Skip to main content

View Diary: I've Begun the Solar Investigation (126 comments)

Comment Preferences

  •  So glad to see solar geeks out there. I missed how (0+ / 0-)

    many kw you hope to generate. It looks fairly close to the 3.4kw system we had installed the last week of February by cost.

    Solar World panels x 14; Fronius Inverter; grid intertie system with net metering. We do not sell power back as we couldn't see the annual net being more than we use. So we spin the old analog meter backward when we are not using the amount produced.

    We have generated over 2 MW since installation. I need to talk to the electric coop to see how often we actually developed credit energy. This does not show up on the bill. But we can see the reduction in use first by replace the old ducted heap pump with Mitsubishi Mini Splits, and insulation: dropped 30%; then with solar dropped another 20%.

    Cost is not the issue as we have subsidized power at .06/kwh here. Outrageous. If 21,000 kwhrs/year wasn't enough to justify a savings, then nothing is. Our goal is 8000 khrs/year.

    We replaced our roof surface with very light asphalt shingle, and are using our separate garage as the structure, with too many trees shading the house.

    The garage had to be reinforced for the 50# per panel load, but it is going well.

    Fronius has a fair sw package to output daily and historic graphs on production. I have seen better systems cheaper that allow monitoring on both the generation and the use sides.

    Thanks for this lovely diary.

    Science is hell bent on consensus. Dr. Michael Crichton said “Let’s be clear: The work of science has nothing to do with consensus... which is the business of politics. Science, on the contrary, requires only one investigator who happens to be right,”

    by Regina in a Sears Kit House on Wed Aug 08, 2012 at 03:56:36 PM PDT

    •  Oh I meant to add that no matter how they (0+ / 0-)

      look people are really into independent, sustainable energy for their homes. If we sell, we expect to see the investment repaid.

      Very popular to have solar and a well insulated house.

      We would do really well with solar hot water, but the up front capital is stopping that installation for now.

      More incentives please.

      Science is hell bent on consensus. Dr. Michael Crichton said “Let’s be clear: The work of science has nothing to do with consensus... which is the business of politics. Science, on the contrary, requires only one investigator who happens to be right,”

      by Regina in a Sears Kit House on Wed Aug 08, 2012 at 04:18:15 PM PDT

      [ Parent ]

    •  That's the burning question (0+ / 0-)

      We have a huge roof... I think it could sustain as much as 8 kW in high efficiency panels.  That's one thing I need to run the numbers on ... whether it's worth it to go with higher rated panels on a cost basis. Also most systems max out at 6 kW so exceeding that would double a lot of costs - charge controller, inverter, etc.  But I also know that panel efficiency is going to go up and up, so we might as well build the system with expansion in mind.

      One thing that had me scratching my head this morning is the actual cost benefit.  Around here, one kW/hr sells for .08¢.  In one year, a 1 kW system will produce just over 1 MW of power = $80.  a 5 kW system will produce about 6 MW = $480 per year.  Is this right?  How could it ever justify a $30,000 system?  Did I miss something?

      Yeah, that's the ticket, I retired retroactively.

      by bondibox on Fri Aug 10, 2012 at 12:35:26 PM PDT

      [ Parent ]

Subscribe or Donate to support Daily Kos.

  • Recommended (151)
  • Community (76)
  • Bernie Sanders (50)
  • Elections (42)
  • 2016 (41)
  • Environment (34)
  • Hillary Clinton (33)
  • Climate Change (33)
  • Culture (32)
  • Civil Rights (29)
  • Republicans (28)
  • Science (28)
  • Media (27)
  • Barack Obama (24)
  • Law (23)
  • Labor (23)
  • Spam (21)
  • Education (19)
  • Trans-Pacific Partnership (19)
  • International (18)
  • Click here for the mobile view of the site