Dozens of demonstrators with loud speakers and banners said Tokyo Electric Power Co (TEPCO), which wants to restart some of the reactors at the world's largest nuclear plant, amongst others, must act to not repeat the 2011 Fukushima Daiichi disaster.
There was pushing and shoving between security guards and demonstrators as they tried to approach shareholders going into the gathering.
Activists from conservation group Greenpeace wore full protective suits and industrial face masks to remind shareholders what families who lived near Fukushima -- where three reactors went into meltdown after an earthquake-sparked tsunami -- must wear to check on their homes.
"Why don't you get exposed to radiation yourself? Why don't you lose your homeland?" he asked as shareholders filed into Tokyo International Forum for the company's annual meeting.
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His town remains evacuated because of elevated levels of radiation, amid expectations that it will be decades before it is safe to return, if ever.
Idogawa, who bought TEPCO shares last year, said the firm has been slow to offer compensation to those who lost homes, jobs, farms and their communities, and that which has been offered has been inadequate.
The sentiment was echoed during the meeting by fellow shareholders whose communities host other nuclear plants.
A woman from Niigata prefecture, where TEPCO hopes to start a major power station, also expressed her desire for the utility to end nuclear energy.
"Are we going to make the same mistake that we had in Fukushima, also in Niigata?" she said.
"Fellow shareholders, please support this proposal of scrapping the Kashiwazaki-Kariwa nuclear plant... And revitalising the site with plans for renewable energy," she said.