A high-performing, reliable accelerator underpins all scientific studies using synchrotron radiation. The SSRL Accelerator Division is devoted to operating the SSRL accelerators with high availability and stability and developing new experimental capabilities through accelerator upgrades. We are also engaged in R&D related to future major upgrades for SSRL and accelerator physics in general. Enhancing the timing modes by providing an isolated, pseudo single electron bunch and mitigation of heating issues in accelerator components is currently a major effort. We have recently developed multi-bend achromat (MBA) lattices for three major upgrade scenarios based on an award-winning new design strategy. We are investigating ways to significantly improve the lattice performances through design innovations and technological advances. We are also studying advanced operational modes for a future upgrade that could result in substantial performance improvement. R&D in beam-based methods for accelerator operation and commissioning is another major area of our interest. Methods we developed for beam-based alignment, linear optics and coupling correction, and online optimization have found use in accelerator laboratories across the globe. We are currently developing more powerful methods with the help of machine learning.