Does the stretch code require 3% renewable electricity or solar panels?

This question has come up because there is an option under the prescriptive path of the stretch code to meet the requirements of one section of the code with on site renewable electricity generation. However, this is not a requirement, it is merely 1 of 3 options under this code approach, and there is also the alternative to meet the commercial stretch code requirements using the 20% better than ASHRAE 90.1-2007 modeling approach.


The 3 options which appear in section 507 of the prescriptive code option for buildings between 5,000 and 100,000 square feet are:

  • More efficient heating and cooling equipment – widely available and with utility rebates available to offset much of the incremental cost.
  • More efficient lighting – also widely available and eligible for significant utility rebates.
  • Providing at least 3% of the on site electric load from on site renewable generation – which qualifies for both large federal tax incentives and significant state renewable energy incentives from the Massachusetts Renewable Energy Trust (MRET).

Show All Answers

1. How is the stretch energy code different than the existing energy code?
2. What is the anticipated cost of implementing a more stringent energy code?
3. What kinds of technical and financial help are available to property owners and contractors?
4. What building types does the stretch energy code apply to?
5. Does the stretch code apply to major renovation projects as well as new construction?
6. Does the stretch code apply to minor additions to existing buildings?
7. What happens to buildings not covered by the stretch energy code?
8. What standards are the stretch code appendix based on?
9. What is required for large new commercial buildings above 100,000 square feet?
10. What is required for new commercial buildings between 5,000 and 100,000 square feet?
11. What would be required of small new commercial buildings, below 5,000 square feet?
12. How are new commercial buildings with special energy needs handled?
13. How do the benefits and costs from the commercial stretch code standards compare to the baseline code?
14. What categories do multifamily residential buildings fall into?
15. What training and materials are available on these standards?
16. How would the stretch code be implemented and enforced?
17. How does the stretch code work with Leadership in Energy and Environmental Design (LEED) buildings?
18. Does the stretch code require 3% renewable electricity or solar panels?
19. Where can I find and read more about the stretch code appendix?