SB 5727
In CommitteeSenate
Residential energy storage
Incentivizing grid-connected residential battery energy storage systems.
This status may be delayed. See Action History below for the latest updates.
How does a bill become law?
- Introduced: The bill is filed and assigned a number.
- Committee: A subject-matter committee holds hearings, takes public testimony, and decides whether to advance the bill.
- Floor Vote: The full chamber (House or Senate) debates and votes on the bill.
- Opposite Chamber: The bill repeats the committee and floor vote process in the other chamber.
- Governor: The Governor reviews the bill and decides whether to sign or veto it.
- Signed: The bill has been signed into law.
AI Analysis
This bill establishes a state-run incentive program to help Washington residents install grid-connected home battery systems, especially to support grid reliability during extreme weather and outages. It offers financial incentives—higher for low- and moderate-income households—and requires utilities to offer time-of-use rates or virtual power plant integration. Utilities receive tax credits to offset program costs, and the program runs from 2026 to 2036.
- Creates a state-administered battery incentive program for residential battery energy storage systems connected to the grid, available from July 1, 2026, to June 30, 2036.
- Requires utilities with over 100,000 Washington customers to run incentive programs; smaller utilities may join voluntarily.
- Sets income-based incentive levels: up to $765 per kWh for low- and moderate-income households, and up to $450 per kWh for other households, capped at 18 kWh per customer.
- Mandates that at least 40% of program benefits go to low- and moderate-income households, housing authorities, tribal governments, or nonprofit service providers.
- Requires utilities to offer either time-of-use rates (by July 1, 2026) or integrate batteries into a virtual power plant, ensuring customers benefit financially and utilities can use the systems for grid reliability.
- Provides tax credits to utilities for incentive payments and program costs, with a sunset of June 30, 2040, and requires performance reporting and audits.
- Requires income verification for low- and moderate-income applicants, and prohibits customer battery leases (must be owned or leased directly by the customer).
Who is affected
- Residential electricity customers — Customers who install qualifying residential battery systems and meet income requirements may receive up to $765 per kilowatt-hour of storage (capped at 18 kWh), reducing their upfront costs; those with higher incomes may receive up to $450 per kWh (also capped at 18 kWh).
- Electric utilities (light and power businesses) — Electric utilities with over 100,000 Washington customers must create and run battery incentive programs; smaller utilities may voluntarily participate. Utilities receive tax credits to offset incentive payments and program costs.
- Low- and moderate-income households — Low- and moderate-income households, especially those served by housing authorities, tribal governments, or nonprofit organizations, are prioritized—40% of program benefits must go to them—and may receive higher incentives.
- Battery system installers and equipment providers — Installers and equipment suppliers who partner with utilities to provide approved battery systems and services under the incentive program.
Pro/Con Analysis
Stronger case for benefits
Potential Benefits (5)
Low- and moderate-income households receive up to $13,770 in incentives (18 kWh × $765), significantly reducing upfront battery costs — this directly improves energy resilience and lowers long-term electricity bills for participating households, especially during extreme weather events.
FinancialPeopleRef: Sec. 4(1)(i); Sec. 3(3)(a)Virtual power plant integration and time-of-use rates improve grid reliability during peak demand and extreme weather, reducing the frequency and duration of outages — this benefits all customers, especially vulnerable populations who rely on electric medical equipment or heating/cooling.
Public SafetyPeopleRef: Sec. 3(2)(ii); Sec. 3(2)(a)Mandatory income verification by trusted third parties (housing authorities, tribes, nonprofits) ensures program integrity while protecting vulnerable applicants from predatory practices — this builds trust and reduces fraud risk without burdening applicants.
Public SafetyPeopleRef: Sec. 3(3)(b); Sec. 4(3)(a)Explicitly retaining environmental attributes for battery owners prevents utilities from appropriating clean energy credits, preserving customer rights and incentives for participation — this strengthens consumer autonomy in the evolving distributed energy landscape.
Rights & LibertiesPeopleRef: Sec. 4(4)The program creates demand for battery installers, electricians, and software developers supporting virtual power plants — while this may boost clean energy jobs, the 20% cap on expense credits and utility budget constraints may limit job growth to modest levels.
Business & EmploymentRef: Sec. 5(1)(b); Sec. 3(2)(ii)
Potential Concerns (5)
Low- and moderate-income households receive higher per-kWh incentives ($765 vs $450), but the 18 kWh cap and income verification requirements limit participation to households with modest energy needs and stable income documentation — many low-income renters, seasonal workers, or those without formal housing arrangements may be excluded despite the 40% benefit target.
FinancialPeopleRef: Sec. 4(1)(ii); Sec. 4(1)(i)The 20% cap on program expense credits and the 1.5% cap on total tax credits relative to 2022 power sales creates budget uncertainty for utilities, especially smaller ones with limited tax liability — this may discourage participation or lead to underinvestment in program infrastructure, reducing overall program effectiveness for all customers.
FinancialRef: Sec. 5(1)(b); Sec. 5(2)Mandating time-of-use rates or virtual power plant integration by July 1, 2026 may strain utility IT and customer service capacity, especially for smaller utilities, potentially leading to billing errors, delayed service, or reduced outage response capability during the transition period.
Public SafetyRef: Sec. 3(2)(a); Sec. 3(2)(ii)Prohibiting customer battery leases (Sec. 3(3)(c)) may reduce affordability for low-income households who rely on third-party financing models — while intended to ensure customer ownership, this could exclude those unable to pay $10,000+ upfront, undermining the program’s equity goals.
Rights & LibertiesRef: Sec. 3(3)(c); Sec. 4(1)(a)The 1.5% cap on tax credits tied to 2022 power sales creates a regressive fiscal effect: utilities with higher Washington sales (typically larger, investor-owned utilities) can claim more credits, while municipal utilities or cooperatives with lower sales may be unable to fully offset program costs — potentially forcing them to charge higher rates or reduce other services.
FinancialRef: Sec. 5(2); Sec. 5(3)
Who Is Most Affected
Low- and moderate-income households benefit most from higher incentives and improved grid resilience, but may be excluded by upfront cost barriers, income verification, and lease prohibitions — net impact is positive if access barriers are addressed.
Large investor-owned utilities gain the most from tax credits and grid reliability benefits, while smaller utilities may struggle with compliance costs and limited tax liability — net impact is positive for large utilities, negative or mixed for smaller ones.
Installers and equipment providers benefit from increased demand for battery systems, but may face new certification and compliance requirements — net impact is positive, especially for firms aligned with utility programs.
All residential customers benefit from improved grid reliability and reduced outage risk, but only participants receive direct financial incentives — net impact is slightly positive due to broader system stability.