High price differences between electricity and fossil fuel

In our building, fossil fuel is 30 time less expensive than electricity. And as we use fossil fuel and electricity for heating (mainly fossil fuel but we need a little bit of electricity), in the baseline we need to consider only heating with gaz according to ASHRAE (table G3.1.1A), thus even if we have a 40% heating energy consumption reduction in our project case compare to baseline, heating is approximatle 90% more expensive in our project case than baseline case and then we are far from reaching energy saving prerequisite. Considering our project energy cost circumstances, is there a way to consider energy saving rather than cost saving or to be able to consider same proportion of electricity and fossil fuel use for the baseline than for project case ? Thanks in advance.