Liberty Lake planners briefed on 2022 greenhouse‑gas inventory; buildings and transport are top targets

Liberty Lake — Consultants on Wednesday presented a greenhouse‑gas inventory and draft reduction goals to the Liberty Lake Planning Commission, reporting about 18,000 metric tons of carbon dioxide equivalent in 2022 and identifying building energy and passenger vehicles as the largest local emission sources.

Maddie, the GHG analyst on the consulting team, summarized the inventory: “Local emissions for Liberty Lake totaled about 18,000 metric tons of carbon dioxide equivalent. The vast majority of those, about 62%, came from building energy,” she said, and roughly 25% came from transportation energy, primarily passenger vehicles.

Why it matters: Washington Department of Commerce requires a GHG subelement in the comprehensive plan that shows reductions in total emissions and per‑capita vehicle miles traveled and prioritizes measures that benefit vulnerable communities. The consultants modeled the effect of state policies and local measures to estimate Liberty Lake’s pathway toward the Commerce net‑zero guidance.

The presentation reviewed state‑level policies factored into the projections: the Washington Clean Energy Transformation Act (phasing electricity emissions reduction), the Clean Buildings Performance Standard (building efficiency), a clean fuel standard for transportation fuels and the state requirement that new car sales move to zero‑emission vehicles. Consultants said these statewide actions already reduce Liberty Lake’s projected emissions substantially; remaining local opportunities are mainly building efficiency and electrification, land‑use and transportation measures to reduce VMT, EV infrastructure for multifamily and fleets, and waste‑stream actions including methane capture at wastewater facilities.

Draft local goals presented include encouraging renewable energy and efficiency in buildings (retrofits at time of replacement, rooftop solar and battery storage), land‑use changes and active‑transportation investments to reduce vehicle miles traveled, expanding EV charging for multifamily and destinations, exploring renewable diesel for heavy equipment, and reducing and managing waste with targeted campaigns and methane capture at the wastewater plant.

On implementation and timing, consultants and staff said the GHG subelement would be returned to the Planning Commission on June 25 with full policies and calculations, forwarded to city council July 1, and submitted to Commerce for preapproval on August 15. Miller said the resiliency subelement will follow after the GHG work is submitted for Commerce review.

Questions from commissioners focused on measurement and implementation: how VMT is measured (regional models and cell‑data inputs used by SRTC), challenges of installing EV charging at existing multifamily buildings, and the need to consider lifecycle costs and grid capacity when evaluating building electrification and rooftop solar. Staff noted grants and state programs as possible funding sources and emphasized cost‑effectiveness by timing retrofits to natural equipment replacement.

Ending: Staff said they will refine goals and policies with CPAT and public input, hold outreach events (clean‑energy town halls and Firewise training) and return a full GHG subelement for commission review in late June, ahead of council review and Commerce submission.