HPE GreenLake for Block Storage is a storage-as-a-service solution that delivers a cloud operational experience for mission-critical applications. It enables customers to consume enterprise-grade block storage on demand, with a pay-per-use model that aligns costs with usage. This way, customers can avoid overprovisioning and paying for excess capacity that they may not need in the near future. Instead, they can scale up or down as their needs change, and pay only for what they use at a predetermined cost per GB. This provides better economics and flexibility for customers who want to optimize their storage spending and improve their liquidity123. References:
HPE GreenLake for Block Storage
HPE GreenLake for Storage - Storage Management Services
HPE adds block storage to GreenLake

To present the power consumption of a proposed datacenter solution to a customer, you can use the following tools:
Product Bulletin: This is a web-based tool that provides technical specifications, features, benefits, and compatibility information for HPE products. You can use it to compare different products and configurations, and to generate customized reports that include power and cooling data for the selected products. You can also access the Product Bulletin from the HPE Sizer tool.
Power Advisor: This is a web-based tool that helps you estimate the power consumption and cooling requirements of HPE servers, storage, and networking devices. You can use it to create a configuration based on the customer's requirements, and to generate a power summary report that shows the power input, output, heat dissipation, and airflow data for the configuration. You can also export the configuration to the HPE Sizer tool.
The other options are not suitable for presenting the power consumption of a proposed solution.
OCA is an online tool that helps you assess the customer's current environment and identify opportunities for optimization and transformation. NinjaSTARS is a web-based tool that helps you compare the performance and cost of HPE storage solutions with competitors' products. SSET is a web-based tool that helps you design and validate HPE solutions based on customer requirements and industry workloads.

When generating a customer HPE GreenLake proposal, you need to submit the following mandatory items to HPE for quoting:
Start Bill of Materials: This is a document that lists the initial hardware and software components, quantities, and prices that are required for the HPE GreenLake solution. It also includes the service level, the billing unit, the minimum and maximum capacity, and the buffer size. The Start Bill of Materials helps HPE to calculate the monthly fee and the buffer charge for the customer.
Completed Order Checklist: This is a document that contains the essential information and documents that are needed to process the HPE GreenLake order. It includes the customer name, address, contact details, legal entity, billing frequency, payment method, contract term, start date, end date, and signature. It also includes the attachments such as the Start Bill of Materials, the End Bill of Materials, the Statement of Work, the Credit Check Form, and the Customer Acceptance Form.