Solano County has no ordinance specific to cryptocurrency or blockchain mining. A commercial mining operation is treated as a data center or industrial use, allowed in the M-L or M-G manufacturing districts and bound by the same Chapter 28 zoning, CEQA review, and Section 21-10 noise limit.
Unincorporated Solano County does not single out cryptocurrency or bitcoin mining in its code. Because a mining operation is a room of servers and cooling equipment, it is regulated the same as any data center: sited in the Manufacturing-Limited (M-L) or Manufacturing-General (M-G) districts under Chapter 28, subject to the Section 28.95 performance-standards procedure and CEQA review where a use permit or discretionary approval is required. Its cooling and any on-site generators must meet the countywide 65 dBA nighttime property-line limit under Section 21-10. Small-scale hobby mining on personal equipment inside a home falls under ordinary residential and home-occupation rules, not industrial zoning.
No crypto-specific penalty exists. A commercial mining facility built outside an M-L, M-G, or I-WD district, without required review, or exceeding the Section 21-10 noise limit faces Solano County zoning and noise enforcement and denial of permits until it conforms.
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