Having the building meet basic building code requirements is not an "upgrade" or "structural improvement". I am curious how the building ever got a final Certificate of Occupancy if it had such electrical issues. You might touch base with the Building Inspector's office of the city in which the building is located to see if in fact they ever did get a final CO. If the panels were never sufficient to satisfy your basic needs and were not up to code, then that would generally constitute a constructive eviction, and you could move out, and even seek the cost of relocation for your business.
In Washington, commercial rental agreements are purely creatures of contract. There is no applicable consumer protection statute or anything analogous to the residential landlord tenant act. The Court presumes that you contracted for exactly what you wanted, and had your own attorney to assist you with drafting the contract so you would get exactly what you bargained for.
So getting out of a commercial lease on grounds that you have been constructively evicted would be quite an amazing feat. But no one offering thoughts here has seen your contract; that makes it tough to know what the entire contract provides and whether there would be any other reason that would help you avoid liability for breaching the lease.
I know this is not what you wanted to hear, but there it is. Elizabeth Powell
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