventually determining 135 Fulkerson St. to be the only viable option. considering parcel size, proximity to load and availability. • November 2014 - System Planning engaged Eversource Real Estate to identify a Cambridge LLC. • March 2015 - Real Estate engaged broker Colliers International to conduct search of requirements as a potential alternative to 135 Fulkerson and found no parcels that met our parcel search of potential off-market properties. • June 2016 - Purchase and sale agreement for 135 Fulkerson St. signed with 135 was unable to identify any other potential alternatives that met the criteria. • January 17,2017 - Property purchase closed • April, 2019 - Eversource conducted a refreshed search of properties on the market • April-May, 2019 - Eversource reengaged Colliers Internatical to perform another Proposed Substation Site - Real Estate Search Historical Timeline and Consideration Criteria substation. system planning System Planning - Building a system, not just a substation. investigates building new If no way to utilize existing property to solve load need,

Kennedy Longfellow SprinSchool ENERGY Ave Michael Way Fulker son St Memorial Way cueiros 135 F Ikerson Stre EVERS-URCE Cornelius Way Charles St 3. 0 Bright Horizons at Kendall Square ndmark's Kendall juare Cinema Bent St Fulkerson St Ironwo ware Roge Pharm Google nagery ©2019 Google, Map dat Project New construction so facade can be customized to almost any design. Example: Construct New Substation process. Proposed Fulkerson Street • Land mass meets size requirements. * Longer, more involved permitting • Near load pocket. • Willing seller.

ENERGY Ave de Lafayette EVERSEURCE Google Barry's Bootcamp 82-92 Essex St Parking Robust / comprehensive solution = Kingston substation equivalent. Hyatt Regency Boston НП ГІ ANTH approximately two Seafood equivalent. Way substations or Longer term solution = EVERS-URCE East Cambridge Substation Size / Scale Near term solution = one existing substation or equivalent. additional transformer at an

ENERGY EVERS-URCE Google brick and concrete facia, vent panels Façade includes g0-92 Essex St Parking High Street, Boston ПІ 7 РА LA AT TI Le Gala Har Grot simulated windows, clock. Façade includes brick facia, Kingston Street, Boston and concrete foundation. perforated metal panels Façade includes Boston Seafood Way Substation, Substation façade examples Flexible Design, Fit the Surroundings

ENERGY EVERSEURCE building providing a physical security barrier. building. the communities where we all live and work. including applicable fire suppression systems at key elements of the Any proposed substation in East Cambridge will be housed in a secure Safety is of the utmost importance for our employees, our neighbors and We incorporate the highest levels of safety features into building designs, Substation Safety

ENERGY EVERSEURCE Begin project construction. associated conditions. project and if approved, any issue a decision on the proposed After 12-18 months, the EFSB will project. hearings on the proposed EFSB will hold public comment EFSB has a statutory mandate to implement the policies of G.L. c. 164, § § 69J-69Q to Eversource must demonstrate that we have considered a reasonable range of practical EFSB is required to review alternatives to planned projects, including "other site locations." provide a reliable energy supply for the Commonwealth with a minimum impact on the project and siting alternatives and that the proposed facilities are sited at locations that minimize costs and environmental impacts while ensuring supply reliability. environment at the lowest possible cost. Siting Board and the Department of Public Utilities. As a regulated utility, Eversource must seek project approval from the Energy Facilities Regulatory Approval Process be filed with the EFSB. After designs and routes have been vetted, project to

ENERGY EVERS-URCE QUESTIONS ANY Questions?

10 ENERGY EVERSEURCE wwww.eversource.com Transmission Projects [email removed] For more information about Questions? Contact Eversource [phone removed] ENERGY EVERS-URCE [email removed] Project Manager Community Relations Todd Lanham Project Hotline Email: [email removed] Email: [email removed] Email: [email removed] Siting & Construction Services [phone removed] [phone removed] Joe Mayall Annemarie Walsh [phone removed] [phone removed] Contact Information