def METHOD_NAME(pudl_out_ferc1, live_dbs):
    """Validate fuel by plants vs.
    historical data.
    """
    if not live_dbs:
        pytest.skip("Data validation only works with a live PUDL DB.")
    else:
        fbp_ferc1 = pudl_out_ferc1.fbp_ferc1()
        for f in ["gas", "oil", "coal", "waste", "nuclear"]:
            fbp_ferc1[f"{f}_cost_per_mmbtu"] = (
                fbp_ferc1[f"{f}_fraction_cost"] * fbp_ferc1["fuel_cost"]
            ) / (fbp_ferc1[f"{f}_fraction_mmbtu"] * fbp_ferc1["fuel_mmbtu"])
        for args in pv.fbp_ferc1_self:
            pv.vs_self(fbp_ferc1, **args)