『[Part 1] Eric Bosworth - Manager of Clean Technology at Eversource』のカバーアート

[Part 1] Eric Bosworth - Manager of Clean Technology at Eversource

[Part 1] Eric Bosworth - Manager of Clean Technology at Eversource

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 Hi folks, We are back! This week, we’re bringing you part 1 of our conversation with Eric Bosworth!Eric is the Manager of Clean Technology at Eversource, his journey spanning oilfield engineering, utility infrastructure, and emerging decarbonization technologies. Currently, Eric leads efforts to pilot and scale alternatives to fossil gas - including hydrogen, carbon capture, and (most relevant) community-scale geothermal.He draws on field experience in oil and gas, system planning expertise from utility engineering, and a customer-first approach to identify and deploy the best-fit solutions across Eversource’s portfolio. Most notably, Eric led the development and execution of the Framingham geothermal pilot - one of the first utility-owned thermal energy networks in the United States.🧠 Highlights* Utility leadership in geothermal: Eversource demonstrates how utilities can leverage existing gas infrastructure expertise to deploy geothermal networks.* Framingham pilot as blueprint: A 140-customer, closed-loop system built within a mile-long loop highlights the viability of utility-owned thermal networks.* Permitting, community buy-in, and modeling: Success hinged on shallow bedrock, EJ-community alignment, and relentless community outreach paired with rigorous engineering modeling.🔧 Eric’s Journey into Geothermal* Started as a field engineer with an international oilfield services company Schlumberger (now SLB).* Transitioned back to the U.S., worked on gas engineering at Eversource.* Volunteered for clean tech efforts, leading Eversource's geothermal pilot.* Past drilling experience proved invaluable for utility-scale geothermal deployment.🏛 Role at Eversource: Clean Technology Strategy* Evaluates a suite of decarbonized solutions: geothermal, Renewable Natural Gas (RNG), hydrogen, carbon capture.* Applies a customer-centric framework to identify the right solution:* Geothermal fits for heating/cooling needs (residential, mixed-use, commercial).* Molecule-based solutions like hydrogen/RNG better suit high-heat industrial customers.🧪 Inside the Framingham Geothermal Pilot* 140 customers across 36 buildings in Framingham, MA.* Closed-loop system with 90 boreholes in a ~1-mile loop.* Launched via a 2019 gas rate case (a utility-regulator process to approve capital projects).Why Framingham?* Environmental Justice community - aligned with equity goals.* Shallow bedrock (~30 ft) - reduced casing costs and improved heat transfer.* Strong community partner - city support and diverse building mix (residential, commercial, housing authority).📊 Site Selection + Modeling Process* Screening: Load mix, street space, depth to bedrock, customer interest.* Test boreholes post-selection to verify thermal properties.* Thermal network design:* Borehole spacing (20-25 ft) and placement modeled for loop stability.* Minimized thermal drift across customers in the network loop.* Tools used (via external Professional Engineering firm):* Borefield performance simulators* Transient energy modeling for pipes* Building load analysis🏗 Construction & Bidding ExecutionBidding Strategy:* Split into 3 scopes:* Drilling* Loop infrastructure (high density polyethylene (HDPE) pipe, mains, pump house)* Building conversion (heat pumps, ductwork, electrical)* Flexibility: Bidders could propose on full or partial scopes.* Winning bidder was a long-time gas pipeline contractor — installation process nearly identical to gas.Operations Notes:* Pipe used is standard HDPE, just black with “geothermal” instead of yellow gas striping.* General Contractor model used: prime contractor oversaw subcontractors for drilling, instrumentation, etc.📣 Customer Outreach StrategyChallenges:* Knocking on doors as a utility = skepticism.Strategy:* Repurposed internal sales and marketing team to act as geothermal outreach reps.* Delivered:* Multilingual fact sheets, door hangers, community meetings and engagement.* Check out our podcast with Jen Wakeland to learn more about how geothermal energy can engage well with local communities.* Hosted Q&As to build trust and clarity.* Leveraged city of Framingham as a key ally for legitimacy and communication.* You can also see their website here.📝 Permitting in Massachusetts* Closed-loop geothermal = low regulatory friction.* Approval via city council and conservation commission.* No extensive state or environmental hurdles.* Easier than other states like NY, which previously required mining permits for deep drilling.🛠 Lessons for Developers & Financiers* Utilities can deploy geothermal using existing gas pipeline teams - shared skillsets and tooling.* Shallow bedrock drastically reduces costs - site selection must prioritize geology.* Community trust must be earned - requires persistent, multi-channel communication.* Permitting varies widely by state - closed-loop systems often face fewer barriers.* Thermal network design is nontrivial - must model pipe loss, load variance, and peak ...

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