San Mateo commission reviews Electrify San Mateo plan, hears broad public support and cost concerns

San Mateo’s Sustainability and Infrastructure Commission on May 14 heard a staff presentation and community feedback on “Electrify San Mateo,” a city project laying out policy pathways to replace natural‑gas appliances with electric alternatives in existing buildings.

The commission received an overview from Andrea Chow, the city’s sustainability analyst, and Ryan Gardner of Rincon Consulting on five policy pathways — business as usual (new construction reach codes and voluntary adoption), renovation reach codes (for example, replacing central air with reversible heat‑pump systems), a faster local ban on gas space and water heating (a 0 NOx path), commercial building performance standards, and a municipal “electric‑first” policy for city facilities.

Gardner framed the work as part of the city’s climate goals and said electrification focuses on “replacing natural gas‑fired equipment with electric equipment,” noting efficiency advantages: “What is really cool about heat pumps is they’re about 400% efficient.” He added that local modeling from regional providers shows household bill savings after electrification, saying, “the average household is gonna save about $20 a month when they switch to a heat pump water heater and about $20 a month when they switch to a heat pump HVAC.”

Why it matters

The plan aims to reduce greenhouse gases and indoor air pollutants that public‑health researchers link to childhood asthma and other conditions. Staff and the consultant emphasized that policy design must balance near‑term costs, possible electric‑service upgrades, and equity considerations so savings over time are not outweighed by unaffordable up‑front costs for renters or homeowners.

Major proposals and estimated impacts

- Business as usual: Continue and strengthen reach codes for new construction; staff estimated roughly 1,000 metric tons CO2e reduced by 2030 from stronger new‑construction codes.

- Renovation reach codes: Require electrified or high‑efficiency options at time of equipment replacement or for major remodels (examples include requiring a two‑way heat pump when adding or replacing central AC). Gardner said an AC→heat‑pump swap can be near cost parity with a conventional AC installation (PCE modeled an incremental rebate‑covered gap of about $1,500) and estimated this pathway could cut about 2,200 metric tons CO2e by 2030.

- Accelerated 0 NOx equipment requirement: Move faster than the Bay Area Air District’s regional timeline for phasing out gas space‑ and water‑heating equipment. Staff modeled the largest emissions reductions for this option — on the order of thousands of metric tons by 2030 — but warned it also carries the highest potential up‑front costs for HVAC retrofits and potential enforcement challenges.

- Commercial building performance standards: A benchmarking, retro‑commissioning and phased‑target approach for larger commercial buildings; staff described this as flexible and popular with commercial stakeholders, but slow to produce deep 2030 reductions because of the time needed for benchmarking and staged improvements.

- Municipal electric‑first policy: Require the city to replace municipal gas equipment with electric alternatives at time of replacement, with infeasibility exemptions. Staff estimated modest municipal emissions reductions but highlighted the policy’s leadership value.

Costs, grid impacts and supports

Staff and the consultant described typical cost ranges discussed in outreach and modeling: heat‑pump water heaters averaged about $6,000 before incentives, with Peninsula Clean Energy rebates and a federal tax credit potentially reducing out‑of‑pocket cost; comparable gas water heaters in the database used were about $2,800. For HVAC, staff cited average installed costs near $18,000 for a heat‑pump HVAC system and noted incentives can cut that, but the incremental cost versus a furnace can be significant. Staff cautioned that some retrofits could trigger electrical panel or service upgrades; they cited a UCLA‑based estimate that roughly 5–6% of residential buildings may require panel upgrades (higher in lower‑income buildings in older neighborhoods).

Gardner said demand increases from building electrification will be manageable alongside grid planning, but that transportation electrification remains the larger driver of future peak demand. He and staff highlighted Peninsula Clean Energy (PCE) services — from do‑it‑yourself resources to a full concierge installation program and rebates — as a major local support for residents and building owners.

Public comment and stakeholder positions

Speakers during public comment strongly endorsed the program but differed on speed and enforcement. Members of a local coalition, including Michelle Hudson (volunteer, 350 Silicon Valley — San Mateo Climate Action Team), Zach Scott (tenth grader, Aragon High School), and Terry Whitehair, urged the commission to back all five pathways and emphasized the urgency of deeper reductions. Hudson said the group “support[s] all 5 options” and noted the 0 NOx standard as among the most impactful in the consultant’s modeling.

Sierra Club and affiliated speakers urged equitable implementation and flagged the value of PCE’s free or subsidized installation programs for income‑qualified households; Dasha Leeds (conservation coordinator, Sierra Club Loma Prieta chapter) said, “Heat pumps can easily replace central AC units without requiring electrical upgrades,” and urged the city to pursue policies that align with the Bay Area Air District timeline.

Other commenters raised reservations. Fernando Peña (San Mateo County Association of Realtors) said his members supported electrification generally but opposed local mandates, warning that some seniors, renters and people on fixed incomes could struggle with upfront costs. Another commenter (identified as “TJ”) expressed skepticism about aspects of the climate science and raised questions about utility structures and costs; commissioners and staff responded by citing the technical analyses, existing incentives and state/regional regulatory timelines.

Commissioner feedback and next steps

Commissioners broadly supported advancing the study while asking staff for more contractor and community outreach, clearer hardship or exemption language (for emergency, small or constrained renovations), and options for city or regional financing to reduce up‑front costs for the “missing middle.” Several commissioners urged the city to staff and fund implementation steps (technical assistance, potential permit streamlining and a dedicated program manager) if the council moves forward with binding standards.

Chair and vice‑chair comments emphasized a preference for aligning with regional rules where practical (for clarity and enforcement) while also reserving the option to accelerate local timelines for some equipment categories. Andrea Chow said staff will compile the commission’s feedback and public comments for a staff recommendation to City Council; the presentation materials and next steps were scheduled to go to council in mid‑June.

Ending

The commission did not adopt an ordinance at the meeting. Commissioners directed staff to return with more detailed ordinance language, options for hardship/exemption criteria, contractor engagement results and a financing/rebate implementation plan ahead of any City Council action.