Provides corporation business tax and gross income tax credits for certain solar energy system expenditures.

S 659 provides a 35% tax credit for New Jersey taxpayers who install solar energy systems on their property, directly affecting residential homeowners, apartment building owners, and businesses. The credit covers 35% of qualified solar equipment costs (purchase, installation, or long-term leases), with annual limits of $5,000 for single-family homes, $350 per apartment unit, and $500,000 for commercial or industrial properties. Taxpayers must apply for certification from the Environmental Protection Commissioner, and unused credits can be carried forward for up to seven years. The total annual tax credit funding is capped at $25 million across all eligible properties.