Completely phase out carbon emissions in the electricity sector
Gas has been dominating markets anyway, and fracking is harmful despite gas causing less CO2. So killing coal power plants is just a superficial victory to claim he made a real difference, which will cause the public to think they have achieved more than they actually have and thus deem themselves 'done for a while,' with climate reform.
Work with all levels of government to expedite clean energy projects
What will he do to reduce overall energy consumption instead of doing the typical economist/business greenwash of emphasizing more clean energy in order to avoid the harder question of how to reduce overall energy use by reducing per-capita energy use/consumption.
Invest first in communities that have suffered most or have been left behind
In other words, exempt richer communities from reforms as long as their are poorer communities being left behind by them? Way to incentivize leaving poor communities behind so that richer communities can delay reforms longer.
Hold corporations responsible for the damages they have created
Ok, so tax/fine/sue corporations in order to get more money from them and thus stimulate them to work harder to make more money, which will cause them to generate more waste in the process of getting more sales.
Restore the effectiveness of the Environmental Protection Agency
Someone should look at how much revenue the EPA generates in fines and compare the effects on business activity. I would guess more waste is caused by a stricter EPA then one with less power, but of course that is only because business and consumers don't police themselves against waste that's not explicitly regulated as long as it is economically normal waste.
On climate change, Bloomberg has experience unmatched in the presidential field—in international diplomacy through the UN and the Financial Stability Board; in philanthropy through the Sierra Club and the state and local coalitions he helped to build; and in managing New York City through crisis and recovery. Many credit him with laying the groundwork for state approval in early 2019 of a plan to cut New York City traffic through congestion pricing—an effort that makes him the only presidential candidate with vital experience as a government executive negotiating with a recalcitrant legislature over climate issues.
Pushing more people out of driving in NYC is very different than getting people in places with more sprawl to adopt transit-based lifestyles.