It's really good writing - I have a couple of corrections. Promotes safe motherhood and reduces maternal mortality in developing regions by providing health workers with reliable lighting, mobile communication, and medical devices (Maybe end the sentence here and start again) Using solar electricity is a core objective of ——— and one I identify with since I come from a country where there are a large number of indigenous regions WHICH don’t have access to electricity or cannot afford world-class hospitals. This situation makeS them vulnerable and increaseS the maternal mortality rate. THE INDIGENOUS REGIONS TAKE WHICH NOT WHO AND THERE ARE MORE THAN ONE SO THE VERBs NEEDS TO BE PLURALIZED. Well done!

Almost perfect! (Are you looking for something to fill in that blank? I assume you're not). In this passage i would use "...indigenous regions THAT don't have access to electricity..." and "This situation makeS them vulnerable and increaseS the maternal..." The verbs are referencing the situation (singular) rather than the indigenous regions (plural). I hope that helps!

Its good