We use the Nuclear Energy Agency and International Energy Agency (NEA/IED) data to modify the electricity production structure in the GTAP-E model to allow for electricity generation in Japan to be composed of nuclear and non-nuclear sources. We then use the model to conduct some policy simulations to analyse the effect of the implementation of the Kyoto Agreement on the Japanese economy, with and without the contribution from nuclear electricity. In the former case, we assume the output of electricity from nuclear technology to remain the same as in the reference case. In the latter case, we allow this share to respond to the rising electricity generating costs from non-nuclear means which results from the implementation of the Kyoto Agreement. We then compare the results from the two cases to look at the contribution from nuclear technology to the fulfillment of the Kyoto Agreement in the case of the Japanese economy.